org.whaka.asserts.matcher

Class FunctionalMatcher<T>

java.lang.Object

org.hamcrest.BaseMatcher<T>

org.whaka.asserts.matcher.FunctionalMatcher<T>

All Implemented Interfaces:

org.hamcrest.Matcher<T>, org.hamcrest.SelfDescribing

public class FunctionalMatcher<T>
extends org.hamcrest.BaseMatcher<T>

Class allows to create instances of the Matcher using functional interfaces to delegate actual functionality.

Three components are required to create a matcher:

• Type of matched items
• Predicate of an item, to perform actual matching
• Description, providing some information about a matcher

See Also:

FunctionalMatcher(Class, Predicate, Consumer), FunctionalMatcher(Class, Predicate, String)

Constructor Summary

Constructors

Constructor and Description
FunctionalMatcher(java.lang.Class<? super T> type, java.util.function.Predicate<T> predicate, java.util.function.Consumer<org.hamcrest.Description> describer) To create an instance of the functional matcher you have to specify a Class of items, for Hamcrest's matchers don't perform any basic type assertion; a Predicate of the same type, that will be called for each item that's either null, or an instance of the specified class; and a Consumer for the Description type, that will be called each time matcher have to describe itself.
FunctionalMatcher(java.lang.Class<? super T> type, java.util.function.Predicate<T> predicate, java.lang.String description) Equal to the FunctionalMatcher(Class, Predicate, Consumer) but with an automatically created consumer that calls Description.appendText(String) with the specified string.

Method Summary

Modifier and Type	Method and Description
void	describeTo(org.hamcrest.Description description)
java.util.function.Consumer<org.hamcrest.Description>	getDescriber()
java.util.function.Predicate<T>	getPredicate()
java.lang.Class<? super T>	getType()
boolean	matches(java.lang.Object item)

Methods inherited from class org.hamcrest.BaseMatcher

_dont_implement_Matcher___instead_extend_BaseMatcher_, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionalMatcher

public FunctionalMatcher(java.lang.Class<? super T> type,
                         java.util.function.Predicate<T> predicate,
                         java.lang.String description)

Equal to the FunctionalMatcher(Class, Predicate, Consumer) but with an automatically created consumer that calls Description.appendText(String) with the specified string.

FunctionalMatcher

public FunctionalMatcher(java.lang.Class<? super T> type,
                         java.util.function.Predicate<T> predicate,
                         java.util.function.Consumer<org.hamcrest.Description> describer)

To create an instance of the functional matcher you have to specify a Class of items, for Hamcrest's matchers don't perform any basic type assertion; a Predicate of the same type, that will be called for each item that's either null, or an instance of the specified class; and a Consumer for the Description type, that will be called each time matcher have to describe itself.

See Also:

FunctionalMatcher(Class, Predicate, String)

Method Detail

getType

public java.lang.Class<? super T> getType()

getPredicate

public java.util.function.Predicate<T> getPredicate()

getDescriber

public java.util.function.Consumer<org.hamcrest.Description> getDescriber()

matches

public boolean matches(java.lang.Object item)

describeTo

public void describeTo(org.hamcrest.Description description)