Issue in reusing ActivityInvoker#invokeAsyncActivity for unit tests

[Nadeesh Dilanga]

Hi,
I am trying to reuse the ActivityInvoker#invokeAsyncActivity  to my
activity plugin unit test. And my code is as follows where I am passing
String inputs to inspect an image. But the ActivityInvoker not passing same
inouts to my DockerActivity.
Ex: In ActivityInvoker > referenceService.register(getNameForObject)
returns  "t2:error//testNS?test0/0" after converting my input
"hello-world". I debug the code, it identifies my input as a
ExternalReferenceSPI and that seems to be what converting my value to
"t2:error//testNS?test0/0"".

Any idea why ? If this is not good to reuse for my case, shall I directly
invoke the activity class ?

DockerActivity activity = new DockerActivity(containerConfiguration);
      activity.configure(activityConfiguration);

Map<String,Object> inputs = new HashMap<String,Object>();
      inputs.put(DockerActivity.ACTION, DockerActivity.INSPECT);
      inputs.put(DockerActivity.IN_IMAGE_NAME, IMAGE_NAME);

Map<String, Class<?>> expectedOutputs = new HashMap<String, Class<?>>();
expectedOutputs.put("response_body", T2Reference.class);

Map<String,Object> outputs =
ActivityInvoker.invokeAsyncActivity(activity, inputs,
expectedOutputs);
      System.out.println(outputs.size());