| //===- unittests/Support/EndianStreamTest.cpp - EndianStream.h tests ------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Support/EndianStream.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/Support/DataTypes.h" |
| #include "gtest/gtest.h" |
| using namespace llvm; |
| using namespace support; |
| |
| namespace { |
| |
| TEST(EndianStream, WriteInt32LE) { |
| SmallString<16> data; |
| |
| { |
| raw_svector_ostream OS(data); |
| endian::Writer LE(OS, little); |
| LE.write(static_cast<int32_t>(-1362446643)); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(data[0]), 0xCD); |
| EXPECT_EQ(static_cast<uint8_t>(data[1]), 0xB6); |
| EXPECT_EQ(static_cast<uint8_t>(data[2]), 0xCA); |
| EXPECT_EQ(static_cast<uint8_t>(data[3]), 0xAE); |
| } |
| |
| TEST(EndianStream, WriteInt32BE) { |
| SmallVector<char, 16> data; |
| |
| { |
| raw_svector_ostream OS(data); |
| endian::Writer BE(OS, big); |
| BE.write(static_cast<int32_t>(-1362446643)); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(data[0]), 0xAE); |
| EXPECT_EQ(static_cast<uint8_t>(data[1]), 0xCA); |
| EXPECT_EQ(static_cast<uint8_t>(data[2]), 0xB6); |
| EXPECT_EQ(static_cast<uint8_t>(data[3]), 0xCD); |
| } |
| |
| |
| TEST(EndianStream, WriteFloatLE) { |
| SmallString<16> data; |
| |
| { |
| raw_svector_ostream OS(data); |
| endian::Writer LE(OS, little); |
| LE.write(12345.0f); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(data[0]), 0x00); |
| EXPECT_EQ(static_cast<uint8_t>(data[1]), 0xE4); |
| EXPECT_EQ(static_cast<uint8_t>(data[2]), 0x40); |
| EXPECT_EQ(static_cast<uint8_t>(data[3]), 0x46); |
| } |
| |
| TEST(EndianStream, WriteFloatBE) { |
| SmallVector<char, 16> data; |
| |
| { |
| raw_svector_ostream OS(data); |
| endian::Writer BE(OS, big); |
| BE.write(12345.0f); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(data[0]), 0x46); |
| EXPECT_EQ(static_cast<uint8_t>(data[1]), 0x40); |
| EXPECT_EQ(static_cast<uint8_t>(data[2]), 0xE4); |
| EXPECT_EQ(static_cast<uint8_t>(data[3]), 0x00); |
| } |
| |
| TEST(EndianStream, WriteInt64LE) { |
| SmallString<16> data; |
| |
| { |
| raw_svector_ostream OS(data); |
| endian::Writer LE(OS, little); |
| LE.write(static_cast<int64_t>(-136244664332342323)); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(data[0]), 0xCD); |
| EXPECT_EQ(static_cast<uint8_t>(data[1]), 0xAB); |
| EXPECT_EQ(static_cast<uint8_t>(data[2]), 0xED); |
| EXPECT_EQ(static_cast<uint8_t>(data[3]), 0x1B); |
| EXPECT_EQ(static_cast<uint8_t>(data[4]), 0x33); |
| EXPECT_EQ(static_cast<uint8_t>(data[5]), 0xF6); |
| EXPECT_EQ(static_cast<uint8_t>(data[6]), 0x1B); |
| EXPECT_EQ(static_cast<uint8_t>(data[7]), 0xFE); |
| } |
| |
| TEST(EndianStream, WriteInt64BE) { |
| SmallVector<char, 16> data; |
| |
| { |
| raw_svector_ostream OS(data); |
| endian::Writer BE(OS, big); |
| BE.write(static_cast<int64_t>(-136244664332342323)); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(data[0]), 0xFE); |
| EXPECT_EQ(static_cast<uint8_t>(data[1]), 0x1B); |
| EXPECT_EQ(static_cast<uint8_t>(data[2]), 0xF6); |
