SELF
- the "self" type of this assertion class. Please read "Emulating 'self types' using Java Generics to simplify fluent API implementation"
for more details.ACTUAL
- the type of the "actual" value.ELEMENT
- the type of elements of the "actual" value.ELEMENT_ASSERT
- used for navigational assertions to return the right assert type.public abstract class AbstractIterableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>,ELEMENT,ELEMENT_ASSERT extends AbstractAssert<ELEMENT_ASSERT,ELEMENT>> extends AbstractAssert<SELF,ACTUAL> implements ObjectEnumerableAssert<SELF,ELEMENT>
ObjectEnumerableAssert
whose actual value type is
Collection
.Modifier and Type | Field and Description |
---|---|
protected Iterables |
iterables |
actual, info, myself, throwUnsupportedExceptionOnEquals
Constructor and Description |
---|
AbstractIterableAssert(ACTUAL actual,
Class<?> selfType) |
Modifier and Type | Method and Description |
---|---|
SELF |
allMatch(Predicate<? super ELEMENT> predicate)
Verifies that all the elements of actual match the given
Predicate . |
SELF |
allMatch(Predicate<? super ELEMENT> predicate,
String predicateDescription)
Verifies that all the elements of actual match the given
Predicate . |
SELF |
allSatisfy(Consumer<? super ELEMENT> requirements)
Verifies that all the elements satisfy given requirements expressed as a
Consumer . |
SELF |
anyMatch(Predicate<? super ELEMENT> predicate)
Verifies whether any elements match the provided
Predicate . |
SELF |
anySatisfy(Consumer<? super ELEMENT> requirements)
Verifies that at least one element satisfies the given requirements expressed as a
Consumer . |
SELF |
are(Condition<? super ELEMENT> condition)
Verifies that each element value satisfies the given condition.
|
SELF |
areAtLeast(int times,
Condition<? super ELEMENT> condition)
Verifies that there are at least n elements in the actual group satisfying the given condition.
|
SELF |
areAtLeastOne(Condition<? super ELEMENT> condition)
Verifies that there is at least one element in the actual group satisfying the given condition.
|
SELF |
areAtMost(int times,
Condition<? super ELEMENT> condition)
Verifies that there are at most n elements in the actual group satisfying the given condition.
|
SELF |
areExactly(int times,
Condition<? super ELEMENT> condition)
Verifies that there are exactly n elements in the actual group satisfying the given condition.
|
SELF |
areNot(Condition<? super ELEMENT> condition)
Verifies that each element value does not satisfy the given condition.
|
SELF |
as(Description description)
Sets the description of the assertion that is going to be called after.
|
SELF |
as(String description,
Object... args)
Sets the description of the assertion that is going to be called after.
|
SELF |
contains(ELEMENT... values)
Verifies that the actual group contains the given values, in any order.
|
SELF |
containsAll(Iterable<? extends ELEMENT> iterable)
Verifies that the actual group contains all the elements of given
Iterable , in any order. |
SELF |
containsAnyElementsOf(Iterable<ELEMENT> iterable)
|
SELF |
containsAnyOf(ELEMENT... values)
Verifies that the actual
Iterable contains at least one of the given values. |
SELF |
containsExactly(ELEMENT... values)
Verifies that the actual group contains exactly the given values and nothing else, in order.
This assertion should only be used with groups that have a consistent iteration order (i.e. |
SELF |
containsExactlyElementsOf(Iterable<? extends ELEMENT> iterable)
Same as
ObjectEnumerableAssert.containsExactly(Object...) but handle the Iterable to array conversion : verifies that
actual contains exactly the elements of the given iterable and nothing else in the same order. |
SELF |
containsExactlyInAnyOrder(ELEMENT... values)
Verifies that the actual group contains exactly the given values and nothing else, in any order.
|
SELF |
containsExactlyInAnyOrderElementsOf(Iterable<? extends ELEMENT> values)
Verifies that the actual group contains exactly the given values and nothing else, in any order.
|
SELF |
containsNull()
Verifies that the actual group contains at least a null element.
|
SELF |
containsOnly(ELEMENT... values)
Verifies that the actual group contains only the given values and nothing else, in any order and ignoring duplicates (i.e.
|
SELF |
containsOnlyElementsOf(Iterable<? extends ELEMENT> iterable)
Same semantic as
ObjectEnumerableAssert.containsOnly(Object[]) : verifies that actual contains all the elements of the given
iterable and nothing else, in any order and ignoring duplicates (i.e. |
SELF |
containsOnlyNulls()
Verifies that the actual group contains only null elements and nothing else.
|
SELF |
containsOnlyOnce(ELEMENT... values)
Verifies that the actual group contains the given values only once.
|
SELF |
containsSequence(ELEMENT... sequence)
Verifies that the actual group contains the given sequence in the correct order and without extra values between the sequence values.
|
SELF |
containsSequence(Iterable<? extends ELEMENT> sequence)
Verifies that the actual group contains the given sequence in the correct order and without extra values between the sequence values.
|
SELF |
containsSubsequence(ELEMENT... subsequence)
Verifies that the actual group contains the given subsequence in the correct order (possibly with other values between them).
|
SELF |
containsSubsequence(Iterable<? extends ELEMENT> subsequence)
Verifies that the actual group contains the given subsequence in the correct order (possibly with other values between them).
|
SELF |
describedAs(Description description)
Sets the description of the assertion that is going to be called after.
|
SELF |
describedAs(String description,
Object... args)
Sets the description of the assertion that is going to be called after.
|
SELF |
doesNotContain(ELEMENT... values)
Verifies that the actual group does not contain the given values.
|
SELF |
doesNotContainAnyElementsOf(Iterable<? extends ELEMENT> iterable)
Verifies that actual does not contain any elements of the given
Iterable (i.e. |
SELF |
doesNotContainNull()
Verifies that the actual group does not contain null elements.
|
SELF |
doesNotContainSequence(ELEMENT... sequence)
Verifies that the actual group does not contain the given sequence,
a sequence is defined by an ordered group of values without extra values between them.
|
SELF |
doesNotContainSequence(Iterable<? extends ELEMENT> sequence)
Verifies that the actual group does not contain the given sequence,
a sequence is defined by an ordered group of values without extra values between them.
|
SELF |
doesNotContainSubsequence(ELEMENT... subsequence)
Verifies that the actual group does not contain the given subsequence,
a subsequence is defined by an ordered group of values with possibly extra values between them.
|
SELF |
doesNotContainSubsequence(Iterable<? extends ELEMENT> subsequence)
Verifies that the actual group does not contain the given subsequence,
a subsequence is defined by an ordered group of values with possibly extra values between them.
|
SELF |
doesNotHave(Condition<? super ACTUAL> condition)
Verifies that the actual value does not satisfy the given condition.
|
SELF |
doesNotHaveAnyElementsOfTypes(Class<?>... unexpectedTypes)
Verifies that all elements in the actual
Iterable do not have the specified types (including subclasses). |
SELF |
doesNotHaveDuplicates()
Verifies that the actual group does not contain duplicates.
|
SELF |
doesNotHaveSameClassAs(Object other)
Verifies that the actual value does not have the same class as the given object.
|
SELF |
doNotHave(Condition<? super ELEMENT> condition)
Verifies that all elements do not satisfy the given condition.
|
ELEMENT_ASSERT |
element(int index)
Navigate and allow to perform assertions on the chosen element of the
Iterable under test. |
SELF |
endsWith(ELEMENT[] sequence)
Verifies that the actual group ends with the given sequence of objects, without any other objects between them.
|
SELF |
endsWith(ELEMENT first,
ELEMENT... rest)
Verifies that the actual group ends with the given sequence of objects, without any other objects between them.
|
<V> AbstractListAssert<?,List<? extends V>,V,ObjectAssert<V>> |
extracting(Extractor<? super ELEMENT,V> extractor)
Extract the values from Iterable's elements under test by applying an extracting function on them.
|
AbstractListAssert<?,List<? extends Tuple>,Tuple,ObjectAssert<Tuple>> |
extracting(Function<ELEMENT,?>... extractors)
|
AbstractListAssert<?,List<? extends Tuple>,Tuple,ObjectAssert<Tuple>> |
extracting(String... propertiesOrFields)
Extract the values of the given fields/properties from the Iterable's elements under test into a new Iterable composed
of Tuples (a simple data structure), this new Iterable becoming the Iterable under test.
|
AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> |
extracting(String propertyOrField)
Extract the values of the given field or property from the Iterable's elements under test into a new Iterable, this new
Iterable becoming the Iterable under test.
|
<P> AbstractListAssert<?,List<? extends P>,P,ObjectAssert<P>> |
extracting(String propertyOrField,
Class<P> extractingType)
Extract the values of given field or property from the Iterable's elements under test into a new Iterable, this new
Iterable becoming the Iterable under test.
|
<V,EXCEPTION extends Exception> |
extracting(ThrowingExtractor<? super ELEMENT,V,EXCEPTION> extractor)
Extract the values from Iterable's elements under test by applying an extracting function (which might throw an
exception) on them.
|
AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> |
extractingResultOf(String method)
Extract the result of given method invocation on the Iterable's elements under test into a new Iterable, this new
Iterable becoming the Iterable under test.
|
<P> AbstractListAssert<?,List<? extends P>,P,ObjectAssert<P>> |
extractingResultOf(String method,
Class<P> extractedType)
Extract the result of given method invocation on the Iterable's elements under test into a new list of the given
class, this new List becoming the object under test.
|
AbstractListAssert<?,List<? extends ELEMENT>,ELEMENT,ObjectAssert<ELEMENT>> |
filteredOn(Condition<? super ELEMENT> condition)
Filter the iterable under test keeping only elements matching the given
Condition . |
AbstractListAssert<?,List<? extends ELEMENT>,ELEMENT,ObjectAssert<ELEMENT>> |
filteredOn(Predicate<? super ELEMENT> predicate)
Filter the iterable under test keeping only elements matching the given
Predicate . |
AbstractListAssert<?,List<? extends ELEMENT>,ELEMENT,ObjectAssert<ELEMENT>> |
filteredOn(String propertyOrFieldName,
FilterOperator<?> filterOperator)
Filter the iterable under test keeping only elements having a property or field matching the filter expressed with
the
FilterOperator , the property/field is specified by propertyOrFieldName parameter. |
AbstractListAssert<?,List<? extends ELEMENT>,ELEMENT,ObjectAssert<ELEMENT>> |
filteredOn(String propertyOrFieldName,
Object expectedValue)
Filter the iterable under test keeping only elements having a property or field equal to
expectedValue , the
property/field is specified by propertyOrFieldName parameter. |
AbstractListAssert<?,List<? extends ELEMENT>,ELEMENT,ObjectAssert<ELEMENT>> |
filteredOnNull(String propertyOrFieldName)
Filter the iterable under test keeping only elements whose property or field specified by
propertyOrFieldName is null. |
ELEMENT_ASSERT |
first()
Navigate and allow to perform assertions on the first element of the
Iterable under test. |
AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> |
flatExtracting(Extractor<? super ELEMENT,?>... extractors)
Extract multiple values from each
Iterable 's element according to the given Extractor s
and concatenate/flatten the extracted values in a list that is used as the new object under test. |
<V> AbstractListAssert<?,List<? extends V>,V,ObjectAssert<V>> |
flatExtracting(Extractor<? super ELEMENT,? extends Collection<V>> extractor)
Extract the Iterable values from Iterable's elements under test by applying an Iterable extracting function on them
and concatenating the result lists.
|
AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> |
flatExtracting(String... fieldOrPropertyNames)
Extract the given property/field values from each
Iterable 's element and
flatten the extracted values in a list that is used as the new object under test. |
AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> |
flatExtracting(String fieldOrPropertyName)
Extract from Iterable's elements the Iterable/Array values corresponding to the given property/field name and
concatenate them into a single list becoming the new object under test.
|
<EXCEPTION extends Exception> |
flatExtracting(ThrowingExtractor<? super ELEMENT,?,EXCEPTION>... extractors)
Extract multiple values from each
Iterable 's element according to the given ThrowingExtractor s
and concatenate/flatten the extracted values in a list that is used as the new object under test. |
<V,EXCEPTION extends Exception> |
flatExtracting(ThrowingExtractor<? super ELEMENT,? extends Collection<V>,EXCEPTION> extractor)
Extract the Iterable values from Iterable's elements under test by applying an Iterable extracting function (which
might throw an exception) on them and concatenating the result lists.
|
SELF |
has(Condition<? super ACTUAL> condition)
Verifies that the actual value satisfies the given condition.
|
SELF |
hasAtLeastOneElementOfType(Class<?> expectedType)
Verifies that at least one element in the actual
Iterable has the specified type (matching includes
subclasses of the given type). |
SELF |
hasOnlyElementsOfType(Class<?> expectedType)
Verifies that all elements in the actual
Iterable have the specified type (matching includes
subclasses of the given type). |
SELF |
hasOnlyElementsOfTypes(Class<?>... types)
Verifies that all elements of the actual group are instances of the given types.
|
void |
hasOnlyOneElementSatisfying(Consumer<ELEMENT> elementAssertions)
Verifies that the unique element of the
Iterable satifies the given assertions expressed as a Consumer ,
if it does not, only the first error is reported, use SoftAssertions to get all the errors. |
SELF |
hasSameClassAs(Object other)
Verifies that the actual value has the same class as the given object.
|
SELF |
hasSameElementsAs(Iterable<? extends ELEMENT> iterable)
An alias of
ObjectEnumerableAssert.containsOnlyElementsOf(Iterable) : verifies that actual contains all the elements of the
given iterable and nothing else, in any order. |
SELF |
hasSameSizeAs(Iterable<?> other)
Verifies that the actual group has the same size as given
Iterable . |
SELF |
hasSameSizeAs(Object other)
Verifies that the actual group has the same size as given array.
|
SELF |
hasSize(int expected)
Verifies that the number of values in the actual group is equal to the given one.
|
SELF |
hasToString(String expectedToString)
Verifies that actual
actual.toString() is equal to the given String . |
SELF |
have(Condition<? super ELEMENT> condition)
Verifies that all elements satisfy the given condition.
|
SELF |
haveAtLeast(int times,
Condition<? super ELEMENT> condition)
Verifies that there are at least n elements in the actual group satisfying the given condition.
|
SELF |
haveAtLeastOne(Condition<? super ELEMENT> condition)
Verifies that there is at least one element in the actual group satisfying the given condition.
|
SELF |
haveAtMost(int times,
Condition<? super ELEMENT> condition)
Verifies that there are at most n elements in the actual group satisfying the given condition.
|
SELF |
haveExactly(int times,
Condition<? super ELEMENT> condition)
Verifies that there are exactly n elements in the actual group satisfying the given condition.
|
SELF |
inBinary()
Enable binary representation of Iterable elements instead of standard representation in error messages.
|
SELF |
inHexadecimal()
Enable hexadecimal representation of Iterable elements instead of standard representation in error messages.
|
SELF |
is(Condition<? super ACTUAL> condition)
Verifies that the actual value satisfies the given condition.
|
void |
isEmpty()
Verifies that the actual group of values is empty.
|
SELF |
isEqualTo(Object expected)
Verifies that the actual value is equal to the given one.
|
SELF |
isExactlyInstanceOf(Class<?> type)
Verifies that the actual value is exactly an instance of the given type.
|
SELF |
isIn(Iterable<?> values)
Verifies that the actual value is present in the given values.
|
SELF |
isIn(Object... values)
Verifies that the actual value is present in the given array of values.
|
SELF |
isInstanceOf(Class<?> type)
Verifies that the actual value is an instance of the given type.
|
SELF |
isInstanceOfAny(Class<?>... types)
Verifies that the actual value is an instance of any of the given types.
|
SELF |
isNot(Condition<? super ACTUAL> condition)
Verifies that the actual value does not satisfy the given condition.
|
SELF |
isNotEmpty()
Verifies that the actual group of values is not empty.
|
SELF |
isNotEqualTo(Object other)
Verifies that the actual value is not equal to the given one.
|
SELF |
isNotExactlyInstanceOf(Class<?> type)
Verifies that the actual value is not exactly an instance of given type.
