Add a delay to Site Engagement tracking after navigation.

chrome/browser/engagement/site_engagement_service_browsertest.cc

 // Copyright 2015 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 "base/command_line.h"
 #include "base/timer/mock_timer.h"
 #include "base/values.h"
 #include "chrome/browser/engagement/site_engagement_helper.h"
 #include "chrome/browser/engagement/site_engagement_service.h"
 #include "chrome/browser/engagement/site_engagement_service_factory.h"
@@ skipping 30 matching lines @@
   // Simulate a mouse event and handle it.
   void HandleMouseEvent(SiteEngagementHelper* helper,
                         blink::WebMouseEvent::Button button,
                         blink::WebInputEvent::Type type) {
     blink::WebMouseEvent event;
     event.button = button;
     event.type = type;
     helper->input_tracker_.HandleMouseEvent(event);
   }
 
-  // Set a timer object for test purposes.
-  void SetHelperTimer(SiteEngagementHelper* helper,
-                      scoped_ptr<base::Timer> timer) {
-    helper->input_tracker_.SetTimerForTesting(timer.Pass());
+  // Set a pause timer on the input tracker for test purposes.
+  void SetInputTrackerPauseTimer(SiteEngagementHelper* helper,
+                                 scoped_ptr<base::Timer> timer) {
+    helper->input_tracker_.SetPauseTimerForTesting(timer.Pass());
   }
 
   bool CallbacksAdded(SiteEngagementHelper* helper) {
     return helper->input_tracker_.callbacks_added();
   }
 };
 
 IN_PROC_BROWSER_TEST_F(SiteEngagementServiceBrowserTest,
                        KeyPressEngagementAccumulation) {
   GURL url1("https://www.google.com/");
@@ skipping 134 matching lines @@
   EXPECT_DOUBLE_EQ(1.45, service->GetTotalEngagementPoints());
 }
 
 IN_PROC_BROWSER_TEST_F(SiteEngagementServiceBrowserTest,
                        CheckTimerAndCallbacks) {
   GURL url1("https://www.google.com/");
   GURL url2("http://www.google.com/");
   content::WebContents* web_contents =
     browser()->tab_strip_model()->GetActiveWebContents();
 
-  scoped_ptr<base::MockTimer> mock_timer(new base::MockTimer(true, false));
-  base::MockTimer* timer = mock_timer.get();
+  base::MockTimer* input_tracker_timer = new base::MockTimer(true, false);
   scoped_ptr<SiteEngagementHelper> helper(CreateHelper(web_contents));
-  SetHelperTimer(helper.get(), mock_timer.Pass());
+  SetInputTrackerPauseTimer(helper.get(), make_scoped_ptr(input_tracker_timer));
 
   SiteEngagementService* service =
     SiteEngagementServiceFactory::GetForProfile(browser()->profile());
   DCHECK(service);
 
   ui_test_utils::NavigateToURL(browser(), url1);
   EXPECT_DOUBLE_EQ(0.5, service->GetScore(url1));
   EXPECT_EQ(0, service->GetScore(url2));
 
-  // Timer should not be running after navigation. It should start after input.
-  EXPECT_FALSE(timer->IsRunning());
+  // Timer should be running for navigation delay.
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
+  EXPECT_FALSE(CallbacksAdded(helper.get()));
+  input_tracker_timer->Fire();
+
+  // Timer should start running again after input.
+  EXPECT_FALSE(input_tracker_timer->IsRunning());
   EXPECT_TRUE(CallbacksAdded(helper.get()));
   HandleKeyPress(helper.get(), ui::VKEY_RETURN);
-  EXPECT_TRUE(timer->IsRunning());
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
   EXPECT_FALSE(CallbacksAdded(helper.get()));
 
   EXPECT_DOUBLE_EQ(0.55, service->GetScore(url1));
   EXPECT_EQ(0, service->GetScore(url2));
-  timer->Fire();
 
-  EXPECT_FALSE(timer->IsRunning());
+  input_tracker_timer->Fire();
+  EXPECT_FALSE(input_tracker_timer->IsRunning());
   EXPECT_TRUE(CallbacksAdded(helper.get()));
+
+  // Timer should start running again after input.
   HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonNone,
                    blink::WebInputEvent::MouseWheel);
-  EXPECT_TRUE(timer->IsRunning());
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
   EXPECT_FALSE(CallbacksAdded(helper.get()));
 
   EXPECT_DOUBLE_EQ(0.6, service->GetScore(url1));
   EXPECT_EQ(0, service->GetScore(url2));
-  timer->Fire();
 
-  EXPECT_FALSE(timer->IsRunning());
+  input_tracker_timer->Fire();
+  EXPECT_FALSE(input_tracker_timer->IsRunning());
   EXPECT_TRUE(CallbacksAdded(helper.get()));
+
+  // Timer should be running for navigation delay.
   ui_test_utils::NavigateToURL(browser(), url2);
-  EXPECT_FALSE(timer->IsRunning());
-  EXPECT_TRUE(CallbacksAdded(helper.get()));
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
+  EXPECT_FALSE(CallbacksAdded(helper.get()));
 
   EXPECT_DOUBLE_EQ(0.6, service->GetScore(url1));
   EXPECT_DOUBLE_EQ(0.5, service->GetScore(url2));
 
