cc/scheduler/scheduler_unittest.cc

   1 // Copyright 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4 #include "cc/scheduler/scheduler.h"
   5
   6 #include <string>
   7 #include <vector>
   8
   9 #include "base/logging.h"
  10 #include "base/memory/scoped_vector.h"
  11 #include "base/message_loop/message_loop.h"
  12 #include "base/run_loop.h"
  13 #include "base/test/test_simple_task_runner.h"
  14 #include "base/time/time.h"
  15 #include "cc/test/scheduler_test_common.h"
  16 #include "testing/gmock/include/gmock/gmock.h"
  17 #include "testing/gtest/include/gtest/gtest.h"
  18
  19 #define EXPECT_ACTION(action, client, action_index, expected_num_actions) \
  20   EXPECT_EQ(expected_num_actions, client.num_actions_());                 \
  21   ASSERT_LT(action_index, client.num_actions_());                         \
  22   do {                                                                    \
  23     EXPECT_STREQ(action, client.Action(action_index));                    \
  24     for (int i = expected_num_actions; i < client.num_actions_(); ++i)    \
  25       ADD_FAILURE() << "Unexpected action: " << client.Action(i) <<       \
  26           " with state:\n" << client.StateForAction(action_index);        \
  27   } while (false)
  28
  29 #define EXPECT_SINGLE_ACTION(action, client) \
  30   EXPECT_ACTION(action, client, 0, 1)
  31
  32 namespace cc {
  33 namespace {
  34
  35 class FakeSchedulerClient;
  36
  37 void InitializeOutputSurfaceAndFirstCommit(Scheduler* scheduler,
  38                                            FakeSchedulerClient* client);
  39
  40 class FakeSchedulerClient : public SchedulerClient {
  41  public:
  42   FakeSchedulerClient() : needs_begin_frame_(false), automatic_swap_ack_(true) {
  43     Reset();
  44   }
  45
  46   void Reset() {
  47     actions_.clear();
  48     states_.clear();
  49     draw_will_happen_ = true;
  50     swap_will_happen_if_draw_happens_ = true;
  51     num_draws_ = 0;
  52     log_anticipated_draw_time_change_ = false;
  53   }
  54
  55   Scheduler* CreateScheduler(const SchedulerSettings& settings) {
  56     task_runner_ = new base::TestSimpleTaskRunner;
  57     scheduler_ = Scheduler::Create(this, settings, 0, task_runner_);
  58     return scheduler_.get();
  59   }
  60
  61   // Most tests don't care about DidAnticipatedDrawTimeChange, so only record it
  62   // for tests that do.
  63   void set_log_anticipated_draw_time_change(bool log) {
  64     log_anticipated_draw_time_change_ = log;
  65   }
  66   bool needs_begin_frame() { return needs_begin_frame_; }
  67   int num_draws() const { return num_draws_; }
  68   int num_actions_() const { return static_cast<int>(actions_.size()); }
  69   const char* Action(int i) const { return actions_[i]; }
  70   base::Value& StateForAction(int i) const { return *states_[i]; }
  71   base::TimeTicks posted_begin_impl_frame_deadline() const {
  72     return posted_begin_impl_frame_deadline_;
  73   }
  74
  75   base::TestSimpleTaskRunner& task_runner() { return *task_runner_; }
  76
  77   int ActionIndex(const char* action) const {
  78     for (size_t i = 0; i < actions_.size(); i++)
  79       if (!strcmp(actions_[i], action))
  80         return i;
  81     return -1;
  82   }
  83
  84   bool HasAction(const char* action) const {
  85     return ActionIndex(action) >= 0;
  86   }
  87
  88   void SetDrawWillHappen(bool draw_will_happen) {
  89     draw_will_happen_ = draw_will_happen;
  90   }
  91   void SetSwapWillHappenIfDrawHappens(bool swap_will_happen_if_draw_happens) {
  92     swap_will_happen_if_draw_happens_ = swap_will_happen_if_draw_happens;
  93   }
  94   void SetAutomaticSwapAck(bool automatic_swap_ack) {
  95     automatic_swap_ack_ = automatic_swap_ack;
  96   }
  97
  98   // SchedulerClient implementation.
