def test_accrate_numbers(self): self.assertEqual( number_sum(['1','2','3']), 6)
def test_non_3_number(self): self.assertEqual( number_sum(['1','2']), "Exactly 3 numbers are required")
def test_teen_15_16_numbers(self): self.assertEqual( number_sum(['1','2','15']), 18)
def test_non_numeric(self): self.assertEqual( number_sum(['1','2','3a']), "All inputs must be numeric")