1    :  // Copyright 2012 Google Inc. All Rights Reserved.
   2    :  //
   3    :  // Licensed under the Apache License, Version 2.0 (the "License");
   4    :  // you may not use this file except in compliance with the License.
   5    :  // You may obtain a copy of the License at
   6    :  //
   7    :  //     http://www.apache.org/licenses/LICENSE-2.0
   8    :  //
   9    :  // Unless required by applicable law or agreed to in writing, software
  10    :  // distributed under the License is distributed on an "AS IS" BASIS,
  11    :  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12    :  // See the License for the specific language governing permissions and
  13    :  // limitations under the License.
  14    :  
  15    :  #include "syzygy/msf/msf_file.h"
  16    :  
  17    :  #include <memory>
  18    :  
  19    :  #include "gmock/gmock.h"
  20    :  #include "gtest/gtest.h"
  21    :  
  22    :  namespace msf {
  23    :  
  24    :  namespace {
  25    :  
  26    :  class DummyMsfStream : public MsfStream {
  27    :   public:
  28  E :    DummyMsfStream() : MsfStream(10) { ++instance_count_; }
  29    :  
  30  i :    bool ReadBytesAt(size_t pos, size_t count, void* dest) override {
  31  i :      return false;
  32  i :    }
  33    :  
  34  E :    static size_t instance_count() { return instance_count_; }
  35    :  
  36    :   protected:
  37  E :    virtual ~DummyMsfStream() { --instance_count_; }
  38    :  
  39    :    static size_t instance_count_;
  40    :  };
  41    :  
  42    :  size_t DummyMsfStream::instance_count_;
  43    :  
  44    :  }  // namespace
  45    :  
  46  E :  TEST(MsfFileTest, Clear) {
  47  E :    MsfFile msf_file;
  48  E :    EXPECT_EQ(0u, msf_file.StreamCount());
  49  E :    EXPECT_EQ(0u, DummyMsfStream::instance_count());
  50    :  
  51  E :    msf_file.AppendStream(new DummyMsfStream());
  52  E :    EXPECT_EQ(1u, msf_file.StreamCount());
  53  E :    EXPECT_EQ(1u, DummyMsfStream::instance_count());
  54    :  
  55  E :    msf_file.AppendStream(new DummyMsfStream());
  56  E :    EXPECT_EQ(2u, msf_file.StreamCount());
  57  E :    EXPECT_EQ(2u, DummyMsfStream::instance_count());
  58    :  
  59  E :    msf_file.SetStream(100, new DummyMsfStream());
  60  E :    EXPECT_EQ(101u, msf_file.StreamCount());
  61  E :    EXPECT_TRUE(msf_file.GetStream(99) == NULL);
  62  E :    EXPECT_EQ(3u, DummyMsfStream::instance_count());
  63    :  
  64  E :    msf_file.Clear();
  65  E :    EXPECT_EQ(0u, msf_file.StreamCount());
  66  E :    EXPECT_EQ(0u, DummyMsfStream::instance_count());
  67  E :  }
  68    :  
  69  E :  TEST(MsfFileTest, WorksAsExpected) {
  70  E :    std::unique_ptr<MsfFile> msf(new MsfFile());
  71  E :    EXPECT_EQ(0u, msf->StreamCount());
  72  E :    EXPECT_EQ(0u, DummyMsfStream::instance_count());
  73    :  
  74  E :    scoped_refptr<MsfStream> stream(new DummyMsfStream());
  75  E :    EXPECT_EQ(1u, DummyMsfStream::instance_count());
  76  E :    size_t index0 = msf->AppendStream(stream.get());
  77  E :    EXPECT_EQ(0u, index0);
  78  E :    EXPECT_EQ(1u, msf->StreamCount());
  79  E :    EXPECT_EQ(stream.get(), msf->GetStream(index0));
  80    :  
  81  E :    stream = new DummyMsfStream();
  82  E :    EXPECT_EQ(2u, DummyMsfStream::instance_count());
  83  E :    size_t index1 = msf->AppendStream(stream.get());
  84  E :    EXPECT_EQ(1u, index1);
  85  E :    EXPECT_EQ(2u, msf->StreamCount());
  86  E :    EXPECT_EQ(stream.get(), msf->GetStream(index1));
  87  E :    MsfStream* stream1 = stream.get();
  88    :  
  89  E :    stream = new DummyMsfStream();
  90  E :    EXPECT_EQ(3u, DummyMsfStream::instance_count());
  91  E :    msf->ReplaceStream(index0, stream.get());
  92  E :    EXPECT_EQ(2u, DummyMsfStream::instance_count());
  93  E :    EXPECT_EQ(2u, msf->StreamCount());
  94  E :    EXPECT_EQ(stream.get(), msf->GetStream(index0));
  95  E :    MsfStream* stream0 = stream.get();
  96  E :    stream = NULL;
  97    :  
  98  E :    EXPECT_EQ(stream0, msf->GetStream(0));
  99  E :    EXPECT_EQ(stream1, msf->GetStream(1));
 100    :  
 101  E :    msf.reset(NULL);
 102  E :    EXPECT_EQ(0u, DummyMsfStream::instance_count());
 103  E :  }
 104    :  
 105    :  }  // namespace msf