  99   virtual void SetNeedsBeginFrame(bool enable) OVERRIDE {
 100     actions_.push_back("SetNeedsBeginFrame");
 101     states_.push_back(scheduler_->StateAsValue().release());
 102     needs_begin_frame_ = enable;
 103   }
 104   virtual void WillBeginImplFrame(const BeginFrameArgs& args) OVERRIDE {
 105     actions_.push_back("WillBeginImplFrame");
 106     states_.push_back(scheduler_->StateAsValue().release());
 107   }
 108   virtual void ScheduledActionSendBeginMainFrame() OVERRIDE {
 109     actions_.push_back("ScheduledActionSendBeginMainFrame");
 110     states_.push_back(scheduler_->StateAsValue().release());
 111   }
 112   virtual void ScheduledActionAnimate() OVERRIDE {
 113     actions_.push_back("ScheduledActionAnimate");
 114     states_.push_back(scheduler_->StateAsValue().release());
 115   }
 116   virtual DrawSwapReadbackResult ScheduledActionDrawAndSwapIfPossible()
 117       OVERRIDE {
 118     actions_.push_back("ScheduledActionDrawAndSwapIfPossible");
 119     states_.push_back(scheduler_->StateAsValue().release());
 120     num_draws_++;
 121     bool did_readback = false;
 122     DrawSwapReadbackResult::DrawResult result =
 123         draw_will_happen_
 124             ? DrawSwapReadbackResult::DRAW_SUCCESS
 125             : DrawSwapReadbackResult::DRAW_ABORTED_CHECKERBOARD_ANIMATIONS;
 126     bool swap_will_happen =
 127         draw_will_happen_ && swap_will_happen_if_draw_happens_;
 128     if (swap_will_happen) {
 129       scheduler_->DidSwapBuffers();
 130       if (automatic_swap_ack_)
 131         scheduler_->DidSwapBuffersComplete();
 132     }
 133     return DrawSwapReadbackResult(
 134         result,
 135         draw_will_happen_ && swap_will_happen_if_draw_happens_,
 136         did_readback);
 137   }
 138   virtual DrawSwapReadbackResult ScheduledActionDrawAndSwapForced() OVERRIDE {
 139     actions_.push_back("ScheduledActionDrawAndSwapForced");
 140     states_.push_back(scheduler_->StateAsValue().release());
 141     bool did_request_swap = swap_will_happen_if_draw_happens_;
 142     bool did_readback = false;
 143     return DrawSwapReadbackResult(
 144         DrawSwapReadbackResult::DRAW_SUCCESS, did_request_swap, did_readback);
 145   }
 146   virtual DrawSwapReadbackResult ScheduledActionDrawAndReadback() OVERRIDE {
 147     actions_.push_back("ScheduledActionDrawAndReadback");
 148     states_.push_back(scheduler_->StateAsValue().release());
 149     bool did_request_swap = false;
 150     bool did_readback = true;
 151     return DrawSwapReadbackResult(
 152         DrawSwapReadbackResult::DRAW_SUCCESS, did_request_swap, did_readback);
 153   }
 154   virtual void ScheduledActionCommit() OVERRIDE {
 155     actions_.push_back("ScheduledActionCommit");
 156     states_.push_back(scheduler_->StateAsValue().release());
 157   }
 158   virtual void ScheduledActionUpdateVisibleTiles() OVERRIDE {
 159     actions_.push_back("ScheduledActionUpdateVisibleTiles");
 160     states_.push_back(scheduler_->StateAsValue().release());
 161   }
 162   virtual void ScheduledActionActivatePendingTree() OVERRIDE {
 163     actions_.push_back("ScheduledActionActivatePendingTree");
 164     states_.push_back(scheduler_->StateAsValue().release());
 165   }
 166   virtual void ScheduledActionBeginOutputSurfaceCreation() OVERRIDE {
 167     actions_.push_back("ScheduledActionBeginOutputSurfaceCreation");
 168     states_.push_back(scheduler_->StateAsValue().release());
 169   }
 170   virtual void ScheduledActionManageTiles() OVERRIDE {
 171     actions_.push_back("ScheduledActionManageTiles");
 172     states_.push_back(scheduler_->StateAsValue().release());
 173   }
