Downloads: replace BrowserThread::FILE with task scheduler.

content/browser/download/download_browsertest.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.
 
 // This file contains download browser tests that are known to be runnable
 // in a pure content context.  Over time tests should be migrated here.
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
@@ skipping 19 matching lines @@
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "content/browser/byte_stream.h"
 #include "content/browser/download/download_file_factory.h"
 #include "content/browser/download/download_file_impl.h"
 #include "content/browser/download/download_item_impl.h"
 #include "content/browser/download/download_manager_impl.h"
 #include "content/browser/download/download_resource_handler.h"
+#include "content/browser/download/download_task_runner.h"
 #include "content/browser/download/parallel_download_utils.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/download_danger_type.h"
 #include "content/public/browser/resource_dispatcher_host_delegate.h"
 #include "content/public/browser/resource_throttle.h"
 #include "content/public/common/content_features.h"
 #include "content/public/common/webplugininfo.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/content_browser_test.h"
@@ skipping 115 matching lines @@
                          const GURL& referrer_url,
                          const RenameCompletionCallback& callback) override;
 
  private:
   static void RenameCallbackWrapper(
       const base::WeakPtr<DownloadFileWithDelayFactory>& factory,
       const RenameCompletionCallback& original_callback,
       DownloadInterruptReason reason,
       const base::FilePath& path);
 
-  // This variable may only be read on the FILE thread, and may only be
+  // This variable may only be read on the download sequence, and may only be
   // indirected through (e.g. methods on DownloadFileWithDelayFactory called)
   // on the UI thread.  This is because after construction,
   // DownloadFileWithDelay lives on the file thread, but
   // DownloadFileWithDelayFactory is purely a UI thread object.
   base::WeakPtr<DownloadFileWithDelayFactory> owner_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadFileWithDelay);
 };
 
 // All routines on this class must be called on the UI thread.
@@ skipping 36 matching lines @@
                        std::move(stream),
                        net_log,
                        observer),
       owner_(owner) {}
 
 DownloadFileWithDelay::~DownloadFileWithDelay() {}
 
 void DownloadFileWithDelay::RenameAndUniquify(
     const base::FilePath& full_path,
     const RenameCompletionCallback& callback) {
-  DCHECK_CURRENTLY_ON(BrowserThread::FILE);
+  DCHECK(GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
   DownloadFileImpl::RenameAndUniquify(
       full_path, base::Bind(DownloadFileWithDelay::RenameCallbackWrapper,
                             owner_, callback));
 }
 
 void DownloadFileWithDelay::RenameAndAnnotate(
     const base::FilePath& full_path,
     const std::string& client_guid,
     const GURL& source_url,
     const GURL& referrer_url,
     const RenameCompletionCallback& callback) {
-  DCHECK_CURRENTLY_ON(BrowserThread::FILE);
+  DCHECK(GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
   DownloadFileImpl::RenameAndAnnotate(
       full_path,
       client_guid,
       source_url,
       referrer_url,
       base::Bind(
           DownloadFileWithDelay::RenameCallbackWrapper, owner_, callback));
 }
 
 // static
@@ skipping 59 matching lines @@
       std::unique_ptr<ByteStreamReader> stream,
       const net::NetLogWithSource& net_log,
       base::WeakPtr<DownloadDestinationObserver> observer)
       : DownloadFileImpl(std::move(save_info),
                          default_downloads_directory,
                          std::move(stream),
                          net_log,
                          observer) {}
 
   ~CountingDownloadFile() override {
-    DCHECK_CURRENTLY_ON(BrowserThread::FILE);
+    DCHECK(GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
     active_files_--;
   }
 
   void Initialize(
       const InitializeCallback& callback,
       const CancelRequestCallback& cancel_request_callback,
       const DownloadItem::ReceivedSlices& received_slices,
       bool is_parallelizable) override {
-    DCHECK_CURRENTLY_ON(BrowserThread::FILE);
+    DCHECK(GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
     active_files_++;
     DownloadFileImpl::Initialize(callback, cancel_request_callback,
                                  received_slices, is_parallelizable);
   }
 
   static void GetNumberActiveFiles(int* result) {
-    DCHECK_CURRENTLY_ON(BrowserThread::FILE);
+    DCHECK(GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
     *result = active_files_;
   }
 
