def test_load_data_cancel(self):
        fd = GlueDataDialog()
        mock_file_exec(fd, cancel=True)
        assert fd.load_data() == []
Return None if user cancels operation
dataset/ETHPy150Open glue-viz/glue/glue/dialogs/data_wizard/qt/tests/test_data_wizard.py/TestGlueDataDialog.test_load_data_cancel