@Test
public void testEquals() throws Exception {
BinaryPredicate<Object, Object> p = new IsNotEqual<Object, Object>();
assertEquals(p, p);
assertObjectsAreEqual(p, new IsNotEqual<Object, Object>());
assertObjectsAreEqual(p, IsNotEqual.instance());
assertObjectsAreNotEqual(p, Constant.truePredicate());
}
@Test
public void testTest() throws Exception {
IsNotEqual<Object, Object> p = new IsNotEqual<Object, Object>();
assertTrue("For symmetry, two nulls should be equal", !p.test(null, null));
assertTrue(!p.test("foo", "foo"));
assertTrue(p.test(null, "foo"));
assertTrue(p.test("foo", null));
assertTrue(!p.test(new Integer(3), new Integer(3)));
assertTrue(p.test(null, new Integer(3)));
assertTrue(p.test(new Integer(3), null));
assertTrue(p.test(new Integer(3), new Integer(4)));
assertTrue(p.test(new Integer(4), new Integer(3)));
assertTrue(p.test("3", new Integer(3)));
assertTrue(p.test(new Integer(3), "3"));
}
@Test
public void testToPredicate() {
Predicate<Integer> isNotEqual = IsNotEqual.to(new Integer(1));
assertTrue(isNotEqual.test(new Integer(2)));
assertFalse(isNotEqual.test(new Integer(1)));
}
@Test
public void testConstant() throws Exception {
assertEquals(IsNotEqual.instance(), IsNotEqual.instance());
}