   // Can be called on any thread, and will block (running message loop)
   // until data is returned.
   static int GetNumberActiveFilesFromFileThread() {
     int result = -1;
-    BrowserThread::PostTaskAndReply(
-        BrowserThread::FILE, FROM_HERE,
+    GetDownloadTaskRunner()->PostTaskAndReply(
+        FROM_HERE,
         base::Bind(&CountingDownloadFile::GetNumberActiveFiles, &result),
         base::MessageLoop::current()->QuitWhenIdleClosure());
     base::RunLoop().Run();
     DCHECK_NE(-1, result);
     return result;
   }
 
  private:
   static int active_files_;
 };
@@ skipping 539 matching lines @@
   // Wait until the second (final) rename callback is posted.
   file_factory->WaitForSomeCallback();
   file_factory->GetAllRenameCallbacks(&callbacks);
   ASSERT_EQ(1u, callbacks.size());
 
   // Cancel it.
   std::vector<DownloadItem*> items;
   download_manager->GetAllDownloads(&items);
   ASSERT_EQ(1u, items.size());
   items[0]->Cancel(true);
-  RunAllPendingInMessageLoop();
+  RunAllBlockingPoolTasksUntilIdle();
 
   // Check state.
   EXPECT_EQ(DownloadItem::CANCELLED, items[0]->GetState());
 
   // Run final rename callback.
   callbacks[0].Run();
   callbacks.clear();
 
   // Check state.
   EXPECT_EQ(DownloadItem::CANCELLED, items[0]->GetState());
@@ skipping 147 matching lines @@
 
   // Confirm download isn't complete yet.
   std::vector<DownloadItem*> items;
   DownloadManagerForShell(shell())->GetAllDownloads(&items);
   EXPECT_EQ(DownloadItem::IN_PROGRESS, items[0]->GetState());
 
   // Cancel the download; confirm cancel fails anyway.
   ASSERT_EQ(1u, items.size());
   items[0]->Cancel(true);
   EXPECT_EQ(DownloadItem::IN_PROGRESS, items[0]->GetState());
-  RunAllPendingInMessageLoop();
+  RunAllBlockingPoolTasksUntilIdle();
   EXPECT_EQ(DownloadItem::IN_PROGRESS, items[0]->GetState());
 
   MockDownloadItemObserver observer;
   items[0]->AddObserver(&observer);
   EXPECT_CALL(observer, OnDownloadDestroyed(items[0]));
 
   // Shutdown the download manager.  Mostly this is confirming a lack of
   // crashes.
   DownloadManagerForShell(shell())->Shutdown();
 }
@@ skipping 399 matching lines @@
   ASSERT_EQ(DownloadItem::INTERRUPTED, download->GetState());
   EXPECT_EQ(DOWNLOAD_INTERRUPT_REASON_FILE_NO_SPACE,
             download->GetLastReason());
   EXPECT_EQ(0, download->GetReceivedBytes());
   EXPECT_TRUE(download->GetFullPath().empty());
   EXPECT_FALSE(download->GetTargetFilePath().empty());
 
   // We need to make sure that any cross-thread downloads communication has
   // quiesced before clearing and injecting the new errors, as the
   // InjectErrors() routine alters the currently in use download file
-  // factory, which is a file thread object.
-  RunAllPendingInMessageLoop(BrowserThread::FILE);
-  RunAllPendingInMessageLoop();
+  // factory.
+  RunAllBlockingPoolTasksUntilIdle();
 
   // Clear the old errors list.
   injector->ClearError();
 
   // Resume and watch completion.
   download->Resume();
   WaitForCompletion(download);
   EXPECT_EQ(download->GetState(), DownloadItem::COMPLETE);
 }
 
@@ skipping 20 matching lines @@
             download->GetLastReason());
   EXPECT_TRUE(download->GetFullPath().empty());
   // Target path will have been set after file name determination. GetFullPath()
   // being empty is sufficient to signal that filename determination needs to be
   // redone.
   EXPECT_FALSE(download->GetTargetFilePath().empty());
 
   // We need to make sure that any cross-thread downloads communication has
   // quiesced before clearing and injecting the new errors, as the
   // InjectErrors() routine alters the currently in use download file
-  // factory, which is a file thread object.
-  RunAllPendingInMessageLoop(BrowserThread::FILE);
-  RunAllPendingInMessageLoop();
+  // factory.
+  RunAllBlockingPoolTasksUntilIdle();
 
   // Clear the old errors list.
   injector->ClearError();
 
   download->Resume();
   WaitForCompletion(download);
   EXPECT_EQ(download->GetState(), DownloadItem::COMPLETE);
 }
 
