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
  13 class VersioningTest : public BaseTest {
  14  public:
  15   void TestApplyingOldPatch(const char* src_file,
  16                             const char* patch_file,
  17                             const char* expected_file) const;
  18 };
  19
  20 void VersioningTest::TestApplyingOldPatch(const char* src_file,
  21                                           const char* patch_file,
  22                                           const char* expected_file) const {
  23   std::string old_buffer = FileContents(src_file);
  24   std::string new_buffer = FileContents(patch_file);
  25   std::string expected_buffer = FileContents(expected_file);
  26
  27   courgette::SourceStream old_stream;
  28   courgette::SourceStream patch_stream;
  29   old_stream.Init(old_buffer);
  30   patch_stream.Init(new_buffer);
  31
  32   courgette::SinkStream generated_stream;
  33
  34   courgette::Status status =
  35       courgette::ApplyEnsemblePatch(&old_stream,
  36                                     &patch_stream,
  37                                     &generated_stream);
  38
  39   EXPECT_EQ(status, courgette::C_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
  51 TEST_F(VersioningTest, All) {
  52   TestApplyingOldPatch("setup1.exe", "setup1-setup2.v1.patch", "setup2.exe");
  53
  54   // We also need a way to test that newly generated patches are appropriately
  55   // applicable by older clients... not sure of the best way to do that.
  56 }