| EXPECT_EQ(static_cast<uint8_t>(data[3]), 0x33); |
| EXPECT_EQ(static_cast<uint8_t>(data[4]), 0x1B); |
| EXPECT_EQ(static_cast<uint8_t>(data[5]), 0xED); |
| EXPECT_EQ(static_cast<uint8_t>(data[6]), 0xAB); |
| EXPECT_EQ(static_cast<uint8_t>(data[7]), 0xCD); |
| } |
| |
| TEST(EndianStream, WriteDoubleLE) { |
| SmallString<16> data; |
| |
| { |
| raw_svector_ostream OS(data); |
| endian::Writer LE(OS, little); |
| LE.write(-2349214918.58107); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(data[0]), 0x20); |
| EXPECT_EQ(static_cast<uint8_t>(data[1]), 0x98); |
| EXPECT_EQ(static_cast<uint8_t>(data[2]), 0xD2); |
| EXPECT_EQ(static_cast<uint8_t>(data[3]), 0x98); |
| EXPECT_EQ(static_cast<uint8_t>(data[4]), 0xC5); |
| EXPECT_EQ(static_cast<uint8_t>(data[5]), 0x80); |
| EXPECT_EQ(static_cast<uint8_t>(data[6]), 0xE1); |
| EXPECT_EQ(static_cast<uint8_t>(data[7]), 0xC1); |
| } |
| |
| TEST(EndianStream, WriteDoubleBE) { |
| SmallVector<char, 16> data; |
| |
| { |
| raw_svector_ostream OS(data); |
| endian::Writer BE(OS, big); |
| BE.write(-2349214918.58107); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(data[0]), 0xC1); |
| EXPECT_EQ(static_cast<uint8_t>(data[1]), 0xE1); |
| EXPECT_EQ(static_cast<uint8_t>(data[2]), 0x80); |
| EXPECT_EQ(static_cast<uint8_t>(data[3]), 0xC5); |
| EXPECT_EQ(static_cast<uint8_t>(data[4]), 0x98); |
| EXPECT_EQ(static_cast<uint8_t>(data[5]), 0xD2); |
| EXPECT_EQ(static_cast<uint8_t>(data[6]), 0x98); |
| EXPECT_EQ(static_cast<uint8_t>(data[7]), 0x20); |
| } |
| |
| TEST(EndianStream, WriteArrayLE) { |
| SmallString<16> Data; |
| |
| { |
| raw_svector_ostream OS(Data); |
| endian::Writer LE(OS, little); |
| LE.write<uint16_t>({0x1234, 0x5678}); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(Data[0]), 0x34); |
| EXPECT_EQ(static_cast<uint8_t>(Data[1]), 0x12); |
| EXPECT_EQ(static_cast<uint8_t>(Data[2]), 0x78); |
| EXPECT_EQ(static_cast<uint8_t>(Data[3]), 0x56); |
| } |
| |
| TEST(EndianStream, WriteVectorLE) { |
| SmallString<16> Data; |
| |
| { |
| raw_svector_ostream OS(Data); |
| endian::Writer LE(OS, little); |
| std::vector<uint16_t> Vec{0x1234, 0x5678}; |
| LE.write<uint16_t>(Vec); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(Data[0]), 0x34); |
| EXPECT_EQ(static_cast<uint8_t>(Data[1]), 0x12); |
| EXPECT_EQ(static_cast<uint8_t>(Data[2]), 0x78); |
| EXPECT_EQ(static_cast<uint8_t>(Data[3]), 0x56); |
| } |
| |
| TEST(EndianStream, WriteFloatArrayLE) { |
| SmallString<16> Data; |
| |
| { |
| raw_svector_ostream OS(Data); |
| endian::Writer LE(OS, little); |
| LE.write<float>({12345.0f, 12346.0f}); |
| } |
| |
| EXPECT_EQ(static_cast<uint8_t>(Data[0]), 0x00); |
| EXPECT_EQ(static_cast<uint8_t>(Data[1]), 0xE4); |
| EXPECT_EQ(static_cast<uint8_t>(Data[2]), 0x40); |
| EXPECT_EQ(static_cast<uint8_t>(Data[3]), 0x46); |
| |
| EXPECT_EQ(static_cast<uint8_t>(Data[4]), 0x00); |
| EXPECT_EQ(static_cast<uint8_t>(Data[5]), 0xE8); |
| EXPECT_EQ(static_cast<uint8_t>(Data[6]), 0x40); |
| EXPECT_EQ(static_cast<uint8_t>(Data[7]), 0x46); |
| } |
| |
| |
| } // end anon namespace |