Interface RemoveIfContract<E,C extends Collection<E>>

Type Parameters:

E - The element type being tested.

C - The collection type being tested.

All Superinterfaces:

CollectionContractConfig, CollectionContractSupport<E,C>, CollectionProviderSupport<E,C>, ContractSupport<C>, ElementProviderSupport<E>, ProviderSupport<C>, SupportedMethods

All Known Subinterfaces:

CollectionContract<E,C>, ListContract<E,L>, SequencedCollectionContract<E,C>

public interface RemoveIfContract<E,C extends Collection<E>>
extends CollectionContractSupport<E,C>

This interface tests if a collection class has implemented the removeIf method correctly.

Since:

1.0.0

Author:

evanbergstrom

See Also:

• Collection.removeIf(java.util.function.Predicate<? super E>)

Field Summary

Fields inherited from interface org.soliscode.test.contract.support.CollectionContractSupport

DEFAULT_SIZE

Method Summary

Modifier and Type	Method	Description
default void	testRemoveIfOnContainerWithElements()	Tests that the removeIf method works on a container with elements.
default void	testRemoveIfOnEmptyContainer()	Tests that the removeIf method works on an empty container.
default void	testRemoveIfThrowsOnANullFilter()	Tests that the removeIf method throws an exception when passed a null filter.

Methods inherited from interface org.soliscode.test.contract.CollectionContractConfig

permitDuplicates, permitIncompatibleTypes, permitNulls

Methods inherited from interface org.soliscode.test.contract.support.CollectionProviderSupport

provider

Methods inherited from interface org.soliscode.test.contract.support.ElementProviderSupport

elementProvider

Methods inherited from interface org.soliscode.test.SupportedMethods

supportsMethod

Method Details

testRemoveIfOnEmptyContainer

@Test
@DisplayName("The removeIf method can be called on an empty container")
default void testRemoveIfOnEmptyContainer()

Tests that the removeIf method works on an empty container.

Throws:

org.opentest4j.AssertionFailedError - if the test fails.

testRemoveIfOnContainerWithElements

@Test
@DisplayName("The removeIf method works on a container with elements")
default void testRemoveIfOnContainerWithElements()

Tests that the removeIf method works on a container with elements.

Throws:

org.opentest4j.AssertionFailedError - if the test fails.

testRemoveIfThrowsOnANullFilter

@Test
@DisplayName("The removeIf method throws on a null filter")
default void testRemoveIfThrowsOnANullFilter()

Tests that the removeIf method throws an exception when passed a null filter.

Throws:

org.opentest4j.AssertionFailedError - if the test fails.

Implementation Note:

This test checks that the removeIf function throws the correct exception if it is called on a null value. IntelliJ will detect a problem when it is called with a null argument since the method declaration has a NotNull annotation. Since this is what we are trying to test, the inspection is suppressed here.