def test_then_returns_same_number(self): assert scal_add("1") == 1
def test_then_includes_negatives_in_error_message(self): self.assertRaisesRegexp(ValueError, '.*-2.*-4.*', lambda: scal_add("-2,-4"))
def test_then_returns_zero(self): assert scal_add("") == 0
def test_then_the_char_afterwards_is_a_delimiter(self): assert scal_add("//:\n2:2") == 4
def test_then_raises_error(self): self.assertRaises(ValueError, lambda: scal_add("-2,2"))
def test_then_returns_sum_of_numbers(self): assert scal_add("3,5,8,13,21") == 50
def test_then_returns_sum_of_numbers(self): assert scal_add("3\n5,8") == 16