[BlobAsync] Disk support for blob storage

content/browser/blob_storage/blob_memory_controller_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 "storage/browser/blob/blob_memory_controller.h"
+
+#include "base/bind.h"
+#include "base/files/file_util.h"
+#include "base/test/test_simple_task_runner.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "base/test/test_simple_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
+
+namespace storage {
+namespace {
+
+using FileCreationInfo = BlobMemoryController::FileCreationInfo;
+using base::TestSimpleTaskRunner;
+
+const std::string kBlobStorageDirectory = "blob_storage";
+const size_t kTestBlobStorageMaxBlobMemorySize = 400;
+const size_t kTestBlobStorageMaxMemoryUsage = 500;
+const uint64_t kTestBlobStorageMaxDiskSpace = 1000;
+const size_t kTestBlobStorageInFlightMemory = 10;
+const uint64_t kTestBlobStorageMinFileSizeBytes = 10;
+
+// void SetFileCreationInfo(BlobMemoryController::FileCreationInfo* output,
+//                         const BlobMemoryController::FileCreationInfo& in) {
+//  *output = in;
+//}
+//
+// void SetPointer(bool* out, bool success) {
+//  *out = success;
+//}
+
+class BlobMemoryControllerTest : public testing::Test {
+ protected:
+  BlobMemoryControllerTest() : thread_runner_handle_(io_runner_) {}
+
+  void SetUp() override {
+    ASSERT_EQ(true, base::CreateNewTempDirectory("blob_storage", &temp_dir_));
+  };
+
+  void TearDown() override {
+    files_created_.clear();
+    io_runner_->RunPendingTasks();
+    ASSERT_EQ(true, base::DeleteFile(temp_dir_, true));
+  }
+
+  void SetTestMemoryLimits(BlobMemoryController* controller) {
+    controller->SetMemoryLimits(
+        kTestBlobStorageMaxBlobMemorySize, kTestBlobStorageMaxMemoryUsage,
+        kTestBlobStorageMaxDiskSpace, kTestBlobStorageInFlightMemory,
+        kTestBlobStorageMinFileSizeBytes);
+  }
+
+  void SaveFileCreationInfo(FileCreationInfo info) {
+    files_created_.push_back(std::move(info));
+  }
+
+  base::Callback<void(FileCreationInfo info)> GetFileCreationCallback() {
+    return base::Bind(&BlobMemoryControllerTest::SaveFileCreationInfo,
+                      base::Unretained(this));
+  }
+
+  base::FilePath temp_dir_;
+  std::vector<FileCreationInfo> files_created_;
+
+  scoped_refptr<TestSimpleTaskRunner> file_runner_ = new TestSimpleTaskRunner();
+  scoped_refptr<base::TestSimpleTaskRunner> io_runner_ =
+      new TestSimpleTaskRunner();
+
+  // We set this to the IO thread runner, as this is used for the
+  // OnMemoryRequest calls, which are on that thread.
+  base::ThreadTaskRunnerHandle thread_runner_handle_;
+};
+
+TEST_F(BlobMemoryControllerTest, TestBasicTempFiles) {
+  BlobMemoryController controller;
+  SetTestMemoryLimits(&controller);
+
+  // Check we can't create files.
+  controller.CreateTemporaryFileForRenderer(10ull, GetFileCreationCallback());
+
+  // Check that we can
+  controller.EnableDisk(temp_dir_, file_runner_);
+  controller.CreateTemporaryFileForRenderer(10, GetFileCreationCallback());
+  EXPECT_TRUE(file_runner_->HasPendingTask());
+  file_runner_->RunPendingTasks();
+  EXPECT_TRUE(io_runner_->HasPendingTask());
+  io_runner_->RunPendingTasks();
+
+  LOG(ERROR) << files_created_[1].error;
+}
+
+}  // namespace
+}  // namespace storage