Add a merely pass-through QuicMultipathSentPacketManager. Protected behind blocked flag FLAGS_quic_…

net/quic/quic_multipath_sent_packet_manager_test.cc

Index: net/quic/quic_multipath_sent_packet_manager_test.cc
diff --git a/net/quic/quic_multipath_sent_packet_manager_test.cc b/net/quic/quic_multipath_sent_packet_manager_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..cac96ea4b9463552c8331e4bd06c2d2af3997a4e
--- /dev/null
+++ b/net/quic/quic_multipath_sent_packet_manager_test.cc
@@ -0,0 +1,384 @@
+#include "net/quic/quic_multipath_sent_packet_manager.h"

[Zhongyi Shi, 2016/07/25 22:30:34]

ditto

+
+#include "net/quic/test_tools/quic_multipath_sent_packet_manager_peer.h"
+#include "net/quic/test_tools/quic_test_utils.h"
+#include "net/test/gtest_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::Return;
+using testing::StrictMock;
+using testing::_;
+
+namespace net {
+namespace test {
+
+namespace {
+
+const QuicPathId kTestPathId1 = 1;
+const QuicPathId kTestPathId2 = 2;
+const QuicPathId kTestPathId3 = 3;
+
+class QuicMultipathSentPacketManagerTest : public testing::Test {
+ public:
+  QuicMultipathSentPacketManagerTest()
+      : manager_0_(new StrictMock<MockSentPacketManager>),
+        manager_1_(new StrictMock<MockSentPacketManager>),
+        manager_2_(new StrictMock<MockSentPacketManager>),
+        multipath_manager_(manager_0_, &delegate_) {
+    // Paths 0 and 1 are active, and path 2 is closing.
+    QuicMultipathSentPacketManagerPeer::AddPathWithActiveState(
+        &multipath_manager_, manager_1_);
+    QuicMultipathSentPacketManagerPeer::AddPathWithCloseState(
+        &multipath_manager_, manager_2_);
+  }
+
+  ~QuicMultipathSentPacketManagerTest() override {}
+
+  MockSentPacketManager* manager_0_;
+  MockSentPacketManager* manager_1_;
+  MockSentPacketManager* manager_2_;
+  QuicMultipathSentPacketManager multipath_manager_;
+  MockClock clock_;
+  StrictMock<MockConnectionCloseDelegate> delegate_;
+};
+
+TEST_F(QuicMultipathSentPacketManagerTest, SetFromConfig) {
+  EXPECT_CALL(*manager_0_, SetFromConfig(_)).Times(1);
+  EXPECT_CALL(*manager_1_, SetFromConfig(_)).Times(1);
+  EXPECT_CALL(*manager_2_, SetFromConfig(_)).Times(1);
+  QuicConfig config;
+  multipath_manager_.SetFromConfig(config);
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, ResumeConnectionState) {
+  EXPECT_CALL(*manager_0_, ResumeConnectionState(_, true));
+  multipath_manager_.ResumeConnectionState(CachedNetworkParameters(), true);
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, SetNumOpenStreams) {
+  size_t kNumStreams = 10;
+  EXPECT_CALL(*manager_0_, SetNumOpenStreams(kNumStreams));
+  EXPECT_CALL(*manager_1_, SetNumOpenStreams(kNumStreams));
+  EXPECT_CALL(*manager_2_, SetNumOpenStreams(kNumStreams));
+  multipath_manager_.SetNumOpenStreams(kNumStreams);
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, SetMaxPacingRate) {
+  QuicBandwidth kBandwidth = QuicBandwidth::FromBitsPerSecond(1000);
+  EXPECT_CALL(*manager_0_, SetMaxPacingRate(kBandwidth));
+  multipath_manager_.SetMaxPacingRate(kBandwidth);
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, SetHandshakeConfirmed) {
+  EXPECT_CALL(*manager_0_, SetHandshakeConfirmed());
+  multipath_manager_.SetHandshakeConfirmed();
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, OnIncomingAck) {
+  QuicAckFrame frame0;
+  QuicAckFrame frame1;
+  frame1.path_id = kTestPathId1;
+  QuicAckFrame frame2;
+  frame2.path_id = kTestPathId2;
+  QuicAckFrame frame3;
+  frame3.path_id = kTestPathId3;
+  EXPECT_CALL(*manager_0_, OnIncomingAck(_, QuicTime::Zero()));
