assertTrue("Expected f1 not to equal f2", !f1.equals(f2));
assertEquals(f1, f2);
    public void testEquals() throws Exception {        assertEquals(f1, f1);        assertTrue("Expected f1 not to equal f2", !f1.equals(f2));        assertTrue("Expected f1 not to equal f3", !f1.equals(f3));        assertEquals(f1, f4);        assertTrue("Expected f1 not to equal f5", !f1.equals(f5));        assertTrue("Expected f1 not to equal null", !f1.equals(null));        assertEquals(f3, f6);        assertTrue("Expected f1 not to equal f7", !f1.equals(f7));        assertTrue("Expected f7 not to equal f8", !f7.equals(f8));    }