def test_error_for_remove_vowels(self):
		"""Test that a typer error occurs when a string is not passed"""
		with self.assertRaises(TypeError):
			main.remove_vowels(5)
			main.remove_vowels(['hello', 'world'])
			main.remove_vowels({'hi': 'whats up', 'num' : 90})
	def test_vowels_removed(self):
		"""Test that the vowels are actually removed from the string"""
		self.assertEqual(main.remove_vowels('this is test'), 
				 ['t', 'h', 's', ' ', 's', ' ', 't', 's', 't'])