+  EXPECT_CALL(*manager_1_, OnIncomingAck(_, QuicTime::Zero()));
+  EXPECT_CALL(*manager_2_, OnIncomingAck(_, QuicTime::Zero())).Times(0);
+  multipath_manager_.OnIncomingAck(frame0, QuicTime::Zero());
+  multipath_manager_.OnIncomingAck(frame1, QuicTime::Zero());
+  multipath_manager_.OnIncomingAck(frame2, QuicTime::Zero());
+  multipath_manager_.OnIncomingAck(frame3, QuicTime::Zero());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, IsUnacked) {
+  EXPECT_CALL(*manager_0_, IsUnacked(kDefaultPathId, 1)).WillOnce(Return(true));
+  EXPECT_CALL(*manager_1_, IsUnacked(kTestPathId1, 2)).WillOnce(Return(false));
+  EXPECT_CALL(*manager_2_, IsUnacked(kTestPathId2, 3)).WillOnce(Return(true));
+  EXPECT_TRUE(multipath_manager_.IsUnacked(kDefaultPathId, 1));
+  EXPECT_FALSE(multipath_manager_.IsUnacked(kTestPathId1, 2));
+  EXPECT_TRUE(multipath_manager_.IsUnacked(kTestPathId2, 3));
+  /*
+  EXPECT_DFATAL(multipath_manager_.IsUnacked(kTestPathId3, 4), "");
+  */
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, HasRetransmittableFrames) {
+  EXPECT_CALL(*manager_0_, HasRetransmittableFrames(kDefaultPathId, 1))
+      .WillOnce(Return(true));
+  EXPECT_CALL(*manager_1_, HasRetransmittableFrames(kTestPathId1, 2))
+      .WillOnce(Return(false));
+  EXPECT_CALL(*manager_2_, HasRetransmittableFrames(kTestPathId2, 3))
+      .WillOnce(Return(true));
+  EXPECT_TRUE(multipath_manager_.HasRetransmittableFrames(kDefaultPathId, 1));
+  EXPECT_FALSE(multipath_manager_.HasRetransmittableFrames(kTestPathId1, 2));
+  EXPECT_TRUE(multipath_manager_.HasRetransmittableFrames(kTestPathId2, 3));
+  /*
+  EXPECT_DFATAL(multipath_manager_.HasRetransmittableFrames(kTestPathId3, 4),
+                "");
+  */
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, RetransmitUnackedPackets) {
+  EXPECT_CALL(*manager_0_, RetransmitUnackedPackets(HANDSHAKE_RETRANSMISSION));
+  multipath_manager_.RetransmitUnackedPackets(HANDSHAKE_RETRANSMISSION);
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, MaybeRetransmitTailLossProbe) {
+  EXPECT_CALL(*manager_0_, MaybeRetransmitTailLossProbe())
+      .WillOnce(Return(false));
+  EXPECT_CALL(*manager_1_, MaybeRetransmitTailLossProbe())
+      .WillOnce(Return(false));
+  EXPECT_FALSE(multipath_manager_.MaybeRetransmitTailLossProbe());
+  EXPECT_CALL(*manager_0_, MaybeRetransmitTailLossProbe())
+      .WillOnce(Return(false));
+  EXPECT_CALL(*manager_1_, MaybeRetransmitTailLossProbe())
+      .WillOnce(Return(true));
+  EXPECT_TRUE(multipath_manager_.MaybeRetransmitTailLossProbe());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, NeuterUnencryptedPackets) {
+  EXPECT_CALL(*manager_0_, NeuterUnencryptedPackets());
+  multipath_manager_.NeuterUnencryptedPackets();
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, HasPendingRetransmissions) {
+  EXPECT_CALL(*manager_0_, HasPendingRetransmissions()).WillOnce(Return(true));
+  EXPECT_TRUE(multipath_manager_.HasPendingRetransmissions());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, NextPendingRetransmission) {
+  SerializedPacket packet(kDefaultPathId, 1, PACKET_6BYTE_PACKET_NUMBER,
+                          nullptr, 1250, 0u, false, false);
+  PendingRetransmission retransmission(
+      packet.path_id, packet.packet_number, LOSS_RETRANSMISSION,
+      packet.retransmittable_frames, packet.has_crypto_handshake,
+      packet.num_padding_bytes, packet.encryption_level,
+      packet.packet_number_length);
+  EXPECT_CALL(*manager_0_, NextPendingRetransmission())
+      .WillOnce(Return(retransmission));
+  multipath_manager_.NextPendingRetransmission();
