@Test
public void testTrimTrailingCharacter() throws Exception {
assertEquals(null, StringUtils.trimTrailingCharacter(null, ' '));
assertEquals("", StringUtils.trimTrailingCharacter("", ' '));
assertEquals("", StringUtils.trimTrailingCharacter(" ", ' '));
assertEquals("\t", StringUtils.trimTrailingCharacter("\t", ' '));
assertEquals("a", StringUtils.trimTrailingCharacter("a ", ' '));
assertEquals(" a", StringUtils.trimTrailingCharacter(" a", ' '));
assertEquals(" a", StringUtils.trimTrailingCharacter(" a ", ' '));
assertEquals(" a b", StringUtils.trimTrailingCharacter(" a b ", ' '));
assertEquals(" a b c", StringUtils.trimTrailingCharacter(" a b c ", ' '));
}
