@Test
@SuppressWarnings("all")
public void mutateExtensionFeedItemsTest() {

  MutateExtensionFeedItemsResponse expectedResponse =
      MutateExtensionFeedItemsResponse.newBuilder().build();
  mockExtensionFeedItemService.addResponse(expectedResponse);
  String customerId = "customerId-1772061412";
  List<ExtensionFeedItemOperation> operations = new ArrayList<>();
  MutateExtensionFeedItemsResponse actualResponse =
      client.mutateExtensionFeedItems(customerId, operations);
  Assert.assertEquals(expectedResponse, actualResponse);
  List<AbstractMessage> actualRequests = mockExtensionFeedItemService.getRequests();
  Assert.assertEquals(1, actualRequests.size());
  MutateExtensionFeedItemsRequest actualRequest =
      (MutateExtensionFeedItemsRequest) actualRequests.get(0);
  Assert.assertEquals(customerId, actualRequest.getCustomerId());
  Assert.assertEquals(operations, actualRequest.getOperationsList());
  Assert.assertTrue(
      channelProvider.isHeaderSent(
          ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
          GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
}