@Test public void testContainsAlphabetOrPad() { assertFalse(codec.containsAlphabetOrPad(null)); assertFalse(codec.containsAlphabetOrPad(new byte[]{})); assertTrue(codec.containsAlphabetOrPad("OK".getBytes())); assertTrue(codec.containsAlphabetOrPad("OK ".getBytes())); assertFalse(codec.containsAlphabetOrPad("ok ".getBytes())); assertTrue(codec.containsAlphabetOrPad(new byte[]{codec.pad})); }