TEST_F(GrpcHealthCheckerImplTest, RemoteCloseBetweenChecks) {
  setupHC();
  cluster_->prioritySet().getMockHostSet(0)->hosts_ = {
      makeTestHost(cluster_->info_, "tcp://127.0.0.1:80", simTime())};

  expectSessionCreate();
  expectHealthcheckStart(0);
  health_checker_->start();

  expectHealthcheckStop(0);
  EXPECT_CALL(*this, onHostStatus(_, HealthTransition::Unchanged));
  respondServiceStatus(0, grpc::health::v1::HealthCheckResponse::SERVING);
  expectHostHealthy(true);

  // Connection closed between checks - nothing happens, just re-create client.
  test_sessions_[0]->client_connection_->raiseEvent(Network::ConnectionEvent::RemoteClose);

  expectClientCreate(0);
  expectHealthcheckStart(0);
  test_sessions_[0]->interval_timer_->invokeCallback();

  expectHealthcheckStop(0);
  // Test host state haven't changed.
  EXPECT_CALL(*this, onHostStatus(_, HealthTransition::Unchanged));
  respondServiceStatus(0, grpc::health::v1::HealthCheckResponse::SERVING);
  expectHostHealthy(true);
}
TEST_F(GrpcHealthCheckerImplTest, RemoteCloseBetweenChecks) {
  setupHC();
  cluster_->prioritySet().getMockHostSet(0)->hosts_ = {
      makeTestHost(cluster_->info_, "tcp://127.0.0.1:80", simTime())};

  expectSessionCreate();
  expectHealthcheckStart(0);
  health_checker_->start();

  expectHealthcheckStop(0);
  EXPECT_CALL(*this, onHostStatus(_, HealthTransition::Unchanged));
  respondServiceStatus(0, grpc::health::v1::HealthCheckResponse::SERVING);
  expectHostHealthy(true);

   
  test_sessions_[0]->client_connection_->raiseEvent(Network::ConnectionEvent::RemoteClose);

  expectClientCreate(0);
  expectHealthcheckStart(0);
  test_sessions_[0]->interval_timer_->invokeCallback();

  expectHealthcheckStop(0);
   
  EXPECT_CALL(*this, onHostStatus(_, HealthTransition::Unchanged));
  respondServiceStatus(0, grpc::health::v1::HealthCheckResponse::SERVING);
  expectHostHealthy(true);
}