|
SELF |
isNotIn(Iterable<?> values)
Verifies that the actual value is not present in the given values.
|
SELF |
isNotIn(Object... values)
Verifies that the actual value is not present in the given array of values.
|
SELF |
isNotInstanceOf(Class<?> type)
Verifies that the actual value is not an instance of the given type.
|
SELF |
isNotInstanceOfAny(Class<?>... types)
Verifies that the actual value is not an instance of any of the given types.
|
SELF |
isNotNull()
Verifies that the actual value is not
null . |
SELF |
isNotOfAnyClassIn(Class<?>... types)
Verifies that the actual value type is not in given types.
|
SELF |
isNotSameAs(Object other)
Verifies that the actual value is not the same as the given one, ie using == comparison.
|
void |
isNullOrEmpty()
Verifies that the actual group of values is
null or empty. |
SELF |
isOfAnyClassIn(Class<?>... types)
Verifies that the actual value type is in given types.
|
SELF |
isSameAs(Object expected)
Verifies that the actual value is the same as the given one, ie using == comparison.
|
SELF |
isSubsetOf(ELEMENT... values)
Verifies that all the elements of actual are present in the given values.
|
SELF |
isSubsetOf(Iterable<? extends ELEMENT> values)
Verifies that all the elements of actual are present in the given
Iterable . |
ELEMENT_ASSERT |
last()
Navigate and allow to perform assertions on the first element of the
Iterable under test. |
protected String |
navigationDescription(String propertyName) |
SELF |
noneMatch(Predicate<? super ELEMENT> predicate)
Verifies that no elements match the given
Predicate . |
SELF |
overridingErrorMessage(String newErrorMessage,
Object... args)
Overrides AssertJ default error message by the given one.
|
AbstractIterableSizeAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT> |
size()
Returns an
Assert object that allows performing assertions on the size of the Iterable under test. |
SELF |
startsWith(ELEMENT... sequence)
Verifies that the actual group starts with the given sequence of objects, without any other objects between them.
|
protected abstract ELEMENT_ASSERT |
toAssert(ELEMENT value,
String description) |
protected static <T> Iterable<T> |
toLazyIterable(Iterator<T> actual) |
SELF |
usingComparator(Comparator<? super ACTUAL> customComparator)
Use given custom comparator instead of relying on actual type A equals method for incoming assertion checks.
|
<T> SELF |
usingComparatorForElementFieldsWithNames(Comparator<T> comparator,
String... elementPropertyOrFieldNames)
Allows to set a comparator to compare properties or fields of elements with the given names.
|
<T> SELF |
usingComparatorForElementFieldsWithType(Comparator<T> comparator,
Class<T> type)
Allows to set a specific comparator to compare properties or fields of elements with the given type.
|
<T> SELF |
usingComparatorForType(Comparator<T> comparator,
Class<T> type)
Allows to set a specific comparator for the given type of elements or their fields.
|
protected SELF |
usingComparisonStrategy(ComparisonStrategy comparisonStrategy) |
SELF |
usingDefaultComparator()
Revert to standard comparison for incoming assertion checks.
|
SELF |
usingDefaultElementComparator()
Revert to standard comparison for incoming assertion group element checks.
|
SELF |
usingElementComparator(Comparator<? super ELEMENT> elementComparator)
Use given custom comparator instead of relying on actual type A
equals method to compare group
elements for incoming assertion checks. |
SELF |
usingElementComparatorIgnoringFields(String... fields)
Use field/property by field/property comparison on all fields/properties except the given ones (including inherited
fields/properties) instead of relying on actual type A
equals method to compare group elements for
incoming assertion checks. |
SELF |
usingElementComparatorOnFields(String... fields)
Use field/property by field/property comparison on the given fields/properties only (including inherited
fields/properties) instead of relying on actual type A
equals method to compare group elements for
incoming assertion checks. |
SELF |
usingFieldByFieldElementComparator()
Use field/property by field/property comparison (including inherited fields/properties) instead of relying on
actual type A
equals method to compare group elements for incoming assertion checks. |
SELF |
usingRecursiveFieldByFieldElementComparator()
Use a recursive field/property by field/property comparison (including inherited fields/properties)
instead of relying on actual type
equals method to compare group elements for incoming
assertion checks. |
SELF |
withFailMessage(String newErrorMessage,
Object... args)
Alternative method for
AbstractAssert.overridingErrorMessage(java.lang.String, java.lang.Object...) |
SELF |
withThreadDumpOnError()
In case of an assertion error, a thread dump will be printed to
System.err . |
<OTHER_ELEMENT> |
zipSatisfy(Iterable<OTHER_ELEMENT> other,
BiConsumer<? super ELEMENT,OTHER_ELEMENT> zipRequirements)
Verifies that the zipped pairs of actual and other elements, i.e: (actual 1st element, other 1st element), (actual 2nd element, other 2nd element), ...
|
asList, asString, descriptionText, equals, failWithMessage, getWritableAssertionInfo, hashCode, hasSameHashCodeAs, isInstanceOfSatisfying, isNull, matches, matches, newListAssertInstance, satisfies, setCustomRepresentation, throwAssertionError, withRepresentation
protected Iterables iterables
public void isNullOrEmpty()
null
or empty.
Example:
// assertions will pass
List<String> strings = new ArrayList<>();
assertThat(strings).isNullOrEmpty();
assertThat(new int[] { }).isNullOrEmpty();
// assertions will fail
assertThat(new String[] { "a", "b"}).isNullOrEmpty();
assertThat(Arrays.asList(1, 2, 3)).isNullOrEmpty();
isNullOrEmpty
in interface EnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
public void isEmpty()
Example:
// assertions will pass
assertThat(new ArrayList()).isEmpty();
assertThat(new int[] { }).isEmpty();
// assertions will fail
assertThat(new String[] { "a", "b" }).isEmpty();
assertThat(Arrays.asList(1, 2, 3)).isEmpty();
isEmpty
in interface EnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
public SELF isNotEmpty()
Example:
// assertions will pass
assertThat(new String[] { "a", "b" }).isNotEmpty();
assertThat(Arrays.asList(1, 2, 3)).isNotEmpty();
// assertions will fail
assertThat(new ArrayList()).isNotEmpty();
assertThat(new int[] { }).isNotEmpty();
isNotEmpty
in interface EnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
this
assertion object.public SELF hasSize(int expected)
Example:
// assertions will pass
assertThat(new String[] { "a", "b" }).hasSize(2);
assertThat(Arrays.asList(1, 2, 3)).hasSize(3);
// assertions will fail
assertThat(new ArrayList()).hasSize(1);
assertThat(new int[] { 1, 2, 3 }).hasSize(2);
hasSize
in interface EnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
expected
- the expected number of values in the actual group.this
assertion object.public void hasOnlyOneElementSatisfying(Consumer<ELEMENT> elementAssertions)
Iterable
satifies the given assertions expressed as a Consumer
,
if it does not, only the first error is reported, use SoftAssertions
to get all the errors.
Example:
List<Jedi> jedis = asList(new Jedi("Yoda", "red"));
// assertions will pass
assertThat(jedis).hasOnlyOneElementSatisfying(yoda -> assertThat(yoda.getName()).startsWith("Y"));
assertThat(jedis).hasOnlyOneElementSatisfying(yoda -> {
assertThat(yoda.getName()).isEqualTo("Yoda");
assertThat(yoda.getLightSaberColor()).isEqualTo("red");
});
// assertions will fail
assertThat(jedis).hasOnlyOneElementSatisfying(yoda -> assertThat(yoda.getName()).startsWith("Vad"));
// fail as one the assertions is not satisfied
assertThat(jedis).hasOnlyOneElementSatisfying(yoda -> {
assertThat(yoda.getName()).isEqualTo("Yoda");
assertThat(yoda.getLightSaberColor()).isEqualTo("purple");
});
// fail but only report the first error
assertThat(jedis).hasOnlyOneElementSatisfying(yoda -> {
assertThat(yoda.getName()).isEqualTo("Luke");
assertThat(yoda.getLightSaberColor()).isEqualTo("green");
});
// fail and reports the errors thanks to Soft assertions
assertThat(jedis).hasOnlyOneElementSatisfying(yoda -> {
SoftAssertions softly = new SoftAssertions();
softly.assertThat(yoda.getName()).isEqualTo("Luke");
softly.assertThat(yoda.getLightSaberColor()).isEqualTo("green");
softly.assertAll();
});
// even if the assertion is correct, there are too many jedis !
jedis.add(new Jedi("Luke", "green"));
assertThat(jedis).hasOnlyOneElementSatisfying(yoda -> assertThat(yoda.getName()).startsWith("Yo"));
elementAssertions
- the assertions to perform on the unique element.AssertionError
- if the Iterable
does not have a unique element.AssertionError
- if the Iterable
's unique element does not satifies the given assertions.public SELF hasSameSizeAs(Object other)
Parameter is declared as Object to accept both Object[] and primitive arrays (e.g. int[]).
Example: int[] oneTwoThree = {1, 2, 3};
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertion will pass
assertThat(elvesRings).hasSameSizeAs(oneTwoThree);
// assertions will fail
assertThat(elvesRings).hasSameSizeAs(new int[] { 1, 2});
assertThat(elvesRings).hasSameSizeAs(new int[] { 1, 2, 3, 4});
hasSameSizeAs
in interface EnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
other
- the array to compare size with actual group.this
assertion object.public SELF hasSameSizeAs(Iterable<?> other)
Iterable
.
Example:
Iterable<String> abc = newArrayList("a", "b", "c");
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertion will pass
assertThat(elvesRings).hasSameSizeAs(abc);
// assertions will fail
assertThat(elvesRings).hasSameSizeAs(Arrays.asList(1, 2));
assertThat(elvesRings).hasSameSizeAs(Arrays.asList(1, 2, 3, 4));
hasSameSizeAs
in interface EnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
other
- the Iterable
to compare size with actual group.this
assertion object.public SELF contains(ELEMENT... values)
Example:
Iterable<String> abc = newArrayList("a", "b", "c");
// assertions will pass
assertThat(abc).contains("b", "a");
assertThat(abc).contains("b", "a", "b");
// assertion will fail
assertThat(abc).contains("d");
If you want to specify the elements to check with an Iterable
, use containsAll(Iterable)
instead.
contains
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
values
- the given values.this
assertion object.public SELF containsOnly(ELEMENT... values)
If you need to check exactly the elements and their duplicates use:
containsExactly(Object...)
if the order does mattercontainsExactlyInAnyOrder(Object...)
if the order does not matterExample:
Iterable<String> abc = newArrayList("a", "b", "c");
// assertions will pass as order does not matter
assertThat(abc).containsOnly("c", "b", "a");
// duplicates are ignored
assertThat(abc).containsOnly("a", "a", "b", "c", "c");
// ... on both actual and expected values
assertThat(asList("a", "a", "b")).containsOnly("a", "b")
.containsOnly("a", "a", "b", "b");
// assertion will fail because "c" is missing in the given values
assertThat(abc).containsOnly("a", "b");
// assertion will fail because "d" is missing in abc (use isSubsetOf if you want this assertion to pass)
assertThat(abc).containsOnly("a", "b", "c", "d");
If you need to check that actual is a subset of the given values, use ObjectEnumerableAssert.isSubsetOf(Object...)
.
If you want to specify the elements to check with an Iterable
, use containsOnlyElementsOf(Iterable)
instead.
containsOnly
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
values
- the given values.this
assertion object.public SELF containsOnlyOnce(ELEMENT... values)
Examples :
// lists are used in the examples but it would also work with arrays
// assertions will pass
assertThat(newArrayList("winter", "is", "coming")).containsOnlyOnce("winter");
assertThat(newArrayList("winter", "is", "coming")).containsOnlyOnce("coming", "winter");
// assertions will fail
assertThat(newArrayList("winter", "is", "coming")).containsOnlyOnce("Lannister");
assertThat(newArrayList("Arya", "Stark", "daughter", "of", "Ned", "Stark")).containsOnlyOnce("Stark");
assertThat(newArrayList("Arya", "Stark", "daughter", "of", "Ned", "Stark")).containsOnlyOnce("Stark", "Lannister", "Arya");
containsOnlyOnce
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
values
- the given values.this
assertion object.public SELF containsOnlyNulls()
Example:
// assertion will pass
Iterable<String> items = Arrays.asList(null, null, null);
assertThat(items).containsOnlyNulls();
// assertion will fail because items2 contains a not null element
Iterable<String> items2 = Arrays.asList(null, null, "notNull");
assertThat(items2).containsOnlyNulls();
// assertion will fail since an empty iterable does not contain any elements and therefore no null ones.
Iterable<String> empty = new ArrayList<>();
assertThat(empty).containsOnlyNulls();
containsOnlyNulls
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
this
assertion object.public SELF containsExactly(ELEMENT... values)
HashSet
, prefer ObjectEnumerableAssert.containsOnly(Object...)
in that case).
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertion will pass
assertThat(elvesRings).containsExactly(vilya, nenya, narya);
// assertion will fail as actual and expected order differ
assertThat(elvesRings).containsExactly(nenya, vilya, narya);
If you want to specify the elements to check with an Iterable
, use containsExactlyElementsOf(Iterable)
instead.
containsExactly
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
values
- the given values.this
assertion object.public SELF containsExactlyInAnyOrder(ELEMENT... values)
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya, vilya);
// assertion will pass
assertThat(elvesRings).containsExactlyInAnyOrder(vilya, vilya, nenya, narya);
// assertion will fail as vilya is contained twice in elvesRings.
assertThat(elvesRings).containsExactlyInAnyOrder(nenya, vilya, narya);
If you want to specify the elements to check with an Iterable
, use containsExactlyInAnyOrderElementsOf(Iterable)
instead.
containsExactlyInAnyOrder
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
values
- the given values.this
assertion object.public SELF containsExactlyInAnyOrderElementsOf(Iterable<? extends ELEMENT> values)
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya, vilya);
Iterable<Ring> elvesRingsSomeMissing = newArrayList(vilya, nenya, narya);
Iterable<Ring> elvesRingsDifferentOrder = newArrayList(nenya, narya, vilya, vilya);
// assertion will pass
assertThat(elvesRings).containsExactlyInAnyOrder(elvesRingsDifferentOrder);
// assertion will fail as vilya is contained twice in elvesRings.
assertThat(elvesRings).containsExactlyInAnyOrder(elvesRingsSomeMissing);
If you want to directly specify the elements to check, use containsExactlyInAnyOrder(Object...)
instead.
containsExactlyInAnyOrderElementsOf
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
values
- the given values.this
assertion object.public SELF isSubsetOf(Iterable<? extends ELEMENT> values)
Iterable
.
Example:
// an Iterable is used in the example but it would also work with an array
List<Ring> ringsOfPower = newArrayList(oneRing, vilya, nenya, narya, dwarfRing, manRing);
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertion will pass:
assertThat(elvesRings).isSubsetOf(ringsOfPower);
// assertion will fail:
assertThat(elvesRings).isSubsetOf(newArrayList(nenya, narya));
If you want to directly specify the set of elements, use isSubsetOf(Object...)
instead.
isSubsetOf
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
values
- the Iterable
that should contain all actual elements.public SELF isSubsetOf(ELEMENT... values)
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertions will pass:
assertThat(elvesRings).isSubsetOf(vilya, nenya, narya)
.isSubsetOf(vilya, nenya, narya, dwarfRing);
// assertions will fail:
assertThat(elvesRings).isSubsetOf(vilya, nenya);
assertThat(elvesRings).isSubsetOf(vilya, nenya, dwarfRing);
If you want to specify the set of elements an Iterable
, use isSubsetOf(Iterable)
instead.
isSubsetOf
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
values
- the values that should be used for checking the elements of actual.public SELF containsSequence(ELEMENT... sequence)
Use ObjectEnumerableAssert.containsSubsequence(Object...)
to allow values between the expected sequence values.
