Package org.hamcrest.core
Class IsInstanceOf
- All Implemented Interfaces:
Matcher<Object>
,SelfDescribing
Tests whether the value is an instance of a class.
Classes of basic types will be converted to the relevant "Object" classes
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Field Summary
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic <T> Matcher<T>
Creates a matcher that matches when the examined object is an instance of the specifiedtype
, as determined by calling theClass.isInstance(Object)
method on that type, passing the the examined object.void
describeTo
(Description description) Generates a description of the object.static <T> Matcher<T>
instanceOf
(Class<?> type) Creates a matcher that matches when the examined object is an instance of the specifiedtype
, as determined by calling theClass.isInstance(Object)
method on that type, passing the the examined object.private static Class<?>
matchableClass
(Class<?> expectedClass) protected boolean
matches
(Object item, Description mismatch) Methods inherited from class org.hamcrest.DiagnosingMatcher
describeMismatch, matches
Methods inherited from class org.hamcrest.BaseMatcher
_dont_implement_Matcher___instead_extend_BaseMatcher_, isNotNull, toString
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Field Details
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expectedClass
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matchableClass
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Constructor Details
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IsInstanceOf
Creates a new instance of IsInstanceOf- Parameters:
expectedClass
- The predicate evaluates to true for instances of this class or one of its subclasses.
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Method Details
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matchableClass
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matches
- Specified by:
matches
in classDiagnosingMatcher<Object>
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describeTo
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.
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instanceOf
Creates a matcher that matches when the examined object is an instance of the specifiedtype
, as determined by calling theClass.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));
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any
Creates a matcher that matches when the examined object is an instance of the specifiedtype
, as determined by calling theClass.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
For example:with(any(Thing.class))
assertThat(new Canoe(), instanceOf(Canoe.class));
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