diff options
Diffstat (limited to 'webrtc/modules/rtp_rtcp/source/time_util_unittest.cc')
-rw-r--r-- | webrtc/modules/rtp_rtcp/source/time_util_unittest.cc | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/webrtc/modules/rtp_rtcp/source/time_util_unittest.cc b/webrtc/modules/rtp_rtcp/source/time_util_unittest.cc new file mode 100644 index 0000000000..7efb83ccad --- /dev/null +++ b/webrtc/modules/rtp_rtcp/source/time_util_unittest.cc @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ +#include "webrtc/modules/rtp_rtcp/source/time_util.h" + +#include "testing/gtest/include/gtest/gtest.h" + +namespace webrtc { + +TEST(TimeUtilTest, CompactNtp) { + const uint32_t kNtpSec = 0x12345678; + const uint32_t kNtpFrac = 0x23456789; + const NtpTime kNtp(kNtpSec, kNtpFrac); + const uint32_t kNtpMid = 0x56782345; + EXPECT_EQ(kNtpMid, CompactNtp(kNtp)); +} + +TEST(TimeUtilTest, CompactNtpToMs) { + const NtpTime ntp1(0x12345, 0x23456); + const NtpTime ntp2(0x12654, 0x64335); + uint32_t ms_diff = ntp2.ToMs() - ntp1.ToMs(); + uint32_t ntp_diff = CompactNtp(ntp2) - CompactNtp(ntp1); + + uint32_t ntp_to_ms_diff = CompactNtpIntervalToMs(ntp_diff); + + EXPECT_NEAR(ms_diff, ntp_to_ms_diff, 1); +} + +TEST(TimeUtilTest, CompactNtpToMsWithWrap) { + const NtpTime ntp1(0x1ffff, 0x23456); + const NtpTime ntp2(0x20000, 0x64335); + uint32_t ms_diff = ntp2.ToMs() - ntp1.ToMs(); + + // While ntp2 > ntp1, there compact ntp presentation happen to be opposite. + // That shouldn't be a problem as long as unsigned arithmetic is used. + ASSERT_GT(ntp2.ToMs(), ntp1.ToMs()); + ASSERT_LT(CompactNtp(ntp2), CompactNtp(ntp1)); + + uint32_t ntp_diff = CompactNtp(ntp2) - CompactNtp(ntp1); + uint32_t ntp_to_ms_diff = CompactNtpIntervalToMs(ntp_diff); + + EXPECT_NEAR(ms_diff, ntp_to_ms_diff, 1); +} + +TEST(TimeUtilTest, CompactNtpToMsLarge) { + const NtpTime ntp1(0x10000, 0x23456); + const NtpTime ntp2(0x1ffff, 0x64335); + uint32_t ms_diff = ntp2.ToMs() - ntp1.ToMs(); + // Ntp difference close to maximum of ~18 hours should convert correctly too. + ASSERT_GT(ms_diff, 18u * 3600 * 1000); + uint32_t ntp_diff = CompactNtp(ntp2) - CompactNtp(ntp1); + uint32_t ntp_to_ms_diff = CompactNtpIntervalToMs(ntp_diff); + + EXPECT_NEAR(ms_diff, ntp_to_ms_diff, 1); +} +} // namespace webrtc |