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertions will pass
assertThat(elvesRings).containsSequence(vilya, nenya)
.containsSequence(nenya, narya);
// assertions will fail, the elements order is correct but there is a value between them (nenya)
assertThat(elvesRings).containsSequence(vilya, narya);
assertThat(elvesRings).containsSequence(nenya, vilya);
If you want to specify the sequence to check with an Iterable
, use containsSequence(Iterable)
instead.
containsSequence
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
sequence
- the sequence of objects to look for.public SELF containsSequence(Iterable<? extends ELEMENT> sequence)
Use ObjectEnumerableAssert.containsSubsequence(Iterable)
to allow values between the expected sequence values.
Example:
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertions will pass
assertThat(elvesRings).containsSequence(newArrayList(vilya, nenya))
.containsSequence(newArrayList(nenya, narya));
// assertions will fail, the elements order is correct but there is a value between them (nenya)
assertThat(elvesRings).containsSequence(newArrayList(vilya, narya));
assertThat(elvesRings).containsSequence(newArrayList(nenya, vilya));
If you want to directly specify the elements of the sequence to check, use containsSequence(Object...)
instead.
containsSequence
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
sequence
- the sequence of objects to look for.public SELF doesNotContainSequence(ELEMENT... sequence)
Use ObjectEnumerableAssert.doesNotContainSubsequence(Object...)
to also ensure the sequence does not exist with values between the expected sequence values.
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertions will pass, the elements order is correct but there is a value between them (nenya)
assertThat(elvesRings).doesNotContainSequence(vilya, narya)
.doesNotContainSequence(nenya, vilya);
// assertions will fail
assertThat(elvesRings).doesNotContainSequence(vilya, nenya);
assertThat(elvesRings).doesNotContainSequence(nenya, narya);
If you want to specify the sequence not to find with an Iterable
, use doesNotContainSequence(Iterable)
instead.
doesNotContainSequence
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
sequence
- the sequence of objects to look for.public SELF doesNotContainSequence(Iterable<? extends ELEMENT> sequence)
Use ObjectEnumerableAssert.doesNotContainSubsequence(Iterable)
to also ensure the sequence does not exist with values between the sequence values.
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertions will pass, the elements order is correct but there is a value between them (nenya)
assertThat(elvesRings).doesNotContainSequence(newArrayList(vilya, narya))
.doesNotContainSequence(newArrayList(nenya, vilya));
// assertions will fail
assertThat(elvesRings).doesNotContainSequence(newArrayList(vilya, nenya));
assertThat(elvesRings).doesNotContainSequence(newArrayList(nenya, narya));
If you want to directly specify the elements of the sequence not to find, use doesNotContainSequence(Object...)
instead.
doesNotContainSequence
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
sequence
- the sequence of objects to look for.public SELF containsSubsequence(ELEMENT... subsequence)
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertions will pass
assertThat(elvesRings).containsSubsequence(vilya, nenya)
.containsSubsequence(vilya, narya);
// assertion will fail
assertThat(elvesRings).containsSubsequence(nenya, vilya);
If you want to specify the elements of the subsequence to check with an Iterable
, use containsSubsequence(Iterable)
instead.
containsSubsequence
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
subsequence
- the sequence of objects to look for.public SELF containsSubsequence(Iterable<? extends ELEMENT> subsequence)
Example:
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertions will pass
assertThat(elvesRings).containsSubsequence(newArrayList(vilya, nenya))
.containsSubsequence(newArrayList(vilya, narya));
// assertion will fail
assertThat(elvesRings).containsSubsequence(newArrayList(nenya, vilya));
If you want to directly specify the subsequence to check, use containsSubsequence(Object...)
instead.
containsSubsequence
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
subsequence
- the sequence of objects to look for.public SELF doesNotContainSubsequence(ELEMENT... subsequence)
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertions will pass
assertThat(elvesRings).doesNotContainSubsequence(nenya, vilya)
.doesNotContainSubsequence(narya, vilya);
// assertion will fail
assertThat(elvesRings).doesNotContainSubsequence(vilya, nenya);
assertThat(elvesRings).doesNotContainSubsequence(vilya, narya);
If you want to specify the subsequence not to find with an Iterable
, use doesNotContainSubsequence(Iterable)
instead.
doesNotContainSubsequence
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
subsequence
- the sequence of objects to look for.public SELF doesNotContainSubsequence(Iterable<? extends ELEMENT> subsequence)
Example:
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertions will pass
assertThat(elvesRings).doesNotContainSubsequence(newArrayList(nenya, vilya));
.doesNotContainSubsequence(newArrayList(narya, vilya));
// assertion will fail
assertThat(elvesRings).doesNotContainSubsequence(newArrayList(vilya, nenya));
assertThat(elvesRings).doesNotContainSubsequence(newArrayList(vilya, narya));
If you want to directly specify the elements of the subsequence not to find, use doesNotContainSubsequence(Object...)
instead.
doesNotContainSubsequence
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
subsequence
- the sequence of objects to look for.public SELF doesNotContain(ELEMENT... values)
ObjectEnumerableAssert
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<String> abc = newArrayList("a", "b", "c");
// assertions will pass
assertThat(abc).doesNotContain("d")
.doesNotContain("d", "e");
// assertions will fail
assertThat(abc).doesNotContain("a");
assertThat(abc).doesNotContain("a", "b");
assertThat(abc).doesNotContain("c", "d");
If you want to specify the elements not to find with an Iterable
, use doesNotContainAnyElementsOf(Iterable)
instead.
doesNotContain
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
values
- the given values.this
assertion object.public SELF doesNotContainAnyElementsOf(Iterable<? extends ELEMENT> iterable)
ObjectEnumerableAssert
Iterable
(i.e. none).
Example:
Iterable<String> abc = newArrayList("a", "b", "c");
// assertion succeeds:
assertThat(actual).doesNotContainAnyElementsOf(newArrayList("d", "e"));
// assertion fails:
assertThat(actual).doesNotContainAnyElementsOf(newArrayList("d", "e", "a"));
If you want to directly specify the elements not to find, use doesNotContain(Object...)
instead.
doesNotContainAnyElementsOf
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
iterable
- the Iterable
whose elements must not be in the actual group.this
assertion object.public SELF doesNotHaveDuplicates()
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<String> abc = newArrayList("a", "b", "c");
Iterable<String> lotsOfAs = newArrayList("a", "a", "a");
// assertion will pass
assertThat(abc).doesNotHaveDuplicates();
// assertion will fail
assertThat(lotsOfAs).doesNotHaveDuplicates();
doesNotHaveDuplicates
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
this
assertion object.public SELF startsWith(ELEMENT... sequence)
ObjectEnumerableAssert.containsSequence(Object...)
, but it also verifies that the first element in the
sequence is also first element of the actual group.
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<String> abc = newArrayList("a", "b", "c");
// assertions will pass
assertThat(abc).startsWith("a")
.startsWith("a", "b");
// assertion will fail
assertThat(abc).startsWith("c");
startsWith
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
sequence
- the sequence of objects to look for.public SELF endsWith(ELEMENT first, ELEMENT... rest)
ObjectEnumerableAssert.containsSequence(Object...)
, but it also verifies that the last element in the
sequence is also last element of the actual group.
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<String> abc = newArrayList("a", "b", "c");
// assertions will pass
assertThat(abc).endsWith("c")
.endsWith("b", "c");
// assertions will fail
assertThat(abc).endsWith("a");
assertThat(abc).endsWith("a", "b");
endsWith
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
first
- the first element of the sequence of objects to look for.rest
- the rest of the sequence of objects to look for.public SELF endsWith(ELEMENT[] sequence)
ObjectEnumerableAssert.containsSequence(Object...)
, but it also verifies that the last element in the
sequence is also last element of the actual group.
Example:
// an Iterable is used in the example but it would also work with an array
Iterable<String> abc = newArrayList("a", "b", "c");
// assertions will pass
assertThat(abc).endsWith(new String[0])
.endsWith(new String[] {"c"})
.endsWith(new String[] {"b", "c"});
// assertions will fail
assertThat(abc).endsWith(new String[] {"a"});
assertThat(abc).endsWith(new String[] {"a", "b"});
endsWith
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
sequence
- the sequence of objects to look for.public SELF containsNull()
Example:
Iterable<String> abc = newArrayList("a", "b", "c");
Iterable<String> abNull = newArrayList("a", "b", null);
// assertion will pass
assertThat(abNull).containsNull();
// assertion will fail
assertThat(abc).containsNull();
containsNull
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
this
assertion object.public SELF doesNotContainNull()
Example:
Iterable<String> abc = newArrayList("a", "b", "c");
Iterable<String> abNull = newArrayList("a", "b", null);
// assertion will pass
assertThat(abc).doesNotContainNull();
// assertion will fail
assertThat(abNull).doesNotContainNull();
doesNotContainNull
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
this
assertion object.public SELF are(Condition<? super ELEMENT> condition)
Example:
Iterable<String> abc = newArrayList("a", "b", "c");
Iterable<String> abcc = newArrayList("a", "b", "cc");
Condition<String> singleCharacterString
= new Condition<>(s -> s.length() == 1, "single character String");
// assertion will pass
assertThat(abc).are(singleCharacterString);
// assertion will fail
assertThat(abcc).are(singleCharacterString);
are
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
condition
- the given condition.this
object.public SELF areNot(Condition<? super ELEMENT> condition)
Example:
Iterable<String> abc = newArrayList("a", "b", "c");
Iterable<String> abcc = newArrayList("a", "b", "cc");
Condition<String> moreThanOneCharacter =
= new Condition<>(s -> s.length() > 1, "more than one character");
// assertion will pass
assertThat(abc).areNot(moreThanOneCharacter);
// assertion will fail
assertThat(abcc).areNot(moreThanOneCharacter);
areNot
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
condition
- the given condition.this
object.public SELF have(Condition<? super ELEMENT> condition)
Example:
Iterable<String> abc = newArrayList("a", "b", "c");
Iterable<String> abcc = newArrayList("a", "b", "cc");
Condition<String> onlyOneCharacter =
= new Condition<>(s -> s.length() == 1, "only one character");
// assertion will pass
assertThat(abc).have(onlyOneCharacter);
// assertion will fail
assertThat(abcc).have(onlyOneCharacter);
have
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
condition
- the given condition.this
object.public SELF doNotHave(Condition<? super ELEMENT> condition)
Example:
Iterable<String> abc = newArrayList("a", "b", "c");
Iterable<String> abcc = newArrayList("a", "b", "cc");
Condition<String> moreThanOneCharacter =
= new Condition<>(s -> s.length() > 1, "more than one character");
// assertion will pass
assertThat(abc).doNotHave(moreThanOneCharacter);
// assertion will fail
assertThat(abcc).doNotHave(moreThanOneCharacter);
doNotHave
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
condition
- the given condition.this
object.public SELF areAtLeastOne(Condition<? super ELEMENT> condition)
This method is an alias for areAtLeast(1, condition)
.
Example:
// jedi is a Condition<String>
assertThat(newLinkedHashSet("Luke", "Solo", "Leia")).areAtLeastOne(jedi);
areAtLeastOne
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
condition
- the given condition.this
assertion object.ObjectEnumerableAssert.haveAtLeast(int, Condition)
public SELF areAtLeast(int times, Condition<? super ELEMENT> condition)
Example:
Iterable<Integer> oneTwoThree = newArrayList(1, 2, 3);
Condition<Integer> oddNumber = new Condition<>(value % 2 == 1, "odd number");
// assertion will pass
oneTwoThree.areAtLeast(2, oddNumber);
// assertion will fail
oneTwoThree.areAtLeast(3, oddNumber);
areAtLeast
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
times
- the minimum number of times the condition should be verified.condition
- the given condition.this
object.public SELF areAtMost(int times, Condition<? super ELEMENT> condition)
Example:
Iterable<Integer> oneTwoThree = newArrayList(1, 2, 3);
Condition<Integer> oddNumber = new Condition<>(value % 2 == 1, "odd number");
// assertions will pass
oneTwoThree.areAtMost(2, oddNumber)
.areAtMost(3, oddNumber);
// assertion will fail
oneTwoThree.areAtMost(1, oddNumber);
areAtMost
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
times
- the number of times the condition should be at most verified.condition
- the given condition.this
object.public SELF areExactly(int times, Condition<? super ELEMENT> condition)
Example:
Iterable<Integer> oneTwoThree = newArrayList(1, 2, 3);
Condition<Integer> oddNumber = new Condition<>(value % 2 == 1, "odd number");
// assertion will pass
oneTwoThree.areExactly(2, oddNumber);
// assertions will fail
oneTwoThree.areExactly(1, oddNumber);
oneTwoThree.areExactly(3, oddNumber);
areExactly
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
times
- the exact number of times the condition should be verified.condition
- the given condition.this
object.public SELF haveAtLeastOne(Condition<? super ELEMENT> condition)
This method is an alias for haveAtLeast(1, condition)
.
Example:
Iterable<BasketBallPlayer> bullsPlayers = newArrayList(butler, rose);
// potentialMvp is a Condition<BasketBallPlayer>
assertThat(bullsPlayers).haveAtLeastOne(potentialMvp);
haveAtLeastOne
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
condition
- the given condition.this
assertion object.ObjectEnumerableAssert.haveAtLeast(int, Condition)
public SELF haveAtLeast(int times, Condition<? super ELEMENT> condition)
Example:
Iterable<Integer> oneTwoThree = newArrayList(1, 2, 3);
Condition<Integer> oddNumber = new Condition<>(value % 2 == 1, "odd number");
// assertion will pass
oneTwoThree.haveAtLeast(2, oddNumber);
// assertion will fail
oneTwoThree.haveAtLeast(3, oddNumber);
This method is an alias for ObjectEnumerableAssert.areAtLeast(int, Condition)
.haveAtLeast
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
times
- the minimum number of times the condition must hold.condition
- the given condition.this
assertion object.public SELF haveAtMost(int times, Condition<? super ELEMENT> condition)
Example:
Iterable<Integer> oneTwoThree = newArrayList(1, 2, 3);
Condition<Integer> oddNumber = new Condition<>(value % 2 == 1, "odd number");
// assertions will pass
oneTwoThree.haveAtMost(2, oddNumber);
oneTwoThree.haveAtMost(3, oddNumber);
// assertion will fail
oneTwoThree.haveAtMost(1, oddNumber);
This method is an alias ObjectEnumerableAssert.areAtMost(int, Condition)
.haveAtMost
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
times
- the maximum number of times the condition must hold.condition
- the given condition.this
assertion object.public SELF haveExactly(int times, Condition<? super ELEMENT> condition)
Example:
Iterable<Integer> oneTwoThree = newArrayList(1, 2, 3);
Condition<Integer> oddNumber = new Condition<>(value % 2 == 1, "odd number");
// assertion will pass
oneTwoThree.haveExactly(2, oddNumber);
// assertions will fail
oneTwoThree.haveExactly(1, oddNumber);
oneTwoThree.haveExactly(3, oddNumber);
This method is an alias ObjectEnumerableAssert.areExactly(int, Condition)
.haveExactly
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
times
- the exact number of times the condition must hold.condition
- the given condition.this
assertion object.public SELF hasAtLeastOneElementOfType(Class<?> expectedType)
Iterable
has the specified type (matching includes
subclasses of the given type).
Example:
List<Number> numbers = new ArrayList<Number>();
numbers.add(1);
numbers.add(2L);
// successful assertion:
assertThat(numbers).hasAtLeastOneElementOfType(Long.class);
// assertion failure:
assertThat(numbers).hasAtLeastOneElementOfType(Float.class);
hasAtLeastOneElementOfType
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
expectedType
- the expected type.NullPointerException
- if the given type is null
.AssertionError
- if the actual Object
group does not have any elements of the given type.public SELF hasOnlyElementsOfType(Class<?> expectedType)
Iterable
have the specified type (matching includes
subclasses of the given type).
Example:
List<Number> numbers = new ArrayList<Number>();
numbers.add(1);
numbers.add(2);
numbers.add(3);
// successful assertions:
assertThat(numbers).hasOnlyElementsOfType(Number.class);
assertThat(numbers).hasOnlyElementsOfType(Integer.class);
// assertion failure:
assertThat(numbers).hasOnlyElementsOfType(Long.class);
hasOnlyElementsOfType
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
expectedType
- the expected type.NullPointerException
- if the given type is null
.AssertionError
- if one element is not of the expected type.public SELF doesNotHaveAnyElementsOfTypes(Class<?>... unexpectedTypes)
Iterable
do not have the specified types (including subclasses).
