def test_true_2(self):
     self.assertTrue(is_uppercase('HELLO I AM DONALD'))
 def test_false_2(self):
     self.assertFalse(is_uppercase('hello I AM DONALD'))
 def test_true(self):
     self.assertTrue(is_uppercase('C'))
 def test_false(self):
     self.assertFalse(is_uppercase('c'))