Package org.hamcrest.core
Class IsNot<T>
- java.lang.Object
- org.hamcrest.BaseMatcher<T>
- org.hamcrest.core.IsNot<T>
- All Implemented Interfaces:
Matcher<T>
,SelfDescribing
public class IsNot<T> extends BaseMatcher<T>
Calculates the logical negation of a matcher.
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description void
describeTo(Description description)
Generates a description of the object.boolean
matches(Object arg)
Evaluates the matcher for argument item.static <T> Matcher<T>
not(Matcher<T> matcher)
Creates a matcher that wraps an existing matcher, but inverts the logic by which it will match.static <T> Matcher<T>
not(T value)
A shortcut to the frequently usednot(equalTo(x))
.Methods inherited from class org.hamcrest.BaseMatcher
_dont_implement_Matcher___instead_extend_BaseMatcher_, describeMismatch, toString
Method Detail
matches
public boolean matches(Object arg)
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:
arg
- the object against which the matcher is evaluated.- Returns:
true
if item matches, otherwisefalse
.- 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.
not
public static <T> Matcher<T> not(Matcher<T> matcher)
Creates a matcher that wraps an existing matcher, but inverts the logic by which it will match. For example:assertThat(cheese, is(not(equalTo(smelly))))
- Parameters:
matcher
- the matcher whose sense should be inverted