public void test_compareTo() { DoublesPair p12 = DoublesPair.of(1d, 2d); DoublesPair p13 = DoublesPair.of(1d, 3d); DoublesPair p21 = DoublesPair.of(2d, 1d); assertTrue(p12.compareTo(p12) == 0); assertTrue(p12.compareTo(p13) < 0); assertTrue(p12.compareTo(p21) < 0); assertTrue(p13.compareTo(p12) > 0); assertTrue(p13.compareTo(p13) == 0); assertTrue(p13.compareTo(p21) < 0); assertTrue(p21.compareTo(p12) > 0); assertTrue(p21.compareTo(p13) > 0); assertTrue(p21.compareTo(p21) == 0); }