// once (i.e., on the main function side) in running distributed functions.
// This test creates a cluster with two workers, create a variable on the
// second worker, and run a distributed function (VariableAddFunction) whose ops
// span the local and remote workers. If the graph optimization pass is executed
// on both the main function side and the component function side, an error will

  }

  return single_host_server_def;
}

tensorflow::ServerDef GetClusterServerDef(const string& worker_job_name,
                                          int num_workers) {
  tensorflow::ServerDef server_def = GetServerDef(worker_job_name, num_workers);
  tensorflow::ClusterDef* cluster_def = server_def.mutable_cluster();

  // Add a client.
  tensorflow::JobDef* job_def2 = cluster_def->add_job();

  FileSystem* fs = nullptr;
  Status s = env_->GetFileSystemForFile(generic_path, &fs);
  if (fs == nullptr || !s.ok())
    GTEST_SKIP() << "No filesystem registered: " << s;

  // First, test some interesting corner cases concerning empty URIs
  if (GetParam().empty()) {
    EXPECT_EQ(fs->TranslateName(""), "");
    EXPECT_EQ(fs->TranslateName("/"), "/");
    EXPECT_EQ(fs->TranslateName("//"), "/");