 174   virtual void DidAnticipatedDrawTimeChange(base::TimeTicks) OVERRIDE {
 175     if (log_anticipated_draw_time_change_)
 176       actions_.push_back("DidAnticipatedDrawTimeChange");
 177   }
 178   virtual base::TimeDelta DrawDurationEstimate() OVERRIDE {
 179     return base::TimeDelta();
 180   }
 181   virtual base::TimeDelta BeginMainFrameToCommitDurationEstimate() OVERRIDE {
 182     return base::TimeDelta();
 183   }
 184   virtual base::TimeDelta CommitToActivateDurationEstimate() OVERRIDE {
 185     return base::TimeDelta();
 186   }
 187
 188   virtual void DidBeginImplFrameDeadline() OVERRIDE {}
 189
 190  protected:
 191   bool needs_begin_frame_;
 192   bool draw_will_happen_;
 193   bool swap_will_happen_if_draw_happens_;
 194   bool automatic_swap_ack_;
 195   int num_draws_;
 196   bool log_anticipated_draw_time_change_;
 197   base::TimeTicks posted_begin_impl_frame_deadline_;
 198   std::vector<const char*> actions_;
 199   ScopedVector<base::Value> states_;
 200   scoped_ptr<Scheduler> scheduler_;
 201   scoped_refptr<base::TestSimpleTaskRunner> task_runner_;
 202 };
 203
 204 void InitializeOutputSurfaceAndFirstCommit(Scheduler* scheduler,
 205                                            FakeSchedulerClient* client) {
 206   bool client_initiates_begin_frame =
 207       scheduler->settings().begin_frame_scheduling_enabled &&
 208       scheduler->settings().throttle_frame_production;
 209
 210   scheduler->DidCreateAndInitializeOutputSurface();
 211   scheduler->SetNeedsCommit();
 212   scheduler->NotifyBeginMainFrameStarted();
 213   scheduler->NotifyReadyToCommit();
 214   // Go through the motions to draw the commit.
 215   if (client_initiates_begin_frame)
 216     scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 217   else
 218     client->task_runner().RunPendingTasks();  // Run posted BeginFrame.
 219
 220   // Run the posted deadline task.
 221   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 222   client->task_runner().RunPendingTasks();
 223   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 224
 225   // We need another BeginImplFrame so Scheduler calls
 226   // SetNeedsBeginFrame(false).
 227   if (client_initiates_begin_frame)
 228     scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 229   else
 230     client->task_runner().RunPendingTasks();  // Run posted BeginFrame.
 231
 232   // Run the posted deadline task.
 233   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 234   client->task_runner().RunPendingTasks();
 235   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 236 }
 237
 238 TEST(SchedulerTest, InitializeOutputSurfaceDoesNotBeginImplFrame) {
 239   FakeSchedulerClient client;
 240   SchedulerSettings default_scheduler_settings;
 241   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 242   scheduler->SetCanStart();
 243   scheduler->SetVisible(true);
 244   scheduler->SetCanDraw(true);
 245
 246   EXPECT_SINGLE_ACTION("ScheduledActionBeginOutputSurfaceCreation", client);
 247   client.Reset();
 248   scheduler->DidCreateAndInitializeOutputSurface();
 249   EXPECT_EQ(0, client.num_actions_());
 250 }
 251
 252 TEST(SchedulerTest, RequestCommit) {
 253   FakeSchedulerClient client;
 254   SchedulerSettings scheduler_settings;
 255   Scheduler* scheduler = client.CreateScheduler(scheduler_settings);
 256   scheduler->SetCanStart();
 257   scheduler->SetVisible(true);
 258   scheduler->SetCanDraw(true);
 259
 260   EXPECT_SINGLE_ACTION("ScheduledActionBeginOutputSurfaceCreation", client);
 261   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
 262
 263   // SetNeedsCommit should begin the frame on the next BeginImplFrame.
