Package org.hamcrest.number
Class IsNaN
- java.lang.Object
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- org.hamcrest.BaseMatcher<T>
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- org.hamcrest.TypeSafeMatcher<java.lang.Double>
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- org.hamcrest.number.IsNaN
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- All Implemented Interfaces:
Matcher<java.lang.Double>
,SelfDescribing
public final class IsNaN extends TypeSafeMatcher<java.lang.Double>
Is the value a number actually not a number (NaN)?
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description void
describeMismatchSafely(java.lang.Double item, Description mismatchDescription)
Subclasses should override this.void
describeTo(Description description)
Generates a description of the object.boolean
matchesSafely(java.lang.Double item)
Subclasses should implement this.static Matcher<java.lang.Double>
notANumber()
Creates a matcher ofDouble
s that matches when an examined double is not a number.-
Methods inherited from class org.hamcrest.TypeSafeMatcher
describeMismatch, matches
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Methods inherited from class org.hamcrest.BaseMatcher
_dont_implement_Matcher___instead_extend_BaseMatcher_, isNotNull, toString
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Method Detail
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matchesSafely
public boolean matchesSafely(java.lang.Double item)
Description copied from class:TypeSafeMatcher
Subclasses should implement this. The item will already have been checked for the specific type and will never be null.- Specified by:
matchesSafely
in classTypeSafeMatcher<java.lang.Double>
- Parameters:
item
- the type safe item to match against.- Returns:
- boolean true/false depending if item matches matcher.
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describeMismatchSafely
public void describeMismatchSafely(java.lang.Double item, Description mismatchDescription)
Description copied from class:TypeSafeMatcher
Subclasses should override this. The item will already have been checked for the specific type and will never be null.- Overrides:
describeMismatchSafely
in classTypeSafeMatcher<java.lang.Double>
- Parameters:
item
- the type safe item to match against.mismatchDescription
- the mismatch description.
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describeTo
public void describeTo(Description description)
Description copied from interface:SelfDescribing
Generates a description of the object. The description may be part of 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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notANumber
public static Matcher<java.lang.Double> notANumber()
Creates a matcher ofDouble
s that matches when an examined double is not a number. For example:assertThat(Double.NaN, is(notANumber()))
- Returns:
- The matcher.
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