Method call

Lib/test/test_zoneinfo/test_zoneinfo.py:1238–1247

Decorator to call the addition methods. This will call a function which adds at least one new entry into the `cases` dictionary. The decorator will also assert that something was added to the dictionary.

(f)

        # The decorator for calling is used to make it more obvious that each
        # function is actually called (if it's not decorated, it's not called).
        def call(f):
            """Decorator to call the addition methods.

            This will call a function which adds at least one new entry into
            the `cases` dictionary. The decorator will also assert that
            something was added to the dictionary.
            """
            prev_len = len(cases)
            f()
            assert len(cases) > prev_len, "Function did not add a test case!"

        NORMAL = cls.NORMAL
        FOLD = cls.FOLD