 264   client.Reset();
 265   scheduler->SetNeedsCommit();
 266   EXPECT_TRUE(client.needs_begin_frame());
 267   EXPECT_SINGLE_ACTION("SetNeedsBeginFrame", client);
 268   client.Reset();
 269
 270   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 271   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 272   EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client, 1, 2);
 273   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 274   EXPECT_TRUE(client.needs_begin_frame());
 275   client.Reset();
 276
 277   // If we don't swap on the deadline, we wait for the next BeginFrame.
 278   client.task_runner().RunPendingTasks();  // Run posted deadline.
 279   EXPECT_EQ(0, client.num_actions_());
 280   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 281   EXPECT_TRUE(client.needs_begin_frame());
 282   client.Reset();
 283
 284   // NotifyReadyToCommit should trigger the commit.
 285   scheduler->NotifyBeginMainFrameStarted();
 286   scheduler->NotifyReadyToCommit();
 287   EXPECT_SINGLE_ACTION("ScheduledActionCommit", client);
 288   EXPECT_TRUE(client.needs_begin_frame());
 289   client.Reset();
 290
 291   // BeginImplFrame should prepare the draw.
 292   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 293   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 294   EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
 295   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 296   EXPECT_TRUE(client.needs_begin_frame());
 297   client.Reset();
 298
 299   // BeginImplFrame deadline should draw.
 300   client.task_runner().RunPendingTasks();  // Run posted deadline.
 301   EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client, 0, 1);
 302   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 303   EXPECT_TRUE(client.needs_begin_frame());
 304   client.Reset();
 305
 306   // The following BeginImplFrame deadline should SetNeedsBeginFrame(false)
 307   // to avoid excessive toggles.
 308   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 309   EXPECT_SINGLE_ACTION("WillBeginImplFrame", client);
 310   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 311   client.Reset();
 312
 313   client.task_runner().RunPendingTasks();  // Run posted deadline.
 314   EXPECT_SINGLE_ACTION("SetNeedsBeginFrame", client);
 315   EXPECT_FALSE(client.needs_begin_frame());
 316   client.Reset();
 317 }
 318
 319 TEST(SchedulerTest, RequestCommitAfterBeginMainFrameSent) {
 320   FakeSchedulerClient client;
 321   SchedulerSettings scheduler_settings;
 322   Scheduler* scheduler = client.CreateScheduler(scheduler_settings);
 323   scheduler->SetCanStart();
 324   scheduler->SetVisible(true);
 325   scheduler->SetCanDraw(true);
 326
 327   EXPECT_SINGLE_ACTION("ScheduledActionBeginOutputSurfaceCreation", client);
 328   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
 329   client.Reset();
 330
 331   // SetNeedsCommit should begin the frame.
 332   scheduler->SetNeedsCommit();
 333   EXPECT_SINGLE_ACTION("SetNeedsBeginFrame", client);
 334
 335   client.Reset();
 336   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 337   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 338   EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client, 1, 2);
 339   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 340
 341   EXPECT_TRUE(client.needs_begin_frame());
 342   client.Reset();
 343
 344   // Now SetNeedsCommit again. Calling here means we need a second commit.
 345   scheduler->SetNeedsCommit();
 346   EXPECT_EQ(client.num_actions_(), 0);
 347   client.Reset();
 348
 349   // Finish the first commit.
 350   scheduler->NotifyBeginMainFrameStarted();
 351   scheduler->NotifyReadyToCommit();
 352   EXPECT_SINGLE_ACTION("ScheduledActionCommit", client);
 353   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 354   client.Reset();
 355   client.task_runner().RunPendingTasks();  // Run posted deadline.
