Initial implementation of the ByteStream refactor.

content/browser/download/download_manager_impl_unittest.cc

 // Copyright (c) 2012 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 <set>
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/scoped_temp_dir.h"
 #include "base/stl_util.h"
 #include "base/string16.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "build/build_config.h"
-#include "content/browser/download/download_buffer.h"
 #include "content/browser/download/download_create_info.h"
 #include "content/browser/download/download_file_impl.h"
 #include "content/browser/download/download_file_manager.h"
 #include "content/browser/download/download_manager_impl.h"
 #include "content/browser/download/download_request_handle.h"
 #include "content/browser/download/mock_download_file.h"
 #include "content/public/browser/download_interrupt_reasons.h"
 #include "content/public/browser/download_item.h"
 #include "content/public/browser/download_manager_delegate.h"
 #include "content/test/mock_download_manager.h"
@@ skipping 181 matching lines @@
  public:
   static const char* kTestData;
   static const size_t kTestDataLen;
 
   DownloadManagerTest()
       : browser_context(new TestBrowserContext()),
         download_manager_delegate_(new TestDownloadManagerDelegate()),
         download_manager_(new DownloadManagerImpl(
             download_manager_delegate_.get(), NULL)),
         ui_thread_(BrowserThread::UI, &message_loop_),
-        file_thread_(BrowserThread::FILE, &message_loop_),
-        download_buffer_(new content::DownloadBuffer) {
+        file_thread_(BrowserThread::FILE, &message_loop_) {
     download_manager_->Init(browser_context.get());
     download_manager_delegate_->set_download_manager(download_manager_);
   }
 
   ~DownloadManagerTest() {
     download_manager_->Shutdown();
     // browser_context must outlive download_manager_, so we explicitly delete
     // download_manager_ first.
     download_manager_ = NULL;
     download_manager_delegate_.reset();
@@ skipping 18 matching lines @@
   }
 
   void FileSelected(const FilePath& path, int32 download_id) {
     download_manager_->FileSelected(path, download_id);
   }
 
   void ContinueDownloadWithPath(DownloadItem* download, const FilePath& path) {
     download_manager_->ContinueDownloadWithPath(download, path);
   }
 
-  void UpdateData(int32 id, const char* data, size_t length) {
-    // We are passing ownership of this buffer to the download file manager.
-    net::IOBuffer* io_buffer = new net::IOBuffer(length);
-    // We need |AddRef()| because we do a |Release()| in |UpdateDownload()|.
-    io_buffer->AddRef();
-    memcpy(io_buffer->data(), data, length);
-
-    download_buffer_->AddData(io_buffer, length);
-
-    BrowserThread::PostTask(
-        BrowserThread::FILE, FROM_HERE,
-        base::Bind(&DownloadFileManager::UpdateDownload, file_manager_.get(),
-                   DownloadId(kValidIdDomain, id), download_buffer_));
-
-    message_loop_.RunAllPending();
-  }
-
   void OnDownloadInterrupted(int32 download_id, int64 size,
                              const std::string& hash_state,
                              content::DownloadInterruptReason reason) {
     download_manager_->OnDownloadInterrupted(download_id, size,
                                              hash_state, reason);
   }
 
   // Get the download item with ID |id|.
   DownloadItem* GetActiveDownloadItem(int32 id) {
     return download_manager_->GetActiveDownload(id);
   }
 
  protected:
   scoped_ptr<TestBrowserContext> browser_context;
   scoped_ptr<TestDownloadManagerDelegate> download_manager_delegate_;
   scoped_refptr<DownloadManagerImpl> download_manager_;
   scoped_refptr<DownloadFileManager> file_manager_;
   MessageLoopForUI message_loop_;
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread file_thread_;
-  scoped_refptr<content::DownloadBuffer> download_buffer_;
 
   DownloadFileManager* file_manager() {
     if (!file_manager_) {
       file_manager_ = new DownloadFileManager(new MockDownloadFileFactory);
       download_manager_->SetFileManagerForTesting(file_manager_);
     }
     return file_manager_;
   }
 
   DISALLOW_COPY_AND_ASSIGN(DownloadManagerTest);
@@ skipping 684 matching lines @@
   EXPECT_FALSE(observer->hit_state(DownloadItem::CANCELLED));
   EXPECT_FALSE(observer->hit_state(DownloadItem::REMOVING));
   EXPECT_TRUE(observer->was_updated());
   EXPECT_FALSE(observer->was_opened());
   EXPECT_FALSE(download->GetFileExternallyRemoved());
   EXPECT_EQ(DownloadItem::INTERRUPTED, download->GetState());
   EXPECT_EQ(download->GetReceivedBytes(), error_size);
   EXPECT_EQ(download->GetTotalBytes(), static_cast<int64>(kTestDataLen));
 }
 