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, HasUnackedPackets) {
+  EXPECT_CALL(*manager_0_, HasUnackedPackets()).WillOnce(Return(false));
+  EXPECT_CALL(*manager_1_, HasUnackedPackets()).WillOnce(Return(false));
+  EXPECT_CALL(*manager_2_, HasUnackedPackets()).Times(0);
+  EXPECT_FALSE(multipath_manager_.HasUnackedPackets());
+  EXPECT_CALL(*manager_0_, HasUnackedPackets()).WillOnce(Return(false));
+  EXPECT_CALL(*manager_1_, HasUnackedPackets()).WillOnce(Return(true));
+  EXPECT_TRUE(multipath_manager_.HasUnackedPackets());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, GetLeastUnacked) {
+  EXPECT_CALL(*manager_0_, GetLeastUnacked(kDefaultPathId)).WillOnce(Return(2));
+  EXPECT_CALL(*manager_1_, GetLeastUnacked(kTestPathId1)).WillOnce(Return(3));
+  EXPECT_CALL(*manager_2_, GetLeastUnacked(kTestPathId2)).WillOnce(Return(4));
+  EXPECT_EQ(2u, multipath_manager_.GetLeastUnacked(kDefaultPathId));
+  EXPECT_EQ(3u, multipath_manager_.GetLeastUnacked(kTestPathId1));
+  EXPECT_EQ(4u, multipath_manager_.GetLeastUnacked(kTestPathId2));
+  EXPECT_EQ(0u, multipath_manager_.GetLeastUnacked(kTestPathId3));
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, OnPacketSent) {
+  SerializedPacket packet0(kDefaultPathId, 1, PACKET_6BYTE_PACKET_NUMBER,
+                           nullptr, 1250, 0u, false, false);
+  SerializedPacket packet1(kTestPathId1, 1, PACKET_6BYTE_PACKET_NUMBER, nullptr,
+                           1250, 0u, false, false);
+  SerializedPacket packet2(kTestPathId2, 1, PACKET_6BYTE_PACKET_NUMBER, nullptr,
+                           1250, 0u, false, false);
+  SerializedPacket packet3(kTestPathId3, 1, PACKET_6BYTE_PACKET_NUMBER, nullptr,
+                           1250, 0u, false, false);
+  EXPECT_CALL(*manager_0_,
+              OnPacketSent(&packet0, kInvalidPathId, 0, clock_.Now(),
+                           NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA));
+  multipath_manager_.OnPacketSent(&packet0, kInvalidPathId, 0, clock_.Now(),
+                                  NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA);
+  EXPECT_CALL(*manager_1_,
+              OnPacketSent(&packet1, kInvalidPathId, 0, clock_.Now(),
+                           NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA));
+  multipath_manager_.OnPacketSent(&packet1, kInvalidPathId, 0, clock_.Now(),
+                                  NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA);
+  EXPECT_CALL(*manager_2_, OnPacketSent(_, _, _, _, _, _)).Times(0);
+  EXPECT_CALL(delegate_,
+              OnUnrecoverableError(QUIC_MULTIPATH_PATH_NOT_ACTIVE, _, _));
+  /*
+  EXPECT_DFATAL(multipath_manager_.OnPacketSent(
+                    &packet2, kInvalidPathId, 0, clock_.Now(),
+                    NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA),
+                "");
+  */
+  EXPECT_CALL(delegate_,
+              OnUnrecoverableError(QUIC_MULTIPATH_PATH_DOES_NOT_EXIST, _, _));
+  /*
+  EXPECT_DFATAL(multipath_manager_.OnPacketSent(
+                    &packet3, kInvalidPathId, 0, clock_.Now(),
+                    NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA),
+                "");
+  */
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, OnRetransmissionTimeout) {
+  QuicTime time0 = clock_.Now() + QuicTime::Delta::FromMilliseconds(50);
+  QuicTime time1 = clock_.Now() + QuicTime::Delta::FromMilliseconds(100);
+  EXPECT_CALL(*manager_0_, GetRetransmissionTime()).WillOnce(Return(time0));
+  EXPECT_CALL(*manager_1_, GetRetransmissionTime()).WillOnce(Return(time1));
