Mocking of class is not working in Spock Test case

Question

I am trying write a test case for Rest Post method which gets request object, converts into domain object and saves an object using spring jpa repository.

Folder Structure:

core.jar - domain, repository and daos core.war - service, spock test, controllers. core.jar is part dependency jar

Example Request:

public class RequestObject {

    private Long value2;
    private Long value1;

... getters and setters

}

Domain Object

public class DomainObject {

        private Object object1;
        private Object object2;
        private type field1;
        private type field2;
        private long version;
        private date datecreated

    ... getters and setters

    }

Service Method

  @Autowired
  DomainDAO domainDAO; // DomainDAO has domainRepository Autowired

@RequestMapping( value = "/domain", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE )
public DomainObject saveDomainObject(@RequestBody RequestObject  request)
{
   return domainDAO.saveDomain(buildDomainObject(request))
}

private DomainObject buildDomainObject(RequestObject  request)
{
  DomainObject object = new DomainObject()
  object.setField1(request.getValue2());
  etc ....
}

I am to successfully save/update if I using REST Client/SOAP/Swagger to the database. But when I try to write the spock test case with mocking I am getting below errors

TEST CASE

  void "saveDomainObject success"() {
    setup:
    1 * domainDAO.saveDomain(domainObject) >> {DomainObject}
    Gson gson = new Gson();
    String json = gson.toJson(domainRequest);

    when:
    def resp = mockMvc.perform(post("/domain")
        .contentType(MediaType.APPLICATION_JSON_VALUE)
        .content(json)).andReturn().response
    def content = new JsonSlurper().parseText(resp.contentAsString)
    then:
    println content
  }

ERROR MESSAGE

Too few invocations for:

1 * domainDAO.saveDomain(domainObject) >> {DomainObject}   (0 invocations)

Unmatched invocations (ordered by similarity):

1 * domainDAO.saveDomain(com.test.core.domain.DomainObject@6f27c0ef)


    at org.spockframework.mock.runtime.InteractionScope.verifyInteractions(InteractionScope.java:78)
at org.spockframework.mock.runtime.MockController.leaveScope(MockController.java:76)
at com.test.core.rest.service.DomainServiceServiceSpec.saveDomainObject success(DomainServiceSpec.groovy:132)

I am facing issues to test with save object, i tried with multiple options but still getting the same error. I doubt this is happening since domain object is in different jar, can any one help me to resolve the issue?

Thanks

Answer 1

When you specify saveDomain(domainObject) , you are telling Spock to expect the method to be called with the value in domainObject as the parameter. In your code, however, you're creating a new DomainObject and passing that to your mock. This is what I think you want:

1 * domainDAO.saveDomain(_ as DomainObject) >> { it[0] }