[CacheStorage] Temporarily preserve recently opened caches from CacheStorageDispatcherHost

content/browser/cache_storage/cache_storage_unittest.cc

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "content/browser/cache_storage/cache_storage.h"
-
-#include "base/bind.h"
-#include "base/callback.h"
-#include "base/files/scoped_temp_dir.h"
-#include "base/memory/ref_counted.h"
-#include "base/run_loop.h"
-#include "base/stl_util.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "content/browser/cache_storage/cache_storage_cache_handle.h"
-#include "content/browser/quota/mock_quota_manager_proxy.h"
-#include "content/public/test/mock_special_storage_policy.h"
-#include "content/public/test/test_browser_thread_bundle.h"
-#include "net/url_request/url_request_context_getter.h"
-#include "storage/browser/quota/quota_manager_proxy.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace content {
-
-namespace {
-const char kOrigin[] = "http://example.com/";
-}
-
-class TestCacheStorage : public CacheStorage {
- public:
-  TestCacheStorage(
-      const base::FilePath& file_path,
-      scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy)
-      : CacheStorage(file_path,
-                     false /* memory_only */,
-                     base::ThreadTaskRunnerHandle::Get().get(),
-                     scoped_refptr<net::URLRequestContextGetter>(),
-                     quota_manager_proxy,
-                     base::WeakPtr<storage::BlobStorageContext>(),
-                     GURL(kOrigin)),
-        delay_preserved_cache_callback_(false) {}
-
-  void RunPreservedCacheCallback() {
-    ASSERT_FALSE(preserved_cache_callback_.is_null());
-    preserved_cache_callback_.Run();
-    preserved_cache_callback_.Reset();
-  }
-
-  void set_delay_preserved_cache_callback(bool should_delay) {
-    delay_preserved_cache_callback_ = should_delay;
-  }
-
-  bool IsPreservingCache(const CacheStorageCache* cache) {
-    return ContainsKey(preserved_caches_, cache);
-  }
-
- private:
-  void SchedulePreservedCacheRemoval(const base::Closure& callback) override {
-    if (!delay_preserved_cache_callback_) {
-      base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, callback);
-      return;
-    }
-    preserved_cache_callback_ = callback;
-  }
-
-  bool delay_preserved_cache_callback_;
-  base::Closure preserved_cache_callback_;
-};
-
-class CacheStorageTest : public testing::Test {
- protected:
-  CacheStorageTest()
-      : browser_thread_bundle_(TestBrowserThreadBundle::IO_MAINLOOP) {}
-
-  void SetUp() override {
-    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
-
-    quota_policy_ = new MockSpecialStoragePolicy;
-    mock_quota_manager_ = new MockQuotaManager(
-        false /* is incognito */, temp_dir_.path(),
-        base::ThreadTaskRunnerHandle::Get().get(),
-        base::ThreadTaskRunnerHandle::Get().get(), quota_policy_.get());
-    quota_manager_proxy_ = new MockQuotaManagerProxy(
-        mock_quota_manager_.get(), base::ThreadTaskRunnerHandle::Get().get());
-
-    test_cache_storage_.reset(
-        new TestCacheStorage(temp_dir_.path(), quota_manager_proxy_));
-  }
-
-  bool OpenCache(const std::string& cache_name) {
-    bool callback_called = false;
-    test_cache_storage_->OpenCache(
-        cache_name, base::Bind(&CacheStorageTest::OpenCacheCallback,
-                               base::Unretained(this), &callback_called));
-    base::RunLoop().RunUntilIdle();
-    EXPECT_TRUE(callback_called);
-    return callback_error_ == CACHE_STORAGE_OK;
-  }
-
-  void OpenCacheCallback(bool* callback_called,
-                         std::unique_ptr<CacheStorageCacheHandle> cache_handle,
-                         CacheStorageError error) {
-    *callback_called = true;
-    callback_cache_handle_ = std::move(cache_handle);
-    callback_error_ = error;
-  }
-
-  base::ScopedTempDir temp_dir_;
-  TestBrowserThreadBundle browser_thread_bundle_;
-  scoped_refptr<MockSpecialStoragePolicy> quota_policy_;
-  scoped_refptr<MockQuotaManager> mock_quota_manager_;
-  scoped_refptr<MockQuotaManagerProxy> quota_manager_proxy_;
-  std::unique_ptr<TestCacheStorage> test_cache_storage_;
-
-  std::unique_ptr<CacheStorageCacheHandle> callback_cache_handle_;
-  CacheStorageError callback_error_;
-};
-
-TEST_F(CacheStorageTest, PreserveCache) {
-  test_cache_storage_->set_delay_preserved_cache_callback(true);
-  EXPECT_TRUE(OpenCache("foo"));
-  EXPECT_TRUE(
-      test_cache_storage_->IsPreservingCache(callback_cache_handle_->value()));
-  test_cache_storage_->RunPreservedCacheCallback();
-  EXPECT_FALSE(
-      test_cache_storage_->IsPreservingCache(callback_cache_handle_->value()));
-
-  // Try opening it again, since the cache is already open
-  // (callback_cache_handle_ is referencing it) the cache shouldn't be preserved
-  // again.
-  EXPECT_TRUE(OpenCache("foo"));
-  EXPECT_FALSE(
-      test_cache_storage_->IsPreservingCache(callback_cache_handle_->value()));
-
-  // Remove the reference to the cache so that it's deleted. After that, the
-  // next time it's opened will require the cache to be created again and
-  // preserved.
-  callback_cache_handle_.reset();
-  EXPECT_TRUE(OpenCache("foo"));
-  EXPECT_TRUE(
-      test_cache_storage_->IsPreservingCache(callback_cache_handle_->value()));
-  test_cache_storage_->RunPreservedCacheCallback();
-  EXPECT_FALSE(
-      test_cache_storage_->IsPreservingCache(callback_cache_handle_->value()));
-}
-
-}  // namespace content