org.hamcrest.core
Class Is<T>

java.lang.Object
  org.hamcrest.BaseMatcher<T>
      org.hamcrest.core.Is<T>

All Implemented Interfaces:

Matcher<T>, SelfDescribing

public class Is<T>
extends BaseMatcher<T>

Decorates another Matcher, retaining the behavior but allowing tests to be slightly more expressive. eg. assertThat(cheese, equalTo(smelly)) vs assertThat(cheese, is(equalTo(smelly)))

Constructor Summary

Is(Matcher<T> matcher)

Method Summary

void	describeTo(Description description) Generates a description of the object.
static <T> Matcher<T>	is(Class<T> type) This is a shortcut to the frequently used is(instanceOf(SomeClass.class)).
static <T> Matcher<T>	is(Matcher<T> matcher) Decorates another Matcher, retaining the behavior but allowing tests to be slightly more expressive.
static <T> Matcher<T>	is(T value) This is a shortcut to the frequently used is(equalTo(x)).
boolean	matches(Object arg) Evaluates the matcher for argument item.

Methods inherited from class org.hamcrest.BaseMatcher

_dont_implement_Matcher___instead_extend_BaseMatcher_

Methods inherited from class java.lang.Object

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

Constructor Detail

Is

public Is(Matcher<T> matcher)

Method Detail

matches

public boolean matches(Object arg)

Description copied from interface: Matcher

Evaluates the matcher for argument item.

Parameters:

arg - the object against which the matcher is evaluated.

Returns:

true if item matches, otherwise false.

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.

is

public static <T> Matcher<T> is(Matcher<T> matcher)

Decorates another Matcher, retaining the behavior but allowing tests to be slightly more expressive. eg. assertThat(cheese, equalTo(smelly)) vs assertThat(cheese, is(equalTo(smelly)))

is

public static <T> Matcher<T> is(T value)

This is a shortcut to the frequently used is(equalTo(x)). eg. assertThat(cheese, is(equalTo(smelly))) vs assertThat(cheese, is(smelly))

is

public static <T> Matcher<T> is(Class<T> type)

This is a shortcut to the frequently used is(instanceOf(SomeClass.class)). eg. assertThat(cheese, is(instanceOf(Cheddar.class))) vs assertThat(cheese, is(Cheddar.class))