	@Test
	public void testSignNotNullNotEqual() 
	{

		try 
		{
			byte[] Signature = HMAC.sign("Some_String", "Password");
			assertNotNull(Signature);
			assertTrue(!Signature.toString().equals("SOME_STRING"));
		}
		catch (Exception e) 
		{
			assertTrue(e instanceof Exception);
		}
	}