// Copyright (c) 2013, Kenton Varda <temporal@gmail.com> // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // // 1. Redistributions of source code must retain the above copyright notice, this // list of conditions and the following disclaimer. // 2. Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR // ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND // ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // 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 <gtest/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