def test_pop_from_empty_stack(self):
model = ModifiedStackViewModel()
model.set_pop_size(1)
model.pop()
self.assertEqual('count should be positive', model.get_error_message())
def test_when_pop_size_non_int(self):
model = ModifiedStackViewModel()
model.set_pop_size('AND THEN JUST POP ME')
model.pop()
self.assertEqual('Input contains non int value',
model.get_error_message())
class TestViewModelFakeLogging(unittest.TestCase):
def setUp(self):
self.view_model = ModifiedStackViewModel(FakeLogger())
def test_logging_init(self):
self.assertEqual('Stack object was successfully created',
self.view_model.logger.get_last_message())
def test_logging_set_one_input_element(self):
self.view_model.set_pushed_element(5)
self.assertEqual("Setting pushed element to: 5",
self.view_model.logger.get_last_message())
def test_logging_set_array_input(self):
self.view_model.set_input_array([1, 2, 3])
self.assertEqual("Setting input array to: [1, 2, 3]",
self.view_model.logger.get_last_message())
def test_logging_set_push_state(self):
self.view_model.set_push_state("N")
self.assertEqual("Setting push state to: N",
self.view_model.logger.get_last_message())
def test_logging_clear_error_message(self):
self.view_model.clear_error_message()
self.assertEqual("Error message was successfully cleared",
self.view_model.logger.get_last_message())
def test_logging_push_btn_clicked(self):
self.view_model.set_push_state('One')
self.view_model.set_pushed_element(5)
self.view_model.push()
self.assertEqual("Push button was clicked",
self.view_model.logger.get_log_messages()[-3])
def test_logging_push_one_element(self):
self.view_model.set_push_state('One')
self.view_model.set_pushed_element(5)
self.view_model.push()
self.assertEqual(
"Operation push successfully completed with single element. Push: 5",
self.view_model.logger.get_last_message())
def test_logging_push_array(self):
self.view_model.set_push_state('N')
self.view_model.set_input_array([1, 2, 3, 4, 5])
self.view_model.push()
self.assertEqual(
"Operation push successfully completed with array. Push: [1, 2, 3, 4, 5]",
self.view_model.logger.get_last_message())
def test_logging_push_wrong_element(self):
self.view_model.set_push_state('N')
self.view_model.set_input_array('abc')
self.view_model.push()
self.assertEqual("Push error: Input contains non int value",
self.view_model.logger.get_last_message())
def test_logging_full_log(self):
expected_logs = [
'Stack object was successfully created',
'Setting push state to: One', 'Setting pushed element to: 5',
'Push button was clicked',
'Error message was successfully cleared',
'Operation push successfully completed with single element. Push: 5'
]
self.view_model.set_push_state('One')
self.view_model.set_pushed_element(5)
self.view_model.push()
self.assertEqual(expected_logs,
self.view_model.logger.get_log_messages())
def test_logging_set_pop_size(self):
self.view_model.set_pop_size(1)
self.assertEqual("Setting pop size to: 1",
self.view_model.logger.get_last_message())
def test_logging_pop_btn_clicked(self):
self.view_model.set_pop_size(1)
self.view_model.pop()
self.assertEqual("Pop button was clicked",
self.view_model.logger.get_log_messages()[2])
def test_logging_pop_success(self):
self.view_model.set_push_state('N')
self.view_model.set_input_array([1, 2, 3, 4, 5])
self.view_model.push()
self.view_model.set_pop_size(1)
self.view_model.pop()
self.assertEqual("Operation pop successfully completed. Pop: 1",
self.view_model.logger.get_last_message())
def test_logging_pop_exception(self):
self.view_model.set_pop_size('a')
self.view_model.pop()
self.assertEqual("Pop error: Input contains non int value",
self.view_model.logger.get_last_message())
def test_logging_get_top_btn_log(self):
self.view_model.get_top()
self.assertEqual("Getting top button was clicked",
self.view_model.logger.get_log_messages()[1])
def test_logging_get_top_empty_stack(self):
self.view_model.get_top()
self.assertEqual("Result from getting top element: Stack is empty",
self.view_model.logger.get_last_message())
def test_logging_get_top_happy_path(self):
self.view_model.set_push_state('N')
self.view_model.set_input_array([1, 2, 3, 4, 5])
self.view_model.push()
self.view_model.get_top()
self.assertEqual("Result from getting top element: 5",
self.view_model.logger.get_last_message())
def test_logging_get_min_btn_log(self):
self.view_model.get_min()
self.assertEqual("Getting min button was clicked",
self.view_model.logger.get_log_messages()[1])
def test_logging_get_min_empty_stack(self):
self.view_model.get_min()
self.assertEqual("Result from getting min element: Stack is empty",
self.view_model.logger.get_last_message())
def test_logging_get_min_happy_path(self):
self.view_model.set_push_state('N')
self.view_model.set_input_array([1, 2, 3, 4, 5])
self.view_model.push()
self.view_model.get_min()
self.assertEqual("Result from getting min element: 1",
self.view_model.logger.get_last_message())