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| 1 // Copyright (c) 2009 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/string_piece.h" |
| 6 #include "net/base/big_endian.h" |
| 7 #include "testing/gtest/include/gtest/gtest.h" |
| 8 |
| 9 namespace net { |
| 10 |
| 11 TEST(BigEndianReaderTest, ReadsValues) { |
| 12 char data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xA, 0xB, 0xC }; |
| 13 char buf[2]; |
| 14 uint8 u8; |
| 15 uint16 u16; |
| 16 uint32 u32; |
| 17 base::StringPiece piece; |
| 18 BigEndianReader reader(data, sizeof(data)); |
| 19 |
| 20 EXPECT_TRUE(reader.Skip(2)); |
| 21 EXPECT_EQ(data + 2, reader.ptr()); |
| 22 EXPECT_EQ(reader.remaining(), static_cast<int>(sizeof(data)) - 2); |
| 23 EXPECT_TRUE(reader.ReadBytes(buf, sizeof(buf))); |
| 24 EXPECT_EQ(0x2, buf[0]); |
| 25 EXPECT_EQ(0x3, buf[1]); |
| 26 EXPECT_TRUE(reader.ReadU8(&u8)); |
| 27 EXPECT_EQ(0x4, u8); |
| 28 EXPECT_TRUE(reader.ReadU16(&u16)); |
| 29 EXPECT_EQ(0x0506, u16); |
| 30 EXPECT_TRUE(reader.ReadU32(&u32)); |
| 31 EXPECT_EQ(0x0708090Au, u32); |
| 32 base::StringPiece expected(reader.ptr(), 2); |
| 33 EXPECT_TRUE(reader.ReadPiece(&piece, 2)); |
| 34 EXPECT_EQ(2u, piece.size()); |
| 35 EXPECT_EQ(expected.data(), piece.data()); |
| 36 } |
| 37 |
| 38 TEST(BigEndianReaderTest, RespectsLength) { |
| 39 char data[4]; |
| 40 char buf[2]; |
| 41 uint8 u8; |
| 42 uint16 u16; |
| 43 uint32 u32; |
| 44 base::StringPiece piece; |
| 45 BigEndianReader reader(data, sizeof(data)); |
| 46 // 4 left |
| 47 EXPECT_FALSE(reader.Skip(6)); |
| 48 EXPECT_TRUE(reader.Skip(1)); |
| 49 // 3 left |
| 50 EXPECT_FALSE(reader.ReadU32(&u32)); |
| 51 EXPECT_FALSE(reader.ReadPiece(&piece, 4)); |
| 52 EXPECT_TRUE(reader.Skip(2)); |
| 53 // 1 left |
| 54 EXPECT_FALSE(reader.ReadU16(&u16)); |
| 55 EXPECT_FALSE(reader.ReadBytes(buf, 2)); |
| 56 EXPECT_TRUE(reader.Skip(1)); |
| 57 // 0 left |
| 58 EXPECT_FALSE(reader.ReadU8(&u8)); |
| 59 EXPECT_EQ(0, reader.remaining()); |
| 60 } |
| 61 |
| 62 TEST(BigEndianWriterTest, WritesValues) { |
| 63 char expected[] = { 0, 0, 2, 3, 4, 5, 6, 7, 8, 9, 0xA }; |
| 64 char data[sizeof(expected)]; |
| 65 char buf[] = { 0x2, 0x3 }; |
| 66 memset(data, 0, sizeof(data)); |
| 67 BigEndianWriter writer(data, sizeof(data)); |
| 68 |
| 69 EXPECT_TRUE(writer.Skip(2)); |
| 70 EXPECT_TRUE(writer.WriteBytes(buf, sizeof(buf))); |
| 71 EXPECT_TRUE(writer.WriteU8(0x4)); |
| 72 EXPECT_TRUE(writer.WriteU16(0x0506)); |
| 73 EXPECT_TRUE(writer.WriteU32(0x0708090A)); |
| 74 EXPECT_EQ(0, memcmp(expected, data, sizeof(expected))); |
| 75 } |
| 76 |
| 77 TEST(BigEndianWriterTest, RespectsLength) { |
| 78 char data[4]; |
| 79 char buf[2]; |
| 80 uint8 u8 = 0; |
| 81 uint16 u16 = 0; |
| 82 uint32 u32 = 0; |
| 83 BigEndianWriter writer(data, sizeof(data)); |
| 84 // 4 left |
| 85 EXPECT_FALSE(writer.Skip(6)); |
| 86 EXPECT_TRUE(writer.Skip(1)); |
| 87 // 3 left |
| 88 EXPECT_FALSE(writer.WriteU32(u32)); |
| 89 EXPECT_TRUE(writer.Skip(2)); |
| 90 // 1 left |
| 91 EXPECT_FALSE(writer.WriteU16(u16)); |
| 92 EXPECT_FALSE(writer.WriteBytes(buf, 2)); |
| 93 EXPECT_TRUE(writer.Skip(1)); |
| 94 // 0 left |
| 95 EXPECT_FALSE(writer.WriteU8(u8)); |
| 96 EXPECT_EQ(0, writer.remaining()); |
| 97 } |
| 98 |
| 99 } // namespace net |
| 100 |
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