### Question:
AuditFilter implements Filter { public JsonValue getActionSuccessDetail(ActionRequest request, ActionResponse response) { return null; } @Inject  AuditFilter(@Named("frRest") Debug debug, CrestAuditorFactory crestAuditorFactory); @Override Promise<ActionResponse, ResourceException> filterAction(Context context, ActionRequest request,
            RequestHandler next); @Override Promise<ResourceResponse, ResourceException> filterCreate(Context context, CreateRequest request,
            RequestHandler next); @Override Promise<ResourceResponse, ResourceException> filterDelete(Context context, DeleteRequest request,
            RequestHandler next); @Override Promise<ResourceResponse, ResourceException> filterPatch(Context context, PatchRequest request,
            RequestHandler next); @Override Promise<QueryResponse, ResourceException> filterQuery(Context context, QueryRequest request,
            QueryResourceHandler handler, RequestHandler next); @Override Promise<ResourceResponse, ResourceException> filterRead(Context context, ReadRequest request,
            RequestHandler next); @Override Promise<ResourceResponse, ResourceException> filterUpdate(Context context, UpdateRequest request,
            RequestHandler next); JsonValue getCreateSuccessDetail(CreateRequest request, ResourceResponse response); JsonValue getReadSuccessDetail(ReadRequest request, ResourceResponse response); JsonValue getUpdateSuccessDetail(UpdateRequest request, ResourceResponse response); JsonValue getDeleteSuccessDetail(DeleteRequest request, ResourceResponse response); JsonValue getPatchSuccessDetail(PatchRequest request, ResourceResponse response); JsonValue getActionSuccessDetail(ActionRequest request, ActionResponse response); JsonValue getQuerySuccessDetail(QueryRequest request, QueryResponse response);  }### Answer:
@Test public void shouldReturnNullForActionSuccess() { ActionRequest actionRequest = mock(ActionRequest.class); ActionResponse actionResponse = mock(ActionResponse.class); JsonValue filterResponse = auditFilter.getActionSuccessDetail(actionRequest, actionResponse); assertThat(filterResponse).isEqualTo(null); }