chrome/browser/chromeos/file_manager/mount_test_util.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chromeos/file_manager/mount_test_util.h"
   6
   7 #include "base/run_loop.h"
   8 #include "chrome/browser/chromeos/drive/drive_integration_service.h"
   9
  10 namespace file_manager {
  11 namespace test_util {
  12
  13 namespace {
  14
  15 // Helper class used to wait for |OnFileSystemMounted| event from a drive file
  16 // system.
  17 class DriveMountPointWaiter : public drive::DriveIntegrationServiceObserver {
  18  public:
  19   explicit DriveMountPointWaiter(
  20       drive::DriveIntegrationService* integration_service)
  21       : integration_service_(integration_service) {
  22     integration_service_->AddObserver(this);
  23   }
  24
  25   ~DriveMountPointWaiter() override {
  26     integration_service_->RemoveObserver(this);
  27   }
  28
  29   // DriveIntegrationServiceObserver override.
  30   void OnFileSystemMounted() override {
  31     // Note that it is OK for |run_loop_.Quit| to be called before
  32     // |run_loop_.Run|. In this case |Run| will return immediately.
  33     run_loop_.Quit();
  34   }
  35
  36   // Runs loop until the file system is mounted.
  37   void Wait() {
  38     run_loop_.Run();
  39   }
  40
  41  private:
  42   drive::DriveIntegrationService* integration_service_;
  43   base::RunLoop run_loop_;
  44 };
  45
  46 }  // namespace
  47
  48 void WaitUntilDriveMountPointIsAdded(Profile* profile) {
  49   DCHECK(profile);
  50
  51   // Drive mount point is added by the browser when the drive system service
  52   // is first initialized. It is done asynchronously after some other parts of
  53   // the service are initialized (e.g. resource metadata and cache), thus racy
  54   // with the test start. To handle this raciness, the test verifies that
  55   // drive mount point is added before continuing. If this is not the case,
  56   // drive file system is observed for FileSystemMounted event (by
  57   // |mount_point_waiter|) and test continues once the event is encountered.
  58   drive::DriveIntegrationService* integration_service =
  59       drive::DriveIntegrationServiceFactory::FindForProfile(profile);
  60   DCHECK(integration_service);
  61   DCHECK(integration_service->is_enabled());
  62
  63   if (integration_service->IsMounted())
  64     return;
  65
  66   DriveMountPointWaiter mount_point_waiter(integration_service);
  67   VLOG(1) << "Waiting for drive mount point to get mounted.";
  68   mount_point_waiter.Wait();
  69   VLOG(1) << "Drive mount point found.";
  70 }
  71
  72 }  // namespace test_util
  73 }  // namespace file_manager