Function test_ns_provider

tests/test_commandset.py:1224–1239

This exercises code in with_argparser() decorator that calls namespace providers

()

def test_ns_provider() -> None:
    """This exercises code in with_argparser() decorator that calls namespace providers"""
    ns_provider_set = NsProviderSet(1)
    app = NsProviderApp(auto_load_commands=False)

    # First test the case in which a namespace provider function resides in a CommandSet class which is registered.
    # with_argparser() will pass the CommandSet instance to the ns_provider() function.
    app.register_command_set(ns_provider_set)
    run_cmd(app, "test_ns")
    assert app.last_result == ns_provider_set

    # Now test the case in which a namespace provider function resides in a CommandSet class which is not registered.
    # with_argparser() will receive None from cmd2.Cmd._resolve_func_self() and therefore pass app as self to ns_provider().
    app.unregister_command_set(ns_provider_set)
    run_cmd(app, "test_ns")
    assert app.last_result == app