message: test: increase coverage of listener_manager_impl.cc
diff: @@ -957,6 +957,15 @@ filter_chains:
  EXPECT_TRUE(manager_->addOrUpdateListener(parseListenerFromV2Yaml(listener_foo_yaml), "", true));
  }
  +TEST_F(ListenerManagerImplTest, NotSupportedDatagramUds) {
  + ProdListenerComponentFactory real_listener_factory(server_);
  + EXPECT_THROW_WITH_MESSAGE(real_listener_factory.createListenSocket(
  + std::make_shared<Network::Address::PipeInstance>("/foo"),
  + Network::Address::SocketType::Datagram, nullptr, true),
  + EnvoyException,
  + "socket type SocketType::Datagram not supported for pipes");
  +}
  +
  TEST_F(ListenerManagerImplTest, CantBindSocket) {
  InSequence s;
  