courgette/versioning_unittest.cc

   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 "courgette/base_test_unittest.h"
   6
   7 #include <string>
   8
   9 #include "base/basictypes.h"
  10 #include "courgette/courgette.h"
  11 #include "courgette/streams.h"
  12 #include "courgette/third_party/bsdiff.h"
  13
  14 class VersioningTest : public BaseTest {
  15  public:
  16   void TestApplyingOldBsDiffPatch(const char* src_file,
  17                                   const char* patch_file,
  18                                   const char* expected_file) const;
  19 };
  20
  21 void VersioningTest::TestApplyingOldBsDiffPatch(
  22     const char* src_file,
  23     const char* patch_file,
  24     const char* expected_file) const {
  25   std::string old_buffer = FileContents(src_file);
  26   std::string new_buffer = FileContents(patch_file);
  27   std::string expected_buffer = FileContents(expected_file);
  28
  29   courgette::SourceStream old_stream;
  30   courgette::SourceStream patch_stream;
  31   old_stream.Init(old_buffer);
  32   patch_stream.Init(new_buffer);
  33
  34   courgette::SinkStream generated_stream;
  35
  36   courgette::BSDiffStatus status = courgette::ApplyBinaryPatch(
  37       &old_stream, &patch_stream, &generated_stream);
  38
  39   EXPECT_EQ(status, courgette::OK);
  40
  41   size_t expected_length = expected_buffer.size();
  42   size_t generated_length = generated_stream.Length();
  43
  44   EXPECT_EQ(generated_length, expected_length);
  45   EXPECT_EQ(0, memcmp(generated_stream.Buffer(),
  46                       expected_buffer.c_str(),
  47                       expected_length));
  48 }
  49
  50 TEST_F(VersioningTest, BsDiff) {
  51   TestApplyingOldBsDiffPatch("setup1.exe", "setup1-setup2.v1.bsdiff",
  52                              "setup2.exe");
  53   TestApplyingOldBsDiffPatch("chrome64_1.exe", "chrome64-1-2.v1.bsdiff",
  54                              "chrome64_2.exe");
  55
  56   // We also need a way to test that newly generated patches are appropriately
  57   // applicable by older clients... not sure of the best way to do that.
  58 }