def test_convert_file_success(self, mock_open_, mock_print, mock_markdown):
filename = 'foo'
cli.convert_file(filename, sentinel.RendererCls)
mock_open_.assert_called_with(filename, 'r')
mock_print.assert_called_with('rendered text', end='')
def test_convert_file_fail(self, mock_exit, mock_open_):
filename = 'foo'
cli.convert_file(filename, sentinel.RendererCls)
mock_open_.assert_called_with(filename, 'r')
mock_exit.assert_called_with('Cannot open file "foo".')
def test_convert_file_success(self, mock_open_, mock_write, mock_markdown):
filename = 'foo'
cli.convert_file(filename, sentinel.RendererCls)
mock_open_.assert_called_with(filename, 'r', encoding='utf-8')
mock_write.assert_called_with('rendered text'.encode())