Quota: Implement QuotaBackendImpl

webkit/browser/fileapi/quota/quota_backend_impl_unittest.cc

Index: webkit/browser/fileapi/quota/quota_backend_impl_unittest.cc
diff --git a/webkit/browser/fileapi/quota/quota_backend_impl_unittest.cc b/webkit/browser/fileapi/quota/quota_backend_impl_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..bd1483aecd47130c63e2135a9e800dc9561b18c6
--- /dev/null
+++ b/webkit/browser/fileapi/quota/quota_backend_impl_unittest.cc
@@ -0,0 +1,243 @@
+// Copyright 2013 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 "webkit/browser/fileapi/quota/quota_backend_impl.h"
+
+#include "base/files/scoped_temp_dir.h"
+#include "base/message_loop/message_loop.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "webkit/browser/fileapi/file_system_usage_cache.h"
+#include "webkit/browser/fileapi/obfuscated_file_util.h"
+#include "webkit/browser/quota/quota_manager.h"
+
+namespace fileapi {
+
+namespace {
+
+const char kOrigin[] = "http://example.com";
+
+bool DidReserveQuota(bool accepted,
+                     base::PlatformFileError* error_out,
+                     base::PlatformFileError error) {
+  DCHECK(error_out);
+  *error_out = error;
+  return accepted;
+}
+
+class MockQuotaManagerProxy : public quota::QuotaManagerProxy {
+ public:
+  MockQuotaManagerProxy()
+      : QuotaManagerProxy(NULL, NULL),
+        storage_modified_count_(0),
+        usage_(0), quota_(0) {}
+
+  // We don't mock them.
+  virtual void NotifyOriginInUse(const GURL& origin) OVERRIDE {}
+  virtual void NotifyOriginNoLongerInUse(const GURL& origin) OVERRIDE {}
+  virtual void SetUsageCacheEnabled(quota::QuotaClient::ID client_id,
+                                    const GURL& origin,
+                                    quota::StorageType type,
+                                    bool enabled) OVERRIDE {}
+
+  virtual void NotifyStorageModified(
+      quota::QuotaClient::ID client_id,
+      const GURL& origin,
+      quota::StorageType type,
+      int64 delta) OVERRIDE {
+    ++storage_modified_count_;
+    usage_ += delta;
+    ASSERT_LT(usage_, quota_);
+  }
+
+  virtual void GetUsageAndQuota(
+      base::SequencedTaskRunner* original_task_runner,
+      const GURL& origin,
+      quota::StorageType type,
+      const GetUsageAndQuotaCallback& callback) OVERRIDE {
+    callback.Run(quota::kQuotaStatusOk, usage_, quota_);
+  }
+
+  int storage_modified_count() { return storage_modified_count_; }
+  int64 usage() { return usage_; }
+  void set_usage(int64 usage) { usage_ = usage; }
+  void set_quota(int64 quota) { quota_ = quota; }
+
+ protected:
+  virtual ~MockQuotaManagerProxy() {}
+
+ private:
+  int storage_modified_count_;
+  int64 usage_;
+  int64 quota_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockQuotaManagerProxy);
+};
+
+}  // namespace
+
+class QuotaBackendImplTest : public testing::Test {
+ public:
+  QuotaBackendImplTest()
+      : file_system_usage_cache_(file_task_runner()),
+        quota_manager_proxy_(new MockQuotaManagerProxy) {}
+
+  virtual void SetUp() OVERRIDE {
+    ASSERT_TRUE(data_dir_.CreateUniqueTempDir());
+    file_util_.reset(ObfuscatedFileUtil::CreateForTesting(
+        NULL, data_dir_.path(), file_task_runner()));
+    backend_.reset(new QuotaBackendImpl(file_task_runner(),
+                                        file_util_.get(),
+                                        &file_system_usage_cache_,
+                                        quota_manager_proxy_.get()));
+  }
+
+  virtual void TearDown() OVERRIDE {
+    backend_.reset();
+    quota_manager_proxy_ = NULL;
+    file_util_.reset();
+    message_loop_.RunUntilIdle();
+  }
+
+ protected:
+  void InitializeForOriginAndType(const GURL& origin, FileSystemType type) {
+    file_util_->InitOriginDatabase(origin, true /* create */);
+    ASSERT_TRUE(file_util_->origin_database_ != NULL);
+
+    std::string type_string =
+        SandboxFileSystemBackendDelegate::GetTypeString(type);
+    base::PlatformFileError error = base::PLATFORM_FILE_ERROR_FAILED;
+    base::FilePath path = file_util_->GetDirectoryForOriginAndType(
+        origin, type_string, true /* create */, &error);
+    ASSERT_EQ(base::PLATFORM_FILE_OK, error);
+    file_system_usage_cache_.UpdateUsage(GetUsageCachePath(origin, type), 0);
+  }
+
+  base::SequencedTaskRunner* file_task_runner() {
+    return base::MessageLoopProxy::current().get();
+  }
+
+  base::FilePath GetUsageCachePath(const GURL& origin, FileSystemType type) {
+    base::FilePath path;
+    DCHECK_EQ(base::PLATFORM_FILE_OK,
