| package org.hamcrest.number; |
| |
| import org.hamcrest.Matcher; |
| import org.junit.Test; |
| |
| import static org.hamcrest.AbstractMatcherTest.*; |
| import static org.hamcrest.number.IsNaN.notANumber; |
| |
| public final class IsNanTest { |
| |
| @Test public void |
| copesWithNullsAndUnknownTypes() { |
| Matcher<Double> matcher = notANumber(); |
| |
| assertNullSafe(matcher); |
| assertUnknownTypeSafe(matcher); |
| } |
| |
| @Test public void |
| matchesNaN() { |
| assertMatches(notANumber(), Double.NaN); |
| } |
| |
| @Test public void |
| doesNotMatchDoubleValue() { |
| assertDoesNotMatch(notANumber(), 1.25); |
| } |
| |
| @Test public void |
| doesNotMatchInfinity() { |
| assertDoesNotMatch(notANumber(), Double.POSITIVE_INFINITY); |
| } |
| |
| @Test public void |
| describesItself() { |
| assertDescription("a double value of NaN", notANumber()); |
| } |
| |
| @Test public void |
| describesAMismatch() { |
| assertMismatchDescription("was <1.25>", notANumber(), 1.25); |
| } |
| } |