hello", StringUtils.stripHtmlTags("
hello")); assertEquals("kdHydro < 12.53", StringUtils.stripHtmlTags("kdHydro < 12.53")); } @Test(groups = { "Functional" }) public void testIsHexString() { assertFalse(StringUtils.isHexString("")); assertTrue(StringUtils.isHexString("0123456789abcdefABCDEF")); assertFalse(StringUtils.isHexString("g")); try { StringUtils.isHexString(null); fail("expected exception"); } catch (NullPointerException e) { // expected } } }