assertTrue(c1.compareTo(c2) > 0, "expected " + "1" + " > " + "\uD835\uDFE4");
        assertTrue(c2.compareTo(c1) < 0, "expected " + "\uD835\uDFE4" + " < " + "1");
    }

    @Test
    void testDigitGreaterThanNonBmpCharacters() {
        ComparableVersion c1 = new ComparableVersion("1");
        // MATHEMATICAL SANS-SERIF DIGIT TWO
        ComparableVersion c2 = new ComparableVersion("\uD835\uDFE4");