Example:
List<Number> numbers = new ArrayList<>();
numbers.add(1);
numbers.add(2);
numbers.add(3.0);
// successful assertions:
assertThat(numbers).doesNotHaveAnyElementsOfTypes(Long.class, Float.class);
// assertion failure:
assertThat(numbers).doesNotHaveAnyElementsOfTypes(Long.class, Integer.class);
doesNotHaveAnyElementsOfTypes
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
unexpectedTypes
- the not expected types.NullPointerException
- if the given type is null
.AssertionError
- if one element's type matches the given types.public SELF hasOnlyElementsOfTypes(Class<?>... types)
Example:
Iterable<? extends Object> objects = Arrays.asList("foo", new StringBuilder());
// assertions will pass
assertThat(objects).hasOnlyElementsOfTypes(CharSequence.class)
.hasOnlyElementsOfTypes(String.class, StringBuilder.class);
// assertions will fail
assertThat(objects).hasOnlyElementsOfTypes(Number.class);
assertThat(objects).hasOnlyElementsOfTypes(String.class, Number.class);
assertThat(objects).hasOnlyElementsOfTypes(String.class);
hasOnlyElementsOfTypes
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
types
- the expected classes and interfacesthis
assertion object.public SELF containsAll(Iterable<? extends ELEMENT> iterable)
Iterable
, in any order.
Example:
Iterable<String> abc = Arrays.asList("a", "b", "c");
// assertions will pass
assertThat(abc).containsAll(Arrays.asList("b", "c"))
.containsAll(Arrays.asList("a", "b", "c"));
// assertions will fail
assertThat(abc).containsAll(Arrays.asList("d"));
assertThat(abc).containsAll(Arrays.asList("a", "b", "c", "d"));
If you want to directly specify the elements to check, use contains(Object...)
instead.
containsAll
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
iterable
- the given Iterable
we will get elements from.this
assertion object.public SELF usingElementComparator(Comparator<? super ELEMENT> elementComparator)
equals
method to compare group
elements for incoming assertion checks.
Custom comparator is bound to assertion instance, meaning that if a new assertion is created, it will use default comparison strategy.
Examples : // compares invoices by payee
assertThat(invoiceList).usingComparator(invoicePayeeComparator).isEqualTo(expectedInvoiceList);
// compares invoices by date, doesNotHaveDuplicates and contains both use the given invoice date comparator
assertThat(invoiceList).usingComparator(invoiceDateComparator).doesNotHaveDuplicates().contains(may2010Invoice);
// as assertThat(invoiceList) creates a new assertion, it falls back to standard comparison strategy
// based on Invoice's equal method to compare invoiceList elements to lowestInvoice.
assertThat(invoiceList).contains(lowestInvoice);
// standard comparison : the fellowshipOfTheRing includes Gandalf but not Sauron (believe me) ...
assertThat(fellowshipOfTheRing).contains(gandalf)
.doesNotContain(sauron);
// ... but if we compare only races, Sauron is in fellowshipOfTheRing because he's a Maia like Gandalf.
assertThat(fellowshipOfTheRing).usingElementComparator(raceComparator)
.contains(sauron);
usingElementComparator
in interface EnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
elementComparator
- the comparator to use for incoming assertion checks.this
assertion object.public SELF usingDefaultElementComparator()
This method should be used to disable a custom comparison strategy set by calling
EnumerableAssert.usingElementComparator(Comparator)
.
usingDefaultElementComparator
in interface EnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
this
assertion object.public SELF containsAnyOf(ELEMENT... values)
Iterable
contains at least one of the given values.
Example :
Iterable<String> abc = Arrays.asList("a", "b", "c");
// assertions will pass
assertThat(abc).containsAnyOf("b")
.containsAnyOf("b", "c")
.containsAnyOf("a", "b", "c")
.containsAnyOf("a", "b", "c", "d")
.containsAnyOf("e", "f", "g", "b");
// assertions will fail
assertThat(abc).containsAnyOf("d");
assertThat(abc).containsAnyOf("d", "e", "f", "g");
containsAnyOf
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
values
- the values whose at least one which is expected to be in the Iterable
under test.this
assertion object.NullPointerException
- if the array of values is null
.IllegalArgumentException
- if the array of values is empty and the Iterable
under test is not empty.AssertionError
- if the Iterable
under test is null
.AssertionError
- if the Iterable
under test does not contain any of the given values
.public SELF containsAnyElementsOf(Iterable<ELEMENT> iterable)
Iterable
under test contains at least one of the given Iterable
elements.
Example :
Iterable<String> abc = Arrays.asList("a", "b", "c");
// assertions will pass
assertThat(abc).containsAnyElementsOf(Arrays.asList("b"))
.containsAnyElementsOf(Arrays.asList("b", "c"))
.containsAnyElementsOf(Arrays.asList("a", "b", "c"))
.containsAnyElementsOf(Arrays.asList("a", "b", "c", "d"))
.containsAnyElementsOf(Arrays.asList("e", "f", "g", "b"));
// assertions will fail
assertThat(abc).containsAnyElementsOf(Arrays.asList("d"));
assertThat(abc).containsAnyElementsOf(Arrays.asList("d", "e", "f", "g"));
containsAnyElementsOf
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
iterable
- the iterable whose at least one element is expected to be in the Iterable
under test.this
assertion object.NullPointerException
- if the iterable of expected values is null
.IllegalArgumentException
- if the iterable of expected values is empty and the Iterable
under test is not empty.AssertionError
- if the Iterable
under test is null
.AssertionError
- if the Iterable
under test does not contain any of elements from the given Iterable
.public AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> extracting(String propertyOrField)
It allows you to test a property/field of the the Iterable's elements instead of testing the elements themselves, which can be be much less work !
Let's take a look at an example to make things clearer :
// build a list of TolkienCharacters: a TolkienCharacter has a name, and age and a Race (a specific class)
// they can be public field or properties, both can be extracted.
List<TolkienCharacter> fellowshipOfTheRing = new ArrayList<TolkienCharacter>();
fellowshipOfTheRing.add(new TolkienCharacter("Frodo", 33, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Sam", 38, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gandalf", 2020, MAIA));
fellowshipOfTheRing.add(new TolkienCharacter("Legolas", 1000, ELF));
fellowshipOfTheRing.add(new TolkienCharacter("Pippin", 28, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gimli", 139, DWARF));
fellowshipOfTheRing.add(new TolkienCharacter("Aragorn", 87, MAN);
fellowshipOfTheRing.add(new TolkienCharacter("Boromir", 37, MAN));
// let's verify the names of the TolkienCharacters in fellowshipOfTheRing :
assertThat(fellowshipOfTheRing).extracting("name")
.contains("Boromir", "Gandalf", "Frodo")
.doesNotContain("Sauron", "Elrond");
// you can extract nested properties/fields like the name of the race :
assertThat(fellowshipOfTheRing).extracting("race.name")
.contains("Hobbit", "Elf")
.doesNotContain("Orc");
A property with the given name is searched for first. If it doesn't exist a field with the given name is looked
for. If the field does not exist an IntrospectionError
is thrown. By default private fields are read but
you can change this with Assertions.setAllowComparingPrivateFields(boolean)
. Trying to read a private field
when it's not allowed leads to an IntrospectionError
.
Note that the order of extracted property/field values is consistent with the iteration order of the Iterable under
test, for example if it's a HashSet
, you won't be able to make any assumptions on the extracted values
order.
Extracting also support maps, that is, instead of extracting values from an Object, it extracts maps values corresponding to the given keys.
Example:
Employee yoda = new Employee(1L, new Name("Yoda"), 800);
Employee luke = new Employee(2L, new Name("Luke"), 22);
Employee han = new Employee(3L, new Name("Han"), 31);
// build two maps
Map<String, Employee> map1 = new HashMap<>();
map1.put("key1", yoda);
map1.put("key2", luke);
Map<String, Employee> map2 = new HashMap<>();
map2.put("key1", yoda);
map2.put("key2", han);
// instead of a list of objects, we have a list of maps
List<Map<String, Employee>> maps = asList(map1, map2);
// extracting a property in that case = get values from maps using the property as a key
assertThat(maps).extracting("key2").containsExactly(luke, han);
assertThat(maps).extracting("key1").containsExactly(yoda, yoda);
// type safe version
assertThat(maps).extracting(key2, Employee.class).containsExactly(luke, han);
// it works with several keys, extracted values being wrapped in a Tuple
assertThat(maps).extracting("key1", "key2").containsExactly(tuple(yoda, luke), tuple(yoda, han));
// unknown keys leads to null (map behavior)
assertThat(maps).extracting("bad key").containsExactly(null, null);
propertyOrField
- the property/field to extract from the elements of the Iterable under testIntrospectionError
- if no field or property exists with the given name in one of the initial
Iterable's element.public AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> extractingResultOf(String method)
It allows you to test the method results of the Iterable's elements instead of testing the elements themselves. This is especially useful for classes that do not conform to the Java Bean's getter specification (i.e. public String toString() or public String status() instead of public String getStatus()).
Let's take a look at an example to make things clearer :
// Build a array of WesterosHouse, a WesterosHouse has a method: public String sayTheWords()
List<WesterosHouse> greatHouses = new ArrayList<WesterosHouse>();
greatHouses.add(new WesterosHouse("Stark", "Winter is Coming"));
greatHouses.add(new WesterosHouse("Lannister", "Hear Me Roar!"));
greatHouses.add(new WesterosHouse("Greyjoy", "We Do Not Sow"));
greatHouses.add(new WesterosHouse("Baratheon", "Our is the Fury"));
greatHouses.add(new WesterosHouse("Martell", "Unbowed, Unbent, Unbroken"));
greatHouses.add(new WesterosHouse("Tyrell", "Growing Strong"));
// let's verify the words of the great houses of Westeros:
assertThat(greatHouses).extractingResultOf("sayTheWords")
.contains("Winter is Coming", "We Do Not Sow", "Hear Me Roar")
.doesNotContain("Lannisters always pay their debts");
Following requirements have to be met to extract method results:
Note that the order of extracted results is consistent with the iteration order of the Iterable under test, for
example if it's a HashSet
, you won't be able to make any assumptions on the extracted results order.
method
- the name of the method which result is to be extracted from the array under testIllegalArgumentException
- if no method exists with the given name, or method is not public, or method does
return void, or method accepts arguments.public <P> AbstractListAssert<?,List<? extends P>,P,ObjectAssert<P>> extractingResultOf(String method, Class<P> extractedType)
It allows you to test the method results of the Iterable's elements instead of testing the elements themselves, it is especially useful for classes that do not conform to the Java Bean's getter specification (i.e. public String toString() or public String status() instead of public String getStatus()).
Let's take an example to make things clearer :
// Build a array of WesterosHouse, a WesterosHouse has a method: public String sayTheWords()
List<WesterosHouse> greatHouses = new ArrayList<WesterosHouse>();
greatHouses.add(new WesterosHouse("Stark", "Winter is Coming"));
greatHouses.add(new WesterosHouse("Lannister", "Hear Me Roar!"));
greatHouses.add(new WesterosHouse("Greyjoy", "We Do Not Sow"));
greatHouses.add(new WesterosHouse("Baratheon", "Our is the Fury"));
greatHouses.add(new WesterosHouse("Martell", "Unbowed, Unbent, Unbroken"));
greatHouses.add(new WesterosHouse("Tyrell", "Growing Strong"));
// let's verify the words of the great houses of Westeros:
assertThat(greatHouses).extractingResultOf("sayTheWords", String.class)
.contains("Winter is Coming", "We Do Not Sow", "Hear Me Roar")
.doesNotContain("Lannisters always pay their debts");
Following requirements have to be met to extract method results:
Note that the order of extracted property/field values is consistent with the iteration order of the Iterable under
test, for example if it's a HashSet
, you won't be able to make any assumptions of the extracted values
order.
P
- the type of elements extracted.method
- the name of the method which result is to be extracted from the array under testextractedType
- type of element of the extracted ListIllegalArgumentException
- if no method exists with the given name, or method is not public, or method does
return void or method accepts arguments.public <P> AbstractListAssert<?,List<? extends P>,P,ObjectAssert<P>> extracting(String propertyOrField, Class<P> extractingType)
It allows you to test a property/field of the the Iterable's elements instead of testing the elements themselves, which can be much less work !
Let's take an example to make things clearer :
// Build a list of TolkienCharacter, a TolkienCharacter has a name, and age and a Race (a specific class)
// they can be public field or properties, both can be extracted.
List<TolkienCharacter> fellowshipOfTheRing = new ArrayList<TolkienCharacter>();
fellowshipOfTheRing.add(new TolkienCharacter("Frodo", 33, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Sam", 38, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gandalf", 2020, MAIA));
fellowshipOfTheRing.add(new TolkienCharacter("Legolas", 1000, ELF));
fellowshipOfTheRing.add(new TolkienCharacter("Pippin", 28, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gimli", 139, DWARF));
fellowshipOfTheRing.add(new TolkienCharacter("Aragorn", 87, MAN);
fellowshipOfTheRing.add(new TolkienCharacter("Boromir", 37, MAN));
// let's verify the names of TolkienCharacter in fellowshipOfTheRing :
assertThat(fellowshipOfTheRing).extracting("name", String.class)
.contains("Boromir", "Gandalf", "Frodo")
.doesNotContain("Sauron", "Elrond");
// you can extract nested property/field like the name of Race :
assertThat(fellowshipOfTheRing).extracting("race.name", String.class)
.contains("Hobbit", "Elf")
.doesNotContain("Orc");
A property with the given name is looked for first, if it doesn't exist then a field with the given name is looked
for, if the field does not exist an IntrospectionError
is thrown, by default private fields are read but
you can change this with Assertions.setAllowComparingPrivateFields(boolean)
, trying to read a private field
when it's not allowed leads to an IntrospectionError
.
Note that the order of extracted property/field values is consistent with the iteration order of the Iterable under
test, for example if it's a HashSet
, you won't be able to make any assumptions on the extracted values
order.
Extracting also support maps, that is, instead of extracting values from an Object, it extract maps values corresponding to the given keys.
Example:
Employee yoda = new Employee(1L, new Name("Yoda"), 800);
Employee luke = new Employee(2L, new Name("Luke"), 22);
Employee han = new Employee(3L, new Name("Han"), 31);
// build two maps
Map<String, Employee> map1 = new HashMap<>();
map1.put("key1", yoda);
map1.put("key2", luke);
Map<String, Employee> map2 = new HashMap<>();
map2.put("key1", yoda);
map2.put("key2", han);
// instead of a list of objects, we have a list of maps
List<Map<String, Employee>> maps = asList(map1, map2);
// extracting a property in that case = get values from maps using property as a key
assertThat(maps).extracting(key2, Employee.class).containsExactly(luke, han);
// non type safe version
assertThat(maps).extracting("key2").containsExactly(luke, han);
assertThat(maps).extracting("key1").containsExactly(yoda, yoda);
// it works with several keys, extracted values being wrapped in a Tuple
assertThat(maps).extracting("key1", "key2").containsExactly(tuple(yoda, luke), tuple(yoda, han));
// unknown keys leads to null (map behavior)
assertThat(maps).extracting("bad key").containsExactly(null, null);
P
- the type of elements extracted.propertyOrField
- the property/field to extract from the Iterable under testextractingType
- type to returnIntrospectionError
- if no field or property exists with the given name in one of the initial
Iterable's element.public AbstractListAssert<?,List<? extends Tuple>,Tuple,ObjectAssert<Tuple>> extracting(String... propertiesOrFields)
It allows you to test fields/properties of the the Iterable's elements instead of testing the elements themselves, which can be much less work!
The Tuple data corresponds to the extracted values of the given fields/properties, for instance if you ask to extract "id", "name" and "email" then each Tuple data will be composed of id, name and email extracted from the element of the initial Iterable (the Tuple's data order is the same as the given fields/properties order).
