Victor Boivie | a4d5e24 | 2021-03-30 10:03:51 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | #include "net/dcsctp/common/math.h" |
| 11 | |
| 12 | #include "test/gmock.h" |
| 13 | |
| 14 | namespace dcsctp { |
| 15 | namespace { |
| 16 | |
| 17 | TEST(MathUtilTest, CanRoundUpTo4) { |
Victor Boivie | 78aa5cd | 2021-04-13 23:42:39 +0200 | [diff] [blame] | 18 | // Signed numbers |
| 19 | EXPECT_EQ(RoundUpTo4(static_cast<int>(-5)), -4); |
| 20 | EXPECT_EQ(RoundUpTo4(static_cast<int>(-4)), -4); |
| 21 | EXPECT_EQ(RoundUpTo4(static_cast<int>(-3)), 0); |
| 22 | EXPECT_EQ(RoundUpTo4(static_cast<int>(-2)), 0); |
| 23 | EXPECT_EQ(RoundUpTo4(static_cast<int>(-1)), 0); |
| 24 | EXPECT_EQ(RoundUpTo4(static_cast<int>(0)), 0); |
| 25 | EXPECT_EQ(RoundUpTo4(static_cast<int>(1)), 4); |
| 26 | EXPECT_EQ(RoundUpTo4(static_cast<int>(2)), 4); |
| 27 | EXPECT_EQ(RoundUpTo4(static_cast<int>(3)), 4); |
| 28 | EXPECT_EQ(RoundUpTo4(static_cast<int>(4)), 4); |
| 29 | EXPECT_EQ(RoundUpTo4(static_cast<int>(5)), 8); |
| 30 | EXPECT_EQ(RoundUpTo4(static_cast<int>(6)), 8); |
| 31 | EXPECT_EQ(RoundUpTo4(static_cast<int>(7)), 8); |
| 32 | EXPECT_EQ(RoundUpTo4(static_cast<int>(8)), 8); |
| 33 | EXPECT_EQ(RoundUpTo4(static_cast<int64_t>(10000000000)), 10000000000); |
| 34 | EXPECT_EQ(RoundUpTo4(static_cast<int64_t>(10000000001)), 10000000004); |
| 35 | |
| 36 | // Unsigned numbers |
| 37 | EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(0)), 0u); |
| 38 | EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(1)), 4u); |
| 39 | EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(2)), 4u); |
| 40 | EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(3)), 4u); |
| 41 | EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(4)), 4u); |
| 42 | EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(5)), 8u); |
| 43 | EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(6)), 8u); |
| 44 | EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(7)), 8u); |
| 45 | EXPECT_EQ(RoundUpTo4(static_cast<unsigned int>(8)), 8u); |
| 46 | EXPECT_EQ(RoundUpTo4(static_cast<uint64_t>(10000000000)), 10000000000u); |
| 47 | EXPECT_EQ(RoundUpTo4(static_cast<uint64_t>(10000000001)), 10000000004u); |
| 48 | } |
| 49 | |
| 50 | TEST(MathUtilTest, CanRoundDownTo4) { |
| 51 | // Signed numbers |
| 52 | EXPECT_EQ(RoundDownTo4(static_cast<int>(-5)), -8); |
| 53 | EXPECT_EQ(RoundDownTo4(static_cast<int>(-4)), -4); |
| 54 | EXPECT_EQ(RoundDownTo4(static_cast<int>(-3)), -4); |
| 55 | EXPECT_EQ(RoundDownTo4(static_cast<int>(-2)), -4); |
| 56 | EXPECT_EQ(RoundDownTo4(static_cast<int>(-1)), -4); |
| 57 | EXPECT_EQ(RoundDownTo4(static_cast<int>(0)), 0); |
| 58 | EXPECT_EQ(RoundDownTo4(static_cast<int>(1)), 0); |
| 59 | EXPECT_EQ(RoundDownTo4(static_cast<int>(2)), 0); |
| 60 | EXPECT_EQ(RoundDownTo4(static_cast<int>(3)), 0); |
| 61 | EXPECT_EQ(RoundDownTo4(static_cast<int>(4)), 4); |
| 62 | EXPECT_EQ(RoundDownTo4(static_cast<int>(5)), 4); |
| 63 | EXPECT_EQ(RoundDownTo4(static_cast<int>(6)), 4); |
| 64 | EXPECT_EQ(RoundDownTo4(static_cast<int>(7)), 4); |
| 65 | EXPECT_EQ(RoundDownTo4(static_cast<int>(8)), 8); |
| 66 | EXPECT_EQ(RoundDownTo4(static_cast<int64_t>(10000000000)), 10000000000); |
| 67 | EXPECT_EQ(RoundDownTo4(static_cast<int64_t>(10000000001)), 10000000000); |
| 68 | |
| 69 | // Unsigned numbers |
| 70 | EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(0)), 0u); |
| 71 | EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(1)), 0u); |
| 72 | EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(2)), 0u); |
| 73 | EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(3)), 0u); |
| 74 | EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(4)), 4u); |
| 75 | EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(5)), 4u); |
| 76 | EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(6)), 4u); |
| 77 | EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(7)), 4u); |
| 78 | EXPECT_EQ(RoundDownTo4(static_cast<unsigned int>(8)), 8u); |
| 79 | EXPECT_EQ(RoundDownTo4(static_cast<uint64_t>(10000000000)), 10000000000u); |
| 80 | EXPECT_EQ(RoundDownTo4(static_cast<uint64_t>(10000000001)), 10000000000u); |
| 81 | } |
| 82 | |
| 83 | TEST(MathUtilTest, IsDivisibleBy4) { |
| 84 | // Signed numbers |
| 85 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(-4)), true); |
| 86 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(-3)), false); |
| 87 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(-2)), false); |
| 88 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(-1)), false); |
| 89 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(0)), true); |
| 90 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(1)), false); |
| 91 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(2)), false); |
| 92 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(3)), false); |
| 93 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(4)), true); |
| 94 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(5)), false); |
| 95 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(6)), false); |
| 96 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(7)), false); |
| 97 | EXPECT_EQ(IsDivisibleBy4(static_cast<int>(8)), true); |
| 98 | EXPECT_EQ(IsDivisibleBy4(static_cast<int64_t>(10000000000)), true); |
| 99 | EXPECT_EQ(IsDivisibleBy4(static_cast<int64_t>(10000000001)), false); |
| 100 | |
| 101 | // Unsigned numbers |
| 102 | EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(0)), true); |
| 103 | EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(1)), false); |
| 104 | EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(2)), false); |
| 105 | EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(3)), false); |
| 106 | EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(4)), true); |
| 107 | EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(5)), false); |
| 108 | EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(6)), false); |
| 109 | EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(7)), false); |
| 110 | EXPECT_EQ(IsDivisibleBy4(static_cast<unsigned int>(8)), true); |
| 111 | EXPECT_EQ(IsDivisibleBy4(static_cast<uint64_t>(10000000000)), true); |
| 112 | EXPECT_EQ(IsDivisibleBy4(static_cast<uint64_t>(10000000001)), false); |
Victor Boivie | a4d5e24 | 2021-03-30 10:03:51 +0200 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | } // namespace |
| 116 | } // namespace dcsctp |