Mocking RestTemplate in listener in unit test

[activitinike]

Hello,

We have RestTemplate class usage to make REST API calls, defined in Service tasks and listeners.

For unit testing, I would like to mock RestTemplate while running end to end process test.

I tried following, but it works only if I test listener class or JavaDelegate class directly, but not while executing process instance using ActivitiRule and InMemory config.

//Mock rest api calls
      RestTemplate restTemplate = new RestTemplate();
      MockRestServiceServer mockRestServer = MockRestServiceServer.createServer(restTemplate);
      
      //json response
      String responseString200_task = "{MyJsonStructure}";
      
      mockRestServer.expect(requestTo("RESTURLwkfl"))
               .andExpect(method(HttpMethod.POST))
               .andRespond(withStatus(HttpStatus.OK).contentType(MediaType.APPLICATION_JSON).body(responseString200_task));
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When I run process in unit test using:

activitiRule.getRuntimeService().startProcessInstanceByKey("mykey");
‍‍‍

It execute the process instance, but it still makes actual call to REST API server, rather than mocking the call.

Is there a way to make it work?
Similar situation for and DAO dependency in Listeners or ServiceTask delegate.

Thanks for any help.

[martin_grofcik]

Hi,

if you want to completely omit rest service call, you can hook into process parsing and replace the rest calls with mocks.
Or you can have a look on org.activiti.engine.test.bpmn.servicetask.WebServiceTaskTest.

regards
Martin