testingGroovyMocks.groovy

    @Test
    void testServiceStoresAllTheValues() {
        //given
        def mockForDataStore = new MockFor(Datastore)
        mockForDataStore.demand.open { true }
        mockForDataStore.demand.storeField {
            k, v ->
                if (k == "someKey") assert(v == "someValue")
                if (k == "anotherKey") assert(k == "anotherValue")
        }
        def mockDataStore = mockForDataStore.proxyInstance()
        def service = new Service(mockDataStore)

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

        //then
        mockForDataStore.verify mockDataStore
    }