def test_equal_2(self): self.assertEqual( letter_pattern(['general', 'admiral', 'piglets', 'secrets']), "*******")
def test_equal_1(self): self.assertEqual(letter_pattern(['war', 'rad', 'dad']), "*a*")
def test_equal_3(self): self.assertEqual(letter_pattern(['family']), "family")
def test_equal_2(self): self.assertEqual(letter_pattern( ['general', 'admiral', 'piglets', 'secrets']), "*******")