1 // Copyright (c) 2011 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/strings/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 100 101
