Class DerivedCollectionGenerators.MapKeySetGenerator<K extends @Nullable Object,V extends @Nullable Object>

java.lang.Object

com.google.common.collect.testing.DerivedCollectionGenerators.MapKeySetGenerator<K,V>

All Implemented Interfaces:

DerivedGenerator, TestCollectionGenerator<K>, TestContainerGenerator<Collection<K>,K>, TestSetGenerator<K>

Direct Known Subclasses:

DerivedCollectionGenerators.MapSortedKeySetGenerator

Enclosing class:

DerivedCollectionGenerators

public static class DerivedCollectionGenerators.MapKeySetGenerator<K extends @Nullable Object,V extends @Nullable Object>
extends Object
implements TestSetGenerator<K>, DerivedGenerator

Author:

George van den Driessche

Constructor Summary

Constructors

Constructor	Description
MapKeySetGenerator(OneSizeTestContainerGenerator<Map<K,V>,Map.Entry<K,V>> mapGenerator)

Method Summary

Modifier and Type	Method	Description
Set<K>	create(Object... elements)	Creates a new container containing the given elements.
K[]	createArray(int length)	Helper method to create an array of the appropriate type used by this generator.
OneSizeTestContainerGenerator<Map<K,V>,Map.Entry<K,V>>	getInnerGenerator()
Iterable<K>	order(List<K> insertionOrder)	Returns the iteration ordering of elements, given the order in which they were added to the container.
SampleElements<K>	samples()	Returns the sample elements that this generate populates its container with.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MapKeySetGenerator

public MapKeySetGenerator(OneSizeTestContainerGenerator<Map<K,V>,Map.Entry<K,V>> mapGenerator)

Method Details

samples

public SampleElements<K> samples()

Description copied from interface: TestContainerGenerator

Returns the sample elements that this generate populates its container with.

Specified by:

samples in interface TestContainerGenerator<K extends @Nullable Object,V extends @Nullable Object>

create

public Set<K> create(Object... elements)

Description copied from interface: TestContainerGenerator

Creates a new container containing the given elements. TODO: would be nice to figure out how to use E... or E[] as a parameter type, but this doesn't seem to work because Java creates an array of the erased type.

Specified by:

create in interface TestContainerGenerator<K extends @Nullable Object,V extends @Nullable Object>

Specified by:

create in interface TestSetGenerator<K extends @Nullable Object>

createArray

public K[] createArray(int length)

Description copied from interface: TestContainerGenerator

Helper method to create an array of the appropriate type used by this generator. The returned array will contain only nulls.

Specified by:

createArray in interface TestContainerGenerator<K extends @Nullable Object,V extends @Nullable Object>

order

public Iterable<K> order(List<K> insertionOrder)

Description copied from interface: TestContainerGenerator

Returns the iteration ordering of elements, given the order in which they were added to the container. This method may return the original list unchanged, the original list modified in place, or a different list.

If the order is non-deterministic, as with HashSet, this method can return its input unmodified. Provided that the test suite is built without CollectionFeature.KNOWN_ORDER, the tests will look only at the returned contents without regard for order.

Specified by:

order in interface TestContainerGenerator<K extends @Nullable Object,V extends @Nullable Object>

getInnerGenerator

public OneSizeTestContainerGenerator<Map<K,V>,Map.Entry<K,V>> getInnerGenerator()

Specified by:

getInnerGenerator in interface DerivedGenerator