Method trace

record_api/test.py:19–27

use exec so that it is called in child scope. alternatively could use IIFE but this is more verbose in the tests

(self, source: str)

        self.maxDiff = None

    def trace(self, source: str):
        """
        use exec so that it is called in child scope.

        alternatively could use IIFE but this is more verbose
        in the tests
        """
        with self.tracer:  # type: ignore
            exec(source)

    def assertCalls(self, *calls):
        self.assertListEqual(