+  input_tracker_timer->Fire();
+  EXPECT_FALSE(input_tracker_timer->IsRunning());
+  EXPECT_TRUE(CallbacksAdded(helper.get()));
+
   HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonRight,
                    blink::WebInputEvent::MouseDown);
-  EXPECT_TRUE(timer->IsRunning());
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
   EXPECT_FALSE(CallbacksAdded(helper.get()));
 
   EXPECT_DOUBLE_EQ(0.6, service->GetScore(url1));
   EXPECT_DOUBLE_EQ(0.55, service->GetScore(url2));
   EXPECT_DOUBLE_EQ(1.15, service->GetTotalEngagementPoints());
 }
+
+// Ensure that navigation does not trigger input tracking until after a delay.
+IN_PROC_BROWSER_TEST_F(SiteEngagementServiceBrowserTest, ShowAndHide) {
+  GURL url1("https://www.google.com/");
+  GURL url2("http://www.google.com/");
+  content::WebContents* web_contents =
+      browser()->tab_strip_model()->GetActiveWebContents();
+
+  base::MockTimer* input_tracker_timer = new base::MockTimer(true, false);
+  scoped_ptr<SiteEngagementHelper> helper(CreateHelper(web_contents));
+  SetInputTrackerPauseTimer(helper.get(), make_scoped_ptr(input_tracker_timer));
+
+  ui_test_utils::NavigateToURL(browser(), url1);
+  input_tracker_timer->Fire();
+
+  EXPECT_FALSE(input_tracker_timer->IsRunning());
+  EXPECT_TRUE(CallbacksAdded(helper.get()));
+
+  // Hiding the tab should stop input tracking.
+  ui_test_utils::NavigateToURLWithDisposition(
+      browser(), url2, NEW_FOREGROUND_TAB,
+      ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
+
+  EXPECT_FALSE(CallbacksAdded(helper.get()));
+
+  // Showing the tab should start tracking again after another delay.
+  browser()->tab_strip_model()->ActivateTabAt(0, true);
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
+  EXPECT_FALSE(CallbacksAdded(helper.get()));
+
+  input_tracker_timer->Fire();
+  EXPECT_FALSE(input_tracker_timer->IsRunning());
+  EXPECT_TRUE(CallbacksAdded(helper.get()));
+
+  // New background tabs should not affect the current tab's input tracking.
+  ui_test_utils::NavigateToURLWithDisposition(
+      browser(), url2, NEW_BACKGROUND_TAB,
+      ui_test_utils::BROWSER_TEST_WAIT_FOR_TAB);
+  EXPECT_FALSE(input_tracker_timer->IsRunning());
+  EXPECT_TRUE(CallbacksAdded(helper.get()));
+
+  // Ensure behavior holds when tab is hidden before the initial delay timer
+  // fires.
+  ui_test_utils::NavigateToURL(browser(), url2);
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
+  EXPECT_FALSE(CallbacksAdded(helper.get()));
+
+  ui_test_utils::NavigateToURLWithDisposition(
+      browser(), url2, NEW_FOREGROUND_TAB,
+      ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
+  EXPECT_FALSE(input_tracker_timer->IsRunning());
+  EXPECT_FALSE(CallbacksAdded(helper.get()));
+
+  // Showing the tab should start tracking again after another delay.
+  browser()->tab_strip_model()->ActivateTabAt(0, true);
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
+  EXPECT_FALSE(CallbacksAdded(helper.get()));
+
+  input_tracker_timer->Fire();
+  EXPECT_TRUE(CallbacksAdded(helper.get()));
+}
+
+// Ensure tracking behavior is correct for multiple navigations in a single tab.
+IN_PROC_BROWSER_TEST_F(SiteEngagementServiceBrowserTest, SingleTabNavigation) {
+  GURL url1("https://www.google.com/");
+  GURL url2("https://www.example.com/");
+  content::WebContents* web_contents =
+      browser()->tab_strip_model()->GetActiveWebContents();
+
+  base::MockTimer* input_tracker_timer = new base::MockTimer(true, false);
+  scoped_ptr<SiteEngagementHelper> helper(CreateHelper(web_contents));
+  SetInputTrackerPauseTimer(helper.get(), make_scoped_ptr(input_tracker_timer));
+
+  // Navigation should start the initial delay timer.
+  ui_test_utils::NavigateToURL(browser(), url1);
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
+  EXPECT_FALSE(CallbacksAdded(helper.get()));
+
+  // Navigating before the timer fires should simply reset the timer.
+  ui_test_utils::NavigateToURL(browser(), url2);
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
+  EXPECT_FALSE(CallbacksAdded(helper.get()));
+
+  // When the timer fires, callbacks are added.
+  input_tracker_timer->Fire();
+  EXPECT_FALSE(input_tracker_timer->IsRunning());
+  EXPECT_TRUE(CallbacksAdded(helper.get()));
+
+  // Navigation should start the initial delay timer again.
+  ui_test_utils::NavigateToURL(browser(), url1);
+  EXPECT_TRUE(input_tracker_timer->IsRunning());
+  EXPECT_FALSE(CallbacksAdded(helper.get()));
+}