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

  MutateGoogleAdsResponse expectedResponse = MutateGoogleAdsResponse.newBuilder().build();
  mockGoogleAdsService.addResponse(expectedResponse);
  String customerId = "customerId-1772061412";
  List<MutateOperation> mutateOperations = new ArrayList<>();
  MutateGoogleAdsResponse actualResponse = client.mutate(customerId, mutateOperations);
  Assert.assertEquals(expectedResponse, actualResponse);
  List<AbstractMessage> actualRequests = mockGoogleAdsService.getRequests();
  Assert.assertEquals(1, actualRequests.size());
  MutateGoogleAdsRequest actualRequest = (MutateGoogleAdsRequest) actualRequests.get(0);
  Assert.assertEquals(customerId, actualRequest.getCustomerId());
  Assert.assertEquals(mutateOperations, actualRequest.getMutateOperationsList());
  Assert.assertTrue(
      channelProvider.isHeaderSent(
          ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
          GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
}