| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // Author: morlovich@google.com (Maksim Orlovich) |
| // |
| // Unit tests for CategorizedRefcount |
| |
| #include "pagespeed/kernel/util/categorized_refcount.h" |
| |
| #include "pagespeed/kernel/base/gtest.h" |
| #include "pagespeed/kernel/base/abstract_mutex.h" |
| #include "pagespeed/kernel/base/scoped_ptr.h" |
| #include "pagespeed/kernel/base/thread_system.h" |
| #include "pagespeed/kernel/util/platform.h" |
| |
| namespace net_instaweb { |
| namespace { |
| |
| class Client { |
| public: |
| enum RefCategory { |
| kRewrites = 0, |
| kFetches, |
| kNumRefCategories |
| }; |
| |
| Client() : last_ref_removed_called_(false) {} |
| |
| bool last_ref_removed_called() const { return last_ref_removed_called_; } |
| |
| private: |
| friend class CategorizedRefcount<Client, Client::RefCategory>; |
| |
| void LastRefRemoved() { last_ref_removed_called_ = true; } |
| |
| StringPiece RefCategoryName(RefCategory cat) { |
| switch (cat) { |
| case kRewrites: |
| return "Rewrites"; |
| case kFetches: |
| return "Fetches"; |
| case kNumRefCategories: |
| default: |
| CHECK(false); |
| return "???"; |
| } |
| } |
| |
| bool last_ref_removed_called_; |
| }; |
| |
| class CategorizedRefcountTest : public testing::Test { |
| protected: |
| CategorizedRefcountTest() |
| : thread_system_(Platform::CreateThreadSystem()), |
| mutex_(thread_system_->NewMutex()), |
| count_(&client_) { |
| count_.set_mutex(mutex_.get()); |
| } |
| |
| scoped_ptr<ThreadSystem> thread_system_; |
| scoped_ptr<AbstractMutex> mutex_; |
| Client client_; |
| CategorizedRefcount< |
| Client, Client::RefCategory> count_; |
| }; |
| |
| TEST_F(CategorizedRefcountTest, Basic) { |
| count_.DCheckAllCountsZero(); |
| |
| count_.AddRef(Client::kRewrites); |
| EXPECT_FALSE(client_.last_ref_removed_called()); |
| EXPECT_EQ("\tRewrites: 1\tFetches: 0", count_.DebugString()); |
| |
| count_.AddRef(Client::kFetches); |
| EXPECT_FALSE(client_.last_ref_removed_called()); |
| EXPECT_EQ("\tRewrites: 1\tFetches: 1", count_.DebugString()); |
| |
| count_.ReleaseRef(Client::kRewrites); |
| EXPECT_FALSE(client_.last_ref_removed_called()); |
| EXPECT_EQ("\tRewrites: 0\tFetches: 1", count_.DebugString()); |
| |
| count_.ReleaseRef(Client::kFetches); |
| EXPECT_TRUE(client_.last_ref_removed_called()); |
| EXPECT_EQ("\tRewrites: 0\tFetches: 0", count_.DebugString()); |
| |
| count_.DCheckAllCountsZero(); |
| } |
| |
| TEST_F(CategorizedRefcountTest, ExternalLock) { |
| ScopedMutex lock(mutex_.get()); |
| count_.DCheckAllCountsZeroMutexHeld(); |
| |
| count_.AddRefMutexHeld(Client::kRewrites); |
| EXPECT_FALSE(client_.last_ref_removed_called()); |
| EXPECT_EQ("\tRewrites: 1\tFetches: 0", count_.DebugStringMutexHeld()); |
| |
| count_.AddRefMutexHeld(Client::kFetches); |
| EXPECT_FALSE(client_.last_ref_removed_called()); |
| EXPECT_EQ("\tRewrites: 1\tFetches: 1", count_.DebugStringMutexHeld()); |
| |
| count_.ReleaseRefMutexHeld(Client::kRewrites); |
| EXPECT_FALSE(client_.last_ref_removed_called()); |
| EXPECT_EQ("\tRewrites: 0\tFetches: 1", count_.DebugStringMutexHeld()); |
| |
| count_.ReleaseRefMutexHeld(Client::kFetches); |
| EXPECT_TRUE(client_.last_ref_removed_called()); |
| EXPECT_EQ("\tRewrites: 0\tFetches: 0", count_.DebugStringMutexHeld()); |
| |
| count_.DCheckAllCountsZeroMutexHeld(); |
| } |
| |
| } // namespace |
| } // namespace net_instaweb |