TEST_F(QuicServerTransportTest, TestAckStopSending) {
  auto streamId = server->createBidirectionalStream().value();
  server->getNonConstConn().streamManager->getStream(streamId);
  server->stopSending(streamId, GenericApplicationErrorCode::UNKNOWN);
  loopForWrites();
  auto match = findFrameInPacketFunc<QuicSimpleFrame::Type::StopSendingFrame>();

  auto op = findOutstandingPacket(server->getNonConstConn(), match);
  ASSERT_TRUE(op != nullptr);
  PacketNum packetNum = op->packet.header.getPacketSequenceNum();
  AckBlocks acks = {{packetNum, packetNum}};
  auto packet1 = createAckPacket(
      server->getNonConstConn(),
      ++clientNextAppDataPacketNum,
      acks,
      PacketNumberSpace::AppData);
  deliverData(packetToBuf(packet1));
  op = findOutstandingPacket(server->getNonConstConn(), match);
  EXPECT_TRUE(op == nullptr);
}