| // Copyright 2020 The Pigweed Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| // use this file except in compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| // License for the specific language governing permissions and limitations under |
| // the License. |
| |
| #include "pw_bytes/array.h" |
| |
| #include <array> |
| #include <cstddef> |
| |
| #include "gtest/gtest.h" |
| |
| namespace pw::bytes { |
| namespace { |
| |
| using std::byte; |
| |
| template <typename T, typename U> |
| constexpr bool Equal(const T& lhs, const U& rhs) { |
| if (sizeof(lhs) != sizeof(rhs) || std::size(lhs) != std::size(rhs)) { |
| return false; |
| } |
| |
| for (size_t i = 0; i < std::size(lhs); ++i) { |
| if (lhs[i] != rhs[i]) { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| constexpr std::array<byte, 5> kHello{ |
| byte{'H'}, byte{'e'}, byte{'l'}, byte{'l'}, byte{'o'}}; |
| |
| constexpr uint32_t kEllo = |
| static_cast<uint32_t>('e') << 0 | static_cast<uint32_t>('l') << 8 | |
| static_cast<uint32_t>('l') << 16 | static_cast<uint32_t>('o') << 24; |
| |
| static_assert(Equal(String("Hello"), kHello)); |
| static_assert(Equal(String(""), std::array<byte, 0>{})); |
| static_assert(Equal(MakeArray('H', 'e', 'l', 'l', 'o'), kHello)); |
| static_assert(Equal(Concat('H', kEllo), kHello)); |
| |
| constexpr std::array<byte, 3> kInit{byte{'?'}, byte{'?'}, byte{'?'}}; |
| static_assert(Equal(Initialized<3>('?'), kInit)); |
| |
| constexpr std::array<byte, 3> kCounting = MakeArray(0, 1, 2); |
| static_assert(Equal(Initialized<3>([](size_t i) { return i; }), kCounting)); |
| |
| constexpr std::array<byte, 3> kCounting2 = MakeArray(256, 1, 2); |
| static_assert(Equal(Initialized<3>([](size_t i) { return i; }), kCounting2)); |
| |
| constexpr auto kArray = Array<1, 2, 3, 255>(); |
| static_assert(Equal(MakeArray(1, 2, 3, 255), kArray)); |
| |
| constexpr std::array<uint8_t, 4> kUintArray = Array<uint8_t, 1, 2, 3, 255>(); |
| static_assert(Equal(MakeArray<uint8_t>(1, 2, 3, 255), kUintArray)); |
| |
| // Create a byte array with bytes::Concat and bytes::String and check that its |
| // contents are correct. |
| constexpr std::array<char, 2> kTestArray = {'a', 'b'}; |
| |
| constexpr auto kConcatTest = bytes::Concat('a', |
| uint16_t(1), |
| uint8_t(23), |
| kTestArray, |
| bytes::String("c"), |
| uint64_t(-1)); |
| |
| static_assert(kConcatTest.size() == 15); |
| static_assert(kConcatTest[0] == byte{'a'}); |
| static_assert(kConcatTest[1] == byte{1}); |
| static_assert(kConcatTest[2] == byte{0}); |
| static_assert(kConcatTest[3] == byte{23}); |
| static_assert(kConcatTest[4] == byte{'a'}); |
| static_assert(kConcatTest[5] == byte{'b'}); |
| static_assert(kConcatTest[6] == byte{'c'}); |
| static_assert(kConcatTest[7] == byte{0xff}); |
| static_assert(kConcatTest[8] == byte{0xff}); |
| static_assert(kConcatTest[9] == byte{0xff}); |
| static_assert(kConcatTest[10] == byte{0xff}); |
| static_assert(kConcatTest[11] == byte{0xff}); |
| static_assert(kConcatTest[12] == byte{0xff}); |
| static_assert(kConcatTest[13] == byte{0xff}); |
| static_assert(kConcatTest[14] == byte{0xff}); |
| |
| } // namespace |
| } // namespace pw::bytes |