def METHOD_NAME():
    duplicate_data = pd.DataFrame({'col1': [1, 2, 1, 2, 1, 2, 1, 2, 1, 2],
                                   'col2': [1, 2, 1, 2, 1, 2, 1, 2, 1, 2],
                                   'col3': [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]})
    check_obj = DataDuplicates()
    assert_that(check_obj.run(duplicate_data).value, equal_to(0))