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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /third_party/libwebrtc/net/dcsctp/common/sequence_numbers_test.cc | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/net/dcsctp/common/sequence_numbers_test.cc')
-rw-r--r-- | third_party/libwebrtc/net/dcsctp/common/sequence_numbers_test.cc | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/common/sequence_numbers_test.cc b/third_party/libwebrtc/net/dcsctp/common/sequence_numbers_test.cc new file mode 100644 index 0000000000..c4842f089e --- /dev/null +++ b/third_party/libwebrtc/net/dcsctp/common/sequence_numbers_test.cc @@ -0,0 +1,202 @@ +/* + * Copyright (c) 2021 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 "net/dcsctp/common/sequence_numbers.h" + +#include "test/gmock.h" + +namespace dcsctp { +namespace { + +using Wrapped = webrtc::StrongAlias<class WrappedTag, uint16_t>; +using TestSequence = UnwrappedSequenceNumber<Wrapped>; + +TEST(SequenceNumbersTest, SimpleUnwrapping) { + TestSequence::Unwrapper unwrapper; + + TestSequence s0 = unwrapper.Unwrap(Wrapped(0)); + TestSequence s1 = unwrapper.Unwrap(Wrapped(1)); + TestSequence s2 = unwrapper.Unwrap(Wrapped(2)); + TestSequence s3 = unwrapper.Unwrap(Wrapped(3)); + + EXPECT_LT(s0, s1); + EXPECT_LT(s0, s2); + EXPECT_LT(s0, s3); + EXPECT_LT(s1, s2); + EXPECT_LT(s1, s3); + EXPECT_LT(s2, s3); + + EXPECT_EQ(TestSequence::Difference(s1, s0), 1); + EXPECT_EQ(TestSequence::Difference(s2, s0), 2); + EXPECT_EQ(TestSequence::Difference(s3, s0), 3); + + EXPECT_GT(s1, s0); + EXPECT_GT(s2, s0); + EXPECT_GT(s3, s0); + EXPECT_GT(s2, s1); + EXPECT_GT(s3, s1); + EXPECT_GT(s3, s2); + + s0.Increment(); + EXPECT_EQ(s0, s1); + s1.Increment(); + EXPECT_EQ(s1, s2); + s2.Increment(); + EXPECT_EQ(s2, s3); + + EXPECT_EQ(TestSequence::AddTo(s0, 2), s3); +} + +TEST(SequenceNumbersTest, MidValueUnwrapping) { + TestSequence::Unwrapper unwrapper; + + TestSequence s0 = unwrapper.Unwrap(Wrapped(0x7FFE)); + TestSequence s1 = unwrapper.Unwrap(Wrapped(0x7FFF)); + TestSequence s2 = unwrapper.Unwrap(Wrapped(0x8000)); + TestSequence s3 = unwrapper.Unwrap(Wrapped(0x8001)); + + EXPECT_LT(s0, s1); + EXPECT_LT(s0, s2); + EXPECT_LT(s0, s3); + EXPECT_LT(s1, s2); + EXPECT_LT(s1, s3); + EXPECT_LT(s2, s3); + + EXPECT_EQ(TestSequence::Difference(s1, s0), 1); + EXPECT_EQ(TestSequence::Difference(s2, s0), 2); + EXPECT_EQ(TestSequence::Difference(s3, s0), 3); + + EXPECT_GT(s1, s0); + EXPECT_GT(s2, s0); + EXPECT_GT(s3, s0); + EXPECT_GT(s2, s1); + EXPECT_GT(s3, s1); + EXPECT_GT(s3, s2); + + s0.Increment(); + EXPECT_EQ(s0, s1); + s1.Increment(); + EXPECT_EQ(s1, s2); + s2.Increment(); + EXPECT_EQ(s2, s3); + + EXPECT_EQ(TestSequence::AddTo(s0, 2), s3); +} + +TEST(SequenceNumbersTest, WrappedUnwrapping) { + TestSequence::Unwrapper unwrapper; + + TestSequence s0 = unwrapper.Unwrap(Wrapped(0xFFFE)); + TestSequence s1 = unwrapper.Unwrap(Wrapped(0xFFFF)); + TestSequence s2 = unwrapper.Unwrap(Wrapped(0x0000)); + TestSequence