The Tor Browser / file comparison
comparison: mfbt/tests/TestCasting.cpp
mfbt/tests/TestCasting.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:6440dd924b80 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 4 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "mozilla/Casting.h" | |
| 7 | |
| 8 #include <stdint.h> | |
| 9 | |
| 10 using mozilla::BitwiseCast; | |
| 11 using mozilla::detail::IsInBounds; | |
| 12 | |
| 13 template<typename Uint, typename Ulong, bool = (sizeof(Uint) == sizeof(Ulong))> | |
| 14 struct UintUlongBitwiseCast; | |
| 15 | |
| 16 template<typename Uint, typename Ulong> | |
| 17 struct UintUlongBitwiseCast<Uint, Ulong, true> | |
| 18 { | |
| 19 static void test() { | |
| 20 MOZ_RELEASE_ASSERT(BitwiseCast<Ulong>(Uint(8675309)) == Ulong(8675309)); | |
| 21 } | |
| 22 }; | |
| 23 | |
| 24 template<typename Uint, typename Ulong> | |
| 25 struct UintUlongBitwiseCast<Uint, Ulong, false> | |
| 26 { | |
| 27 static void test() { } | |
| 28 }; | |
| 29 | |
| 30 static void | |
| 31 TestBitwiseCast() | |
| 32 { | |
| 33 MOZ_RELEASE_ASSERT(BitwiseCast<int>(int(8675309)) == int(8675309)); | |
| 34 UintUlongBitwiseCast<unsigned int, unsigned long>::test(); | |
| 35 } | |
| 36 | |
| 37 static void | |
| 38 TestSameSize() | |
| 39 { | |
| 40 MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int16_t>(int16_t(0)))); | |
| 41 MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int16_t>(int16_t(INT16_MIN)))); | |
| 42 MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int16_t>(int16_t(INT16_MAX)))); | |
| 43 MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, uint16_t>(uint16_t(UINT16_MAX)))); | |
| 44 MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, int16_t>(uint16_t(0)))); | |
| 45 MOZ_RELEASE_ASSERT((!IsInBounds<uint16_t, int16_t>(uint16_t(-1)))); | |
| 46 MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint16_t>(int16_t(-1)))); | |
| 47 MOZ_RELEASE_ASSERT((IsInBounds<int16_t, uint16_t>(int16_t(INT16_MAX)))); | |
| 48 MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint16_t>(int16_t(INT16_MIN)))); | |
| 49 MOZ_RELEASE_ASSERT((IsInBounds<int32_t, uint32_t>(int32_t(INT32_MAX)))); | |
| 50 MOZ_RELEASE_ASSERT((!IsInBounds<int32_t, uint32_t>(int32_t(INT32_MIN)))); | |
| 51 } | |
| 52 | |
| 53 static void | |
| 54 TestToBiggerSize() | |
| 55 { | |
| 56 MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int32_t>(int16_t(0)))); | |
| 57 MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int32_t>(int16_t(INT16_MIN)))); | |
| 58 MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int32_t>(int16_t(INT16_MAX)))); | |
| 59 MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, uint32_t>(uint16_t(UINT16_MAX)))); | |
| 60 MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, int32_t>(uint16_t(0)))); | |
| 61 MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, int32_t>(uint16_t(-1)))); | |
| 62 MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint32_t>(int16_t(-1)))); | |
| 63 MOZ_RELEASE_ASSERT((IsInBounds<int16_t, uint32_t>(int16_t(INT16_MAX)))); | |
| 64 MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint32_t>(int16_t(INT16_MIN)))); | |
| 65 MOZ_RELEASE_ASSERT((IsInBounds<int32_t, uint64_t>(int32_t(INT32_MAX)))); | |
| 66 MOZ_RELEASE_ASSERT((!IsInBounds<int32_t, uint64_t>(int32_t(INT32_MIN)))); | |
| 67 } | |
| 68 | |
| 69 static void | |
| 70 TestToSmallerSize() | |
| 71 { | |
| 72 MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int8_t>(int16_t(0)))); | |
| 73 MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, int8_t>(int16_t(INT16_MIN)))); | |
| 74 MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, int8_t>(int16_t(INT16_MAX)))); | |
| 75 MOZ_RELEASE_ASSERT((!IsInBounds<uint16_t, uint8_t>(uint16_t(UINT16_MAX)))); | |
| 76 MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, int8_t>(uint16_t(0)))); | |
| 77 MOZ_RELEASE_ASSERT((!IsInBounds<uint16_t, int8_t>(uint16_t(-1)))); | |
| 78 MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint8_t>(int16_t(-1)))); | |
| 79 MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint8_t>(int16_t(INT16_MAX)))); | |
| 80 MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint8_t>(int16_t(INT16_MIN)))); | |
| 81 MOZ_RELEASE_ASSERT((!IsInBounds<int32_t, uint16_t>(int32_t(INT32_MAX)))); | |
| 82 MOZ_RELEASE_ASSERT((!IsInBounds<int32_t, uint16_t>(int32_t(INT32_MIN)))); | |
| 83 | |
| 84 // Boundary cases | |
| 85 MOZ_RELEASE_ASSERT((!IsInBounds<int64_t, int32_t>(int64_t(INT32_MIN) - 1))); | |
| 86 MOZ_RELEASE_ASSERT((IsInBounds<int64_t, int32_t>(int64_t(INT32_MIN)))); | |
| 87 MOZ_RELEASE_ASSERT((IsInBounds<int64_t, int32_t>(int64_t(INT32_MIN) + 1))); | |
| 88 MOZ_RELEASE_ASSERT((IsInBounds<int64_t, int32_t>(int64_t(INT32_MAX) - 1))); | |
| 89 MOZ_RELEASE_ASSERT((IsInBounds<int64_t, int32_t>(int64_t(INT32_MAX)))); | |
| 90 MOZ_RELEASE_ASSERT((!IsInBounds<int64_t, int32_t>(int64_t(INT32_MAX) + 1))); | |
| 91 | |
| 92 MOZ_RELEASE_ASSERT((!IsInBounds<int64_t, uint32_t>(int64_t(-1)))); | |
| 93 MOZ_RELEASE_ASSERT((IsInBounds<int64_t, uint32_t>(int64_t(0)))); | |
| 94 MOZ_RELEASE_ASSERT((IsInBounds<int64_t, uint32_t>(int64_t(1)))); | |
| 95 MOZ_RELEASE_ASSERT((IsInBounds<int64_t, uint32_t>(int64_t(UINT32_MAX) - 1))); | |
| 96 MOZ_RELEASE_ASSERT((IsInBounds<int64_t, uint32_t>(int64_t(UINT32_MAX)))); | |
| 97 MOZ_RELEASE_ASSERT((!IsInBounds<int64_t, uint32_t>(int64_t(UINT32_MAX) + 1))); | |
| 98 } | |
| 99 | |
| 100 int | |
| 101 main() | |
| 102 { | |
| 103 TestBitwiseCast(); | |
| 104 | |
| 105 TestSameSize(); | |
| 106 TestToBiggerSize(); | |
| 107 TestToSmallerSize(); | |
| 108 } |