+  EXPECT_CALL(*manager_0_, OnRetransmissionTimeout());
+  multipath_manager_.OnRetransmissionTimeout();
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, TimeUntilSend) {
+  QuicPathId path_id = kInvalidPathId;
+  EXPECT_CALL(*manager_0_,
+              TimeUntilSend(clock_.Now(), HAS_RETRANSMITTABLE_DATA, &path_id))
+      .WillOnce(Return(QuicTime::Delta::FromMilliseconds(200)));
+  EXPECT_CALL(*manager_1_,
+              TimeUntilSend(clock_.Now(), HAS_RETRANSMITTABLE_DATA, &path_id))
+      .WillOnce(Return(QuicTime::Delta::FromMilliseconds(100)));
+  EXPECT_EQ(QuicTime::Delta::FromMilliseconds(100),
+            multipath_manager_.TimeUntilSend(
+                clock_.Now(), HAS_RETRANSMITTABLE_DATA, &path_id));
+  EXPECT_EQ(kTestPathId1, path_id);
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, GetRetransmissionTime) {
+  QuicTime time0 = clock_.Now() + QuicTime::Delta::FromMilliseconds(200);
+  QuicTime time1 = clock_.Now() + QuicTime::Delta::FromMilliseconds(100);
+  EXPECT_CALL(*manager_0_, GetRetransmissionTime()).WillOnce(Return(time0));
+  EXPECT_CALL(*manager_1_, GetRetransmissionTime()).WillOnce(Return(time1));
+  EXPECT_EQ(time1, multipath_manager_.GetRetransmissionTime());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, GetRttStats) {
+  EXPECT_CALL(*manager_0_, GetRttStats());
+  multipath_manager_.GetRttStats();
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, BandwidthEstimate) {
+  QuicBandwidth bandwidth = QuicBandwidth::FromKBitsPerSecond(100);
+  EXPECT_CALL(*manager_0_, BandwidthEstimate()).WillOnce(Return(bandwidth));
+  EXPECT_EQ(bandwidth, multipath_manager_.BandwidthEstimate());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, GetCongestionWindowInTcpMss) {
+  EXPECT_CALL(*manager_0_, GetCongestionWindowInTcpMss()).WillOnce(Return(100));
+  EXPECT_EQ(100u, multipath_manager_.GetCongestionWindowInTcpMss());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, EstimateMaxPacketsInFlight) {
+  QuicByteCount max_packet_length = 1250;
+  EXPECT_CALL(*manager_0_, EstimateMaxPacketsInFlight(max_packet_length))
+      .WillOnce(Return(100));
+  EXPECT_CALL(*manager_1_, EstimateMaxPacketsInFlight(max_packet_length))
+      .WillOnce(Return(200));
+  EXPECT_CALL(*manager_2_, EstimateMaxPacketsInFlight(max_packet_length))
+      .WillOnce(Return(300));
+  EXPECT_EQ(300u,
+            multipath_manager_.EstimateMaxPacketsInFlight(max_packet_length));
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, GetSlowStartThresholdInTcpMss) {
+  EXPECT_CALL(*manager_0_, GetSlowStartThresholdInTcpMss())
+      .WillOnce(Return(100));
+  EXPECT_EQ(100u, multipath_manager_.GetSlowStartThresholdInTcpMss());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, CancelRetransmissionsForStream) {
+  EXPECT_CALL(*manager_0_, CancelRetransmissionsForStream(1));
+  EXPECT_CALL(*manager_1_, CancelRetransmissionsForStream(1));
+  EXPECT_CALL(*manager_2_, CancelRetransmissionsForStream(1));
+  multipath_manager_.CancelRetransmissionsForStream(1);
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, OnConnectionMigration) {
+  EXPECT_CALL(*manager_0_, OnConnectionMigration(kDefaultPathId, PORT_CHANGE));
+  EXPECT_CALL(*manager_2_, OnConnectionMigration(_, _)).Times(0);
+  multipath_manager_.OnConnectionMigration(kDefaultPathId, PORT_CHANGE);
+  EXPECT_CALL(delegate_,
+              OnUnrecoverableError(QUIC_MULTIPATH_PATH_NOT_ACTIVE, _, _));
+  /*
+  EXPECT_DFATAL(
+      multipath_manager_.OnConnectionMigration(kTestPathId2, PORT_CHANGE), "");
+  */
+  EXPECT_CALL(delegate_,
