| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/big_endian.h" |
| |
| #include "base/strings/string_piece.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace base { |
| |
| TEST(BigEndianReaderTest, ReadsValues) { |
| char data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, |
| 0x1A, 0x2B, 0x3C, 0x4D, 0x5E }; |
| char buf[2]; |
| uint8 u8; |
| uint16 u16; |
| uint32 u32; |
| uint64 u64; |
| base::StringPiece piece; |
| BigEndianReader reader(data, sizeof(data)); |
| |
| EXPECT_TRUE(reader.Skip(2)); |
| EXPECT_EQ(data + 2, reader.ptr()); |
| EXPECT_EQ(reader.remaining(), static_cast<int>(sizeof(data)) - 2); |
| EXPECT_TRUE(reader.ReadBytes(buf, sizeof(buf))); |
| EXPECT_EQ(0x2, buf[0]); |
| EXPECT_EQ(0x3, buf[1]); |
| EXPECT_TRUE(reader.ReadU8(&u8)); |
| EXPECT_EQ(0x4, u8); |
| EXPECT_TRUE(reader.ReadU16(&u16)); |
| EXPECT_EQ(0x0506, u16); |
| EXPECT_TRUE(reader.ReadU32(&u32)); |
| EXPECT_EQ(0x0708090Au, u32); |
| EXPECT_TRUE(reader.ReadU64(&u64)); |
| EXPECT_EQ(0x0B0C0D0E0F1A2B3Cllu, u64); |
| base::StringPiece expected(reader.ptr(), 2); |
| EXPECT_TRUE(reader.ReadPiece(&piece, 2)); |
| EXPECT_EQ(2u, piece.size()); |
| EXPECT_EQ(expected.data(), piece.data()); |
| } |
| |
| TEST(BigEndianReaderTest, RespectsLength) { |
| char data[8]; |
| char buf[2]; |
| uint8 u8; |
| uint16 u16; |
| uint32 u32; |
| uint64 u64; |
| base::StringPiece piece; |
| BigEndianReader reader(data, sizeof(data)); |
| // 8 left |
| EXPECT_FALSE(reader.Skip(9)); |
| EXPECT_TRUE(reader.Skip(1)); |
| // 7 left |
| EXPECT_FALSE(reader.ReadU64(&u64)); |
| EXPECT_TRUE(reader.Skip(4)); |
| // 3 left |
| EXPECT_FALSE(reader.ReadU32(&u32)); |
| EXPECT_FALSE(reader.ReadPiece(&piece, 4)); |
| EXPECT_TRUE(reader.Skip(2)); |
| // 1 left |
| EXPECT_FALSE(reader.ReadU16(&u16)); |
| EXPECT_FALSE(reader.ReadBytes(buf, 2)); |
| EXPECT_TRUE(reader.Skip(1)); |
| // 0 left |
| EXPECT_FALSE(reader.ReadU8(&u8)); |
| EXPECT_EQ(0, reader.remaining()); |
| } |
| |
| TEST(BigEndianWriterTest, WritesValues) { |
| char expected[] = { 0, 0, 2, 3, 4, 5, 6, 7, 8, 9, 0xA, 0xB, 0xC, 0xD, 0xE, |
| 0xF, 0x1A, 0x2B, 0x3C }; |
| char data[sizeof(expected)]; |
| char buf[] = { 0x2, 0x3 }; |
| memset(data, 0, sizeof(data)); |
| BigEndianWriter writer(data, sizeof(data)); |
| |
| EXPECT_TRUE(writer.Skip(2)); |
| EXPECT_TRUE(writer.WriteBytes(buf, sizeof(buf))); |
| EXPECT_TRUE(writer.WriteU8(0x4)); |
| EXPECT_TRUE(writer.WriteU16(0x0506)); |
| EXPECT_TRUE(writer.WriteU32(0x0708090A)); |
| EXPECT_TRUE(writer.WriteU64(0x0B0C0D0E0F1A2B3Cllu)); |
| EXPECT_EQ(0, memcmp(expected, data, sizeof(expected))); |
| } |
| |
| TEST(BigEndianWriterTest, RespectsLength) { |
| char data[8]; |
| char buf[2]; |
| uint8 u8 = 0; |
| uint16 u16 = 0; |
| uint32 u32 = 0; |
| uint64 u64 = 0; |
| BigEndianWriter writer(data, sizeof(data)); |
| // 8 left |
| EXPECT_FALSE(writer.Skip(9)); |
| EXPECT_TRUE(writer.Skip(1)); |
| // 7 left |
| EXPECT_FALSE(writer.WriteU64(u64)); |
| EXPECT_TRUE(writer.Skip(4)); |
| // 3 left |
| EXPECT_FALSE(writer.WriteU32(u32)); |
| EXPECT_TRUE(writer.Skip(2)); |
| // 1 left |
| EXPECT_FALSE(writer.WriteU16(u16)); |
| EXPECT_FALSE(writer.WriteBytes(buf, 2)); |
| EXPECT_TRUE(writer.Skip(1)); |
| // 0 left |
| EXPECT_FALSE(writer.WriteU8(u8)); |
| EXPECT_EQ(0, writer.remaining()); |
| } |
| |
| } // namespace base |