Implement a site engagement score based on time-on-site.

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"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "content/public/test/browser_test_utils.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/events/keycodes/keyboard_codes.h"
+
+class SiteEngagementServiceBrowserTest : public InProcessBrowserTest {
+ public:
+  // Create a SiteEngagementHelper. Called here as friend class methods cannot
+  // be called in tests.
+  scoped_ptr<SiteEngagementHelper> CreateHelper(
+      content::WebContents* web_contents) {
+    scoped_ptr<SiteEngagementHelper> helper(
+        new SiteEngagementHelper(web_contents));
+    DCHECK(helper.get());
+
+    return helper.Pass();
+  }
+
+  // Simulate a key press event and handle it.
+  void HandleKeyPress(SiteEngagementHelper* helper, ui::KeyboardCode key) {
+    content::NativeWebKeyboardEvent event;
+    event.windowsKeyCode = key;
+    event.type = blink::WebKeyboardEvent::RawKeyDown;
+    helper->input_tracker_.HandleKeyPressEvent(event);
+  }
+
+  // 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());
+  }
+
+  bool CallbacksAdded(SiteEngagementHelper* helper) {
+    return helper->input_tracker_.callbacks_added();
+  }
+};
+
+IN_PROC_BROWSER_TEST_F(SiteEngagementServiceBrowserTest,
+                       KeyPressEngagementAccumulation) {
+  GURL url1("https://www.google.com/");
+  GURL url2("http://www.google.com/");
+  content::WebContents* web_contents =
+    browser()->tab_strip_model()->GetActiveWebContents();
+
+  scoped_ptr<SiteEngagementHelper> helper(CreateHelper(web_contents));
+  SiteEngagementService* service =
+    SiteEngagementServiceFactory::GetForProfile(browser()->profile());
+  DCHECK(service);
+
+  // Check that navigation triggers engagement.
+  ui_test_utils::NavigateToURL(browser(), url1);
+  EXPECT_DOUBLE_EQ(0.5, service->GetScore(url1));
+  EXPECT_EQ(0, service->GetScore(url2));
+
+  // Simulate a key press trigger and ensure it is treated correctly.
+  HandleKeyPress(helper.get(), ui::VKEY_DOWN);
+
+  EXPECT_DOUBLE_EQ(0.55, service->GetScore(url1));
+  EXPECT_EQ(0, service->GetScore(url2));
+
+  // Simulate three key presses, and ensure they are treated correctly.
+  HandleKeyPress(helper.get(), ui::VKEY_UP);
+  HandleKeyPress(helper.get(), ui::VKEY_RETURN);
+  HandleKeyPress(helper.get(), ui::VKEY_J);
+
+  EXPECT_DOUBLE_EQ(0.7, service->GetScore(url1));
+  EXPECT_EQ(0, service->GetScore(url2));
+
+  // Simulate key presses for a different link.
+  ui_test_utils::NavigateToURL(browser(), url2);
+
+  EXPECT_DOUBLE_EQ(0.7, service->GetScore(url1));
+  EXPECT_DOUBLE_EQ(0.5, service->GetScore(url2));
+  EXPECT_DOUBLE_EQ(1.2, service->GetTotalEngagementPoints());
+
+  HandleKeyPress(helper.get(), ui::VKEY_K);
+  EXPECT_DOUBLE_EQ(0.7, service->GetScore(url1));
+  EXPECT_DOUBLE_EQ(0.55, service->GetScore(url2));
+  EXPECT_DOUBLE_EQ(1.25, service->GetTotalEngagementPoints());
+}
+
+IN_PROC_BROWSER_TEST_F(SiteEngagementServiceBrowserTest,
+                       MouseEventEngagementAccumulation) {
+  GURL url1("https://www.google.com/");
+  GURL url2("http://www.google.com/");
+  content::WebContents* web_contents =
+    browser()->tab_strip_model()->GetActiveWebContents();
+
+  scoped_ptr<SiteEngagementHelper> helper(CreateHelper(web_contents));
+  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));
+
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonLeft,
+                   blink::WebInputEvent::MouseDown);
+
+  EXPECT_DOUBLE_EQ(0.55, service->GetScore(url1));
+  EXPECT_EQ(0, service->GetScore(url2));
+
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonRight,
+                   blink::WebInputEvent::MouseWheel);
