testServiceStoresTheValues.groovy

    @Test
    void testServiceStoresTheValues() {
        //given
        def mockForDataStore = new MockFor(Datastore)
        mockForDataStore.demand.open { true }
        mockForDataStore.demand.storeField { k, v -> true }
        def mockDataStore = mockForDataStore.proxyInstance()
        def service = new Service(mockDataStore)

        //when
        service.processEntry([someKey:"someValue"])

        //then
        mockForDataStore.verify mockDataStore
    }