s3 = unwrapper.Unwrap(Wrapped(0x0001)); + + EXPECT_LT(s0, s1); + EXPECT_LT(s0, s2); + EXPECT_LT(s0, s3); + EXPECT_LT(s1, s2); + EXPECT_LT(s1, s3); + EXPECT_LT(s2, s3); + + EXPECT_EQ(TestSequence::Difference(s1, s0), 1); + EXPECT_EQ(TestSequence::Difference(s2, s0), 2); + EXPECT_EQ(TestSequence::Difference(s3, s0), 3); + + EXPECT_GT(s1, s0); + EXPECT_GT(s2, s0); + EXPECT_GT(s3, s0); + EXPECT_GT(s2, s1); + EXPECT_GT(s3, s1); + EXPECT_GT(s3, s2); + + s0.Increment(); + EXPECT_EQ(s0, s1); + s1.Increment(); + EXPECT_EQ(s1, s2); + s2.Increment(); + EXPECT_EQ(s2, s3); + + EXPECT_EQ(TestSequence::AddTo(s0, 2), s3); +} + +TEST(SequenceNumbersTest, WrapAroundAFewTimes) { + TestSequence::Unwrapper unwrapper; + + TestSequence s0 = unwrapper.Unwrap(Wrapped(0)); + TestSequence prev = s0; + + for (uint32_t i = 1; i < 65536 * 3; i++) { + uint16_t wrapped = static_cast<uint16_t>(i); + TestSequence si = unwrapper.Unwrap(Wrapped(wrapped)); + + EXPECT_LT(s0, si); + EXPECT_LT(prev, si); + prev = si; + } +} + +TEST(SequenceNumbersTest, IncrementIsSameAsWrapped) { + TestSequence::Unwrapper unwrapper; + + TestSequence s0 = unwrapper.Unwrap(Wrapped(0)); + + for (uint32_t i = 1; i < 65536 * 2; i++) { + uint16_t wrapped = static_cast<uint16_t>(i); + TestSequence si = unwrapper.Unwrap(Wrapped(wrapped)); + + s0.Increment(); + EXPECT_EQ(s0, si); + } +} + +TEST(SequenceNumbersTest, UnwrappingLargerNumberIsAlwaysLarger) { + TestSequence::Unwrapper unwrapper; + + for (uint32_t i = 1; i < 65536 * 2; i++) { + uint16_t wrapped = static_cast<uint16_t>(i); + TestSequence si = unwrapper.Unwrap(Wrapped(wrapped)); + + EXPECT_GT(unwrapper.Unwrap(Wrapped(wrapped + 1)), si); + EXPECT_GT(unwrapper.Unwrap(Wrapped(wrapped + 5)), si); + EXPECT_GT(unwrapper.Unwrap(Wrapped(wrapped + 10)), si); + EXPECT_GT(unwrapper.Unwrap(Wrapped(wrapped + 100)), si); + } +} + +TEST(SequenceNumbersTest, UnwrappingSmallerNumberIsAlwaysSmaller) { + TestSequence::Unwrapper unwrapper; + + for (uint32_t i = 1; i < 65536 * 2; i++) { + uint16_t wrapped = static_cast<uint16_t>(i); + TestSequence si = unwrapper.Unwrap(Wrapped(wrapped)); + + EXPECT_LT(unwrapper.Unwrap(Wrapped(wrapped - 1)), si); + EXPECT_LT(unwrapper.Unwrap(Wrapped(wrapped - 5)), si); + EXPECT_LT(unwrapper.Unwrap(Wrapped(wrapped - 10)), si); + EXPECT_LT(unwrapper.Unwrap(Wrapped(wrapped - 100)), si); + } +} + +TEST(SequenceNumbersTest, DifferenceIsAbsolute) { + TestSequence::Unwrapper unwrapper; + + TestSequence this_value = unwrapper.Unwrap(Wrapped(10)); + TestSequence other_value = TestSequence::AddTo(this_value, 100); + + EXPECT_EQ(TestSequence::Difference(this_value, other_value), 100); + EXPECT_EQ(TestSequence::Difference(other_value, this_value), 100); + + TestSequence minus_value = TestSequence::AddTo(this_value, -100); + + EXPECT_EQ(TestSequence::Difference(this_value, minus_value), 100); + EXPECT_EQ(TestSequence::Difference(minus_value, this_value), 100); +} + +} // namespace +} // namespace dcsctp |