Target Server failed to respond

Hi, I’m currently trying to write a simple pact consumer test with Junit5 & Lambda DSL. I’m stuck with the mock server telling me “Target Server failed to respond”

My versions are: pact-jvm-consumer-junit5 4.0.8 pact-jvm-consumer-java8 4.0.8 Junit Jupiter 5.5.2 Java 11 Kotlin 1.3.70 (I added kotlin-stdlib to my pom.xml with version 1.3.70 for scope test)

I get the following in the logs 07:52:54.773 [main] DEBUG au.com.dius.pact.consumer.junit5.PactConsumerTestExt - Found @PactTestFor annotation on test method 07:52:54.784 [main] DEBUG au.com.dius.pact.consumer.junit5.PactConsumerTestExt - Found @PactTestFor annotation on test class 07:52:54.785 [main] DEBUG au.com.dius.pact.consumer.junit5.PactConsumerTestExt - providerInfo = ProviderInfo(providerName=contract-service, hostInterface=, port=8080, pactVersion=null, providerType=null) 07:52:54.787 [main] DEBUG au.com.dius.pact.consumer.junit5.PactConsumerTestExt - Looking for @Pact method named 'contract' for provider 'contract-service' 07:52:54.790 [main] DEBUG au.com.dius.pact.consumer.junit5.PactConsumerTestExt - Invoking method 'contract' to get Pact for the test 'testContract' 07:52:54.973 [main] DEBUG au.com.dius.pact.consumer.BaseJdkMockServer - Starting mock server 07:52:54.975 [main] DEBUG au.com.dius.pact.consumer.BaseJdkMockServer - Mock server started: /127.0.0.1:8080 07:52:55.539 [HTTP-Dispatcher] DEBUG au.com.dius.pact.consumer.BaseJdkMockServer - Received request: method: GET path: /contracts/13 query: {} headers: {Accept-encoding=[gzip,deflate], Connection=[Keep-Alive], Host=[127.0.0.1:8080], User-agent=[Apache-HttpClient/4.5.6 (Java/11.0.6)]} matchers: MatchingRules(rules={}) generators: Generators(categories={}) body: EMPTY 07:52:55.542 [HTTP-Dispatcher] DEBUG au.com.dius.pact.core.matchers.RequestMatching - comparing to expected request: method: GET path: /contracts/13 query: {} headers: {} matchers: MatchingRules(rules={}) generators: Generators(categories={}) body: MISSING 07:52:56.072 [HTTP-Dispatcher] DEBUG au.com.dius.pact.core.matchers.Matching - Found a matcher for text/plain -> au.com.dius.pact.core.matchers.PlainTextBodyMatcher@aa4b5e0 07:52:56.073 [HTTP-Dispatcher] DEBUG au.com.dius.pact.core.matchers.RequestMatching - Request mismatch: [] Mar 23, 2020 7:52:56 AM org.apache.http.impl.execchain.RetryExec execute INFO: I/O exception (org.apache.http.NoHttpResponseException) caught when processing request to {}->http://127.0.0.1:8080: The target server failed to respond

My code looks like this:

…

import au.com.dius.pact.consumer.MockServer;
import au.com.dius.pact.consumer.dsl.PactDslWithProvider;
import au.com.dius.pact.consumer.junit5.PactConsumerTestExt;
import au.com.dius.pact.consumer.junit5.PactTestFor;
import au.com.dius.pact.core.model.RequestResponsePact;
import au.com.dius.pact.core.model.annotations.Pact;
import static io.pactfoundation.consumer.dsl.LambdaDsl.newJsonBody;
import io.pactfoundation.consumer.dsl.LambdaDslJsonBody;
import java.io.IOException;
import org.apache.http.HttpResponse;
import org.apache.http.client.fluent.Request;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;

import java.util.HashMap;
import java.util.Map;

@ExtendWith(PactConsumerTestExt.class)
@PactTestFor(providerName = "contract-service", port = "8080")
public class PactContractServiceTest {

        private final String CONTRACT = "/contracts";

        private static final String CONTENT_HEADER = "Content-Type";

        private static final String CONTENT_HEADER_VALUE = "application/hal+json";

        @Pact(consumer = "mail-service", provider = "contract-service")
        public RequestResponsePact contract(PactDslWithProvider builder) {

            LambdaDslJsonBody contractEntityJson = newJsonBody((o) -> {
                o.id("id");
                o.stringType("userId");
               … // irrelevant
                o.numberType("amount");
            });

            return builder
                    .given("Contract with id 13 exists")
                    .uponReceiving("retrieving contract info")
                        .path(CONTRACT + "/13")
                        .method("GET")
                    .willRespondWith()
                        .status(200)
                        .headers(responseHeaders())
                        .body(contractEntityJson.build())
                    .toPact();
        }

        @Test
        @PactTestFor(pactMethod = "contract")
        public void testContract(MockServer mockServer) throws IOException {
            HttpResponse httpResponse = Request.Get(mockServer.getUrl() + CONTRACT + "/13").execute().returnResponse();
            assertEquals(httpResponse.getStatusLine().getStatusCode(), 200);
        }

        private Map<String, String> responseHeaders() {
            Map<String, String> headers = new HashMap();
            headers.put(CONTENT_HEADER, CONTENT_HEADER_VALUE);
            return headers;
        }
}

I assume I’m either missing something very basic, or there’s a problem with the versions I use?

Any help is highly appreciated!

[broeser]

I think I fixed it by updating gson to 2.8.6 (I used 2.8.5 before) – I think this should be documented somewhere though (or work out of the box 😉 ).

[uglyog]

Closing this as it seems to always be due to outdated dependencies causing the issue.