Let's take an example to make things clearer :
// Build a list of TolkienCharacter, a TolkienCharacter has a name, and age and a Race (a specific class)
// they can be public field or properties, both can be extracted.
List<TolkienCharacter> fellowshipOfTheRing = new ArrayList<TolkienCharacter>();
fellowshipOfTheRing.add(new TolkienCharacter("Frodo", 33, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Sam", 38, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gandalf", 2020, MAIA));
fellowshipOfTheRing.add(new TolkienCharacter("Legolas", 1000, ELF));
fellowshipOfTheRing.add(new TolkienCharacter("Pippin", 28, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gimli", 139, DWARF));
fellowshipOfTheRing.add(new TolkienCharacter("Aragorn", 87, MAN);
fellowshipOfTheRing.add(new TolkienCharacter("Boromir", 37, MAN));
// let's verify 'name' and 'age' of some TolkienCharacter in fellowshipOfTheRing :
assertThat(fellowshipOfTheRing).extracting("name", "age")
.contains(tuple("Boromir", 37),
tuple("Sam", 38),
tuple("Legolas", 1000));
// extract 'name', 'age' and Race name values :
assertThat(fellowshipOfTheRing).extracting("name", "age", "race.name")
.contains(tuple("Boromir", 37, "Man"),
tuple("Sam", 38, "Hobbit"),
tuple("Legolas", 1000, "Elf"));
A property with the given name is looked for first, if it doesn't exist then a field with the given name is looked
for, if the field does not exist an IntrospectionError
is thrown, by default private fields are read but
you can change this with Assertions.setAllowComparingPrivateFields(boolean)
, trying to read a private field
when it's not allowed leads to an IntrospectionError
.
Note that the order of extracted property/field values is consistent with the iteration order of the Iterable under
test, for example if it's a HashSet
, you won't be able to make any assumptions on the extracted values
order.
Extracting also support maps, that is, instead of extracting values from an Object, it extract maps values corresponding to the given keys.
Example:
Employee yoda = new Employee(1L, new Name("Yoda"), 800);
Employee luke = new Employee(2L, new Name("Luke"), 22);
Employee han = new Employee(3L, new Name("Han"), 31);
// build two maps
Map<String, Employee> map1 = new HashMap<>();
map1.put("key1", yoda);
map1.put("key2", luke);
Map<String, Employee> map2 = new HashMap<>();
map2.put("key1", yoda);
map2.put("key2", han);
// instead of a list of objects, we have a list of maps
List<Map<String, Employee>> maps = asList(map1, map2);
// extracting a property in that case = get values from maps using property as a key
assertThat(maps).extracting("key2").containsExactly(luke, han);
assertThat(maps).extracting("key1").containsExactly(yoda, yoda);
// it works with several keys, extracted values being wrapped in a Tuple
assertThat(maps).extracting("key1", "key2").containsExactly(tuple(yoda, luke), tuple(yoda, han));
// unknown keys leads to null (map behavior)
assertThat(maps).extracting("bad key").containsExactly(null, null);
propertiesOrFields
- the properties/fields to extract from the elements of the Iterable under testIntrospectionError
- if one of the given name does not match a field or property in one of the initial
Iterable's element.public <V> AbstractListAssert<?,List<? extends V>,V,ObjectAssert<V>> extracting(Extractor<? super ELEMENT,V> extractor)
It allows to test values from the elements in more safe way than by using extracting(String)
, as it
doesn't utilize introspection.
Let's have a look at an example :
// Build a list of TolkienCharacter, a TolkienCharacter has a name, and age and a Race (a specific class)
// they can be public field or properties, both can be extracted.
List<TolkienCharacter> fellowshipOfTheRing = new ArrayList<TolkienCharacter>();
fellowshipOfTheRing.add(new TolkienCharacter("Frodo", 33, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Sam", 38, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gandalf", 2020, MAIA));
fellowshipOfTheRing.add(new TolkienCharacter("Legolas", 1000, ELF));
fellowshipOfTheRing.add(new TolkienCharacter("Pippin", 28, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gimli", 139, DWARF));
fellowshipOfTheRing.add(new TolkienCharacter("Aragorn", 87, MAN);
fellowshipOfTheRing.add(new TolkienCharacter("Boromir", 37, MAN));
// this extracts the race
Extractor<TolkienCharacter, Race> race = new Extractor<TolkienCharacter, Race>() {
@Override
public Race extract(TolkienCharacter input) {
return input.getRace();
}
}
// fellowship has hobbitses, right, my presioussss?
assertThat(fellowshipOfTheRing).extracting(TolkienCharacter::getRace).contains(HOBBIT);
Note that the order of extracted property/field values is consistent with the iteration order of the Iterable under
test, for example if it's a HashSet
, you won't be able to make any assumptions on the extracted values
order.V
- the type of elements extracted.extractor
- the object transforming input object to desired onepublic <V,EXCEPTION extends Exception> AbstractListAssert<?,List<? extends V>,V,ObjectAssert<V>> extracting(ThrowingExtractor<? super ELEMENT,V,EXCEPTION> extractor)
Any checked exception raised in the extractor is rethrown wrapped in a RuntimeException
.
It allows to test values from the elements in more safe way than by using extracting(String)
, as it
doesn't utilize introspection.
Let's have a look at an example :
// Build a list of TolkienCharacter, a TolkienCharacter has a name, and age and a Race (a specific class)
// they can be public field or properties, both can be extracted.
List<TolkienCharacter> fellowshipOfTheRing = new ArrayList<TolkienCharacter>();
fellowshipOfTheRing.add(new TolkienCharacter("Frodo", 33, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Sam", 38, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gandalf", 2020, MAIA));
fellowshipOfTheRing.add(new TolkienCharacter("Legolas", 1000, ELF));
fellowshipOfTheRing.add(new TolkienCharacter("Pippin", 28, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gimli", 139, DWARF));
fellowshipOfTheRing.add(new TolkienCharacter("Aragorn", 87, MAN);
fellowshipOfTheRing.add(new TolkienCharacter("Boromir", 37, MAN));
assertThat(fellowshipOfTheRing).extracting(input -> {
if (input.getAge() < 20) {
throw new Exception("age < 20");
}
return input.getName();
}).contains("Frodo");
Note that the order of extracted property/field values is consistent with the iteration order of the Iterable under
test, for example if it's a HashSet
, you won't be able to make any assumptions on the extracted values
order.EXCEPTION
- the exception type of ThrowingExtractor
V
- the type of elements extracted.extractor
- the object transforming input object to desired onepublic <V> AbstractListAssert<?,List<? extends V>,V,ObjectAssert<V>> flatExtracting(Extractor<? super ELEMENT,? extends Collection<V>> extractor)
It allows testing the results of extracting values that are represented by Iterables.
For example:
CartoonCharacter bart = new CartoonCharacter("Bart Simpson");
CartoonCharacter lisa = new CartoonCharacter("Lisa Simpson");
CartoonCharacter maggie = new CartoonCharacter("Maggie Simpson");
CartoonCharacter homer = new CartoonCharacter("Homer Simpson");
homer.addChildren(bart, lisa, maggie);
CartoonCharacter pebbles = new CartoonCharacter("Pebbles Flintstone");
CartoonCharacter fred = new CartoonCharacter("Fred Flintstone");
fred.getChildren().add(pebbles);
Extractor<CartoonCharacter, List<CartoonCharacter>> childrenOf = new Extractor<CartoonChildren, List<CartoonChildren>>() {
@Override
public List<CartoonChildren> extract(CartoonCharacter input) {
return input.getChildren();
}
}
List<CartoonCharacter> parents = newArrayList(homer, fred);
// check children
assertThat(parent).flatExtracting(CartoonCharacter::getChildren)
.containsOnly(bart, lisa, maggie, pebbles);
The order of extracted values is consistent with both the order of the collection itself, as well as the extracted
collections.V
- the type of elements extracted.extractor
- the object transforming input object to an Iterable
of desired onesNullPointerException
- if one of the Iterable
's element is null.public <V,EXCEPTION extends Exception> AbstractListAssert<?,List<? extends V>,V,ObjectAssert<V>> flatExtracting(ThrowingExtractor<? super ELEMENT,? extends Collection<V>,EXCEPTION> extractor)
It allows testing the results of extracting values that are represented by Iterables.
For example:
CartoonCharacter bart = new CartoonCharacter("Bart Simpson");
CartoonCharacter lisa = new CartoonCharacter("Lisa Simpson");
CartoonCharacter maggie = new CartoonCharacter("Maggie Simpson");
CartoonCharacter homer = new CartoonCharacter("Homer Simpson");
homer.addChildren(bart, lisa, maggie);
CartoonCharacter pebbles = new CartoonCharacter("Pebbles Flintstone");
CartoonCharacter fred = new CartoonCharacter("Fred Flintstone");
fred.getChildren().add(pebbles);
List<CartoonCharacter> parents = newArrayList(homer, fred);
// check children
assertThat(parent).flatExtracting((ThrowingExtractor<CartoonCharacter, List<CartoonCharacter>, Exception>)input -> {
if (input.getChildren().size() == 0) {
throw new Exception("no children");
}
return input.getChildren();
}).containsOnly(bart, lisa, maggie, pebbles);
The order of extracted values is consistent with both the order of the collection itself, as well as the extracted
collections.V
- the type of elements extracted.EXCEPTION
- the exception type of ThrowingExtractor
extractor
- the object transforming input object to an Iterable
of desired onesNullPointerException
- if one of the Iterable
's element is null.public AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> flatExtracting(Extractor<? super ELEMENT,?>... extractors)
Iterable
's element according to the given Extractor
s
and concatenate/flatten the extracted values in a list that is used as the new object under test.
If extracted values were not flattened, instead of a simple list like (given 2 extractors) :
element1.value1, element1.value2, element2.value1, element2.value2, ...we would get a list of list like :
list(element1.value1, element1.value2), list(element2.value1, element2.value2), ...
Code example:
// fellowshipOfTheRing is a List<TolkienCharacter>
// values are extracted in order and flattened : age1, name1, age2, name2, age3 ...
assertThat(fellowshipOfTheRing).flatExtracting(TolkienCharacter::getAge,
TolkienCharacter::getName)
.contains(33 ,"Frodo",
1000, "Legolas",
87, "Aragorn");
The resulting extracted values list is ordered by Iterable
's element first and then extracted values,
this is why is in the example that age values come before names.extractors
- all the extractors to apply on each actual Iterable
's elementspublic <EXCEPTION extends Exception> AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> flatExtracting(ThrowingExtractor<? super ELEMENT,?,EXCEPTION>... extractors)
Iterable
's element according to the given ThrowingExtractor
s
and concatenate/flatten the extracted values in a list that is used as the new object under test.
If extracted values were not flattened, instead of a simple list like (given 2 extractors) :
element1.value1, element1.value2, element2.value1, element2.value2, ...we would get a list of list like :
list(element1.value1, element1.value2), list(element2.value1, element2.value2), ...
Code example:
// fellowshipOfTheRing is a List<TolkienCharacter>
// values are extracted in order and flattened : age1, name1, age2, name2, age3 ...
assertThat(fellowshipOfTheRing).flatExtracting(input -> {
if (input.getAge() < 20) {
throw new Exception("age < 20");
}
return input.getName();
}, input2 -> {
if (input2.getAge() < 20) {
throw new Exception("age < 20");
}
return input2.getAge();
}).contains(33 ,"Frodo",
1000, "Legolas",
87, "Aragorn");
The resulting extracted values list is ordered by Iterable
's element first and then extracted values,
this is why is in the example that age values come before names.EXCEPTION
- the exception type of ThrowingExtractor
extractors
- all the extractors to apply on each actual Iterable
's elementspublic AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> flatExtracting(String fieldOrPropertyName)
It allows testing the elements of extracting values that are represented by iterables or arrays.
For example:
CartoonCharacter bart = new CartoonCharacter("Bart Simpson");
CartoonCharacter lisa = new CartoonCharacter("Lisa Simpson");
CartoonCharacter maggie = new CartoonCharacter("Maggie Simpson");
CartoonCharacter homer = new CartoonCharacter("Homer Simpson");
homer.addChildren(bart, lisa, maggie);
CartoonCharacter pebbles = new CartoonCharacter("Pebbles Flintstone");
CartoonCharacter fred = new CartoonCharacter("Fred Flintstone");
fred.getChildren().add(pebbles);
List<CartoonCharacter> parents = newArrayList(homer, fred);
// check children
assertThat(parents).flatExtracting("children")
.containsOnly(bart, lisa, maggie, pebbles);
The order of extracted values is consisted with both the order of the collection itself, as well as the extracted
collections.fieldOrPropertyName
- the object transforming input object to an Iterable of desired onesIllegalArgumentException
- if one of the extracted property value was not an array or an iterable.public AbstractListAssert<?,List<? extends Tuple>,Tuple,ObjectAssert<Tuple>> extracting(Function<ELEMENT,?>... extractors)
Function
s to extract the values from the Iterable
's elements into a new Iterable
composed of Tuple
s (a simple data structure containing the extracted values), this new Iterable
becoming the
object under test.
It allows you to test values from the Iterable
's elements instead of testing the elements themselves, which sometimes can be
much less work!
The Tuple data corresponds to the extracted values from the Iterable's elements, for instance if you pass functions extracting "id", "name" and "email" values then each Tuple data will be composed of an id, a name and an email extracted from the element of the initial Iterable (the Tuple's data order is the same as the given functions order).
Let's take a look at an example to make things clearer :
// Build a list of TolkienCharacter, a TolkienCharacter has a name, and age and a Race (a specific class)
// they can be public field or properties, both can be extracted.
List<TolkienCharacter> fellowshipOfTheRing = new ArrayList<TolkienCharacter>();
fellowshipOfTheRing.add(new TolkienCharacter("Frodo", 33, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Sam", 38, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gandalf", 2020, MAIA));
fellowshipOfTheRing.add(new TolkienCharacter("Legolas", 1000, ELF));
fellowshipOfTheRing.add(new TolkienCharacter("Pippin", 28, HOBBIT));
fellowshipOfTheRing.add(new TolkienCharacter("Gimli", 139, DWARF));
fellowshipOfTheRing.add(new TolkienCharacter("Aragorn", 87, MAN);
fellowshipOfTheRing.add(new TolkienCharacter("Boromir", 37, MAN));
// let's verify 'name', 'age' and Race of some TolkienCharacter in fellowshipOfTheRing :
assertThat(fellowshipOfTheRing).extracting(TolkienCharacter::getName,
character > character.getAge(),
TolkienCharacter::getRace)
.containsOnly(tuple("Frodo", 33, HOBBIT),
tuple("Sam", 38, HOBBIT),
tuple("Gandalf", 2020, MAIA),
tuple("Legolas", 1000, ELF),
tuple("Pippin", 28, HOBBIT),
tuple("Gimli", 139, DWARF),
tuple("Aragorn", 87, MAN),
tuple("Boromir", 37, MAN));
You can use lambda expression or a method reference to extract the expected values.
Use Tuple.tuple(Object...)
to initialize the expected values.
Note that the order of the extracted tuples list is consistent with the iteration order of the Iterable under test,
for example if it's a HashSet
, you won't be able to make any assumptions on the extracted tuples order.
extractors
- the extractor functions to extract a value from an element of the Iterable under test.public AbstractListAssert<?,List<? extends Object>,Object,ObjectAssert<Object>> flatExtracting(String... fieldOrPropertyNames)
Iterable
's element and
flatten the extracted values in a list that is used as the new object under test.
Given 2 properties, if the extracted values were not flattened, instead having a simple list like :
element1.value1, element1.value2, element2.value1, element2.value2, ...... we would get a list of list :
list(element1.value1, element1.value2), list(element2.value1, element2.value2), ...
Code example:
// fellowshipOfTheRing is a List<TolkienCharacter>
// values are extracted in order and flattened : age1, name1, age2, name2, age3 ...
assertThat(fellowshipOfTheRing).flatExtracting("age", "name")
.contains(33 ,"Frodo",
1000, "Legolas",
87, "Aragorn");
fieldOrPropertyNames
- the field and/or property names to extract from each actual Iterable
's elementIllegalArgumentException
- if fieldOrPropertyNames vararg is null or emptypublic SELF containsExactlyElementsOf(Iterable<? extends ELEMENT> iterable)
ObjectEnumerableAssert.containsExactly(Object...)
but handle the Iterable
to array conversion : verifies that
actual contains exactly the elements of the given iterable and nothing else in the same order.
