[Offline Pages] Snapshotting on timeout of last retry.

chrome/browser/android/offline_pages/prerendering_offliner_unittest.cc

 // Copyright 2016 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 "chrome/browser/android/offline_pages/prerendering_offliner.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/run_loop.h"
 #include "base/sys_info.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/android/offline_pages/prerendering_loader.h"
 #include "chrome/browser/net/prediction_options.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/content_settings/core/common/pref_names.h"
 #include "components/offline_pages/core/background/offliner.h"
+#include "components/offline_pages/core/background/offliner_policy.h"
 #include "components/offline_pages/core/background/save_page_request.h"
 #include "components/offline_pages/core/stub_offline_page_model.h"
 #include "components/prefs/pref_service.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "content/public/test/web_contents_tester.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace offline_pages {
 
 namespace {
 const int64_t kRequestId = 7;
 const GURL kHttpUrl("http://tunafish.com");
 const GURL kFileUrl("file://sailfish.png");
 const ClientId kClientId("AsyncLoading", "88");
 const bool kUserRequested = true;
 
 // Mock Loader for testing the Offliner calls.
 class MockPrerenderingLoader : public PrerenderingLoader {
  public:
   explicit MockPrerenderingLoader(content::BrowserContext* browser_context)
       : PrerenderingLoader(browser_context),
         can_prerender_(true),
         mock_loading_(false),
-        mock_loaded_(false) {}
+        mock_loaded_(false),
+        mock_is_lowbar_met_(false),
+        start_snapshot_called_(false) {}
   ~MockPrerenderingLoader() override {}
 
   bool LoadPage(const GURL& url, const LoadPageCallback& callback) override {
     mock_loading_ = can_prerender_;
     load_page_callback_ = callback;
     return mock_loading_;
   }
 
   void StopLoading() override {
     mock_loading_ = false;
     mock_loaded_ = false;
   }
 
   bool IsIdle() override { return !mock_loading_ && !mock_loaded_; }
   bool IsLoaded() override { return mock_loaded_; }
+  bool IsLowbarMet() override { return mock_is_lowbar_met_; }
+
+  void StartSnapshot() override { start_snapshot_called_ = true; }
 
   void CompleteLoadingAsFailed() {
     DCHECK(mock_loading_);
     mock_loading_ = false;
     mock_loaded_ = false;
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(load_page_callback_, Offliner::RequestStatus::LOADING_FAILED,
                    nullptr /* web_contents */));
   }
@@ skipping 14 matching lines @@
     mock_loading_ = false;
     mock_loaded_ = false;
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(load_page_callback_,
                               Offliner::RequestStatus::LOADING_CANCELED,
                               nullptr /* web_contents */));
   }
 
   void DisablePrerendering() { can_prerender_ = false; }
   const LoadPageCallback& load_page_callback() { return load_page_callback_; }
+  void set_is_lowbar_met(bool is_lowbar_met) {
+    mock_is_lowbar_met_ = is_lowbar_met;
+  }
+  bool start_snapshot_called() { return start_snapshot_called_; }
 
  private:
   bool can_prerender_;
   bool mock_loading_;
   bool mock_loaded_;
+  bool mock_is_lowbar_met_;
+  bool start_snapshot_called_;
   LoadPageCallback load_page_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(MockPrerenderingLoader);
 };
 
 // Mock OfflinePageModel for testing the SavePage calls.
 class MockOfflinePageModel : public StubOfflinePageModel {
  public:
   MockOfflinePageModel() : mock_saving_(false) {}
   ~MockOfflinePageModel() override {}
@@ skipping 48 matching lines @@
   Offliner::CompletionCallback const callback() {
     return base::Bind(&PrerenderingOfflinerTest::OnCompletion,
                       base::Unretained(this));
   }
 
   bool SaveInProgress() const { return model_->mock_saving(); }
   MockPrerenderingLoader* loader() { return loader_; }
   MockOfflinePageModel* model() { return model_; }
   bool completion_callback_called() { return completion_callback_called_; }
   Offliner::RequestStatus request_status() { return request_status_; }
+  OfflinerPolicy* policy() { return policy_; }
 
  private:
   void OnCompletion(const SavePageRequest& request,
                     Offliner::RequestStatus status);
 
   content::TestBrowserThreadBundle thread_bundle_;
   TestingProfile profile_;
   std::unique_ptr<PrerenderingOffliner> offliner_;
   // Not owned.
   MockPrerenderingLoader* loader_;
   MockOfflinePageModel* model_;
   bool completion_callback_called_;
   Offliner::RequestStatus request_status_;
+  OfflinerPolicy* policy_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderingOfflinerTest);
 };
 
 PrerenderingOfflinerTest::PrerenderingOfflinerTest()
     : thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP),
       completion_callback_called_(false),
       request_status_(Offliner::RequestStatus::UNKNOWN) {}
 
