Package org.assertj.core.util
Class Throwables
- java.lang.Object
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- org.assertj.core.util.Throwables
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Field Summary
Fields Modifier and Type Field Description private static Function<Throwable,String>
ERROR_DESCRIPTION_EXTRACTOR
private static String
JAVA_LANG_REFLECT_CONSTRUCTOR
private static String
ORG_ASSERTJ
private static String
ORG_ASSERTJ_CORE_ERROR_CONSTRUCTOR_INVOKER
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Constructor Summary
Constructors Modifier Constructor Description private
Throwables()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static void
appendStackTraceInCurrentThreadToThrowable(Throwable t, String methodToStartFrom)
Appends the stack trace of the current thread to the one in the given
.Throwable
static List<String>
describeErrors(List<? extends Throwable> errors)
static Throwable
getRootCause(Throwable throwable)
Get the root cause (ie the last non null cause) from aThrowable
.static String
getStackTrace(Throwable throwable)
static void
removeAssertJRelatedElementsFromStackTrace(Throwable throwable)
Removes the AssertJ-related elements from the
stack trace that have little value for end user.Throwable
private static List<StackTraceElement>
stackTraceInCurrentThread()
private static List<StackTraceElement>
stackTraceInCurrentThread(String methodToStartFrom)
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Field Detail
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ORG_ASSERTJ_CORE_ERROR_CONSTRUCTOR_INVOKER
private static final String ORG_ASSERTJ_CORE_ERROR_CONSTRUCTOR_INVOKER
- See Also:
- Constant Field Values
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JAVA_LANG_REFLECT_CONSTRUCTOR
private static final String JAVA_LANG_REFLECT_CONSTRUCTOR
- See Also:
- Constant Field Values
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ORG_ASSERTJ
private static final String ORG_ASSERTJ
- See Also:
- Constant Field Values
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Method Detail
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appendStackTraceInCurrentThreadToThrowable
public static void appendStackTraceInCurrentThreadToThrowable(Throwable t, String methodToStartFrom)
Appends the stack trace of the current thread to the one in the given
.Throwable
- Parameters:
t
- the givenThrowable
.methodToStartFrom
- the name of the method used as the starting point of the current thread's stack trace.
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stackTraceInCurrentThread
private static List<StackTraceElement> stackTraceInCurrentThread(String methodToStartFrom)
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stackTraceInCurrentThread
private static List<StackTraceElement> stackTraceInCurrentThread()
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removeAssertJRelatedElementsFromStackTrace
public static void removeAssertJRelatedElementsFromStackTrace(Throwable throwable)
Removes the AssertJ-related elements from the
stack trace that have little value for end user. Therefore, instead of seeing this:Throwable
We get this:org.junit.ComparisonFailure: expected:<'[Ronaldo]'> but was:<'[Messi]'> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:501) at org.assertj.core.error.ConstructorInvoker.newInstance(ConstructorInvoker.java:34) at org.assertj.core.error.ShouldBeEqual.newComparisonFailure(ShouldBeEqual.java:111) at org.assertj.core.error.ShouldBeEqual.comparisonFailure(ShouldBeEqual.java:103) at org.assertj.core.error.ShouldBeEqual.newAssertionError(ShouldBeEqual.java:81) at org.assertj.core.internal.Failures.failure(Failures.java:76) at org.assertj.core.internal.Objects.assertEqual(Objects.java:116) at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:74) at examples.StackTraceFilterExample.main(StackTraceFilterExample.java:13)
org.junit.ComparisonFailure: expected:<'[Ronaldo]'> but was:<'[Messi]'> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at examples.StackTraceFilterExample.main(StackTraceFilterExample.java:20)
- Parameters:
throwable
- theThrowable
to filter stack trace.
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getRootCause
public static Throwable getRootCause(Throwable throwable)
Get the root cause (ie the last non null cause) from aThrowable
.- Parameters:
throwable
- theThrowable
to get root cause from.- Returns:
- the root cause if any, else
null
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getStackTrace
public static String getStackTrace(Throwable throwable)
Get the stack trace from aThrowable
as aString
.The result of this method vary by JDK version as this method uses
Throwable.printStackTrace(java.io.PrintWriter)
. On JDK1.3 and earlier, the cause exception will not be shown unless the specified throwable alters printStackTrace.- Parameters:
throwable
- theThrowable
to get stack trace from.- Returns:
- the stack trace as a
String
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