org.hamcrest.number
Class IsNaN

java.lang.Object
  org.hamcrest.BaseMatcher<T>
      org.hamcrest.TypeSafeMatcher<Double>
          org.hamcrest.number.IsNaN

All Implemented Interfaces:

Matcher<Double>, SelfDescribing

public final class IsNaN
extends TypeSafeMatcher<Double>

Is the value a number actually not a number (NaN)?

Method Summary

void	describeMismatchSafely(Double item, Description mismatchDescription)
void	describeTo(Description description)
boolean	matchesSafely(Double item)
static Matcher<Double>	notANumber() Creates a matcher of Doubles that matches when an examined double is not a number.

Methods inherited from class org.hamcrest.TypeSafeMatcher

describeMismatch, matches

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

Method Detail

matchesSafely

public boolean matchesSafely(Double item)

Specified by:

matchesSafely in class TypeSafeMatcher<Double>

describeMismatchSafely

public void describeMismatchSafely(Double item,
                                   Description mismatchDescription)

Overrides:

describeMismatchSafely in class TypeSafeMatcher<Double>

describeTo

public void describeTo(Description description)

notANumber

public static Matcher<Double> notANumber()

Creates a matcher of Doubles that matches when an examined double is not a number.

For example:

assertThat(Double.NaN, is(notANumber()))