 IN_PROC_BROWSER_TEST_F(DownloadContentTest, RecoverFromFinalRenameError) {
@@ skipping 15 matching lines @@
   WaitForInterrupt(download);
   ASSERT_EQ(DownloadItem::INTERRUPTED, download->GetState());
   EXPECT_EQ(DOWNLOAD_INTERRUPT_REASON_FILE_FAILED, download->GetLastReason());
   EXPECT_TRUE(download->GetFullPath().empty());
   // Target path should still be intact.
   EXPECT_FALSE(download->GetTargetFilePath().empty());
 
   // We need to make sure that any cross-thread downloads communication has
   // quiesced before clearing and injecting the new errors, as the
   // InjectErrors() routine alters the currently in use download file
-  // factory, which is a file thread object.
-  RunAllPendingInMessageLoop(BrowserThread::FILE);
-  RunAllPendingInMessageLoop();
+  // factory, which is a download sequence object.
+  RunAllBlockingPoolTasksUntilIdle();
 
   // Clear the old errors list.
   injector->ClearError();
 
   download->Resume();
   WaitForCompletion(download);
   EXPECT_EQ(download->GetState(), DownloadItem::COMPLETE);
 }
 
 IN_PROC_BROWSER_TEST_F(DownloadContentTest, Resume_Hash) {
@@ skipping 57 matching lines @@
 
   DownloadItem* download =
       StartDownloadAndReturnItem(shell(), request_handler.url());
   WaitForInterrupt(download);
 
   base::FilePath intermediate_path = download->GetFullPath();
   ASSERT_FALSE(intermediate_path.empty());
   ASSERT_TRUE(PathExists(intermediate_path));
 
   download->Cancel(true /* user_cancel */);
-  RunAllPendingInMessageLoop(BrowserThread::FILE);
-  RunAllPendingInMessageLoop();
+  RunAllBlockingPoolTasksUntilIdle();
 
   // The intermediate file should now be gone.
   EXPECT_FALSE(PathExists(intermediate_path));
   EXPECT_TRUE(download->GetFullPath().empty());
 }
 
 IN_PROC_BROWSER_TEST_F(DownloadContentTest, RemoveInterruptedDownload) {
   TestDownloadRequestHandler request_handler;
   request_handler.StartServing(
       TestDownloadRequestHandler::Parameters::WithSingleInterruption());
 
   DownloadItem* download =
       StartDownloadAndReturnItem(shell(), request_handler.url());
   WaitForInterrupt(download);
 
   base::FilePath intermediate_path = download->GetFullPath();
   ASSERT_FALSE(intermediate_path.empty());
   ASSERT_TRUE(PathExists(intermediate_path));
 
   download->Remove();
-  RunAllPendingInMessageLoop(BrowserThread::FILE);
-  RunAllPendingInMessageLoop();
+  RunAllBlockingPoolTasksUntilIdle();
 
   // The intermediate file should now be gone.
   EXPECT_FALSE(PathExists(intermediate_path));
 }
 
 IN_PROC_BROWSER_TEST_F(DownloadContentTest, RemoveCompletedDownload) {
   // A completed download shouldn't delete the downloaded file when it is
   // removed.
   TestDownloadRequestHandler request_handler;
   request_handler.StartServing(TestDownloadRequestHandler::Parameters());
   std::unique_ptr<DownloadTestObserver> completion_observer(
       CreateWaiter(shell(), 1));
   DownloadItem* download(
       StartDownloadAndReturnItem(shell(), request_handler.url()));
   completion_observer->WaitForFinished();
 
   // The target path should exist.
   base::FilePath target_path(download->GetTargetFilePath());
   EXPECT_TRUE(PathExists(target_path));
   download->Remove();
-  RunAllPendingInMessageLoop(BrowserThread::FILE);
-  RunAllPendingInMessageLoop();
+  RunAllBlockingPoolTasksUntilIdle();
 
   // The file should still exist.
   EXPECT_TRUE(PathExists(target_path));
 }
 
 IN_PROC_BROWSER_TEST_F(DownloadContentTest, RemoveResumingDownload) {
   TestDownloadRequestHandler::Parameters parameters =
       TestDownloadRequestHandler::Parameters::WithSingleInterruption();
   TestDownloadRequestHandler request_handler;
   request_handler.StartServing(parameters);
@@ skipping 18 matching lines @@
   download->Resume();
   request_start_handler.WaitForCallback();
 
