org.hamcrest.core

Class IsInstanceOf

java.lang.Object

org.hamcrest.BaseMatcher<java.lang.Object>

org.hamcrest.core.IsInstanceOf

All Implemented Interfaces:

Matcher<java.lang.Object>, SelfDescribing

public class IsInstanceOf
extends BaseMatcher<java.lang.Object>

Tests whether the value is an instance of a class.

Constructor Summary

Constructors

Constructor and Description
IsInstanceOf(java.lang.Class<?> theClass) Creates a new instance of IsInstanceOf

Method Summary

Methods

Modifier and Type	Method and Description
void	describeTo(Description description) Generates a description of the object.
static Matcher<java.lang.Object>	instanceOf(java.lang.Class<?> type) Is the value an instance of a particular type?
boolean	matches(java.lang.Object item) Evaluates the matcher for argument 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

IsInstanceOf

public IsInstanceOf(java.lang.Class<?> theClass)

Creates a new instance of IsInstanceOf

Parameters:

theClass - The predicate evaluates to true for instances of this class or one of its subclasses.

Method Detail

matches

public boolean matches(java.lang.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.

instanceOf

public static Matcher<java.lang.Object> instanceOf(java.lang.Class<?> type)

Is the value an instance of a particular type?