+              backend_->GetUsageCachePath(origin, type, &path));
+    DCHECK(!path.empty());
+    return path;
+  }
+
+  base::MessageLoop message_loop_;
+  base::ScopedTempDir data_dir_;
+  scoped_ptr<ObfuscatedFileUtil> file_util_;
+  FileSystemUsageCache file_system_usage_cache_;
+  scoped_refptr<MockQuotaManagerProxy> quota_manager_proxy_;
+  scoped_ptr<QuotaBackendImpl> backend_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(QuotaBackendImplTest);
+};
+
+TEST_F(QuotaBackendImplTest, ReserveQuota_Basic) {
+  FileSystemType type = fileapi::kFileSystemTypeTemporary;
+  InitializeForOriginAndType(GURL(kOrigin), type);
+  quota_manager_proxy_->set_quota(10000);
+
+  const int64 kDelta1 = 1000;
+  base::PlatformFileError error = base::PLATFORM_FILE_ERROR_FAILED;
+  backend_->ReserveQuota(GURL(kOrigin), type, kDelta1,
+                         base::Bind(&DidReserveQuota, true, &error));
+  EXPECT_EQ(base::PLATFORM_FILE_OK, error);
+  EXPECT_EQ(kDelta1, quota_manager_proxy_->usage());
+
+  const int64 kDelta2 = -300;
+  error = base::PLATFORM_FILE_ERROR_FAILED;
+  backend_->ReserveQuota(GURL(kOrigin), type, kDelta2,
+                         base::Bind(&DidReserveQuota, true, &error));
+  EXPECT_EQ(base::PLATFORM_FILE_OK, error);
+  EXPECT_EQ(kDelta1 + kDelta2, quota_manager_proxy_->usage());
+
+  EXPECT_EQ(2, quota_manager_proxy_->storage_modified_count());
+}
+
+TEST_F(QuotaBackendImplTest, ReserveQuota_NoSpace) {
+  FileSystemType type = fileapi::kFileSystemTypeTemporary;
+  InitializeForOriginAndType(GURL(kOrigin), type);
+  quota_manager_proxy_->set_quota(100);
+
+  const int64 kDelta = 1000;
+  base::PlatformFileError error = base::PLATFORM_FILE_ERROR_FAILED;
+  backend_->ReserveQuota(GURL(kOrigin), type, kDelta,
+                         base::Bind(&DidReserveQuota, true, &error));
+  EXPECT_EQ(base::PLATFORM_FILE_ERROR_NO_SPACE, error);
+  EXPECT_EQ(0, quota_manager_proxy_->usage());
+
+  EXPECT_EQ(0, quota_manager_proxy_->storage_modified_count());
+}
+
+TEST_F(QuotaBackendImplTest, ReserveQuota_Revert) {
+  FileSystemType type = fileapi::kFileSystemTypeTemporary;
+  InitializeForOriginAndType(GURL(kOrigin), type);
+  quota_manager_proxy_->set_quota(10000);
+
+  const int64 kDelta = 1000;
+  base::PlatformFileError error = base::PLATFORM_FILE_ERROR_FAILED;
+  backend_->ReserveQuota(GURL(kOrigin), type, kDelta,
+                         base::Bind(&DidReserveQuota, false, &error));
+  EXPECT_EQ(base::PLATFORM_FILE_OK, error);
+  EXPECT_EQ(0, quota_manager_proxy_->usage());
+
+  EXPECT_EQ(2, quota_manager_proxy_->storage_modified_count());
+}
+
+TEST_F(QuotaBackendImplTest, ReleaseReservedQuota) {
+  FileSystemType type = fileapi::kFileSystemTypeTemporary;
+  InitializeForOriginAndType(GURL(kOrigin), type);
+  const int64 kInitialUsage = 2000;
+  quota_manager_proxy_->set_usage(kInitialUsage);
+  quota_manager_proxy_->set_quota(10000);
+
+  const int64 kSize = 1000;
+  backend_->ReleaseReservedQuota(GURL(kOrigin), type, kSize);
+  EXPECT_EQ(kInitialUsage - kSize, quota_manager_proxy_->usage());
+
+  EXPECT_EQ(1, quota_manager_proxy_->storage_modified_count());
+}
+
+TEST_F(QuotaBackendImplTest, CommitQuotaUsage) {
+  FileSystemType type = fileapi::kFileSystemTypeTemporary;
+  InitializeForOriginAndType(GURL(kOrigin), type);
+  quota_manager_proxy_->set_quota(10000);
+  base::FilePath path = GetUsageCachePath(GURL(kOrigin), type);
+
+  const int64 kDelta1 = 1000;
+  backend_->CommitQuotaUsage(GURL(kOrigin), type, kDelta1);
+  EXPECT_EQ(kDelta1, quota_manager_proxy_->usage());
+  int64 usage = 0;
+  EXPECT_TRUE(file_system_usage_cache_.GetUsage(path, &usage));
+  EXPECT_EQ(kDelta1, usage);
+
+  const int64 kDelta2 = -300;
+  backend_->CommitQuotaUsage(GURL(kOrigin), type, kDelta2);
+  EXPECT_EQ(kDelta1 + kDelta2, quota_manager_proxy_->usage());
+  usage = 0;
+  EXPECT_TRUE(file_system_usage_cache_.GetUsage(path, &usage));
+  EXPECT_EQ(kDelta1 + kDelta2, usage);
+
+  EXPECT_EQ(2, quota_manager_proxy_->storage_modified_count());
+}
+
+TEST_F(QuotaBackendImplTest, DirtyCount) {
+  FileSystemType type = fileapi::kFileSystemTypeTemporary;
+  InitializeForOriginAndType(GURL(kOrigin), type);
+  base::FilePath path = GetUsageCachePath(GURL(kOrigin), type);
+
+  backend_->IncrementDirtyCount(GURL(kOrigin), type);
+  uint32 dirty = 0;
+  ASSERT_TRUE(file_system_usage_cache_.GetDirty(path, &dirty));
+  EXPECT_EQ(1u, dirty);
+
+  backend_->DecrementDirtyCount(GURL(kOrigin), type);
+  ASSERT_TRUE(file_system_usage_cache_.GetDirty(path, &dirty));
+  EXPECT_EQ(0u, dirty);
+}
+
+}  // namespace fileapi