def make_test_handler(testcase, *args, **kwargs):
    """
    Returns a TestHandler which will be used by the given testcase. This
    handler can be used to test log messages.

    Parameters
    ----------
    testcase: unittest.TestCase
        The test class in which the log handler will be used.
    *args, **kwargs
        Forwarded to the new TestHandler object.

    Returns
    -------
    handler: logbook.TestHandler
        The handler to use for the test case.
    """
    handler = TestHandler(*args, **kwargs)
    testcase.addCleanup(handler.close)
    return handler