| François Doray | 714df63e | 2025-07-04 19:07:20 | [diff] [blame] | 1 | // Copyright 2025 The Chromium Authors |
| 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"base/byte_count.h" |
| 6 | |
| 7 | #include"base/test/gtest_util.h" |
| 8 | #include"testing/gmock/include/gmock/gmock.h" |
| 9 | #include"testing/gtest/include/gtest/gtest.h" |
| 10 | |
| 11 | namespace base{ |
| 12 | |
| 13 | TEST(ByteCount,ConstructionDefault){ |
| 14 | constexprByteCount bytes; |
| 15 | EXPECT_EQ(0, bytes.InBytes()); |
| 16 | EXPECT_EQ(0, bytes.InKiB()); |
| 17 | EXPECT_EQ(0, bytes.InMiB()); |
| 18 | EXPECT_EQ(0, bytes.InGiB()); |
| 19 | EXPECT_EQ(0, bytes.InBytesUnsigned()); |
| 20 | } |
| 21 | |
| 22 | TEST(ByteCount,ConstructionByteCount){ |
| 23 | constexprByteCount bytes(1024*1024*1024); |
| 24 | EXPECT_EQ(1024*1024*1024, bytes.InBytes()); |
| 25 | EXPECT_EQ(1024*1024, bytes.InKiB()); |
| 26 | EXPECT_EQ(1024, bytes.InMiB()); |
| 27 | EXPECT_EQ(1, bytes.InGiB()); |
| 28 | EXPECT_EQ(1024u*1024*1024, bytes.InBytesUnsigned()); |
| 29 | } |
| 30 | |
| 31 | TEST(ByteCount,ConstructionUnsigned){ |
| 32 | auto bytes=ByteCount::FromUnsigned(5u); |
| 33 | EXPECT_EQ(5, bytes.InBytes()); |
| 34 | } |
| 35 | |
| 36 | TEST(ByteCount,ConstructionUnsignedInvalid){ |
| 37 | BASE_EXPECT_DEATH( |
| 38 | {ByteCount::FromUnsigned(std::numeric_limits<uint64_t>::max());},""); |
| 39 | } |
| 40 | |
| 41 | TEST(ByteCount,ConstructionOtherUnit){ |
| 42 | auto kib5=KiB(5); |
| 43 | EXPECT_EQ(5*1024, kib5.InBytes()); |
| 44 | |
| 45 | auto mib5=MiB(5); |
| 46 | EXPECT_EQ(5*1024*1024, mib5.InBytes()); |
| 47 | |
| 48 | auto gib5=GiB(5); |
| 49 | EXPECT_EQ(5ll*1024*1024*1024, gib5.InBytes()); |
| 50 | } |
| 51 | |
| 52 | TEST(ByteCount,ConstructionOtherUnitInvalid){ |
| 53 | BASE_EXPECT_DEATH({KiB(std::numeric_limits<int64_t>::max());},""); |
| 54 | |
| 55 | BASE_EXPECT_DEATH({MiB(std::numeric_limits<int64_t>::max());},""); |
| 56 | |
| 57 | BASE_EXPECT_DEATH({GiB(std::numeric_limits<int64_t>::max());},""); |
| 58 | } |
| 59 | |
| 60 | TEST(ByteCount,IsZero){ |
| 61 | EXPECT_TRUE(ByteCount(0).is_zero()); |
| 62 | EXPECT_FALSE(ByteCount(-2).is_zero()); |
| 63 | EXPECT_FALSE(ByteCount(2).is_zero()); |
| 64 | } |
| 65 | |
| 66 | TEST(ByteCount,InFloating){ |
| 67 | constexprByteCount bytes(3435973836); |
| 68 | EXPECT_THAT(bytes.InKiBF(), testing::DoubleEq(3355443.19921875)); |
| 69 | EXPECT_THAT(bytes.InMiBF(), testing::DoubleEq(3276.7999992370605)); |
| 70 | EXPECT_THAT(bytes.InGiBF(), testing::DoubleEq(3.1999999992549419)); |
| 71 | } |
| 72 | |
| 73 | TEST(ByteCount,InUnsignedInvalid){ |
| 74 | ByteCount bytes(-2); |
| 75 | BASE_EXPECT_DEATH({ bytes.InBytesUnsigned();},""); |
| 76 | } |
| 77 | |
| 78 | TEST(ByteCount,Arithmetic){ |
| 79 | ByteCount bytes(42); |
| 80 | |
| 81 | ByteCount add= bytes+ByteCount(10); |
| 82 | EXPECT_EQ(52, add.InBytes()); |
| 83 | |
| 84 | ByteCount sub= bytes-ByteCount(10); |
| 85 | EXPECT_EQ(32, sub.InBytes()); |
| 86 | |
| 87 | ByteCount mul= bytes*10; |
| 88 | EXPECT_EQ(420, mul.InBytes()); |
| 89 | |
| 90 | ByteCount div= bytes/2; |
| 91 | EXPECT_EQ(21, div.InBytes()); |
| 92 | } |
| 93 | |
| 94 | TEST(ByteCount,ArithmeticInvalid){ |
| 95 | ByteCount max_bytes(std::numeric_limits<int64_t>::max()); |
| 96 | |
| 97 | BASE_EXPECT_DEATH({ max_bytes+ max_bytes;},""); |
| 98 | |
| 99 | BASE_EXPECT_DEATH({ByteCount()- max_bytes- max_bytes;},""); |
| 100 | |
| 101 | BASE_EXPECT_DEATH({ max_bytes*2;},""); |
| 102 | |
| 103 | BASE_EXPECT_DEATH({ max_bytes/0;},""); |
| 104 | } |
| 105 | |
| 106 | TEST(ByteCount,Comparison){ |
| 107 | ByteCount a(1); |
| 108 | ByteCount b(2); |
| 109 | ByteCount c(2); |
| 110 | |
| 111 | EXPECT_TRUE(a< b); |
| 112 | EXPECT_FALSE(b< a); |
| 113 | EXPECT_FALSE(b< c); |
| 114 | |
| 115 | EXPECT_TRUE(a<= b); |
| 116 | EXPECT_FALSE(b<= a); |
| 117 | EXPECT_TRUE(b<= c); |
| 118 | |
| 119 | EXPECT_FALSE(a> b); |
| 120 | EXPECT_TRUE(b> a); |
| 121 | EXPECT_FALSE(b> c); |
| 122 | |
| 123 | EXPECT_FALSE(a>= b); |
| 124 | EXPECT_TRUE(b>= a); |
| 125 | EXPECT_TRUE(b>= c); |
| 126 | |
| 127 | EXPECT_FALSE(a== b); |
| 128 | EXPECT_TRUE(b== c); |
| 129 | |
| 130 | EXPECT_TRUE(a!= b); |
| 131 | EXPECT_FALSE(b!= c); |
| 132 | } |
| 133 | |
| 134 | }// namespace base |
