Implementing recent pages snapshot capture.

chrome/browser/android/offline_pages/recent_tab_helper_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/recent_tab_helper.h"
 
+#include "base/run_loop.h"
+#include "base/test/test_mock_time_task_runner.h"
+#include "base/thread_task_runner_handle.h"
+#include "chrome/browser/android/offline_pages/offline_page_model_factory.h"
+#include "chrome/browser/android/offline_pages/test_offline_page_model_builder.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
+#include "components/offline_pages/offline_page_item.h"
+#include "components/offline_pages/offline_page_model.h"
+#include "components/offline_pages/offline_page_test_archiver.h"
+#include "content/public/browser/navigation_entry.h"
+#include "content/public/browser/navigation_handle.h"
+#include "content/public/browser/web_contents.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace offline_pages {
 
-class RecentTabHelperTest : public ChromeRenderViewHostTestHarness {
+class RecentTabHelperTest
+    : public ChromeRenderViewHostTestHarness,
+      public OfflinePageModel::Observer,
+      public OfflinePageTestArchiver::Observer {
  public:
-  RecentTabHelperTest() {}
+  RecentTabHelperTest();
   ~RecentTabHelperTest() override {}
 
   void SetUp() override;
+  void SetUpTestArchiver(const GURL& url);
+  void SetUpMockTaskRunner();
+  const std::vector<OfflinePageItem>& GetAllPages();
 
-  RecentTabHelper* recent_tab_helper() const {
-    return recent_tab_helper_;
+  // Runs default thread.
+  void RunUntilIdle();
+  // Moves forward the snapshot controller's task runner.
+  void FastForwardSnapshotController();
+
+  RecentTabHelper* recent_tab_helper() const { return recent_tab_helper_; }
+  OfflinePageModel* model() const { return model_; }
+  const std::vector<OfflinePageItem>& all_pages() { return all_pages_; }
+  size_t model_changed_count() { return model_changed_count_; }
+  size_t model_removed_count() { return model_removed_count_; }
+
+  // OfflinePageModel::Observer
+  void OfflinePageModelLoaded(OfflinePageModel* model) override { }
+  void OfflinePageModelChanged(OfflinePageModel* model) override {
+    model_changed_count_++;
+  }
+  void OfflinePageDeleted(int64_t, const offline_pages::ClientId&) {
+    model_removed_count_++;
   }
 
+  // OfflinePageTestArchiver::Observer
+  void SetLastPathCreatedByArchiver(const base::FilePath& file_path) override {}
+
  private:
+  void OnGetAllPagesDone(const std::vector<OfflinePageItem>& result);
+
   RecentTabHelper* recent_tab_helper_;  // Owned by WebContents.
+  OfflinePageModel* model_;  // Keyed service
+  size_t model_changed_count_;
+  size_t model_removed_count_;
+  std::vector<OfflinePageItem> all_pages_;
+  scoped_refptr<base::TestMockTimeTaskRunner> task_runner_;
+
+  base::WeakPtrFactory<RecentTabHelperTest> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RecentTabHelperTest);
 };
 
+RecentTabHelperTest::RecentTabHelperTest()
+    : recent_tab_helper_(nullptr),
+      model_(nullptr),
+      model_changed_count_(0),
+      model_removed_count_(0),
+      task_runner_(new base::TestMockTimeTaskRunner),
+      weak_ptr_factory_(this) {
+}
+
 void RecentTabHelperTest::SetUp() {
   content::RenderViewHostTestHarness::SetUp();
+  LOG(INFO) << "Setting up the test";
   RecentTabHelper::CreateForWebContents(web_contents());
   recent_tab_helper_ =
       RecentTabHelper::FromWebContents(web_contents());
+  recent_tab_helper_->SetTaskRunnerForTest(task_runner_);
+
+  // Sets up the factory for testing.
+  OfflinePageModelFactory::GetInstance()->SetTestingFactoryAndUse(
+      browser_context(), BuildTestOfflinePageModel);
+  RunUntilIdle();
+
+  model_ = OfflinePageModelFactory::GetForBrowserContext(browser_context());
+  model_->AddObserver(this);
+}
+
+void RecentTabHelperTest::SetUpTestArchiver(const GURL& url) {
+  const size_t kArchiveSizeToReport = 1234;
+  std::unique_ptr<OfflinePageTestArchiver> archiver;
+  archiver.reset(new OfflinePageTestArchiver(
+    this, url, OfflinePageArchiver::ArchiverResult::SUCCESSFULLY_CREATED,
+    kArchiveSizeToReport, base::ThreadTaskRunnerHandle::Get()));
+  recent_tab_helper_->SetArchiverForTest(std::move(archiver));
+}
+
+const std::vector<OfflinePageItem>& RecentTabHelperTest::GetAllPages() {
+  model()->GetAllPages(
+      base::Bind(&RecentTabHelperTest::OnGetAllPagesDone,
+                 weak_ptr_factory_.GetWeakPtr()));
+  RunUntilIdle();
+  return all_pages_;
+}
+
+void RecentTabHelperTest::OnGetAllPagesDone(
+    const std::vector<OfflinePageItem>& result) {
+  all_pages_ = result;
+}
+
+void RecentTabHelperTest::RunUntilIdle() {
+  base::RunLoop().RunUntilIdle();
+}
+
+void RecentTabHelperTest::FastForwardSnapshotController() {
+  const size_t kLongDelayMs = 100*1000;
+  task_runner_->FastForwardBy(base::TimeDelta::FromMilliseconds(kLongDelayMs));
 }
 
 TEST_F(RecentTabHelperTest, Basic) {
   EXPECT_NE(nullptr, recent_tab_helper());
 }
 
+TEST_F(RecentTabHelperTest, SimpleCapture) {
+  const GURL url("http://mystery.site/foo.html");
+  SetUpTestArchiver(url);
+  NavigateAndCommit(url);
+  recent_tab_helper()->DocumentOnLoadCompletedInMainFrame();
+  RunUntilIdle();
+  EXPECT_TRUE(model()->is_loaded());
+  GetAllPages();
+  EXPECT_EQ(1, all_pages().size());
+  EXPECT_EQ(url, all_pages()[0].url);
+}
+
+TEST_F(RecentTabHelperTest, TwoCaptures) {
+  const GURL url("http://mystery.site/foo.html");
+  SetUpTestArchiver(url);
+  NavigateAndCommit(url);
+  // Triggers snapshot after a time delay.
+  recent_tab_helper()->DocumentAvailableInMainFrame();
+  RunUntilIdle();
+  EXPECT_TRUE(model()->is_loaded());
+  EXPECT_EQ(0, model_changed_count());
+  // Move the snapshot controller's time forward so it gets past timeouts.
+  FastForwardSnapshotController();
+  RunUntilIdle();
+  EXPECT_EQ(1, model_changed_count());
+  EXPECT_EQ(0, model_removed_count());
+  GetAllPages();
+  EXPECT_EQ(1, all_pages().size());
+  EXPECT_EQ(url, all_pages()[0].url);
+
+  SetUpTestArchiver(url);
+  // Triggers snapshot immediately;
+  recent_tab_helper()->DocumentOnLoadCompletedInMainFrame();
+  RunUntilIdle();
+  EXPECT_EQ(2, model_changed_count());
+  EXPECT_EQ(1, model_removed_count());
+  // the same page should be simply overridden.
+  GetAllPages();
+  EXPECT_EQ(1, all_pages().size());
+  EXPECT_EQ(url, all_pages()[0].url);
+}
+
 }  // namespace offline_pages