flink-python/pyflink/table/tests/test_expression_completeness.py

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from pyflink.testing.test_case_utils import PythonAPICompletenessTestCase, PyFlinkTestCase
from pyflink.table import Expression


class ExpressionCompletenessTests(PythonAPICompletenessTestCase, PyFlinkTestCase):
    """
    Tests whether the Python :class:`Expression` is consistent with
    Java `org.apache.flink.table.api.ApiExpression`.
    """
    @classmethod
    def python_class(cls):
        return Expression

    @classmethod
    def java_class(cls):
        return "org.apache.flink.table.api.ApiExpression"

    @classmethod
    def excluded_methods(cls):
        return {
            'asSummaryString',
            'accept',
            'toExpr',
            'getChildren',

            # The following methods have been replaced with the built-in methods in Python,
            # such as __and__ for and to be more Pythonic.
            'and',
            'or',
            'isGreater',
            'isGreaterOrEqual',
            'isLess',
            'isLessOrEqual',
            'isEqual',
            'isNotEqual',
            'plus',
            'minus',
            'dividedBy',
            'times',
            'mod',
            'power'
        }

    @classmethod
    def java_method_name(cls, python_method_name):
        return {'alias': 'as', 'in_': 'in'}.get(python_method_name, python_method_name)


if __name__ == '__main__':
    import unittest

    try:
        import xmlrunner
        testRunner = xmlrunner.XMLTestRunner(output='target/test-reports')
    except ImportError:
        testRunner = None
    unittest.main(testRunner=testRunner, verbosity=2)