@Test @SuppressWarnings("all") public void listOperationsTest() { String nextPageToken = ""; Operation operationsElement = Operation.newBuilder().build(); List<Operation> operations = Arrays.asList(operationsElement); ListOperationsResponse expectedResponse = ListOperationsResponse.newBuilder() .setNextPageToken(nextPageToken) .addAllOperations(operations) .build(); mockOperations.addResponse(expectedResponse); String name = "name3373707"; String filter = "filter-1274492040"; ListOperationsPagedResponse pagedListResponse = client.listOperations(name, filter); List<Operation> resources = Lists.newArrayList(pagedListResponse.iterateAll()); Assert.assertEquals(1, resources.size()); Assert.assertEquals(expectedResponse.getOperationsList().get(0), resources.get(0)); List<GeneratedMessageV3> actualRequests = mockOperations.getRequests(); Assert.assertEquals(1, actualRequests.size()); ListOperationsRequest actualRequest = (ListOperationsRequest) actualRequests.get(0); Assert.assertEquals(name, actualRequest.getName()); Assert.assertEquals(filter, actualRequest.getFilter()); }