Pact-jvm: Contract testing (CDC) for POST request in Java

[DenisSokol]

I'm trying to write a contract test to the service:

@PactTestFor(providerName = "java-provider")
@PactFolder("target/pacts")
public class ConsumerPact extends BaseConsumerTest {

@Pact(consumer = "java-consumer")
public RequestResponsePact buildPactShouldReturnNoContent(final PactDslWithProvider builder) {
    return builder
            .uponReceiving("Service should return no content with status code 204")
            .path("/api/v1/service/email")
            .headers("Authorization",
                    Constants.Request.token)
            .method("POST")
            .body("{\n" +
                    "  \"emails\": [\n" +
                    "    {\n" +
                    "      \"bccRecipients\": \"John Doe <[email protected]>; Jane Doe <[email protected]>\",\n" +
                    "      \"body\": \"body\",\n" +
                    "      \"ccRecipients\": \"John Doe <[email protected]>; Jane Doe <[email protected]>\",\n" +
                    "      \"recipients\": \"John Doe <[email protected]>; Jane Doe <[email protected]>\",\n" +
                    "      \"subject\": \"subject\"\n" +
                    "    }\n" +
                    "  ]\n" +
                    "}")
            .willRespondWith()
            .status(NO_CONTENT.value())
            .toPact();
}

@Test
@PactTestFor(pactMethod = "buildPactShouldReturnNoContent")
public void shouldReturnNoContent(final MockServer mockServer) throws IOException {
    int responseCode = postAuthorizedRequestToMockServer(mockServer, defaultPath);
    assertThat(responseCode, is(HttpStatus.SC_NO_CONTENT));
}
}

here is the method thats is used for Authorization:

@ExtendWith(PactConsumerTestExt.class)
public abstract class BaseConsumerTest {

public int postAuthorizedRequestToMockServer(final MockServer mockServer, final String path)
  throws IOException {
return Request.Post(mockServer.getUrl() + path)
    .addHeader("Authorization", Constants.Request.token)
    .execute()
    .returnResponse()
    .getStatusLine()
    .getStatusCode();
}

once i ran the test error message is displayed:

