@Test
 public void testLowerCamelCaseInvalidWord() {
   assertFalse(CharFormatUtil.isLowerCamelCase("HelloWorld"));
   assertFalse(CharFormatUtil.isLowerCamelCase(""));
   assertFalse(CharFormatUtil.isLowerCamelCase("hello_World"));
   assertFalse(CharFormatUtil.isLowerCamelCase("1ello_world"));
   assertFalse(CharFormatUtil.isLowerCamelCase("$elloWorld"));
 }
 @Test
 public void testKPrefixedVariableNamesNotStartingWithK() {
   assertFalse(CharFormatUtil.isKPrefixed("validConstantName"));
   assertFalse(CharFormatUtil.isKPrefixed("AlsoValidConstantName"));
 }
 @Test
 public void testKPrefixedVariableNamesNotInCamelCase() {
   assertFalse(CharFormatUtil.isKPrefixed("k_valid_because_not_camel_case"));
   assertFalse(CharFormatUtil.isKPrefixed("K_valid_because_not_camel_case"));
 }
 @Test
 public void testKPrefixedValidVariableNamesStartingWithK() {
   assertFalse(CharFormatUtil.isKPrefixed("koalasEatKale"));
   assertFalse(CharFormatUtil.isKPrefixed("KoalasEatKale"));
   assertFalse(CharFormatUtil.isKPrefixed("k"));
 }
 @Test
 public void testKPrefixedInvalidVariableNamesStartingWithK() {
   assertTrue(CharFormatUtil.isKPrefixed("KBadConstantName"));
   assertTrue(CharFormatUtil.isKPrefixed("kBadConstantName"));
 }
 @Test
 public void testLowerCamelCaseValidWord() {
   assertTrue(CharFormatUtil.isLowerCamelCase("helloWorld"));
 }
 @Test
 public void testUpperCamelCaseValidWord() {
   assertTrue(CharFormatUtil.isUpperCamelCase("HelloWorld"));
 }