Example:
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertion will pass
assertThat(elvesRings).containsExactlyElementsOf(newLinkedList(vilya, nenya, narya));
// assertion will fail as actual and expected order differ
assertThat(elvesRings).containsExactlyElementsOf(newLinkedList(nenya, vilya, narya));
If you want to directly specify the elements to check, use containsExactly(Object...)
instead.
containsExactlyElementsOf
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
iterable
- the given Iterable
we will get elements from.this
assertion object.public SELF containsOnlyElementsOf(Iterable<? extends ELEMENT> iterable)
ObjectEnumerableAssert.containsOnly(Object[])
: verifies that actual contains all the elements of the given
iterable and nothing else, in any order and ignoring duplicates (i.e. once a value is found, its duplicates are also considered found).
Use ObjectEnumerableAssert.isSubsetOf(Iterable)
to check that actual is a subset of given iterable
Example:
Iterable<Ring> rings = newArrayList(nenya, vilya);
// assertion will pass
assertThat(rings).containsOnlyElementsOf(newArrayList(nenya, vilya))
.containsOnlyElementsOf(newArrayList(nenya, nenya, vilya, vilya));
assertThat(newArrayList(nenya, nenya, vilya, vilya)).containsOnlyElementsOf(rings);
// assertion will fail as actual does not contain narya
assertThat(rings).containsOnlyElementsOf(newLinkedList(nenya, vilya, narya));
// assertion will fail as actual contains nenya
assertThat(rings).containsOnlyElementsOf(newLinkedList(vilya));
If you want to directly specify the elements to check, use containsOnly(Object...)
instead.
containsOnlyElementsOf
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
iterable
- the given Iterable
we will get elements from.this
assertion object.public SELF hasSameElementsAs(Iterable<? extends ELEMENT> iterable)
ObjectEnumerableAssert.containsOnlyElementsOf(Iterable)
: verifies that actual contains all the elements of the
given iterable and nothing else, in any order.
Example:
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertions will pass:
assertThat(elvesRings).hasSameElementsAs(newArrayList(nenya, narya, vilya))
.hasSameElementsAs(newArrayList(nenya, narya, vilya, nenya));
// assertions will fail:
assertThat(elvesRings).hasSameElementsAs(newArrayList(nenya, narya));
assertThat(elvesRings).hasSameElementsAs(newArrayList(nenya, narya, vilya, oneRing));
hasSameElementsAs
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
iterable
- the Iterable whose elements we expect to be presentpublic <T> SELF usingComparatorForElementFieldsWithNames(Comparator<T> comparator, String... elementPropertyOrFieldNames)
To be used, comparators need to be specified by this method before calling any of:
usingFieldByFieldElementComparator()
usingElementComparatorOnFields(java.lang.String...)
usingElementComparatorIgnoringFields(java.lang.String...)
usingRecursiveFieldByFieldElementComparator()
Comparators specified by this method have precedence over comparators specified by
usingComparatorForElementFieldsWithType
.
Example:
public class TolkienCharacter {
private String name;
private double height;
// constructor omitted
}
TolkienCharacter frodo = new TolkienCharacter("Frodo", 1.2);
TolkienCharacter tallerFrodo = new TolkienCharacter("Frodo", 1.3);
TolkienCharacter reallyTallFrodo = new TolkienCharacter("Frodo", 1.9);
Comparator<Double> closeEnough = new Comparator<Double>() {
double precision = 0.5;
public int compare(Double d1, Double d2) {
return Math.abs(d1 - d2) <= precision ? 0 : 1;
}
};
// assertions will pass
assertThat(asList(frodo)).usingComparatorForElementFieldsWithNames(closeEnough, "height")
.usingFieldByFieldElementComparator()
.contains(tallerFrodo);
assertThat(asList(frodo)).usingComparatorForElementFieldsWithNames(closeEnough, "height")
.usingElementComparatorOnFields("height")
.contains(tallerFrodo);
assertThat(asList(frodo)).usingComparatorForElementFieldsWithNames(closeEnough, "height")
.usingElementComparatorIgnoringFields("name")
.contains(tallerFrodo);
assertThat(asList(frodo)).usingComparatorForElementFieldsWithNames(closeEnough, "height")
.usingRecursiveFieldByFieldElementComparator()
.contains(tallerFrodo);
// assertion will fail
assertThat(asList(frodo)).usingComparatorForElementFieldsWithNames(closeEnough, "height")
.usingFieldByFieldElementComparator()
.containsExactly(reallyTallFrodo);
T
- the type of elements to compare.comparator
- the Comparator
to useelementPropertyOrFieldNames
- the names of the properties and/or fields of the elements the comparator should be used forthis
assertions objectpublic <T> SELF usingComparatorForElementFieldsWithType(Comparator<T> comparator, Class<T> type)
To be used, comparators need to be specified by this method before calling any of:
usingFieldByFieldElementComparator()
usingElementComparatorOnFields(java.lang.String...)
usingElementComparatorIgnoringFields(java.lang.String...)
usingRecursiveFieldByFieldElementComparator()
Comparators specified by usingComparatorForElementFieldsWithNames
have precedence over comparators specified by this method.
Example:
public class TolkienCharacter {
private String name;
private double height;
// constructor omitted
}
TolkienCharacter frodo = new TolkienCharacter("Frodo", 1.2);
TolkienCharacter tallerFrodo = new TolkienCharacter("Frodo", 1.3);
TolkienCharacter reallyTallFrodo = new TolkienCharacter("Frodo", 1.9);
Comparator<Double> closeEnough = new Comparator<Double>() {
double precision = 0.5;
public int compare(Double d1, Double d2) {
return Math.abs(d1 - d2) <= precision ? 0 : 1;
}
};
// assertions will pass
assertThat(Arrays.asList(frodo)).usingComparatorForElementFieldsWithType(closeEnough, Double.class)
.usingFieldByFieldElementComparator()
.contains(tallerFrodo);
assertThat(Arrays.asList(frodo)).usingComparatorForElementFieldsWithType(closeEnough, Double.class)
.usingElementComparatorOnFields("height")
.contains(tallerFrodo);
assertThat(Arrays.asList(frodo)).usingComparatorForElementFieldsWithType(closeEnough, Double.class)
.usingElementComparatorIgnoringFields("name")
.contains(tallerFrodo);
assertThat(Arrays.asList(frodo)).usingComparatorForElementFieldsWithType(closeEnough, Double.class)
.usingRecursiveFieldByFieldElementComparator()
.contains(tallerFrodo);
// assertion will fail
assertThat(Arrays.asList(frodo)).usingComparatorForElementFieldsWithType(closeEnough, Double.class)
.usingFieldByFieldElementComparator()
.contains(reallyTallFrodo);
T
- the type of elements to compare.comparator
- the Comparator
to usetype
- the Class
of the type of the element fields the comparator should be used forthis
assertions objectpublic <T> SELF usingComparatorForType(Comparator<T> comparator, Class<T> type)
usingComparatorForElementFieldsWithType(java.util.Comparator<T>, java.lang.Class<T>)
by applying comparator specified for given type
to elements themselves, not only to their fields.
Usage of this method affects comparators set by next methods:
usingFieldByFieldElementComparator()
usingElementComparatorOnFields(java.lang.String...)
usingElementComparatorIgnoringFields(java.lang.String...)
usingRecursiveFieldByFieldElementComparator()
Example:
// assertion will pass
assertThat(asList("some", new BigDecimal("4.2")))
.usingComparatorForType(BIG_DECIMAL_COMPARATOR, BigDecimal.class)
.contains(new BigDecimal("4.20"));
T
- the type of elements to compare.comparator
- the Comparator
to usetype
- the Class
of the type of the element or element fields the comparator should be used forthis
assertions objectpublic SELF usingFieldByFieldElementComparator()
equals
method to compare group elements for incoming assertion checks. Private fields
are included but this can be disabled using Assertions.setAllowExtractingPrivateFields(boolean)
.
This can be handy if equals
method of the objects to compare does not suit you.
Note that the comparison is not recursive, if one of the fields/properties is an Object, it will be compared
to the other field/property using its equals
method.
You can specify a custom comparator per name or type of element field with
usingComparatorForElementFieldsWithNames(Comparator, String...)
and usingComparatorForElementFieldsWithType(Comparator, Class)
.
Example:
TolkienCharacter frodo = new TolkienCharacter("Frodo", 33, HOBBIT);
TolkienCharacter frodoClone = new TolkienCharacter("Frodo", 33, HOBBIT);
// Fail if equals has not been overridden in TolkienCharacter as equals default implementation only compares references
assertThat(newArrayList(frodo)).contains(frodoClone);
// frodo and frodoClone are equals when doing a field by field comparison.
assertThat(newArrayList(frodo)).usingFieldByFieldElementComparator().contains(frodoClone);
this
assertion object.public SELF usingRecursiveFieldByFieldElementComparator()
equals
method to compare group elements for incoming
assertion checks. This can be useful if actual's equals
implementation does not suit you.
The recursive property/field comparison is not applied on fields having a custom equals
implementation, i.e. the overridden equals
method will be used instead of a field/property by field/property
comparison.
The recursive comparison handles cycles.
You can specify a custom comparator per (nested) name or type of element field with
usingComparatorForElementFieldsWithNames
and usingComparatorForElementFieldsWithType
.
The objects to compare can be of different types but must have the same properties/fields. For example if actual
object has a name
String field, the other object must also have one.
If an object has a field and a property with the same name, the property value will be used over the field.
Example:
TolkienCharacter frodo = new TolkienCharacter("Frodo", 33, HOBBIT);
TolkienCharacter pippin = new TolkienCharacter("Pippin", 28, HOBBIT);
frodo.setFriend(pippin);
pippin.setFriend(frodo);
TolkienCharacter frodoClone = new TolkienCharacter("Frodo", 33, HOBBIT);
TolkienCharacter pippinClone = new TolkienCharacter("Pippin", 28, HOBBIT);
frodoClone.setFriend(pippinClone);
pippinClone.setFriend(frodoClone);
List<TolkienCharacter> hobbits = Arrays.asList(frodo, pippin);
// fails if equals has not been overridden in TolkienCharacter as it would compares object references
assertThat(hobbits).contains(frodoClone, pippinClone);
// frodo/frodoClone and pippin/pippinClone are equals when doing a recursive property/field by property/field comparison
assertThat(hobbits).usingRecursiveFieldByFieldElementComparator()
.contains(frodoClone, pippinClone);
this
assertion object.public SELF usingElementComparatorOnFields(String... fields)
equals
method to compare group elements for
incoming assertion checks. Private fields are included but this can be disabled using
Assertions.setAllowExtractingPrivateFields(boolean)
.
This can be handy if equals
method of the objects to compare does not suit you.
You can specify a custom comparator per name or type of element field with
usingComparatorForElementFieldsWithNames(Comparator, String...)
and usingComparatorForElementFieldsWithType(Comparator, Class)
.
Note that the comparison is not recursive, if one of the fields/properties is an Object, it will be compared
to the other field/property using its equals
method.
TolkienCharacter frodo = new TolkienCharacter("Frodo", 33, HOBBIT);
TolkienCharacter sam = new TolkienCharacter("Sam", 38, HOBBIT);
// frodo and sam both are hobbits, so they are equals when comparing only race
assertThat(newArrayList(frodo)).usingElementComparatorOnFields("race").contains(sam); // OK
// ... but not when comparing both name and race
assertThat(newArrayList(frodo)).usingElementComparatorOnFields("name", "race").contains(sam); // FAIL
fields
- the fields/properties to compare using element comparatorsthis
assertion object.protected SELF usingComparisonStrategy(ComparisonStrategy comparisonStrategy)
public SELF usingElementComparatorIgnoringFields(String... fields)
equals
method to compare group elements for
incoming assertion checks. Private fields are included but this can be disabled using
Assertions.setAllowExtractingPrivateFields(boolean)
.
This can be handy if equals
method of the objects to compare does not suit you.
You can specify a custom comparator per name or type of element field with
usingComparatorForElementFieldsWithNames(Comparator, String...)
and usingComparatorForElementFieldsWithType(Comparator, Class)
.
Note that the comparison is not recursive, if one of the fields/properties is an Object, it will be compared
to the other field/property using its equals
method.
TolkienCharacter frodo = new TolkienCharacter("Frodo", 33, HOBBIT);
TolkienCharacter sam = new TolkienCharacter("Sam", 38, HOBBIT);
// frodo and sam both are hobbits, so they are equals when comparing only race (i.e. ignoring all other fields)
assertThat(newArrayList(frodo)).usingElementComparatorIgnoringFields("name", "age").contains(sam); // OK
// ... but not when comparing both name and race
assertThat(newArrayList(frodo)).usingElementComparatorIgnoringFields("age").contains(sam); // FAIL
fields
- the fields/properties to compare using element comparatorsthis
assertion object.public SELF inHexadecimal()
It can be useful to better understand what the error was with a more meaningful error message.
Example
final List<Byte> bytes = newArrayList((byte) 0x10, (byte) 0x20);
With standard error message:
assertThat(bytes).contains((byte) 0x30);
Expecting:
<[16, 32]>
to contain:
<[48]>
but could not find:
<[48]>
With Hexadecimal error message:
assertThat(bytes).inHexadecimal().contains((byte) 0x30);
Expecting:
<[0x10, 0x20]>
to contain:
<[0x30]>
but could not find:
<[0x30]>
inHexadecimal
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
this
assertion object.public SELF inBinary()
Example:
final List<Byte> bytes = newArrayList((byte) 0x10, (byte) 0x20);
With standard error message:
assertThat(bytes).contains((byte) 0x30);
Expecting:
<[16, 32]>
to contain:
<[48]>
but could not find:
<[48]>
With binary error message:
assertThat(bytes).inBinary().contains((byte) 0x30);
Expecting:
<[0b00010000, 0b00100000]>
to contain:
<[0b00110000]>
but could not find:
<[0b00110000]>
inBinary
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
this
assertion object.public AbstractListAssert<?,List<? extends ELEMENT>,ELEMENT,ObjectAssert<ELEMENT>> filteredOn(String propertyOrFieldName, Object expectedValue)
expectedValue
, the
property/field is specified by propertyOrFieldName
parameter.
The filter first tries to get the value from a property (named propertyOrFieldName
), if no such property
exists it tries to read the value from a field. Reading private fields is supported by default, this can be
globally disabled by calling Assertions.setAllowExtractingPrivateFields(false)
.
When reading nested property/field, if an intermediate value is null the whole nested property/field is considered to be null, thus reading "address.street.name" value will return null if "street" value is null.
As an example, let's check all employees 800 years old (yes, special employees):
Employee yoda = new Employee(1L, new Name("Yoda"), 800);
Employee obiwan = new Employee(2L, new Name("Obiwan"), 800);
Employee luke = new Employee(3L, new Name("Luke", "Skywalker"), 26);
Employee noname = new Employee(4L, null, 50);
List<Employee> employees = newArrayList(yoda, luke, obiwan, noname);
assertThat(employees).filteredOn("age", 800)
.containsOnly(yoda, obiwan);
Nested properties/fields are supported:
// Name is bean class with 'first' and 'last' String properties
// name is null for noname => it does not match the filter on "name.first"
assertThat(employees).filteredOn("name.first", "Luke")
.containsOnly(luke);
assertThat(employees).filteredOn("name.last", "Vader")
.isEmpty();
If you want to filter on null value, use filteredOnNull(String)
as Java will resolve the call to
filteredOn(String, FilterOperator)
instead of this method.
An IntrospectionError
is thrown if the given propertyOrFieldName can't be found in one of the iterable
elements.
