Class TestIntegerSetGenerator

java.lang.Object

com.google.common.collect.testing.TestIntegerSetGenerator

All Implemented Interfaces:

TestCollectionGenerator<Integer>, TestContainerGenerator<Collection<Integer>,Integer>, TestSetGenerator<Integer>

Direct Known Subclasses:

TestIntegerSortedSetGenerator

@GwtCompatible
@NullMarked
public abstract class TestIntegerSetGenerator
extends Object
implements TestSetGenerator<Integer>

Create integer sets for collection tests.

Author:

Gregory Kick

Constructor Summary

Constructors

Constructor	Description
TestIntegerSetGenerator()

Method Summary

Modifier and Type	Method	Description
protected abstract Set<Integer>	create(Integer[] elements)
Set<Integer>	create(Object... elements)	Creates a new container containing the given elements.
Integer[]	createArray(int length)	Helper method to create an array of the appropriate type used by this generator.
List<Integer>	order(List<Integer> insertionOrder)	Returns the iteration ordering of elements, given the order in which they were added to the container.
SampleElements<Integer>	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

TestIntegerSetGenerator

public TestIntegerSetGenerator()

Method Details

samples

public SampleElements<Integer> samples()

Description copied from interface: TestContainerGenerator

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

Specified by:

samples in interface TestContainerGenerator<Collection<Integer>,Integer>

create

public Set<Integer> 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<Collection<Integer>,Integer>

Specified by:

create in interface TestSetGenerator<Integer>

create

protected abstract Set<Integer> create(Integer[] elements)

createArray

public Integer[] 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<Collection<Integer>,Integer>

order

public List<Integer> order(List<Integer> insertionOrder)

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.

By default, returns the supplied elements in their given order; however, generators for containers with a known order other than insertion order must override this method.

Note: This default implementation is overkill (but valid) for an unordered container. An equally valid implementation for an unordered container is to throw an exception. The chosen implementation, however, has the advantage of working for insertion-ordered containers, as well.

Specified by:

order in interface TestContainerGenerator<Collection<Integer>,Integer>