21:20:52.659 [HTTP-Dispatcher] DEBUG au.com.dius.pact.consumer.BaseJdkMockServer - Received request:    method: POST
    path: /api/v1/service/email
    query: {}
    headers: {Accept-encoding=[gzip,deflate], Connection=[Keep-Alive], Host=[hub.docker.local:57274], User-agent=[Apache-HttpClient/4.5.10 (Java/11.0.6)], Authorization=[Bearer eyJhbGciOiJSUzI1NiIsImtpZCI6Ijg1NThkNmJiZGE2MjkyOWUxMmYwOTQ4ZjNhMDY1NzVhIiwidHlwIjoiSldUIn0.eyJuYmYiOjE1ODcwMzYwODjoxNTg3MDM2MDg2LCJpZHAiOiJsb2NhbCIsInBlb3BsZV91c2VyX2lkIjoiMTE5Iiwic2NvcGUiOlsiZ2NwLWFwaSIsIklkZW50aXR5U2VydmVyQXBpIiwib2ZmbGluZV9hY2Nlc3MiXSwiYW1yIjpbInB3ZCJdfQ.b4o-u6K9mGPxjbuPOTg87OlK7H9LvoTYtW8IxdVlBKZAh8lzzykqrRhZBEi_flu6CEPShZqe5eMWkrqWK0CSP5mjsPyGyq9fSMuruKZYqbTZUpNTlypt5Ms6scbnf9pqV6xiuaulgducL7Y9eUISSmlPO49OTdwf9qWxqXzkaUgGZSPvMkE9jiy1UQo2JGrYcSjRIUV6CAu36D_lCIXu3cklo-W9KOXkbw4gDsaPM5GH-fopkt7UITdpf0QrUsPe-Tc1dDo-UXoaDNlTInSqn3dgkV_RAPC4pbWFEYHjL-Wh1cD4A2_vKogWc2OSn_UqfVkSDBjC4xYeAD6-rJpHJQ], Content-length=[0]}
    matchers: MatchingRules(rules={})
    generators: Generators(categories={})
    body: EMPTY
21:20:52.666 [HTTP-Dispatcher] DEBUG au.com.dius.pact.core.matchers.RequestMatching - comparing to expected request: 
    method: POST
    path: /api/v1/service/email
    query: {}
    headers: {Authorization=[Bearer eyJhbGciOiJSUzI1NiIsImtpZCI6Ijg1NThkNmJiZGE2MjkyOWUxMmYwOTQ4ZjNhMDY1NzVhIiwidHlwIjoiSldUIn0.eyJuYmYiOjE1ODcwMzYwOjRIUV6CAu36D_lCIXu3cklo-W9KOXkbw4gDsaPM5GH-fopkt7UITdpf0QrUsPe-Tc1dDo-UXoaDNlTInSqn3dgkV_RAPC4pbWFEYHjL-Wh1cD4A2_vKogWc2OSn_UqfVkSDBjC4xYeAD6-rJpHJQ]}
    matchers: MatchingRules(rules={})
    generators: Generators(categories={})
    body: PRESENT({
  "emails": [
    {
      "bccRecipients": "John Doe <[email protected]>; Jane Doe <[email protected]>",
      "body": "body",
      "ccRecipients": "John Doe <[email protected]>; Jane Doe <[email protected]>",
      "recipients": "John Doe <[email protected]>; Jane Doe <[email protected]>",
      "subject": "subject"
    }
  ]
})
21:20:52.677 [HTTP-Dispatcher] DEBUG au.com.dius.pact.core.matchers.HeaderMatcher - Comparing header 'Authorization': 'Bearer eyJhbGciOiJSUzI1NiIsImUqfVkSDBjC4xYeAD6-rJpHJQ' to 'Bearer eyJhbGciOiJSUzI1NiIsImtpZCI6Ijg1NThkNmJiZGE2MjkyOWUxMmYwOTQ4ZjNhMDY1NzVhIiwidHlwIjoiSldUIn0.eyJunB3ZCJdfQ.b4o-u6K9mGPxjbuQrUsPe-Tc1dDo-UXoaDNlTInSqn3dgkV_RAPC4pbWFEYHjL-Wh1cD4A2_vKogWc2OSn_UqfVkSDBjC4xYeAD6-rJpHJQ'
21:20:52.712 [HTTP-Dispatcher] DEBUG au.com.dius.pact.core.matchers.RequestMatching - Request mismatch: [BodyTypeMismatch(expected=application/json, actual=text/plain)]
21:20:52.729 [HTTP-Dispatcher] DEBUG au.com.dius.pact.consumer.BaseJdkMockServer - Generating response:     status: 500
    headers: {Access-Control-Allow-Origin=[*], Content-Type=[application/json], X-Pact-Unexpected-Request=[1]}
    matchers: MatchingRules(rules={})
    generators: Generators(categories={})
    body: PRESENT({ "error": "Unexpected request : \tmethod: POST\n\tpath: \/api\/v1\/service\/email\n\tquery: {}\n\theaders: {Accept-encoding=[gzip,deflate], Connection=[Keep-Alive], Host=[hub.docker.local:57274], User-agent=[Apache-HttpClient\/4.5.10 (Java\/11.0.6)], Authorization=[Bearer eyJhbGciOiJSUzI1NiIsImqfVkSDBjC4xYeAD6-rJpHJQ], Content-length=[0]}\n\tmatchers: MatchingRules(rules={})\n\tgenerators: Generators(categories={})\n\tbody: EMPTY" })
21:20:52.729 [main] DEBUG org.apache.http.wire - http-outgoing-1 << "HTTP/1.1 500 Internal Server Error[\r][\n]"

i'm not sure why it's complaining

Request mismatch: [BodyTypeMismatch(expected=application/json, actual=text/plain)]

How do i need to pass the body as application/json in my request?

[uglyog]

You can either add the content type header, or add the content type as the second parameter to .body.