+void WriteCopyToPipe(scoped_refptr<content::ByteStream> pipe,
+                     const char *source,
+                     size_t len) {
+  scoped_refptr<net::IOBuffer> copy(new net::IOBuffer(len));
+  memcpy(copy.get()->data(), source, len);
+  pipe->AddData(copy, len);
+}
+
 // Test the behavior of DownloadFileManager and DownloadManager in the event
 // of a file error while writing the download to disk.
 TEST_F(DownloadManagerTest, MAYBE_DownloadFileErrorTest) {
   // Create a temporary file and a mock stream.
   FilePath path;
   ASSERT_TRUE(file_util::CreateTemporaryFile(&path));
 
   // This file stream will be used, until the first rename occurs.
   net::FileStream* stream = new net::FileStream(NULL);
   ASSERT_EQ(0, stream->OpenSync(
       path,
       base::PLATFORM_FILE_OPEN_ALWAYS | base::PLATFORM_FILE_WRITE));
 
   // Normally, the download system takes ownership of info, and is
   // responsible for deleting it.  In these unit tests, however, we
   // don't call the function that deletes it, so we do so ourselves.
   scoped_ptr<DownloadCreateInfo> info(new DownloadCreateInfo);
   static const int32 local_id = 0;
   info->download_id = DownloadId(kValidIdDomain, local_id);
   info->prompt_user_for_save_location = false;
   info->url_chain.push_back(GURL());
   info->total_bytes = static_cast<int64>(kTestDataLen * 3);
   info->save_info.file_path = path;
   info->save_info.file_stream.reset(stream);
+  scoped_refptr<content::ByteStream> data_pipe(new content::ByteStream);
+  info->pipe = data_pipe;
 
   // Create a download file that we can insert errors into.
-  DownloadFileWithErrors* download_file(new DownloadFileWithErrors(
+  scoped_ptr<DownloadFileWithErrors> download_file(new DownloadFileWithErrors(
       info.get(), download_manager_, false));
   download_file->Initialize();
-  AddDownloadToFileManager(local_id, download_file);
 
-  // |download_file| is owned by DownloadFileManager.
   download_manager_->CreateDownloadItem(info.get(), DownloadRequestHandle());
 
   DownloadItem* download = GetActiveDownloadItem(0);
   ASSERT_TRUE(download != NULL);
 
   EXPECT_EQ(DownloadItem::IN_PROGRESS, download->GetState());
   scoped_ptr<ItemObserver> observer(new ItemObserver(download));
 
   // Add some data before finalizing the file name.
-  UpdateData(local_id, kTestData, kTestDataLen);
+  WriteCopyToPipe(data_pipe, kTestData, kTestDataLen);
 
   // Finalize the file name.
   ContinueDownloadWithPath(download, path);
   message_loop_.RunAllPending();
   EXPECT_TRUE(GetActiveDownloadItem(0) != NULL);
 
   // Add more data.
-  UpdateData(local_id, kTestData, kTestDataLen);
+  WriteCopyToPipe(data_pipe, kTestData, kTestDataLen);
 
   // Add more data, but an error occurs.
   download_file->set_forced_error(net::ERR_FAILED);
-  UpdateData(local_id, kTestData, kTestDataLen);
+  WriteCopyToPipe(data_pipe, kTestData, kTestDataLen);
 
   // Check the state.  The download should have been interrupted.
   EXPECT_TRUE(GetActiveDownloadItem(0) == NULL);
   EXPECT_TRUE(observer->hit_state(DownloadItem::IN_PROGRESS));
   EXPECT_TRUE(observer->hit_state(DownloadItem::INTERRUPTED));
   EXPECT_FALSE(observer->hit_state(DownloadItem::COMPLETE));
   EXPECT_FALSE(observer->hit_state(DownloadItem::CANCELLED));
   EXPECT_FALSE(observer->hit_state(DownloadItem::REMOVING));
   EXPECT_TRUE(observer->was_updated());
   EXPECT_FALSE(observer->was_opened());
@@ skipping 235 matching lines @@
   EXPECT_FALSE(observer->hit_state(DownloadItem::INTERRUPTED));
   EXPECT_TRUE(observer->hit_state(DownloadItem::COMPLETE));
   EXPECT_FALSE(observer->hit_state(DownloadItem::REMOVING));
   EXPECT_TRUE(observer->was_updated());
   EXPECT_FALSE(observer->was_opened());
   EXPECT_TRUE(download->GetFileExternallyRemoved());
   EXPECT_EQ(DownloadItem::COMPLETE, download->GetState());
 
   EXPECT_FALSE(file_util::PathExists(new_path));
 }