def always(matching_invocations, all_invocations):
    """
    This predicate verifies that all invocations must have matched.

    :param matching_invocations: All found matching invocations.
    :param all_invocations: All invocations of the Spy
    :return: True or False.
    """
    return len(matching_invocations) == len(all_invocations)