public final void testEqualsObject() {
Rect r = new Rect(3, 4, 20, 30);
assertFalse(r.equals(null));
assertFalse(r.equals(new Object()));
assertTrue(r.equals(new Rect(3, 4, 20, 30)));
}
public final void testEqualsObject_Invalid() {
Rect r = new Rect(3, 4, 20, 30);
assertTrue(r.isValid());
Rect i1 = new Rect(3, 4, 0, 0);
assertFalse(i1.isValid());
Rect i2 = new Rect(10, 20, 0, 0);
assertFalse(i2.isValid());
// valid rects can't be equal to invalid rects
assertFalse(r.equals(i1));
assertFalse(r.equals(i2));
// invalid rects are equal to each other whatever their content is
assertEquals(i2, i1);
}