def METHOD_NAME():
    assert process_config(Noneable(Array(StringSource)), []).success
    assert process_config(Noneable(Array(StringSource)), None).success
    assert (
        'You have attempted to fetch the environment variable "DAGSTER_TEST_ENV_VAR" '
        "which is not set. In order for this execution to succeed it must be set in "
        "this environment."
        in process_config(Noneable(Array(StringSource)), ["test", {"env": "DAGSTER_TEST_ENV_VAR"}])
        .errors[0]
        .message
    )
    with environ({"DAGSTER_TEST_ENV_VAR": "baz"}):
        assert process_config(
            Noneable(Array(StringSource)), ["test", {"env": "DAGSTER_TEST_ENV_VAR"}]
        ).success