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1 // Copyright 2013 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. | |
4 | |
5 #include <gtest/gtest.h> | |
6 #include "media/cast/transport/cast_transport_defines.h" | |
7 | |
8 namespace media { | |
9 namespace cast { | |
10 namespace transport { | |
11 | |
12 class FrameIdWrapHelperTest : public ::testing::Test { | |
13 protected: | |
14 FrameIdWrapHelperTest() {} | |
15 virtual ~FrameIdWrapHelperTest() {} | |
16 | |
17 FrameIdWrapHelper frame_id_wrap_helper_; | |
18 | |
19 DISALLOW_COPY_AND_ASSIGN(FrameIdWrapHelperTest); | |
20 }; | |
21 | |
22 TEST_F(FrameIdWrapHelperTest, FirstFrame) { | |
23 EXPECT_EQ(kStartFrameId, frame_id_wrap_helper_.MapTo32bitsFrameId(255u)); | |
24 } | |
25 | |
26 TEST_F(FrameIdWrapHelperTest, Rollover) { | |
27 uint32 new_frame_id = 0u; | |
28 for (int i = 0; i <= 256; ++i) { | |
29 new_frame_id = | |
30 frame_id_wrap_helper_.MapTo32bitsFrameId(static_cast<uint8>(i)); | |
31 } | |
32 EXPECT_EQ(256u, new_frame_id); | |
33 } | |
34 | |
35 TEST_F(FrameIdWrapHelperTest, OutOfOrder) { | |
36 uint32 new_frame_id = 0u; | |
37 for (int i = 0; i < 255; ++i) { | |
38 new_frame_id = | |
39 frame_id_wrap_helper_.MapTo32bitsFrameId(static_cast<uint8>(i)); | |
40 } | |
41 EXPECT_EQ(254u, new_frame_id); | |
42 new_frame_id = frame_id_wrap_helper_.MapTo32bitsFrameId(0u); | |
43 EXPECT_EQ(256u, new_frame_id); | |
44 new_frame_id = frame_id_wrap_helper_.MapTo32bitsFrameId(255u); | |
45 EXPECT_EQ(255u, new_frame_id); | |
46 new_frame_id = frame_id_wrap_helper_.MapTo32bitsFrameId(1u); | |
47 EXPECT_EQ(257u, new_frame_id); | |
48 } | |
49 | |
50 } // namespace transport | |
51 } // namespace cast | |
52 } // namespace media | |
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