1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "media/cast/net/rtp/packet_storage.h"
11 #include "base/test/simple_test_tick_clock.h"
12 #include "base/time/time.h"
13 #include "testing/gmock/include/gmock/gmock.h"
18 static size_t kStoredFrames = 10;
20 // Generate |number_of_frames| and store into |*storage|.
21 // First frame has 1 packet, second frame has 2 packets, etc.
22 static void StoreFrames(size_t number_of_frames,
23 uint32 first_frame_id,
24 PacketStorage* storage) {
25 const base::TimeTicks kTicks;
27 for (size_t i = 0; i < number_of_frames; ++i) {
28 SendPacketVector packets;
29 // First frame has 1 packet, second frame has 2 packets, etc.
30 const size_t kNumberOfPackets = i + 1;
31 for (size_t j = 0; j < kNumberOfPackets; ++j) {
32 Packet test_packet(1, 0);
35 PacedPacketSender::MakePacketKey(kTicks, kSsrc, j),
36 new base::RefCountedData<Packet>(test_packet)));
38 storage->StoreFrame(first_frame_id, packets);
43 TEST(PacketStorageTest, NumberOfStoredFrames) {
44 PacketStorage storage(kStoredFrames);
47 frame_id = ~frame_id; // The maximum value of uint32.
48 StoreFrames(200, frame_id, &storage);
49 EXPECT_EQ(kStoredFrames, storage.GetNumberOfStoredFrames());
52 TEST(PacketStorageTest, GetFrameWrapAround8bits) {
53 PacketStorage storage(kStoredFrames);
55 const uint32 kFirstFrameId = 250;
56 StoreFrames(kStoredFrames, kFirstFrameId, &storage);
57 EXPECT_EQ(kStoredFrames, storage.GetNumberOfStoredFrames());
59 // Expect we get the correct frames by looking at the number of
61 uint32 frame_id = kFirstFrameId;
62 for (size_t i = 0; i < kStoredFrames; ++i) {
63 ASSERT_TRUE(storage.GetFrame8(frame_id));
64 EXPECT_EQ(i + 1, storage.GetFrame8(frame_id)->size());
69 TEST(PacketStorageTest, GetFrameWrapAround32bits) {
70 PacketStorage storage(kStoredFrames);
72 // First frame ID is close to the maximum value of uint32.
73 uint32 first_frame_id = 0xffffffff - 5;
74 StoreFrames(kStoredFrames, first_frame_id, &storage);
75 EXPECT_EQ(kStoredFrames, storage.GetNumberOfStoredFrames());
77 // Expect we get the correct frames by looking at the number of
79 uint32 frame_id = first_frame_id;
80 for (size_t i = 0; i < kStoredFrames; ++i) {
81 ASSERT_TRUE(storage.GetFrame8(frame_id));
82 EXPECT_EQ(i + 1, storage.GetFrame8(frame_id)->size());
87 TEST(PacketStorageTest, GetFrameTooOld) {
88 PacketStorage storage(kStoredFrames);
90 // First frame ID is close to the maximum value of uint32.
91 uint32 first_frame_id = 0xffffffff - 5;
93 // Store two times the capacity.
94 StoreFrames(2 * kStoredFrames, first_frame_id, &storage);
95 EXPECT_EQ(kStoredFrames, storage.GetNumberOfStoredFrames());
97 uint32 frame_id = first_frame_id;
98 // Old frames are evicted.
99 for (size_t i = 0; i < kStoredFrames; ++i) {
100 EXPECT_FALSE(storage.GetFrame8(frame_id));
103 // Check recent frames are there.
104 for (size_t i = 0; i < kStoredFrames; ++i) {
105 ASSERT_TRUE(storage.GetFrame8(frame_id));
106 EXPECT_EQ(kStoredFrames + i + 1,
107 storage.GetFrame8(frame_id)->size());