def test_first_valid_second_valid_div_calculate(self): viewmodel = RationalNumberViewModel() viewmodel.set_first_number("12/3") viewmodel.set_second_number("2/7") viewmodel.set_operation("/") viewmodel.calculate() self.assertEqual("14", viewmodel.get_result())
def test_number_updated_result_empty(self): viewmodel = RationalNumberViewModel() viewmodel.set_first_number("12/3") viewmodel.set_second_number("2/7") viewmodel.set_operation("+") viewmodel.calculate() viewmodel.set_first_number("12/11") self.assertEqual("", viewmodel.get_result())
class TestViewModelFakeLogging(unittest.TestCase): def setUp(self): self.view_model = RationalNumberViewModel(FakeLogger()) def test_logging_init(self): self.assertEqual("Start view", self.view_model.logger.get_last_message()) def test_logging_first_number_is_empty(self): self.view_model.set_second_number("3/5") self.view_model.validate_input_numbers() self.assertEqual("First number is empty", self.view_model.logger.get_last_message()) def test_logging_first_number_is_invalid(self): self.view_model.set_first_number(r"3\5") self.view_model.set_second_number("3/5") self.view_model.validate_input_numbers() self.assertEqual("First number is invalid", self.view_model.logger.get_last_message()) def test_logging_first_numbers_denominator_is_null(self): self.view_model.set_first_number("3/0") self.view_model.set_second_number("3/5") self.view_model.validate_input_numbers() self.assertEqual("Denominator of first number is zero", self.view_model.logger.get_last_message()) def test_logging_second_number_is_empty(self): self.view_model.set_first_number("3/5") self.view_model.validate_input_numbers() self.assertEqual("Second number is empty", self.view_model.logger.get_last_message()) def test_logging_second_number_is_invalid(self): self.view_model.set_first_number("3/5") self.view_model.set_second_number(r"3\5") self.view_model.validate_input_numbers() self.assertEqual("Second number is invalid", self.view_model.logger.get_last_message()) def test_logging_second_numbers_denominator_is_null(self): self.view_model.set_first_number("3/5") self.view_model.set_second_number("3/0") self.view_model.validate_input_numbers() self.assertEqual("Denominator of second number is zero", self.view_model.logger.get_last_message()) def test_logging_operation_is_invalid(self): self.view_model.set_operation("//") self.view_model.validate_operation() self.assertEqual("Operation // is invalid", self.view_model.logger.get_last_message()) def test_division_by_zero(self): self.view_model.set_first_number("3/4") self.view_model.set_second_number("0/5") self.view_model.set_operation("/") self.view_model.validate_input() self.assertEqual("Division by zero", self.view_model.logger.get_last_message()) def test_numbers_and_operation_are_correct(self): self.view_model.set_first_number("3/4") self.view_model.set_second_number("3/5") self.view_model.set_operation("*") self.view_model.validate_input() self.assertEqual("Operation and input numbers are correct", self.view_model.logger.get_last_message()) def test_logger_calculate(self): self.view_model.set_first_number("3/4") self.view_model.set_second_number("3/5") self.view_model.set_operation("*") self.view_model.calculate() self.assertEqual( "Calculating was finished successfully. Result: 3/4 * 3/5 = 9/20", self.view_model.logger.get_last_message())