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| 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 "components/compression/compression_utils.h" | |
| 6 | |
| 7 #include <stddef.h> | |
| 8 #include <stdint.h> | |
| 9 | |
| 10 #include <string> | |
| 11 | |
| 12 #include "base/logging.h" | |
| 13 #include "base/macros.h" | |
| 14 #include "testing/gtest/include/gtest/gtest.h" | |
| 15 | |
| 16 namespace compression { | |
| 17 | |
| 18 namespace { | |
| 19 | |
| 20 // The data to be compressed by gzip. This is the hex representation of "hello | |
| 21 // world". | |
| 22 const uint8_t kData[] = {0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, | |
| 23 0x77, 0x6f, 0x72, 0x6c, 0x64}; | |
| 24 | |
| 25 // This is the string representation of gzip compressed string above. It was | |
| 26 // obtained by running echo -n "hello world" | gzip -c | hexdump -e '8 1 ", | |
| 27 // 0x%x"' followed by 0'ing out the OS byte (10th byte) in the header. This is | |
| 28 // so that the test passes on all platforms (that run various OS'es). | |
| 29 const uint8_t kCompressedData[] = { | |
| 30 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xcb, | |
| 31 0x48, 0xcd, 0xc9, 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0x01, | |
| 32 0x00, 0x85, 0x11, 0x4a, 0x0d, 0x0b, 0x00, 0x00, 0x00}; | |
| 33 | |
| 34 } // namespace | |
| 35 | |
| 36 TEST(CompressionUtilsTest, GzipCompression) { | |
| 37 std::string data(reinterpret_cast<const char*>(kData), arraysize(kData)); | |
| 38 std::string compressed_data; | |
| 39 EXPECT_TRUE(GzipCompress(data, &compressed_data)); | |
| 40 std::string golden_compressed_data( | |
| 41 reinterpret_cast<const char*>(kCompressedData), | |
| 42 arraysize(kCompressedData)); | |
| 43 EXPECT_EQ(golden_compressed_data, compressed_data); | |
| 44 } | |
| 45 | |
| 46 TEST(CompressionUtilsTest, GzipUncompression) { | |
| 47 std::string compressed_data(reinterpret_cast<const char*>(kCompressedData), | |
| 48 arraysize(kCompressedData)); | |
| 49 | |
| 50 std::string uncompressed_data; | |
| 51 EXPECT_TRUE(GzipUncompress(compressed_data, &uncompressed_data)); | |
| 52 | |
| 53 std::string golden_data(reinterpret_cast<const char*>(kData), | |
| 54 arraysize(kData)); | |
| 55 EXPECT_EQ(golden_data, uncompressed_data); | |
| 56 } | |
| 57 | |
| 58 // Checks that compressing/decompressing input > 256 bytes works as expected. | |
| 59 TEST(CompressionUtilsTest, LargeInput) { | |
| 60 const size_t kSize = 32 * 1024; | |
| 61 | |
| 62 // Generate a data string of |kSize| for testing. | |
| 63 std::string data; | |
| 64 data.resize(kSize); | |
| 65 for (size_t i = 0; i < kSize; ++i) | |
| 66 data[i] = static_cast<char>(i & 0xFF); | |
| 67 | |
| 68 std::string compressed_data; | |
| 69 EXPECT_TRUE(GzipCompress(data, &compressed_data)); | |
| 70 | |
| 71 std::string uncompressed_data; | |
| 72 EXPECT_TRUE(GzipUncompress(compressed_data, &uncompressed_data)); | |
| 73 | |
| 74 EXPECT_EQ(data, uncompressed_data); | |
| 75 } | |
| 76 | |
| 77 TEST(CompressionUtilsTest, InPlace) { | |
| 78 const std::string original_data(reinterpret_cast<const char*>(kData), | |
| 79 arraysize(kData)); | |
| 80 const std::string golden_compressed_data( | |
| 81 reinterpret_cast<const char*>(kCompressedData), | |
| 82 arraysize(kCompressedData)); | |
| 83 | |
| 84 std::string data(original_data); | |
| 85 EXPECT_TRUE(GzipCompress(data, &data)); | |
| 86 EXPECT_EQ(golden_compressed_data, data); | |
| 87 EXPECT_TRUE(GzipUncompress(data, &data)); | |
| 88 EXPECT_EQ(original_data, data); | |
| 89 } | |
| 90 | |
| 91 } // namespace compression | |
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Chromium Code Reviews
Issue 1389383003:
WIP: Introduce CompressibleString
Base URL: https://chromium.googlesource.com/chromium/src.git@master