Pact (contract testing)

@RunWith(SpringRestPactRunner.class)
@Provider("provider-name-given-in-pact-broker")
@PactBroker
@SpringBootTest(
        classes = CatalogueSearchApplication.class,
        webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@DirtiesContext(classMode = DirtiesContext.ClassMode.BEFORE_EACH_TEST_METHOD)
@UseAdviceWith
@MockEndpointsAndSkip("bean:my-data-store")
public class MyApplicationProviderContractIT {

    @EndpointInject(uri = "mock:bean:my-data-store")
    MockEndpoint mockMyDataStore;

    @TestTarget
    public final Target target = new SpringBootHttpTarget();

    /**
     * Implements what the application should return when the following Pact
     * interaction is executed:
     * "state name as defined in the pact contract"
     */
    @State("state name as defined in the pact contract")
    @Test
    public void lookupUsingQueryParams() throws Exception {
        // Configure the mock bean to return some fake data
        mockMyDataStore.whenAnyExchangeReceived(new MockDataStoreProcessor());

        // The application will function otherwise as normal,
        // returning a response back to the caller
    }

    @State("another state from the pact contract")
    @Test
    public void anotherTest() throws Exception {
        // ...
    }

    class MockDataStoreProcessor implements Processor {
        @Override
        public void process(Exchange exchange) throws Exception {
            exchange.getMessage().setBody("some fake data");
        }
    }
}