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonMiddle,
+                   blink::WebInputEvent::MouseDown);
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonLeft,
+                   blink::WebInputEvent::MouseDown);
+
+  EXPECT_DOUBLE_EQ(0.7, service->GetScore(url1));
+  EXPECT_EQ(0, service->GetScore(url2));
+
+  ui_test_utils::NavigateToURL(browser(), url2);
+
+  EXPECT_DOUBLE_EQ(0.7, service->GetScore(url1));
+  EXPECT_DOUBLE_EQ(0.5, service->GetScore(url2));
+  EXPECT_DOUBLE_EQ(1.2, service->GetTotalEngagementPoints());
+
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonLeft,
+                   blink::WebInputEvent::MouseDown);
+  EXPECT_DOUBLE_EQ(0.7, service->GetScore(url1));
+  EXPECT_DOUBLE_EQ(0.55, service->GetScore(url2));
+  EXPECT_DOUBLE_EQ(1.25, service->GetTotalEngagementPoints());
+}
+
+IN_PROC_BROWSER_TEST_F(SiteEngagementServiceBrowserTest,
+                       MixedInputEngagementAccumulation) {
+  GURL url1("https://www.google.com/");
+  GURL url2("http://www.google.com/");
+  content::WebContents* web_contents =
+    browser()->tab_strip_model()->GetActiveWebContents();
+
+  scoped_ptr<SiteEngagementHelper> helper(CreateHelper(web_contents));
+  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));
+
+  HandleKeyPress(helper.get(), ui::VKEY_UP);
+  HandleKeyPress(helper.get(), ui::VKEY_RETURN);
+  HandleKeyPress(helper.get(), ui::VKEY_J);
+
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonLeft,
+                   blink::WebInputEvent::MouseDown);
+
+  EXPECT_DOUBLE_EQ(0.7, service->GetScore(url1));
+  EXPECT_EQ(0, service->GetScore(url2));
+
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonRight,
+                   blink::WebInputEvent::MouseDown);
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonMiddle,
+                   blink::WebInputEvent::MouseDown);
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonNone,
+                   blink::WebInputEvent::MouseWheel);
+
+  EXPECT_DOUBLE_EQ(0.85, service->GetScore(url1));
+  EXPECT_EQ(0, service->GetScore(url2));
+
+  ui_test_utils::NavigateToURL(browser(), url2);
+
+  EXPECT_DOUBLE_EQ(0.85, service->GetScore(url1));
+  EXPECT_DOUBLE_EQ(0.5, service->GetScore(url2));
+  EXPECT_DOUBLE_EQ(1.35, service->GetTotalEngagementPoints());
+
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonNone,
+                   blink::WebInputEvent::MouseWheel);
+  HandleKeyPress(helper.get(), ui::VKEY_DOWN);
+
+  EXPECT_DOUBLE_EQ(0.85, service->GetScore(url1));
+  EXPECT_DOUBLE_EQ(0.6, service->GetScore(url2));
+  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();
+  scoped_ptr<SiteEngagementHelper> helper(CreateHelper(web_contents));
+  SetHelperTimer(helper.get(), mock_timer.Pass());
+
+  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());
+  EXPECT_TRUE(CallbacksAdded(helper.get()));
+  HandleKeyPress(helper.get(), ui::VKEY_RETURN);
+  EXPECT_TRUE(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());
+  EXPECT_TRUE(CallbacksAdded(helper.get()));
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonNone,
+                   blink::WebInputEvent::MouseWheel);
+  EXPECT_TRUE(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());
+  EXPECT_TRUE(CallbacksAdded(helper.get()));
+  ui_test_utils::NavigateToURL(browser(), url2);
+  EXPECT_FALSE(timer->IsRunning());
+  EXPECT_TRUE(CallbacksAdded(helper.get()));
+
+  EXPECT_DOUBLE_EQ(0.6, service->GetScore(url1));
+  EXPECT_DOUBLE_EQ(0.5, service->GetScore(url2));
+
+  HandleMouseEvent(helper.get(), blink::WebMouseEvent::ButtonRight,
+                   blink::WebInputEvent::MouseDown);
+  EXPECT_TRUE(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());
+}