text: /*
   *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
   *
   *  Use of this source code is governed by a BSD-style license
   *  that can be found in the LICENSE file in the root of the source
   *  tree. An additional intellectual property rights grant can be found
   *  in the file PATENTS.  All contributing project authors may
   *  be found in the AUTHORS file in the root of the source tree.
   */
  
  #include "webrtc/base/scopedptrcollection.h"
  #include "webrtc/base/gunit.h"
  
  namespace rtc {
  
  namespace {
  
  class InstanceCounter {
   public:
    explicit InstanceCounter(int* num_instances)
        : num_instances_(num_instances) {
      ++(*num_instances_);
    }
    ~InstanceCounter() {
      --(*num_instances_);
    }
  
   private:
    int* num_instances_;
  
    RTC_DISALLOW_COPY_AND_ASSIGN(InstanceCounter);
  };
  
  }  // namespace
  
  class ScopedPtrCollectionTest : public testing::Test {
   protected:
    ScopedPtrCollectionTest()
        : num_instances_(0),
        collection_(new ScopedPtrCollection<InstanceCounter>()) {
    }
  
    int num_instances_;
    scoped_ptr<ScopedPtrCollection<InstanceCounter> > collection_;
  };
  
  TEST_F(ScopedPtrCollectionTest, PushBack) {
    EXPECT_EQ(0u, collection_->collection().size());
    EXPECT_EQ(0, num_instances_);
    const int kNum = 100;
    for (int i = 0; i < kNum; ++i) {
      collection_->PushBack(new InstanceCounter(&num_instances_));
    }
    EXPECT_EQ(static_cast<size_t>(kNum), collection_->collection().size());
    EXPECT_EQ(kNum, num_instances_);
    collection_.reset();
    EXPECT_EQ(0, num_instances_);
  }
  
  TEST_F(ScopedPtrCollectionTest, Remove) {
    InstanceCounter* ic = new InstanceCounter(&num_instances_);
    collection_->PushBack(ic);
    EXPECT_EQ(1u, collection_->collection().size());
    collection_->Remove(ic);
    EXPECT_EQ(1, num_instances_);
    collection_.reset();
    EXPECT_EQ(1, num_instances_);
    delete ic;
    EXPECT_EQ(0, num_instances_);
  }
  
  
  }  // namespace rtc
  