def test_write_table_does_not_overwrite(mock_is_file, mock_open):
mock_is_file.return_value = True
tt = TableTransformer('file.txt')
with pytest.raises(FileExistsError):
tt.write_table('table', 'file')
mock_open.assert_not_called()
def test_read_data(mock_csv_reader, mock_open, data):
mock_csv_reader.return_value = data
tt = TableTransformer('file.txt')
output = tt.read_data()
mock_open.assert_called()
mock_csv_reader.assert_called()
assert output == data
def test_read_data_path_is_dir(mock_open):
mock_open.side_effect = IsADirectoryError()
tt = TableTransformer('file.txt')
tt.logger = Mock()
output = tt.read_data()
mock_open.assert_called()
tt.logger.error.assert_called()
assert output is None
def test_read_data_file_not_found(mock_open):
mock_open.side_effect = FileNotFoundError()
tt = TableTransformer('file.txt')
tt.logger = Mock()
output = tt.read_data()
mock_open.assert_called()
tt.logger.error.assert_called()
assert output is None
def test_write_table(mock_csv_writer, mock_open, data):
csv_writer_instance = Mock()
mock_csv_writer.return_value = csv_writer_instance
file = 'file.txt'
tt = TableTransformer('file.txt')
tt.write_table(data, file)
mock_open.assert_called_with(file, mode='w', encoding='utf-8', newline='')
mock_csv_writer.assert_called()
assert len(csv_writer_instance.writerow.call_args_list) == 2
csv_writer_instance.writerow.assert_called_with(data[1])
def test_basename_excl_extension():
tt = TableTransformer('file.txt')
path = '/path/to/basename.txt'
output = tt.basename_excl_extension(path)
assert output == 'basename'
path = 'basename.txt'
output = tt.basename_excl_extension(path)
assert output == 'basename'
path = 'nonsense'
output = tt.basename_excl_extension(path)
assert output == ''
def test_run_catches_FileExistsError():
tt = TableTransformer('file.txt')
tt.extractors = [Mock(), Mock()]
tt.logger = Mock()
tt.read_data = Mock()
tt.write_table = Mock(side_effect=FileExistsError('error'))
tt.run()
assert len(tt.logger.error.call_args_list) == len(tt.extractors)
def test_run_does_nothing_if_no_extractor():
tt = TableTransformer('file.txt')
tt.extractors = []
tt.logger = Mock()
tt.read_data = Mock()
tt.write_table = Mock()
tt.run()
tt.read_data.assert_not_called()
tt.write_table.assert_not_called()
tt.logger.error.assert_called()
def test_run():
tt = TableTransformer('file.txt')
tt.extractors = [Mock(), Mock()]
tt.logger = Mock()
tt.read_data = Mock()
tt.write_table = Mock()
tt.output_template = Mock()
tt.run()
for e in tt.extractors:
e.extract.assert_called_once()
e.create_table.assert_called_once()
tt.read_data.assert_called_once()
assert len(tt.write_table.call_args_list) == len(tt.extractors)
assert (len(tt.output_template.substitute.call_args_list) == len(
tt.extractors))
def test_run_does_nothing_if_no_data():
tt = TableTransformer('file.txt')
tt.extractors = [Mock(), Mock()]
tt.read_data = Mock(return_value=None)
tt.write_table = Mock()
tt.run()
tt.read_data.assert_called()
tt.write_table.assert_not_called()
for e in tt.extractors:
e.extract.assert_not_called()
e.create_table.assert_not_called()