chrome/browser/metrics/compression_utils_unittest.cc

   1 // Copyright 2013 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 <string>
   6
   7 #include "base/base_paths.h"
   8 #include "base/basictypes.h"
   9 #include "base/file_util.h"
  10 #include "base/path_service.h"
  11 #include "chrome/browser/metrics/compression_utils.h"
  12 #include "chrome/common/chrome_paths.h"
  13 #include "testing/gtest/include/gtest/gtest.h"
  14
  15 namespace {
  16
  17 // The data to be compressed by gzip. This is the hex representation of "hello
  18 // world".
  19 const uint8 kData[] =
  20     {0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f,
  21      0x72, 0x6c, 0x64};
  22
  23 // This is the string representation of gzip compressed string above. It was
  24 // obtained by running echo -n "hello world" | gzip -c | hexdump -e '8 1 ",
  25 // 0x%x"' followed by 0'ing out the OS byte (10th byte) in the header. This is
  26 // so that the test passes on all platforms (that run various OS'es).
  27 const uint8 kCompressedData[] =
  28     {0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  29      0x00, 0xcb, 0x48, 0xcd, 0xc9, 0xc9, 0x57, 0x28, 0xcf,
  30      0x2f, 0xca, 0x49, 0x01, 0x00, 0x85, 0x11, 0x4a, 0x0d,
  31      0x0b, 0x00, 0x00, 0x00};
  32
  33 // Re-enable C4309.
  34 #if defined(OS_WIN)
  35 #pragma warning( default: 4309 )
  36 #endif
  37
  38 TEST(CompressionUtilsTest, GzipCompression) {
  39   std::string data(reinterpret_cast<const char*>(kData), arraysize(kData));
  40   std::string compressed_data;
  41   EXPECT_TRUE(chrome::GzipCompress(data, &compressed_data));
  42   std::string golden_compressed_data(
  43       reinterpret_cast<const char*>(kCompressedData),
  44       arraysize(kCompressedData));
  45   EXPECT_EQ(golden_compressed_data, compressed_data);
  46 }
  47
  48 }  // namespace