def test_currency_changes_for_several_numbers_returns_list_in_euros_with_decimals(self):
self.assertEqual(multiple_currency_euro([1.2, 190.75, 4.67]), [1.08, 171.68, 4.20])
def euro_test_currency_changes_for_several_numbers_with_letters(self):
self.assertEqual(multiple_currency_euro([1, 2, "a"]), "That's not a valid currency amount")
def test_currency_changes_for_several_numbers_returns_list_in_euros(self):
self.assertEqual(multiple_currency_euro([1, 2, 3]), [.9, 1.8, 2.7])
