floatasserttest.java

JUnit, java testing tool

package junit.tests.framework;

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

public class FloatAssertTest extends TestCase {

	/**
		 * Test for the special Double.NaN value.
		 */
	public void testAssertEqualsNaNFails() {
		try {
			assertEquals(1.234f, Float.NaN, 0.0);
			fail();
		} catch (AssertionFailedError e) {
		}
	}

	public void testAssertNaNEqualsFails() {
		try {
			assertEquals(Float.NaN, 1.234f, 0.0);
			fail();
		} catch (AssertionFailedError e) {
		}
	}

	public void testAssertNaNEqualsNaN() {
		assertEquals(Float.NaN, Float.NaN, 0.0);
	}

	public void testAssertPosInfinityNotEqualsNegInfinity() {
		try {
			assertEquals(Float.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY, 0.0);
			fail();
		} catch (AssertionFailedError e) {
		}
	}

	public void testAssertPosInfinityNotEquals() {
		try {
			assertEquals(Float.POSITIVE_INFINITY, 1.23f, 0.0);
			fail();
		} catch (AssertionFailedError e) {
		}
	}

	public void testAssertPosInfinityEqualsInfinity() {
		assertEquals(Float.POSITIVE_INFINITY, Float.POSITIVE_INFINITY, 0.0);
	}

	public void testAssertNegInfinityEqualsInfinity() {
		assertEquals(Float.NEGATIVE_INFINITY, Float.NEGATIVE_INFINITY, 0.0);
	}
	
	public void testAllInfinities() {
		try {
			assertEquals(Float.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY);
			fail();
		} catch (AssertionFailedError e) {
		}
	}

}