Function load_tests

Lib/test/test_pdb.py:5199–5247

(loader, tests, pattern)

def load_tests(loader, tests, pattern):
    from test import test_pdb

    def setUpPdbBackend(backend):
        def setUp(test):
            import pdb
            pdb.set_default_backend(backend)
        return setUp

    def tearDown(test):
        # Ensure that asyncio state has been cleared at the end of the test.
        # This prevents a "test altered the execution environment" warning if
        # asyncio features are used.
        _set_event_loop_policy(None)

        # A doctest of pdb could have residues. For example, pdb could still
        # be running, or breakpoints might be left uncleared. These residues
        # could potentially interfere with the following test, especially
        # when we switch backends. Here we clear all the residues to restore
        # to its pre-test state.

        # clear all the breakpoints left
        import bdb
        bdb.Breakpoint.clearBreakpoints()

        # Stop tracing and clear the pdb instance cache
        if pdb.Pdb._last_pdb_instance:
            pdb.Pdb._last_pdb_instance.stop_trace()
            pdb.Pdb._last_pdb_instance = None

        # If garbage objects are collected right after we start tracing, we
        # could stop at __del__ of the object which would fail the test.
        gc.collect()

    tests.addTest(
        doctest.DocTestSuite(
            test_pdb,
            setUp=setUpPdbBackend('monitoring'),
            tearDown=tearDown,
        )
    )
    tests.addTest(
        doctest.DocTestSuite(
            test_pdb,
            setUp=setUpPdbBackend('settrace'),
            tearDown=tearDown,
        )
    )
    return tests


if __name__ == '__main__':