You can chain filters:
// fellowshipOfTheRing is a list of TolkienCharacter having race and name fields
// 'not' filter is statically imported from Assertions.not
assertThat(fellowshipOfTheRing).filteredOn("race.name", "Man")
.filteredOn("name", not("Boromir"))
.containsOnly(aragorn);
If you need more complex filter, use filteredOn(Predicate)
or filteredOn(Condition)
.propertyOrFieldName
- the name of the property or field to readexpectedValue
- the value to compare element's property or field withIllegalArgumentException
- if the given propertyOrFieldName is null
or empty.IntrospectionError
- if the given propertyOrFieldName can't be found in one of the iterable elements.public AbstractListAssert<?,List<? extends ELEMENT>,ELEMENT,ObjectAssert<ELEMENT>> filteredOnNull(String propertyOrFieldName)
propertyOrFieldName
is null.
The filter first tries to get the value from a property (named propertyOrFieldName
), if no such property
exists it tries to read the value from a field. Reading private fields is supported by default, this can be
globally disabled by calling Assertions.setAllowExtractingPrivateFields(false)
.
When reading nested property/field, if an intermediate value is null the whole nested property/field is considered to be null, thus reading "address.street.name" value will return null if "street" value is null.
As an example, let's check all employees 800 years old (yes, special employees):
Employee yoda = new Employee(1L, new Name("Yoda"), 800);
Employee obiwan = new Employee(2L, new Name("Obiwan"), 800);
Employee luke = new Employee(3L, new Name("Luke", "Skywalker"), 26);
Employee noname = new Employee(4L, null, 50);
List<Employee> employees = newArrayList(yoda, luke, obiwan, noname);
assertThat(employees).filteredOnNull("name")
.containsOnly(noname);
Nested properties/fields are supported:
// Name is bean class with 'first' and 'last' String properties
assertThat(employees).filteredOnNull("name.last")
.containsOnly(yoda, obiwan, noname);
An IntrospectionError
is thrown if the given propertyOrFieldName can't be found in one of the iterable
elements.
If you need more complex filter, use filteredOn(Predicate)
or filteredOn(Condition)
.
propertyOrFieldName
- the name of the property or field to readIntrospectionError
- if the given propertyOrFieldName can't be found in one of the iterable elements.public AbstractListAssert<?,List<? extends ELEMENT>,ELEMENT,ObjectAssert<ELEMENT>> filteredOn(String propertyOrFieldName, FilterOperator<?> filterOperator)
FilterOperator
, the property/field is specified by propertyOrFieldName
parameter.
The existing filters are :
Whatever filter is applied, it first tries to get the value from a property (named propertyOrFieldName
), if
no such property exists it tries to read the value from a field. Reading private fields is supported by default,
this can be globally disabled by calling Assertions.setAllowExtractingPrivateFields(false)
.
When reading nested property/field, if an intermediate value is null the whole nested property/field is considered to be null, thus reading "address.street.name" value will return null if "street" value is null.
As an example, let's check stuff on some special employees :
Employee yoda = new Employee(1L, new Name("Yoda"), 800);
Employee obiwan = new Employee(2L, new Name("Obiwan"), 800);
Employee luke = new Employee(3L, new Name("Luke", "Skywalker"), 26);
List<Employee> employees = newArrayList(yoda, luke, obiwan, noname);
// 'not' filter is statically imported from Assertions.not
assertThat(employees).filteredOn("age", not(800))
.containsOnly(luke);
// 'in' filter is statically imported from Assertions.in
// Name is bean class with 'first' and 'last' String properties
assertThat(employees).filteredOn("name.first", in("Yoda", "Luke"))
.containsOnly(yoda, luke);
// 'notIn' filter is statically imported from Assertions.notIn
assertThat(employees).filteredOn("name.first", notIn("Yoda", "Luke"))
.containsOnly(obiwan);
An IntrospectionError
is thrown if the given propertyOrFieldName can't be found in one of the iterable
elements.
Note that combining filter operators is not supported, thus the following code is not correct:
// Combining filter operators like not(in(800)) is NOT supported
// -> throws UnsupportedOperationException
assertThat(employees).filteredOn("age", not(in(800)))
.contains(luke);
You can chain filters:
// fellowshipOfTheRing is a list of TolkienCharacter having race and name fields
// 'not' filter is statically imported from Assertions.not
assertThat(fellowshipOfTheRing).filteredOn("race.name", "Man")
.filteredOn("name", not("Boromir"))
.containsOnly(aragorn);
If you need more complex filter, use filteredOn(Predicate)
or filteredOn(Condition)
.propertyOrFieldName
- the name of the property or field to readfilterOperator
- the filter operator to applyIllegalArgumentException
- if the given propertyOrFieldName is null
or empty.public AbstractListAssert<?,List<? extends ELEMENT>,ELEMENT,ObjectAssert<ELEMENT>> filteredOn(Condition<? super ELEMENT> condition)
Condition
.
If you prefer Predicate
over Condition
, use filteredOn(Predicate)
.
Example : check old employees whose age > 100:
Employee yoda = new Employee(1L, new Name("Yoda"), 800);
Employee obiwan = new Employee(2L, new Name("Obiwan"), 800);
Employee luke = new Employee(3L, new Name("Luke", "Skywalker"), 26);
Employee noname = new Employee(4L, null, 50);
List<Employee> employees = newArrayList(yoda, luke, obiwan, noname);
// old employee condition, "old employees" describes the condition in error message
// you just have to implement 'matches' method
Condition<Employee> oldEmployees = new Condition<Employee>("old employees") {
@Override
public boolean matches(Employee employee) {
return employee.getAge() > 100;
}
};
}
assertThat(employees).filteredOn(oldEmployees)
.containsOnly(yoda, obiwan);
You can combine Condition
with condition operator like Not
:
// 'not' filter is statically imported from Assertions.not
assertThat(employees).filteredOn(not(oldEmployees))
.contains(luke, noname);
condition
- the filter condition / predicateIllegalArgumentException
- if the given condition is null
.public ELEMENT_ASSERT first()
Iterable
under test.
By default available assertions after first()
are Object
assertions, it is possible though to
get more specific assertions if you create IterableAssert
with either:
assertThat(Iterable, element assert class)
assertThat(Iterable, element assert factory)
Example: default Object
assertions
// default iterable assert => element assert is ObjectAssert
Iterable<TolkienCharacter> hobbits = newArrayList(frodo, sam, pippin);
// assertion succeeds, only Object assertions are available after first()
assertThat(hobbits).first()
.isEqualTo(frodo);
// assertion fails
assertThat(hobbits).first()
.isEqualTo(pippin);
If you have created the Iterable assertion using an AssertFactory
or the element assert class,
you will be able to chain first()
with more specific typed assertion.
Example: use of String
assertions after first()
Iterable<String> hobbits = newArrayList("frodo", "sam", "pippin");
// assertion succeeds
// String assertions are available after first()
assertThat(hobbits, StringAssert.class).first()
.startsWith("fro")
.endsWith("do");
// assertion fails
assertThat(hobbits, StringAssert.class).first()
.startsWith("pip");
AssertionError
- if the actual Iterable
is empty.public ELEMENT_ASSERT last()
Iterable
under test.
By default available assertions after last()
are Object
assertions, it is possible though to
get more specific assertions if you create IterableAssert
with either:
assertThat(Iterable, element assert class)
assertThat(Iterable, element assert factory)
Example: default Object
assertions
// default iterable assert => element assert is ObjectAssert
Iterable<TolkienCharacter> hobbits = newArrayList(frodo, sam, pippin);
// assertion succeeds, only Object assertions are available after last()
assertThat(hobbits).last()
.isEqualTo(pippin);
// assertion fails
assertThat(hobbits).last()
.isEqualTo(frodo);
If you have created the Iterable assertion using an AssertFactory
or the element assert class,
you will be able to chain last()
with more specific typed assertion.
Example: use of String
assertions after last()
Iterable<String> hobbits = newArrayList("frodo", "sam", "pippin");
// assertion succeeds
// String assertions are available after last()
assertThat(hobbits, StringAssert.class).last()
.startsWith("pi")
.endsWith("in");
// assertion fails
assertThat(hobbits, StringAssert.class).last()
.startsWith("fro");
AssertionError
- if the actual Iterable
is empty.public ELEMENT_ASSERT element(int index)
Iterable
under test.
By default available assertions after element(index)
are Object
assertions, it is possible though to
get more specific assertions if you create IterableAssert
with either:
assertThat(Iterable, element assert class)
assertThat(Iterable, element assert factory)
Example: default Object
assertions
// default iterable assert => element assert is ObjectAssert
Iterable<TolkienCharacter> hobbits = newArrayList(frodo, sam, pippin);
// assertion succeeds, only Object assertions are available after element(index)
assertThat(hobbits).element(1)
.isEqualTo(sam);
// assertion fails
assertThat(hobbits).element(1)
.isEqualTo(pippin);
If you have created the Iterable assertion using an AssertFactory
or the element assert class,
you will be able to chain element(index)
with more specific typed assertion.
Example: use of String
assertions after element(index)
Iterable<String> hobbits = newArrayList("frodo", "sam", "pippin");
// assertion succeeds
// String assertions are available after element(index)
assertThat(hobbits, StringAssert.class).element(1)
.startsWith("sa")
.endsWith("am");
// assertion fails
assertThat(hobbits, StringAssert.class).element(1)
.startsWith("fro");
index
- the element's indexAssertionError
- if the given index is out of bound.protected abstract ELEMENT_ASSERT toAssert(ELEMENT value, String description)
public AbstractListAssert<?,List<? extends ELEMENT>,ELEMENT,ObjectAssert<ELEMENT>> filteredOn(Predicate<? super ELEMENT> predicate)
Predicate
.
Example : check old employees whose age > 100:
Employee yoda = new Employee(1L, new Name("Yoda"), 800);
Employee obiwan = new Employee(2L, new Name("Obiwan"), 800);
Employee luke = new Employee(3L, new Name("Luke", "Skywalker"), 26);
List<Employee> employees = newArrayList(yoda, luke, obiwan);
assertThat(employees).filteredOn(employee -> employee.getAge() > 100)
.containsOnly(yoda, obiwan);
predicate
- the filter predicateIllegalArgumentException
- if the given predicate is null
.public SELF allMatch(Predicate<? super ELEMENT> predicate)
Predicate
.
Example :
Iterable<String> abc = newArrayList("a", "b", "c");
Iterable<String> abcc = newArrayList("a", "b", "cc");
// assertion will pass
assertThat(abc).allMatch(s -> s.length() == 1);
// assertion will fail
assertThat(abcc).allMatch(s -> s.length() == 1);
Note that you can achieve the same result with are(Condition)
or have(Condition)
.allMatch
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
predicate
- the given Predicate
.this
object.public SELF allMatch(Predicate<? super ELEMENT> predicate, String predicateDescription)
Predicate
. The predicate description is used
to get an informative error message.
Example :
Iterable<String> abc = newArrayList("a", "b", "c");
Iterable<String> abcc = newArrayList("a", "b", "cc");
// assertion will pass
assertThat(abc).allMatch(s -> s.length() == 1, "length of 1");
// assertion will fail
assertThat(abcc).allMatch(s -> s.length() == 1, "length of 1");
The message of the failed assertion would be:
Expecting all elements of:
<["a", "b", "cc"]>
to match 'length of 1' predicate but this element did not:
<"cc">
allMatch
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
predicate
- the given Predicate
.predicateDescription
- a description of the Predicate
used in the error messagethis
object.public SELF allSatisfy(Consumer<? super ELEMENT> requirements)
Consumer
.
This is useful to perform a group of assertions on elements.
Example:
assertThat(myIcelanderFriends).allSatisfy(person -> {
assertThat(person.getCountry()).isEqualTo("Iceland");
assertThat(person.getPhoneCountryCode()).isEqualTo("+354");
});
If the actual iterable/array is empty, this assertion succeeds as there is no elements to check.
allSatisfy
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
requirements
- the given Consumer
.this
object.public SELF anyMatch(Predicate<? super ELEMENT> predicate)
ObjectEnumerableAssert
Predicate
.
Example :
Iterable<String> abcc = newArrayList("a", "b", "cc");
// assertion will pass
assertThat(abcc).anyMatch(s -> s.length() == 2);
// assertion will fail
assertThat(abcc).anyMatch(s -> s.length() > 2);
Note that you can achieve the same result with areAtLeastOne(Condition)
or haveAtLeastOne(Condition)
.anyMatch
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
predicate
- the given Predicate
.this
object.public <OTHER_ELEMENT> SELF zipSatisfy(Iterable<OTHER_ELEMENT> other, BiConsumer<? super ELEMENT,OTHER_ELEMENT> zipRequirements)
zipRequirements
.
This assertion assumes that actual and other have the same size but they can contain different type of elements making it handy to compare objects converted to another type, for example Domain and View/DTO objects.
Example:
List<Adress> addressModels = findGoodRestaurants();
List<AdressView> addressViews = convertToView(addressModels);
// compare addressViews and addressModels respective paired elements.
assertThat(addressViews).zipSatisfy(addressModels, (AdressView view, Adress model) -> {
assertThat(view.getZipcode() + ' ' + view.getCity()).isEqualTo(model.getCityLine());
assertThat(view.getStreet()).isEqualTo(model.getStreet().toUpperCase());
});
OTHER_ELEMENT
- the type of the other iterable elements.other
- the iterable to zip actual with.zipRequirements
- the given requirements that each pair must satisfy.this
assertion object.NullPointerException
- if the given zipRequirements BiConsumer
is null
.NullPointerException
- if the the other iterable to zip actual with is null
.AssertionError
- if the Iterable
under test is null
.AssertionError
- if actual and other don't have the same size.AssertionError
- if one or more pairs don't satisfy the given requirements.public SELF anySatisfy(Consumer<? super ELEMENT> requirements)
Consumer
.
This is useful to check that a group of assertions is verified by (at least) one element.
If the group of elements to assert is empty, the assertion will fail.
Example:
// assume that one icelander in myIcelanderFriends has a name finishing by 'son'
assertThat(myIcelanderFriends).anySatisfy(person -> {
assertThat(person.getCountry()).isEqualTo("Iceland");
assertThat(person.getSurname()).endsWith("son");
});
// assertion fails for empty group, whatever the requirements are.
assertThat(emptyGroup).anySatisfy($ -> assertThat(true).isTrue());
anySatisfy
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
requirements
- the given Consumer
.this
object.public SELF as(String description, Object... args)
AbstractAssert
You must set it before calling the assertion otherwise it is ignored as the failing assertion breaks the chained call by throwing an AssertionError.
The description follows String.format(String, Object...)
syntax.
Example :
try {
// set a bad age to Mr Frodo which is really 33 years old.
frodo.setAge(50);
// specify a test description (call as() before the assertion !), it supports String format syntax.
assertThat(frodo.getAge()).as("check %s's age", frodo.getName()).isEqualTo(33);
} catch (AssertionError e) {
assertThat(e).hasMessage("[check Frodo's age] expected:<[33]> but was:<[50]>");
}
as
in interface Descriptable<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>>
as
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
description
- the new description to set.args
- optional parameter if description is a format String.this
object.Descriptable.describedAs(String, Object...)
public SELF as(Description description)
AbstractAssert
You must set it before calling the assertion otherwise it is ignored as the failing assertion breaks the chained call by throwing an AssertionError.
This overloaded version of "describedAs" offers more flexibility than the one taking a String
by allowing
users to pass their own implementation of a description. For example, a description that creates its value lazily,
only when an assertion failure occurs.
as
in interface Descriptable<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>>
as
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
description
- the new description to set.this
object.Descriptable.describedAs(Description)
public SELF describedAs(Description description)
AbstractAssert
You must set it before calling the assertion otherwise it is ignored as the failing assertion breaks the chained call by throwing an AssertionError.
This overloaded version of "describedAs" offers more flexibility than the one taking a String
by allowing
users to pass their own implementation of a description. For example, a description that creates its value lazily,
only when an assertion failure occurs.
describedAs
in interface Descriptable<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>>
describedAs
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
description
- the new description to set.this
object.public SELF describedAs(String description, Object... args)
AbstractAssert
You must set it before calling the assertion otherwise it is ignored as the failing assertion breaks the chained call by throwing an AssertionError.
