_ * protocolModel.getTestEnum() >> "SECOND"

        expect:
        TestModel model = adapter.adapt(TestModel.class, protocolModel)
        model.testEnum == TestEnum.SECOND
    }

    def cantAdaptInvalidEnumLiteral() {
        setup:
        TestProtocolModel protocolModel = Mock()
        _ * protocolModel.getTestEnum() >> "NONEXISTENT"

        when: