// Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors // Licensed under the MIT License: // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. #if !_MSC_VER // (MSVC targets only little-endian platforms and so we haven't implemented any byte swapping // intrinsics for it. So, this test would fail there.) // Test that the code for the opposite endianness of our CPU works. E.g. on x86 this will test // the bswap-based code. #define CAPNP_REVERSE_ENDIAN 1 #include "endian.h" #include <kj/compat/gtest.h> namespace capnp { namespace _ { // private namespace { TEST(EndianReverse, Byte) { byte bytes[] = {123, 45, 67, 89}; WireValue<uint8_t>* vals = reinterpret_cast<WireValue<uint8_t>*>(bytes); EXPECT_EQ(123, vals[0].get()); EXPECT_EQ(45, vals[1].get()); EXPECT_EQ(67, vals[2].get()); EXPECT_EQ(89, vals[3].get()); vals[0].set(21); vals[1].set(43); vals[2].set(65); vals[3].set(87); EXPECT_EQ(21, bytes[0]); EXPECT_EQ(43, bytes[1]); EXPECT_EQ(65, bytes[2]); EXPECT_EQ(87, bytes[3]); } TEST(EndianReverse, TwoBytes) { byte bytes[] = {0x12, 0x34, 0x56, 0x78}; WireValue<uint16_t>* vals = reinterpret_cast<WireValue<uint16_t>*>(bytes); EXPECT_EQ(0x1234, vals[0].get()); EXPECT_EQ(0x5678, vals[1].get()); vals[0].set(0x2345); vals[1].set(0x6789); EXPECT_EQ(0x23, bytes[0]); EXPECT_EQ(0x45, bytes[1]); EXPECT_EQ(0x67, bytes[2]); EXPECT_EQ(0x89, bytes[3]); } TEST(EndianReverse, FourBytes) { byte bytes[] = {0x12, 0x34, 0x56, 0x78}; WireValue<uint32_t>* vals = reinterpret_cast<WireValue<uint32_t>*>(bytes); EXPECT_EQ(0x12345678u, vals[0].get()); vals[0].set(0x23456789); EXPECT_EQ(0x23, bytes[0]); EXPECT_EQ(0x45, bytes[1]); EXPECT_EQ(0x67, bytes[2]); EXPECT_EQ(0x89, bytes[3]); } TEST(EndianReverse, EightBytes) { byte bytes[] = {0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0}; WireValue<uint64_t>* vals = reinterpret_cast<WireValue<uint64_t>*>(bytes); EXPECT_EQ(0x123456789abcdef0ull, vals[0].get()); vals[0].set(0x23456789abcdef01ull); EXPECT_EQ(0x23, bytes[0]); EXPECT_EQ(0x45, bytes[1]); EXPECT_EQ(0x67, bytes[2]); EXPECT_EQ(0x89, bytes[3]); EXPECT_EQ(0xab, bytes[4]); EXPECT_EQ(0xcd, bytes[5]); EXPECT_EQ(0xef, bytes[6]); EXPECT_EQ(0x01, bytes[7]); } } // namespace } // namespace _ (private) } // namespace capnp #endif // !_MSC_VER