 PrerenderingOfflinerTest::~PrerenderingOfflinerTest() {}
 
 void PrerenderingOfflinerTest::SetUp() {
   model_ = new MockOfflinePageModel();
-  offliner_.reset(new PrerenderingOffliner(profile(), nullptr, model_));
+  policy_ = new OfflinerPolicy();
+  offliner_.reset(new PrerenderingOffliner(profile(), policy_, model_));
   std::unique_ptr<MockPrerenderingLoader> mock_loader(
       new MockPrerenderingLoader(nullptr));
   loader_ = mock_loader.get();
   offliner_->SetLoaderForTesting(std::move(mock_loader));
 }
 
 void PrerenderingOfflinerTest::OnCompletion(const SavePageRequest& request,
                                             Offliner::RequestStatus status) {
   DCHECK(!completion_callback_called_);  // Expect single callback per request.
   completion_callback_called_ = true;
@@ skipping 190 matching lines @@
   EXPECT_TRUE(offliner()->LoadAndSave(request, callback()));
   EXPECT_FALSE(loader()->IsIdle());
 
   offliner()->SetApplicationStateForTesting(
       base::android::APPLICATION_STATE_HAS_RUNNING_ACTIVITIES);
 
   // Loader still loading since not low-end device.
   EXPECT_FALSE(loader()->IsIdle());
 }
 
+TEST_F(PrerenderingOfflinerTest, HandleTimeoutWithLowbarAndCompletedTriesMet) {
+  offliner()->SetLowEndDeviceForTesting(false);
+
+  base::Time creation_time = base::Time::Now();
+  SavePageRequest request(kRequestId, kHttpUrl, kClientId, creation_time,
+                          kUserRequested);
+  request.set_completed_attempt_count(policy()->GetMaxCompletedTries() - 1);
+  EXPECT_TRUE(offliner()->LoadAndSave(request, callback()));
+  loader()->set_is_lowbar_met(true);
+  EXPECT_TRUE(offliner()->HandleTimeout(request));
+  EXPECT_TRUE(loader()->start_snapshot_called());
+}
+
+TEST_F(PrerenderingOfflinerTest,
+       HandleTimeoutWithLowbarAndCompletedTriesMetLowEndDevice) {
+  offliner()->SetLowEndDeviceForTesting(true);
+
+  base::Time creation_time = base::Time::Now();
+  SavePageRequest request(kRequestId, kHttpUrl, kClientId, creation_time,
+                          kUserRequested);
+  request.set_completed_attempt_count(policy()->GetMaxCompletedTries() - 1);
+  EXPECT_TRUE(offliner()->LoadAndSave(request, callback()));
+  loader()->set_is_lowbar_met(true);
+  EXPECT_TRUE(offliner()->HandleTimeout(request));
+  EXPECT_TRUE(loader()->start_snapshot_called());
+}
+
+TEST_F(PrerenderingOfflinerTest,
+       HandleTimeoutCompletedTriesMetWithoutLowbarMet) {
+  offliner()->SetLowEndDeviceForTesting(false);
+
+  base::Time creation_time = base::Time::Now();
+  SavePageRequest request(kRequestId, kHttpUrl, kClientId, creation_time,
+                          kUserRequested);
+  request.set_completed_attempt_count(policy()->GetMaxCompletedTries() - 1);
+  EXPECT_TRUE(offliner()->LoadAndSave(request, callback()));
+  loader()->set_is_lowbar_met(false);
+  EXPECT_FALSE(offliner()->HandleTimeout(request));
+  EXPECT_FALSE(loader()->start_snapshot_called());
+}
+
+TEST_F(PrerenderingOfflinerTest, HandleTimeoutWithLowbarAndStartedTriesMet) {
+  offliner()->SetLowEndDeviceForTesting(false);
+
+  base::Time creation_time = base::Time::Now();
+  SavePageRequest request(kRequestId, kHttpUrl, kClientId, creation_time,
+                          kUserRequested);
+  request.set_started_attempt_count(policy()->GetMaxStartedTries() - 1);
+  EXPECT_TRUE(offliner()->LoadAndSave(request, callback()));
+  loader()->set_is_lowbar_met(true);
+  EXPECT_TRUE(offliner()->HandleTimeout(request));
+  EXPECT_TRUE(loader()->start_snapshot_called());
+}
+
+TEST_F(PrerenderingOfflinerTest, HandleTimeoutWithOnlyLowbarMet) {
+  offliner()->SetLowEndDeviceForTesting(false);
+
+  base::Time creation_time = base::Time::Now();
+  SavePageRequest request(kRequestId, kHttpUrl, kClientId, creation_time,
+                          kUserRequested);
+  EXPECT_TRUE(offliner()->LoadAndSave(request, callback()));
+  loader()->set_is_lowbar_met(true);
+  EXPECT_FALSE(offliner()->HandleTimeout(request));
+  EXPECT_FALSE(loader()->start_snapshot_called());
+}
+
 }  // namespace offline_pages