   // At this point, the download resumption request has been sent out, but the
   // reponse hasn't been received yet.
   download->Remove();
 
   request_start_handler.RespondWith(std::string(), net::OK);
 
   // The intermediate file should now be gone.
-  RunAllPendingInMessageLoop(BrowserThread::FILE);
-  RunAllPendingInMessageLoop();
+  RunAllBlockingPoolTasksUntilIdle();
   EXPECT_FALSE(PathExists(intermediate_path));
 
   parameters.ClearInjectedErrors();
   parameters.on_start_handler.Reset();
   request_handler.StartServing(parameters);
 
   // Start the second download and wait until it's done. This exercises the
   // entire downloads stack and effectively flushes all of our worker threads.
   // We are testing whether the URL request created in the previous
   // DownloadItem::Resume() call reulted in a new download or not.
@@ skipping 29 matching lines @@
   request_start_handler.WaitForCallback();
 
   // At this point, the download item has initiated a network request for the
   // resumption attempt, but hasn't received a response yet.
   download->Cancel(true /* user_cancel */);
 
   request_start_handler.RespondWith(std::string(), net::OK);
 
   // The intermediate file should now be gone.
   RunAllPendingInMessageLoop(BrowserThread::IO);
-  RunAllPendingInMessageLoop(BrowserThread::FILE);
-  RunAllPendingInMessageLoop();
+  RunAllBlockingPoolTasksUntilIdle();
   EXPECT_FALSE(PathExists(intermediate_path));
 
   parameters.ClearInjectedErrors();
   parameters.on_start_handler.Reset();
   request_handler.StartServing(parameters);
 
   // Start the second download and wait until it's done. This exercises the
   // entire downloads stack and effectively flushes all of our worker threads.
   // We are testing whether the URL request created in the previous
   // DownloadItem::Resume() call reulted in a new download or not.
@@ skipping 21 matching lines @@
   // Resume and remove download. We don't expect OnDownloadCreated() calls.
   MockDownloadManagerObserver dm_observer(DownloadManagerForShell(shell()));
   EXPECT_CALL(dm_observer, OnDownloadCreated(_, _)).Times(0);
 
   download->Resume();
   WaitForInProgress(download);
 
   download->Remove();
 
   // The intermediate file should now be gone.
-  RunAllPendingInMessageLoop(BrowserThread::FILE);
-  RunAllPendingInMessageLoop();
+  RunAllBlockingPoolTasksUntilIdle();
   EXPECT_FALSE(PathExists(intermediate_path));
   EXPECT_FALSE(PathExists(target_path));
   EXPECT_TRUE(EnsureNoPendingDownloads());
 }
 
 IN_PROC_BROWSER_TEST_F(DownloadContentTest, CancelResumedDownload) {
   TestDownloadRequestHandler::Parameters parameters =
       TestDownloadRequestHandler::Parameters::WithSingleInterruption();
   TestDownloadRequestHandler request_handler;
   request_handler.StartServing(parameters);
@@ skipping 11 matching lines @@
   // Resume and remove download. We don't expect OnDownloadCreated() calls.
   MockDownloadManagerObserver dm_observer(DownloadManagerForShell(shell()));
   EXPECT_CALL(dm_observer, OnDownloadCreated(_, _)).Times(0);
 
   download->Resume();
   WaitForInProgress(download);
 
   download->Cancel(true);
 
   // The intermediate file should now be gone.
-  RunAllPendingInMessageLoop(BrowserThread::FILE);
-  RunAllPendingInMessageLoop();
+  RunAllBlockingPoolTasksUntilIdle();
   EXPECT_FALSE(PathExists(intermediate_path));
   EXPECT_FALSE(PathExists(target_path));
   EXPECT_TRUE(EnsureNoPendingDownloads());
 }
 
 IN_PROC_BROWSER_TEST_F(DownloadContentTest, ResumeRestoredDownload_NoFile) {
   TestDownloadRequestHandler request_handler;
   TestDownloadRequestHandler::Parameters parameters;
   request_handler.StartServing(parameters);
 
@@ skipping 891 matching lines @@
 
   std::vector<DownloadItem*> downloads;
   DownloadManagerForShell(shell())->GetAllDownloads(&downloads);
   ASSERT_EQ(1u, downloads.size());
 
   EXPECT_EQ(FILE_PATH_LITERAL("foo"),
             downloads[0]->GetTargetFilePath().BaseName().value());
 }
 
 }  // namespace content