Adds enableVirtualTime and setVirtualTimePolicy To Emulation domain.

components/scheduler/renderer/web_view_scheduler_impl_unittest.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 "components/scheduler/renderer/web_view_scheduler_impl.h"
 
 #include <memory>
 
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "cc/test/ordered_simple_task_runner.h"
 #include "components/scheduler/base/test_time_source.h"
 #include "components/scheduler/child/scheduler_tqm_delegate_for_test.h"
 #include "components/scheduler/renderer/renderer_scheduler_impl.h"
 #include "components/scheduler/renderer/web_frame_scheduler_impl.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebTaskRunner.h"
 #include "third_party/WebKit/public/platform/WebTraceLocation.h"
 
 using testing::ElementsAre;
+using VirtualTimePolicy = blink::WebViewScheduler::VirtualTimePolicy;
 
 namespace scheduler {
 
 class WebViewSchedulerImplTest : public testing::Test {
  public:
   WebViewSchedulerImplTest() {}
   ~WebViewSchedulerImplTest() override {}
 
   void SetUp() override {
     clock_.reset(new base::SimpleTestTickClock());
@@ skipping 295 matching lines @@
  private:
   int index_;
   blink::WebTaskRunner* task_runner_;  // NOT OWNED
   std::vector<int>* out_run_order_;    // NOT OWNED
 };
 }
 
 TEST_F(WebViewSchedulerImplTest, VirtualTime_NotAllowedToAdvance) {
   std::vector<int> run_order;
 
-  web_view_scheduler_->setAllowVirtualTimeToAdvance(false);
+  web_view_scheduler_->setVirtualTimePolicy(
+      blink::WebViewScheduler::VirtualTimePolicy::PAUSE);

[Sami, 2016/07/05 10:26:55]

nit: no need for the namespace prefix with the 'using' (below too).

[alex clarke (OOO till 29th), 2016/07/05 13:08:13]

Done.

   web_view_scheduler_->enableVirtualTime();
 
   web_frame_scheduler_->timerTaskRunner()->postTask(
       BLINK_FROM_HERE, new RunOrderTask(0, &run_order));
 
   web_frame_scheduler_->timerTaskRunner()->postDelayedTask(
       BLINK_FROM_HERE,
       new DelayedRunOrderTask(1, web_frame_scheduler_->timerTaskRunner(),
                               &run_order),
       2.0);
 
   web_frame_scheduler_->timerTaskRunner()->postDelayedTask(
       BLINK_FROM_HERE,
       new DelayedRunOrderTask(3, web_frame_scheduler_->timerTaskRunner(),
                               &run_order),
       4.0);
 
   mock_task_runner_->RunUntilIdle();
 
   // Immediate tasks are allowed to run even if delayed tasks are not.
   EXPECT_THAT(run_order, ElementsAre(0));
 }
 
 TEST_F(WebViewSchedulerImplTest, VirtualTime_AllowedToAdvance) {
   std::vector<int> run_order;
 
-  web_view_scheduler_->setAllowVirtualTimeToAdvance(true);
+  web_view_scheduler_->setVirtualTimePolicy(
+      blink::WebViewScheduler::VirtualTimePolicy::ADVANCE);
   web_view_scheduler_->enableVirtualTime();
 
   web_frame_scheduler_->timerTaskRunner()->postTask(
       BLINK_FROM_HERE, new RunOrderTask(0, &run_order));
 
   web_frame_scheduler_->timerTaskRunner()->postDelayedTask(
       BLINK_FROM_HERE,
       new DelayedRunOrderTask(1, web_frame_scheduler_->timerTaskRunner(),
                               &run_order),
       2.0);
@@ skipping 28 matching lines @@
       new RepeatingTask(web_frame_scheduler_->timerTaskRunner(), &run_count),
       1.0);
 
   mock_task_runner_->RunForPeriod(base::TimeDelta::FromSeconds(1));
   EXPECT_EQ(1000, run_count);
 }
 
 TEST_F(WebViewSchedulerImplTest, VirtualTimeSettings_NewWebFrameScheduler) {
   std::vector<int> run_order;
 
-  web_view_scheduler_->setAllowVirtualTimeToAdvance(false);
+  web_view_scheduler_->setVirtualTimePolicy(VirtualTimePolicy::PAUSE);
   web_view_scheduler_->enableVirtualTime();
 
   std::unique_ptr<WebFrameSchedulerImpl> web_frame_scheduler =
       web_view_scheduler_->createWebFrameSchedulerImpl(nullptr);
 
   web_frame_scheduler->timerTaskRunner()->postDelayedTask(
       BLINK_FROM_HERE, new RunOrderTask(1, &run_order), 0.1);
 
   mock_task_runner_->RunUntilIdle();
   EXPECT_TRUE(run_order.empty());
 
-  web_view_scheduler_->setAllowVirtualTimeToAdvance(true);
+  web_view_scheduler_->setVirtualTimePolicy(VirtualTimePolicy::ADVANCE);
   mock_task_runner_->RunUntilIdle();
 
   EXPECT_THAT(run_order, ElementsAre(1));
 }
 
 namespace {
 class DeleteWebFrameSchedulerTask : public blink::WebTaskRunner::Task {
  public:
   explicit DeleteWebFrameSchedulerTask(WebViewSchedulerImpl* web_view_scheduler)
       : web_frame_scheduler_(
@@ skipping 57 matching lines @@
   // Note this will run at time t = 10s since we start at time t = 5000us, and
   // it will prevent further tasks from running (i.e. the RepeatingTask) by
   // deleting the WebFrameScheduler.
   timer_task_runner->postDelayedTask(BLINK_FROM_HERE, delete_frame_task,
                                      9990.0);
 
   mock_task_runner_->RunForPeriod(base::TimeDelta::FromSeconds(100));
   EXPECT_EQ(10, run_count);
 }
 
+TEST_F(WebViewSchedulerImplTest,
+       VirtualTimePolicy_PAUSE_IF_NETWORK_FETCHES_PENDING) {
+  web_view_scheduler_->setVirtualTimePolicy(
+      VirtualTimePolicy::PAUSE_IF_NETWORK_FETCHES_PENDING);
+  EXPECT_TRUE(web_view_scheduler_->virtualTimeAllowedToAdvance());
+
+  web_view_scheduler_->incrementPendingResourceLoadCount();
+  EXPECT_FALSE(web_view_scheduler_->virtualTimeAllowedToAdvance());
+
+  web_view_scheduler_->incrementPendingResourceLoadCount();
+  EXPECT_FALSE(web_view_scheduler_->virtualTimeAllowedToAdvance());
+
+  web_view_scheduler_->decrementPendingResourceLoadCount();
+  EXPECT_FALSE(web_view_scheduler_->virtualTimeAllowedToAdvance());
+
+  web_view_scheduler_->incrementPendingResourceLoadCount();
+  EXPECT_FALSE(web_view_scheduler_->virtualTimeAllowedToAdvance());
+
+  web_view_scheduler_->decrementPendingResourceLoadCount();
+  EXPECT_FALSE(web_view_scheduler_->virtualTimeAllowedToAdvance());
+
+  web_view_scheduler_->decrementPendingResourceLoadCount();
+  EXPECT_TRUE(web_view_scheduler_->virtualTimeAllowedToAdvance());
+}
+
 }  // namespace scheduler