tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 1 | // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "base/big_endian.h" |
| 6 | |
| 7 | #include "base/strings/string_piece.h" |
| 8 | #include "testing/gtest/include/gtest/gtest.h" |
| 9 | |
| 10 | namespace base { |
| 11 | |
| 12 | TEST(BigEndianReaderTest, ReadsValues) { |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 13 | char data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, |
| 14 | 0x1A, 0x2B, 0x3C, 0x4D, 0x5E }; |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 15 | char buf[2]; |
| 16 | uint8 u8; |
| 17 | uint16 u16; |
| 18 | uint32 u32; |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 19 | uint64 u64; |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 20 | base::StringPiece piece; |
| 21 | BigEndianReader reader(data, sizeof(data)); |
| 22 | |
| 23 | EXPECT_TRUE(reader.Skip(2)); |
| 24 | EXPECT_EQ(data + 2, reader.ptr()); |
| 25 | EXPECT_EQ(reader.remaining(), static_cast<int>(sizeof(data)) - 2); |
| 26 | EXPECT_TRUE(reader.ReadBytes(buf, sizeof(buf))); |
| 27 | EXPECT_EQ(0x2, buf[0]); |
| 28 | EXPECT_EQ(0x3, buf[1]); |
| 29 | EXPECT_TRUE(reader.ReadU8(&u8)); |
| 30 | EXPECT_EQ(0x4, u8); |
| 31 | EXPECT_TRUE(reader.ReadU16(&u16)); |
| 32 | EXPECT_EQ(0x0506, u16); |
| 33 | EXPECT_TRUE(reader.ReadU32(&u32)); |
| 34 | EXPECT_EQ(0x0708090Au, u32); |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 35 | EXPECT_TRUE(reader.ReadU64(&u64)); |
| 36 | EXPECT_EQ(0x0B0C0D0E0F1A2B3Cllu, u64); |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 37 | base::StringPiece expected(reader.ptr(), 2); |
| 38 | EXPECT_TRUE(reader.ReadPiece(&piece, 2)); |
| 39 | EXPECT_EQ(2u, piece.size()); |
| 40 | EXPECT_EQ(expected.data(), piece.data()); |
| 41 | } |
| 42 | |
| 43 | TEST(BigEndianReaderTest, RespectsLength) { |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 44 | char data[8]; |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 45 | char buf[2]; |
| 46 | uint8 u8; |
| 47 | uint16 u16; |
| 48 | uint32 u32; |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 49 | uint64 u64; |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 50 | base::StringPiece piece; |
| 51 | BigEndianReader reader(data, sizeof(data)); |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 52 | // 8 left |
| 53 | EXPECT_FALSE(reader.Skip(9)); |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 54 | EXPECT_TRUE(reader.Skip(1)); |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 55 | // 7 left |
| 56 | EXPECT_FALSE(reader.ReadU64(&u64)); |
| 57 | EXPECT_TRUE(reader.Skip(4)); |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 58 | // 3 left |
| 59 | EXPECT_FALSE(reader.ReadU32(&u32)); |
| 60 | EXPECT_FALSE(reader.ReadPiece(&piece, 4)); |
| 61 | EXPECT_TRUE(reader.Skip(2)); |
| 62 | // 1 left |
| 63 | EXPECT_FALSE(reader.ReadU16(&u16)); |
| 64 | EXPECT_FALSE(reader.ReadBytes(buf, 2)); |
| 65 | EXPECT_TRUE(reader.Skip(1)); |
| 66 | // 0 left |
| 67 | EXPECT_FALSE(reader.ReadU8(&u8)); |
| 68 | EXPECT_EQ(0, reader.remaining()); |
| 69 | } |
| 70 | |
| 71 | TEST(BigEndianWriterTest, WritesValues) { |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 72 | char expected[] = { 0, 0, 2, 3, 4, 5, 6, 7, 8, 9, 0xA, 0xB, 0xC, 0xD, 0xE, |
| 73 | 0xF, 0x1A, 0x2B, 0x3C }; |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 74 | char data[sizeof(expected)]; |
| 75 | char buf[] = { 0x2, 0x3 }; |
| 76 | memset(data, 0, sizeof(data)); |
| 77 | BigEndianWriter writer(data, sizeof(data)); |
| 78 | |
| 79 | EXPECT_TRUE(writer.Skip(2)); |
| 80 | EXPECT_TRUE(writer.WriteBytes(buf, sizeof(buf))); |
| 81 | EXPECT_TRUE(writer.WriteU8(0x4)); |
| 82 | EXPECT_TRUE(writer.WriteU16(0x0506)); |
| 83 | EXPECT_TRUE(writer.WriteU32(0x0708090A)); |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 84 | EXPECT_TRUE(writer.WriteU64(0x0B0C0D0E0F1A2B3Cllu)); |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 85 | EXPECT_EQ(0, memcmp(expected, data, sizeof(expected))); |
| 86 | } |
| 87 | |
| 88 | TEST(BigEndianWriterTest, RespectsLength) { |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 89 | char data[8]; |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 90 | char buf[2]; |
| 91 | uint8 u8 = 0; |
| 92 | uint16 u16 = 0; |
| 93 | uint32 u32 = 0; |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 94 | uint64 u64 = 0; |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 95 | BigEndianWriter writer(data, sizeof(data)); |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 96 | // 8 left |
| 97 | EXPECT_FALSE(writer.Skip(9)); |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 98 | EXPECT_TRUE(writer.Skip(1)); |
benchan@chromium.org | c999340 | 2014-07-31 08:24:48 +0900 | [diff] [blame] | 99 | // 7 left |
| 100 | EXPECT_FALSE(writer.WriteU64(u64)); |
| 101 | EXPECT_TRUE(writer.Skip(4)); |
tfarina@chromium.org | 5e7e673 | 2014-02-27 03:14:57 +0900 | [diff] [blame] | 102 | // 3 left |
| 103 | EXPECT_FALSE(writer.WriteU32(u32)); |
| 104 | EXPECT_TRUE(writer.Skip(2)); |
| 105 | // 1 left |
| 106 | EXPECT_FALSE(writer.WriteU16(u16)); |
| 107 | EXPECT_FALSE(writer.WriteBytes(buf, 2)); |
| 108 | EXPECT_TRUE(writer.Skip(1)); |
| 109 | // 0 left |
| 110 | EXPECT_FALSE(writer.WriteU8(u8)); |
| 111 | EXPECT_EQ(0, writer.remaining()); |
| 112 | } |
| 113 | |
| 114 | } // namespace base |