}

TEST(CloneConstantsForBetterClusteringTest, HostConstantPlacedOnCpu) {
  Scope root = Scope::NewRootScope().ExitOnError();
  Scope on_gpu = root.WithAssignedDevice(kGPU).WithDevice(kGPU);
  Scope on_cpu = root.WithAssignedDevice(kCPU).WithDevice(kCPU);

  Output in0 = ops::Placeholder(on_gpu.WithOpName("in0"), DT_FLOAT);
  Output in1 = ops::Placeholder(on_gpu.WithOpName("in1"), DT_FLOAT);

  }

  TestListener* listener() const { return listener_; }

 private:
  TestListener* listener_;
};

GraphDef CreateGraphDef() {
  Scope root = Scope::NewRootScope().ExitOnError().WithAssignedDevice(
      "/job:localhost/replica:0/task:0/device:CPU:0");
  Output a = ops::Placeholder(root.WithOpName("A"), DT_FLOAT);
  for (int i = 0; i < 5; i++) {
    a = ops::MatMul(root.WithOpName(absl::StrCat("matmul_", i)), a, a);