org.hamcrest.core

Class CombinableMatcher<T>

java.lang.Object

org.hamcrest.BaseMatcher<T>

org.hamcrest.core.CombinableMatcher<T>

All Implemented Interfaces:

Matcher<T>, SelfDescribing

public class CombinableMatcher<T>
extends BaseMatcher<T>

Constructor Summary

Constructors

Constructor and Description
CombinableMatcher(Matcher<? super T> matcher)

Method Summary

Methods

Modifier and Type	Method and Description
CombinableMatcher<T>	and(Matcher<? super T> other)
static <LHS> CombinableMatcher<LHS>	both(Matcher<? super LHS> matcher) This is useful for fluently combining matchers that must both pass.
void	describeTo(Description description) Generates a description of the object.
static <LHS> CombinableMatcher<LHS>	either(Matcher<? super LHS> matcher) This is useful for fluently combining matchers where either may pass, for example:
boolean	matches(Object item) Evaluates the matcher for argument item.
CombinableMatcher<T>	or(Matcher<? super T> other)

Methods inherited from class org.hamcrest.BaseMatcher

_dont_implement_Matcher___instead_extend_BaseMatcher_, describeMismatch, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CombinableMatcher

public CombinableMatcher(Matcher<? super T> matcher)

Method Detail

matches

public boolean matches(Object item)

Description copied from interface: Matcher

Evaluates the matcher for argument item.

This method matches against Object, instead of the generic type T. This is because the caller of the Matcher does not know at runtime what the type is (because of type erasure with Java generics). It is down to the implementations to check the correct type.

Parameters:

item - the object against which the matcher is evaluated.

Returns:

true if item matches, otherwise false.

See Also:

BaseMatcher

describeTo

public void describeTo(Description description)

Description copied from interface: SelfDescribing

Generates a description of the object. The description may be part of a a description of a larger object of which this is just a component, so it should be worded appropriately.

Parameters:

description - The description to be built or appended to.

and

public CombinableMatcher<T> and(Matcher<? super T> other)

or

public CombinableMatcher<T> or(Matcher<? super T> other)

both

public static <LHS> CombinableMatcher<LHS> both(Matcher<? super LHS> matcher)

This is useful for fluently combining matchers that must both pass. For example:

   assertThat(string, both(containsString("a")).and(containsString("b")));
 

either

public static <LHS> CombinableMatcher<LHS> either(Matcher<? super LHS> matcher)

This is useful for fluently combining matchers where either may pass, for example:

   assertThat(string, both(containsString("a")).and(containsString("b")));