+              OnUnrecoverableError(QUIC_MULTIPATH_PATH_DOES_NOT_EXIST, _, _));
+  multipath_manager_.OnConnectionMigration(kTestPathId3, PORT_CHANGE);
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, IsHandshakeConfirmed) {
+  EXPECT_CALL(*manager_0_, IsHandshakeConfirmed()).WillOnce(Return(true));
+  EXPECT_TRUE(multipath_manager_.IsHandshakeConfirmed());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, SetDebugDelegate) {
+  EXPECT_CALL(*manager_0_, SetDebugDelegate(nullptr));
+  EXPECT_CALL(*manager_1_, SetDebugDelegate(nullptr));
+  EXPECT_CALL(*manager_2_, SetDebugDelegate(nullptr));
+  multipath_manager_.SetDebugDelegate(nullptr);
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, GetLargestObserved) {
+  EXPECT_CALL(*manager_0_, GetLargestObserved(kDefaultPathId))
+      .WillOnce(Return(10));
+  EXPECT_CALL(*manager_1_, GetLargestObserved(kTestPathId1))
+      .WillOnce(Return(11));
+  EXPECT_CALL(*manager_2_, GetLargestObserved(kTestPathId2))
+      .WillOnce(Return(12));
+  EXPECT_EQ(10u, multipath_manager_.GetLargestObserved(kDefaultPathId));
+  EXPECT_EQ(11u, multipath_manager_.GetLargestObserved(kTestPathId1));
+  EXPECT_EQ(12u, multipath_manager_.GetLargestObserved(kTestPathId2));
+  EXPECT_DFATAL(multipath_manager_.GetLargestObserved(kTestPathId3), "");
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, GetLargestSentPacket) {
+  EXPECT_CALL(*manager_0_, GetLargestSentPacket(kDefaultPathId))
+      .WillOnce(Return(10));
+  EXPECT_CALL(*manager_1_, GetLargestSentPacket(kTestPathId1))
+      .WillOnce(Return(11));
+  EXPECT_CALL(*manager_2_, GetLargestSentPacket(kTestPathId2))
+      .WillOnce(Return(12));
+  EXPECT_EQ(10u, multipath_manager_.GetLargestSentPacket(kDefaultPathId));
+  EXPECT_EQ(11u, multipath_manager_.GetLargestSentPacket(kTestPathId1));
+  EXPECT_EQ(12u, multipath_manager_.GetLargestSentPacket(kTestPathId2));
+  EXPECT_EQ(0u, multipath_manager_.GetLargestSentPacket(kTestPathId3));
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, GetLeastPacketAwaitedByPeer) {
+  EXPECT_CALL(*manager_0_, GetLeastPacketAwaitedByPeer(kDefaultPathId))
+      .WillOnce(Return(10));
+  EXPECT_CALL(*manager_1_, GetLeastPacketAwaitedByPeer(kTestPathId1))
+      .WillOnce(Return(11));
+  EXPECT_CALL(*manager_2_, GetLeastPacketAwaitedByPeer(kTestPathId2))
+      .WillOnce(Return(12));
+  EXPECT_EQ(10u,
+            multipath_manager_.GetLeastPacketAwaitedByPeer(kDefaultPathId));
+  EXPECT_EQ(11u, multipath_manager_.GetLeastPacketAwaitedByPeer(kTestPathId1));
+  EXPECT_EQ(12u, multipath_manager_.GetLeastPacketAwaitedByPeer(kTestPathId2));
+  EXPECT_EQ(0u, multipath_manager_.GetLeastPacketAwaitedByPeer(kTestPathId3));
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, SetNetworkChangeVisitor) {
+  EXPECT_CALL(*manager_0_, SetNetworkChangeVisitor(nullptr));
+  EXPECT_CALL(*manager_1_, SetNetworkChangeVisitor(nullptr));
+  multipath_manager_.SetNetworkChangeVisitor(nullptr);
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, InSlowStart) {
+  EXPECT_CALL(*manager_0_, InSlowStart()).WillOnce(Return(true));
+  EXPECT_TRUE(multipath_manager_.InSlowStart());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, GetConsecutiveRtoCount) {
+  EXPECT_CALL(*manager_0_, GetConsecutiveRtoCount()).WillOnce(Return(4));
+  EXPECT_EQ(4u, multipath_manager_.GetConsecutiveRtoCount());
+}
+
+TEST_F(QuicMultipathSentPacketManagerTest, GetConsecutiveTlpCount) {
+  EXPECT_CALL(*manager_0_, GetConsecutiveTlpCount()).WillOnce(Return(3));
+  EXPECT_EQ(3u, multipath_manager_.GetConsecutiveTlpCount());
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace net