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Diffstat (limited to 'third_party/libwebrtc/net/dcsctp/common/math_test.cc')
| -rw-r--r-- | third_party/libwebrtc/net/dcsctp/common/math_test.cc | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/common/math_test.cc b/third_party/libwebrtc/net/dcsctp/common/math_test.cc new file mode 100644 index 0000000000..f95dfbdb55 --- /dev/null +++ b/third_party/libwebrtc/net/dcsctp/common/math_test.cc @@ -0,0 +1,116 @@ +/* + * 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/math.h" + +#include "test/gmock.h" + +namespace dcsctp { +namespace { + +TEST(MathUtilTest, CanRoundUpTo4) { + // Signed numbers + EXPECT_EQ(RoundUpTo4(static_cast<int>(-5)), -4); + EXPECT_EQ(RoundUpTo4(static_cast<int>(-4)), -4); + EXPECT_EQ(RoundUpTo4(static_cast<int>(-3)), 0); + EXPECT_EQ(RoundUpTo4(static_cast<int>(-2)), 0); + EXPECT_EQ(RoundUpTo4(static_cast<int>(-1)), 0); + EXPECT_EQ(RoundUpTo4(static_cast<int>(0)), 0); + EXPECT_EQ(RoundUpTo4(static_cast<int>(1)), 4); + EXPECT_EQ(RoundUpTo4(static_cast<int>(2)), 4); + EXPECT_EQ(RoundUpTo4(static_cast<int>(3)), 4); + EXPECT_EQ(RoundUpTo4(static_cast<int>(4)), 4); + EXPECT_EQ(RoundUpTo4(static_cast<int>(5)), 8); + EXPECT_EQ(RoundUpTo4(static_cast<int>(6)), 8); + EXPECT_EQ(RoundUpTo4(static_cast<int>(7)), 8); + EXPECT_EQ(RoundUpTo4(static_cast<int>(8)), 8); + EXPECT_EQ(RoundUpTo4(static_cast<int64_t>(10000000000)), 10000000000); + EXPECT_EQ(RoundUpTo4(static_cast<int64_t>(10000000001)), 10000000004); + + // Unsigned numbers + EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(0)), 0u); + EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(1)), 4u); + EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(2)), 4u); + EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(3)), 4u); + EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(4)), 4u); + EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(5)), 8u); + EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(6)), 8u); + EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(7)), 8u); + EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(8)), 8u); + EXPECT_EQ(RoundUpTo4(static_cast<uint64_t>(10000000000)), 10000000000u); + EXPECT_EQ(RoundUpTo4(static_cast<uint64_t>(10000000001)), 10000000004u); +} + +TEST(MathUtilTest, CanRoundDownTo4) { + // Signed numbers + EXPECT_EQ(RoundDownTo4(static_cast<int>(-5)), -8); + EXPECT_EQ(RoundDownTo4(static_cast<int>(-4)), -4); + EXPECT_EQ(RoundDownTo4(static_cast<int>(-3)), -4); + EXPECT_EQ(RoundDownTo4(static_cast<int>(-2)), -4); + EXPECT_EQ(RoundDownTo4(static_cast<int>(-1)), -4); + EXPECT_EQ(RoundDownTo4(static_cast<int>(0)), 0); + EXPECT_EQ(RoundDownTo4(static_cast<int>(1)), 0); + EXPECT_EQ(RoundDownTo4(static_cast<int>(2)), 0); + EXPECT_EQ(RoundDownTo4(static_cast<int>(3)), 0); + EXPECT_EQ(RoundDownTo4(static_cast<int>(4)), 4); + EXPECT_EQ(RoundDownTo4(static_cast<int>(5)), 4); + EXPECT_EQ(RoundDownTo4(static_cast<int>(6)), 4); + EXPECT_EQ(RoundDownTo4(static_cast<int>(7)), 4); + EXPECT_EQ(RoundDownTo4(static_cast<int>(8)), 8); + EXPECT_EQ(RoundDownTo4(static_cast<int64_t>(10000000000)), 10000000000); + EXPECT_EQ(RoundDownTo4(static_cast<int64_t>(10000000001)), 10000000000); + + // Unsigned numbers + EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(0)), 0u); + EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(1)), 0u); + EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(2)), 0u); + EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(3)), 0u); + EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(4)), 4u); + EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(5)), 4u); + EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(6)), 4u); + EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(7)), 4u); + EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(8)), 8u); + EXPECT_EQ(RoundDownTo4(static_cast<uint64_t>(10000000000)), 10000000000u); + EXPECT_EQ(RoundDownTo4(static_cast<uint64_t>(10000000001)), 10000000000u); +} + +TEST(MathUtilTest, IsDivisibleBy4) { + // Signed numbers + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(-4)), true); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(-3)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(-2)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(-1)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(0)), true); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(1)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(2)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(3)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(4)), true); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(5)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(6)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(7)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<int>(8)), true); + EXPECT_EQ(IsDivisibleBy4(static_cast<int64_t>(10000000000)), true); + EXPECT_EQ(IsDivisibleBy4(static_cast<int64_t>(10000000001)), false); + + // Unsigned numbers + EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(0)), true); + EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(1)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(2)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(3)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(4)), true); + EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(5)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(6)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(7)), false); + EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(8)), true); + EXPECT_EQ(IsDivisibleBy4(static_cast<uint64_t>(10000000000)), true); + EXPECT_EQ(IsDivisibleBy4(static_cast<uint64_t>(10000000001)), false); +} + +} // namespace +} // namespace dcsctp |