endian-test.c++ (3106B)
1 // Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors 2 // Licensed under the MIT License: 3 // 4 // Permission is hereby granted, free of charge, to any person obtaining a copy 5 // of this software and associated documentation files (the "Software"), to deal 6 // in the Software without restriction, including without limitation the rights 7 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 // copies of the Software, and to permit persons to whom the Software is 9 // furnished to do so, subject to the following conditions: 10 // 11 // The above copyright notice and this permission notice shall be included in 12 // all copies or substantial portions of the Software. 13 // 14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 20 // THE SOFTWARE. 21 22 #include "endian.h" 23 #include <kj/compat/gtest.h> 24 25 namespace capnp { 26 namespace _ { // private 27 namespace { 28 29 #if CAPNP_DISABLE_ENDIAN_DETECTION 30 #define Endian EndianUnoptimized 31 #endif 32 33 TEST(Endian, Byte) { 34 byte bytes[] = {123, 45, 67, 89}; 35 36 WireValue<uint8_t>* vals = reinterpret_cast<WireValue<uint8_t>*>(bytes); 37 38 EXPECT_EQ(123, vals[0].get()); 39 EXPECT_EQ(45, vals[1].get()); 40 EXPECT_EQ(67, vals[2].get()); 41 EXPECT_EQ(89, vals[3].get()); 42 43 vals[0].set(21); 44 vals[1].set(43); 45 vals[2].set(65); 46 vals[3].set(87); 47 48 EXPECT_EQ(21, bytes[0]); 49 EXPECT_EQ(43, bytes[1]); 50 EXPECT_EQ(65, bytes[2]); 51 EXPECT_EQ(87, bytes[3]); 52 } 53 54 TEST(Endian, TwoBytes) { 55 byte bytes[] = {0x12, 0x34, 0x56, 0x78}; 56 57 WireValue<uint16_t>* vals = reinterpret_cast<WireValue<uint16_t>*>(bytes); 58 59 EXPECT_EQ(0x3412, vals[0].get()); 60 EXPECT_EQ(0x7856, vals[1].get()); 61 62 vals[0].set(0x2345); 63 vals[1].set(0x6789); 64 65 EXPECT_EQ(0x45, bytes[0]); 66 EXPECT_EQ(0x23, bytes[1]); 67 EXPECT_EQ(0x89, bytes[2]); 68 EXPECT_EQ(0x67, bytes[3]); 69 } 70 71 TEST(Endian, FourBytes) { 72 byte bytes[] = {0x12, 0x34, 0x56, 0x78}; 73 74 WireValue<uint32_t>* vals = reinterpret_cast<WireValue<uint32_t>*>(bytes); 75 76 EXPECT_EQ(0x78563412u, vals[0].get()); 77 78 vals[0].set(0x23456789); 79 80 EXPECT_EQ(0x89, bytes[0]); 81 EXPECT_EQ(0x67, bytes[1]); 82 EXPECT_EQ(0x45, bytes[2]); 83 EXPECT_EQ(0x23, bytes[3]); 84 } 85 86 TEST(Endian, EightBytes) { 87 byte bytes[] = {0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0}; 88 89 WireValue<uint64_t>* vals = reinterpret_cast<WireValue<uint64_t>*>(bytes); 90 91 EXPECT_EQ(0xf0debc9a78563412, vals[0].get()); 92 93 vals[0].set(0x23456789abcdef01); 94 95 EXPECT_EQ(0x01, bytes[0]); 96 EXPECT_EQ(0xef, bytes[1]); 97 EXPECT_EQ(0xcd, bytes[2]); 98 EXPECT_EQ(0xab, bytes[3]); 99 EXPECT_EQ(0x89, bytes[4]); 100 EXPECT_EQ(0x67, bytes[5]); 101 EXPECT_EQ(0x45, bytes[6]); 102 EXPECT_EQ(0x23, bytes[7]); 103 } 104 105 } // namespace 106 } // namespace _ (private) 107 } // namespace capnp