Alias for
since "as" is a keyword in Groovy.Descriptable.as(String, Object...)
describedAs
in interface Descriptable<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>>
describedAs
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
description
- the new description to set.args
- optional parameter if description is a format String.this
object.public SELF doesNotHave(Condition<? super ACTUAL> condition)
AbstractAssert
ExtensionPoints.isNot(Condition)
.doesNotHave
in interface ExtensionPoints<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
doesNotHave
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
condition
- the given condition.this ExtensionPoints
object.ExtensionPoints.isNot(Condition)
public SELF doesNotHaveSameClassAs(Object other)
AbstractAssert
Example:
// assertions will pass
assertThat(1).doesNotHaveSameClassAs("abc");
assertThat(new ArrayList<String>()).doesNotHaveSameClassAs(new LinkedList<String>());
// assertions will fail
assertThat(1).doesNotHaveSameClassAs(2);
assertThat("abc").doesNotHaveSameClassAs("123");
assertThat(new ArrayList<String>()).doesNotHaveSameClassAs(new ArrayList<Integer>());
doesNotHaveSameClassAs
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
doesNotHaveSameClassAs
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
other
- the object to check type against.public SELF has(Condition<? super ACTUAL> condition)
AbstractAssert
ExtensionPoints.is(Condition)
.has
in interface ExtensionPoints<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
has
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
condition
- the given condition.this ExtensionPoints
object.ExtensionPoints.is(Condition)
public SELF hasSameClassAs(Object other)
AbstractAssert
Example:
// assertions will pass
assertThat(1).hasSameClassAs(2);
assertThat("abc").hasSameClassAs("123");
assertThat(new ArrayList<String>()).hasSameClassAs(new ArrayList<Integer>());
// assertions will fail
assertThat(1).hasSameClassAs("abc");
assertThat(new ArrayList<String>()).hasSameClassAs(new LinkedList<String>());
hasSameClassAs
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
hasSameClassAs
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
other
- the object to check type against.public SELF hasToString(String expectedToString)
AbstractAssert
actual.toString()
is equal to the given String
.
Example :
CartoonCaracter homer = new CartoonCaracter("Homer");
// Instead of writing ...
assertThat(homer.toString()).isEqualTo("Homer");
// ... you can simply write:
assertThat(homer).hasToString("Homer");
hasToString
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
hasToString
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
expectedToString
- the expected String description of actual.public SELF is(Condition<? super ACTUAL> condition)
AbstractAssert
ExtensionPoints.has(Condition)
.is
in interface ExtensionPoints<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
is
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
condition
- the given condition.this ExtensionPoints
object.ExtensionPoints.is(Condition)
public SELF isEqualTo(Object expected)
AbstractAssert
Example:
// assertions will pass
assertThat("abc").isEqualTo("abc");
assertThat(new HashMap<String, Integer>()).isEqualTo(new HashMap<String, Integer>());
// assertions will fail
assertThat("abc").isEqualTo("123");
assertThat(new ArrayList<String>()).isEqualTo(1);
isEqualTo
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isEqualTo
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
expected
- the given value to compare the actual value to.this
assertion object.public SELF isExactlyInstanceOf(Class<?> type)
AbstractAssert
Example:
// assertions will pass
assertThat("abc").isExactlyInstanceOf(String.class);
assertThat(new ArrayList<String>()).isExactlyInstanceOf(ArrayList.class);
assertThat(new HashMap<String, Integer>()).isExactlyInstanceOf(HashMap.class);
// assertions will fail
assertThat(1).isExactlyInstanceOf(String.class);
assertThat(new ArrayList<String>()).isExactlyInstanceOf(List.class);
assertThat(new HashMap<String, Integer>()).isExactlyInstanceOf(Map.class);
isExactlyInstanceOf
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isExactlyInstanceOf
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
type
- the type to check the actual value against.public SELF isIn(Iterable<?> values)
AbstractAssert
Example:
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertion will pass:
assertThat(nenya).isIn(elvesRings);
// assertion will fail:
assertThat(oneRing).isIn(elvesRings);
isIn
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isIn
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
values
- the given iterable to search the actual value in.this
assertion object.public SELF isIn(Object... values)
AbstractAssert
Example:
Ring[] elvesRings = new Ring[] { vilya, nenya, narya };
// assertion will pass:
assertThat(nenya).isIn(elvesRings);
// assertion will fail:
assertThat(oneRing).isIn(elvesRings);
isIn
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isIn
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
values
- the given array to search the actual value in.this
assertion object.public SELF isInstanceOf(Class<?> type)
AbstractAssert
Example:
// assertions will pass
assertThat("abc").isInstanceOf(String.class);
assertThat(new HashMap<String, Integer>()).isInstanceOf(HashMap.class);
assertThat(new HashMap<String, Integer>()).isInstanceOf(Map.class);
// assertions will fail
assertThat(1).isInstanceOf(String.class);
assertThat(new ArrayList<String>()).isInstanceOf(LinkedList.class);
isInstanceOf
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isInstanceOf
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
type
- the type to check the actual value against.public SELF isInstanceOfAny(Class<?>... types)
AbstractAssert
Example:
// assertions will pass
assertThat("abc").isInstanceOfAny(String.class, Integer.class);
assertThat(new ArrayList<String>()).isInstanceOfAny(LinkedList.class, ArrayList.class);
assertThat(new HashMap<String, Integer>()).isInstanceOfAny(TreeMap.class, Map.class);
// assertions will fail
assertThat(1).isInstanceOfAny(Double.class, Float.class);
assertThat(new ArrayList<String>()).isInstanceOfAny(LinkedList.class, Vector.class);
isInstanceOfAny
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isInstanceOfAny
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
types
- the types to check the actual value against.public SELF isNot(Condition<? super ACTUAL> condition)
AbstractAssert
ExtensionPoints.doesNotHave(Condition)
.isNot
in interface ExtensionPoints<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isNot
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
condition
- the given condition.this ExtensionPoints
object.ExtensionPoints.isNot(Condition)
public SELF isNotEqualTo(Object other)
AbstractAssert
Example:
// assertions will pass
assertThat("abc").isNotEqualTo("123");
assertThat(new ArrayList<String>()).isNotEqualTo(1);
// assertions will fail
assertThat("abc").isNotEqualTo("abc");
assertThat(new HashMap<String, Integer>()).isNotEqualTo(new HashMap<String, Integer>());
isNotEqualTo
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isNotEqualTo
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
other
- the given value to compare the actual value to.this
assertion object.public SELF isNotExactlyInstanceOf(Class<?> type)
AbstractAssert
Example:
// assertions will pass
assertThat(1).isNotExactlyInstanceOf(String.class);
assertThat(new ArrayList<String>()).isNotExactlyInstanceOf(List.class);
assertThat(new HashMap<String, Integer>()).isNotExactlyInstanceOf(Map.class);
// assertions will fail
assertThat("abc").isNotExactlyInstanceOf(String.class);
assertThat(new ArrayList<String>()).isNotExactlyInstanceOf(ArrayList.class);
assertThat(new HashMap<String, Integer>()).isNotExactlyInstanceOf(HashMap.class);
isNotExactlyInstanceOf
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isNotExactlyInstanceOf
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
type
- the type to check the actual value against.public SELF isNotIn(Iterable<?> values)
AbstractAssert
Example:
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertion will pass:
assertThat(oneRing).isNotIn(elvesRings);
// assertion will fail:
assertThat(nenya).isNotIn(elvesRings);
isNotIn
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isNotIn
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
values
- the given iterable to search the actual value in.this
assertion object.public SELF isNotIn(Object... values)
AbstractAssert
Example:
Ring[] elvesRings = new Ring[] { vilya, nenya, narya };
// assertion will pass:
assertThat(oneRing).isNotIn(elvesRings);
// assertion will fail:
assertThat(nenya).isNotIn(elvesRings);
isNotIn
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isNotIn
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
values
- the given array to search the actual value in.this
assertion object.public SELF isNotInstanceOf(Class<?> type)
AbstractAssert
Example:
// assertions will pass
assertThat(1).isNotInstanceOf(Double.class);
assertThat(new ArrayList<String>()).isNotInstanceOf(LinkedList.class);
// assertions will fail
assertThat("abc").isNotInstanceOf(String.class);
assertThat(new HashMap<String, Integer>()).isNotInstanceOf(HashMap.class);
assertThat(new HashMap<String, Integer>()).isNotInstanceOf(Map.class);
isNotInstanceOf
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isNotInstanceOf
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
type
- the type to check the actual value against.public SELF isNotInstanceOfAny(Class<?>... types)
AbstractAssert
Example:
// assertions will pass
assertThat(1).isNotInstanceOfAny(Double.class, Float.class);
assertThat(new ArrayList<String>()).isNotInstanceOfAny(LinkedList.class, Vector.class);
// assertions will fail
assertThat(1).isNotInstanceOfAny(Double.class, Integer.class);
assertThat(new ArrayList<String>()).isNotInstanceOfAny(LinkedList.class, ArrayList.class);
assertThat(new HashMap<String, Integer>()).isNotInstanceOfAny(TreeMap.class, Map.class);
isNotInstanceOfAny
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isNotInstanceOfAny
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
types
- the types to check the actual value against.public SELF isNotOfAnyClassIn(Class<?>... types)
AbstractAssert
Example:
// assertions will pass
assertThat(new HashMap<String, Integer>()).isNotOfAnyClassIn(Map.class, TreeMap.class);
assertThat(new ArrayList<String>()).isNotOfAnyClassIn(LinkedList.class, List.class);
// assertions will fail
assertThat(new HashMap<String, Integer>()).isNotOfAnyClassIn(HashMap.class, TreeMap.class);
assertThat(new ArrayList<String>()).isNotOfAnyClassIn(ArrayList.class, LinkedList.class);
isNotOfAnyClassIn
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isNotOfAnyClassIn
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
types
- the types to check the actual value against.public SELF isNotNull()
AbstractAssert
null
.
Example:
// assertion will pass
assertThat("abc").isNotNull();
assertThat(new HashMap<String, Integer>()).isNotNull();
// assertion will fail
String value = null;
assertThat(value).isNotNull();
isNotNull
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isNotNull
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
this
assertion object.public SELF isNotSameAs(Object other)
AbstractAssert
Example:
// Name is a class with first and last fields, two Names are equals if both first and last are equals.
Name tyrion = new Name("Tyrion", "Lannister");
Name alias = tyrion;
Name clone = new Name("Tyrion", "Lannister");
// assertions succeed:
assertThat(clone).isNotSameAs(tyrion)
.isEqualTo(tyrion);
// assertion fails:
assertThat(alias).isNotSameAs(tyrion);
isNotSameAs
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isNotSameAs
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
other
- the given value to compare the actual value to.this
assertion object.public SELF isOfAnyClassIn(Class<?>... types)
AbstractAssert
Example:
// assertions will pass
assertThat(new HashMap<String, Integer>()).isOfAnyClassIn(HashMap.class, TreeMap.class);
assertThat(new ArrayList<String>()).isOfAnyClassIn(ArrayList.class, LinkedList.class);
// assertions will fail
assertThat(new HashMap<String, Integer>()).isOfAnyClassIn(TreeMap.class, Map.class);
assertThat(new ArrayList<String>()).isOfAnyClassIn(LinkedList.class, List.class);
isOfAnyClassIn
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isOfAnyClassIn
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
types
- the types to check the actual value against.public SELF isSameAs(Object expected)
AbstractAssert
Example:
// Name is a class with first and last fields, two Names are equals if both first and last are equals.
Name tyrion = new Name("Tyrion", "Lannister");
Name alias = tyrion;
Name clone = new Name("Tyrion", "Lannister");
// assertions succeed:
assertThat(tyrion).isSameAs(alias)
.isEqualTo(clone);
// assertion fails:
assertThat(tyrion).isSameAs(clone);
isSameAs
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
isSameAs
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
expected
- the given value to compare the actual value to.this
assertion object.public SELF noneMatch(Predicate<? super ELEMENT> predicate)
ObjectEnumerableAssert
Predicate
.
Example :
Iterable<String> abcc = newArrayList("a", "b", "cc");
// assertion will pass
assertThat(abcc).noneMatch(s -> s.isEmpty());
// assertion will fail
assertThat(abcc).noneMatch(s -> s.length() == 2);
Note that you can achieve the same result with areNot(Condition)
or doNotHave(Condition)
.noneMatch
in interface ObjectEnumerableAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ELEMENT>
predicate
- the given Predicate
.this
object.public SELF overridingErrorMessage(String newErrorMessage, Object... args)
AbstractAssert
The new error message is built using String.format(String, Object...)
if you provide args parameter (if you
don't, the error message is taken as it is).
Example :
assertThat(player.isRookie()).overridingErrorMessage("Expecting Player <%s> to be a rookie but was not.", player)
.isTrue();
overridingErrorMessage
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
newErrorMessage
- the error message that will replace the default one provided by Assertj.args
- the args used to fill error message as in String.format(String, Object...)
.public SELF usingDefaultComparator()
AbstractAssert
This method should be used to disable a custom comparison strategy set by calling
Assert.usingComparator(Comparator)
.
usingDefaultComparator
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
usingDefaultComparator
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
this
assertion object.public SELF usingComparator(Comparator<? super ACTUAL> customComparator)
AbstractAssert
Custom comparator is bound to assertion instance, meaning that if a new assertion is created, it will use default comparison strategy. Examples :
// frodo and sam are instances of Character with Hobbit race (obviously :).
// raceComparator implements Comparator<Character>
assertThat(frodo).usingComparator(raceComparator).isEqualTo(sam);
usingComparator
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
usingComparator
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
customComparator
- the comparator to use for incoming assertion checks.this
assertion object.public SELF withFailMessage(String newErrorMessage, Object... args)
AbstractAssert
AbstractAssert.overridingErrorMessage(java.lang.String, java.lang.Object...)
withFailMessage
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
newErrorMessage
- the error message that will replace the default one provided by Assertj.args
- the args used to fill error message as in String.format(String, Object...)
.public SELF withThreadDumpOnError()
AbstractAssert
System.err
.
Example :
assertThat("Messi").withThreadDumpOnError().isEqualTo("Ronaldo");
will print a thread dump, something similar to this:
"JDWP Command Reader"
java.lang.Thread.State: RUNNABLE
"JDWP Event Helper Thread"
java.lang.Thread.State: RUNNABLE
"JDWP Transport Listener: dt_socket"
java.lang.Thread.State: RUNNABLE
"Signal Dispatcher"
java.lang.Thread.State: RUNNABLE
"Finalizer"
java.lang.Thread.State: WAITING
at java.lang.Object.wait(Native Method)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:189)
"Reference Handler"
java.lang.Thread.State: WAITING
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:503)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
"main"
java.lang.Thread.State: RUNNABLE
at sun.management.ThreadImpl.dumpThreads0(Native Method)
at sun.management.ThreadImpl.dumpAllThreads(ThreadImpl.java:446)
at org.assertj.core.internal.Failures.threadDumpDescription(Failures.java:193)
at org.assertj.core.internal.Failures.printThreadDumpIfNeeded(Failures.java:141)
at org.assertj.core.internal.Failures.failure(Failures.java:91)
at org.assertj.core.internal.Objects.assertEqual(Objects.java:314)
at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:198)
at org.assertj.examples.ThreadDumpOnErrorExample.main(ThreadDumpOnErrorExample.java:28)
withThreadDumpOnError
in interface Assert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
withThreadDumpOnError
in class AbstractAssert<SELF extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Iterable<? extends ELEMENT>>
public AbstractIterableSizeAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT> size()
Assert
object that allows performing assertions on the size of the Iterable
under test.
Once this method is called, the object under test is no longer the Iterable
but its size,
to perform assertions on the Iterable
, call AbstractIterableSizeAssert.returnToIterable()
.
Example:
Iterable<Ring> elvesRings = newArrayList(vilya, nenya, narya);
// assertion will pass:
assertThat(elvesRings).size().isGreaterThan(1)
.isLessThanOrEqualTo(3)
.returnToIterable().contains(narya)
.doesNotContain(oneRing);
// assertion will fail:
assertThat(elvesRings).size().isGreaterThan(3);
Iterable
's size.NullPointerException
- if the given Iterable
is null
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