org.hamcrest.core
Class IsInstanceOf

java.lang.Object
  org.hamcrest.BaseMatcher<T>
      org.hamcrest.DiagnosingMatcher<Object>
          org.hamcrest.core.IsInstanceOf

All Implemented Interfaces:

Matcher< Object>, SelfDescribing

public class IsInstanceOf
   

    extends 
    DiagnosingMatcher<
    Object>
   

Tests whether the value is an instance of a class. Classes of basic types will be converted to the relevant "Object" classes

         

IsInstanceOf

public IsInstanceOf(Class<?> expectedClass)

Creates a new instance of IsInstanceOf

Parameters:

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

matches

protected boolean matches(Object item,
                          Description mismatch)

Specified by:

matches in class DiagnosingMatcher<Object>

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 <T> Matcher<T> instanceOf(Class<?> type)

Creates a matcher that matches when the examined object is an instance of the specified type, as determined by calling the Class.isInstance(Object) method on that type, passing the the examined object.

The created matcher assumes no relationship between specified type and the examined object.

For example:

assertThat(new Canoe(), instanceOf(Paddlable.class));

any

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

Creates a matcher that matches when the examined object is an instance of the specified type, as determined by calling the Class.isInstance(Object) method on that type, passing the the examined object.

The created matcher forces a relationship between specified type and the examined object, and should be used when it is necessary to make generics conform, for example in the JMock clause with(any(Thing.class))

For example:

assertThat(new Canoe(), instanceOf(Canoe.class));

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