 356   EXPECT_ACTION("ScheduledActionAnimate", client, 0, 2);
 357   EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client, 1, 2);
 358   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 359
 360   // Because we just swapped, the Scheduler should also request the next
 361   // BeginImplFrame from the OutputSurface.
 362   EXPECT_TRUE(client.needs_begin_frame());
 363   client.Reset();
 364   // Since another commit is needed, the next BeginImplFrame should initiate
 365   // the second commit.
 366   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 367   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 368   EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client, 1, 2);
 369   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 370   client.Reset();
 371
 372   // Finishing the commit before the deadline should post a new deadline task
 373   // to trigger the deadline early.
 374   scheduler->NotifyBeginMainFrameStarted();
 375   scheduler->NotifyReadyToCommit();
 376   EXPECT_SINGLE_ACTION("ScheduledActionCommit", client);
 377   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 378   client.Reset();
 379   client.task_runner().RunPendingTasks();  // Run posted deadline.
 380   EXPECT_ACTION("ScheduledActionAnimate", client, 0, 2);
 381   EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client, 1, 2);
 382   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 383   EXPECT_TRUE(client.needs_begin_frame());
 384   client.Reset();
 385
 386   // On the next BeginImplFrame, verify we go back to a quiescent state and
 387   // no longer request BeginImplFrames.
 388   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 389   client.task_runner().RunPendingTasks();  // Run posted deadline.
 390   EXPECT_FALSE(client.needs_begin_frame());
 391   client.Reset();
 392 }
 393
 394 class SchedulerClientThatsetNeedsDrawInsideDraw : public FakeSchedulerClient {
 395  public:
 396   virtual void ScheduledActionSendBeginMainFrame() OVERRIDE {}
 397   virtual DrawSwapReadbackResult ScheduledActionDrawAndSwapIfPossible()
 398       OVERRIDE {
 399     // Only SetNeedsRedraw the first time this is called
 400     if (!num_draws_)
 401       scheduler_->SetNeedsRedraw();
 402     return FakeSchedulerClient::ScheduledActionDrawAndSwapIfPossible();
 403   }
 404
 405   virtual DrawSwapReadbackResult ScheduledActionDrawAndSwapForced() OVERRIDE {
 406     NOTREACHED();
 407     bool did_request_swap = true;
 408     bool did_readback = false;
 409     return DrawSwapReadbackResult(
 410         DrawSwapReadbackResult::DRAW_SUCCESS, did_request_swap, did_readback);
 411   }
 412
 413   virtual void ScheduledActionCommit() OVERRIDE {}
 414   virtual void ScheduledActionBeginOutputSurfaceCreation() OVERRIDE {}
 415   virtual void DidAnticipatedDrawTimeChange(base::TimeTicks) OVERRIDE {}
 416 };
 417
 418 // Tests for two different situations:
 419 // 1. the scheduler dropping SetNeedsRedraw requests that happen inside
 420 //    a ScheduledActionDrawAndSwap
 421 // 2. the scheduler drawing twice inside a single tick
 422 TEST(SchedulerTest, RequestRedrawInsideDraw) {
 423   SchedulerClientThatsetNeedsDrawInsideDraw client;
 424   SchedulerSettings default_scheduler_settings;
 425   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 426   scheduler->SetCanStart();
 427   scheduler->SetVisible(true);
 428   scheduler->SetCanDraw(true);
 429   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
 430   client.Reset();
 431
 432   scheduler->SetNeedsRedraw();
 433   EXPECT_TRUE(scheduler->RedrawPending());
 434   EXPECT_TRUE(client.needs_begin_frame());
 435   EXPECT_EQ(0, client.num_draws());
 436
 437   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 438   client.task_runner().RunPendingTasks();  // Run posted deadline.
 439   EXPECT_EQ(1, client.num_draws());
 440   EXPECT_TRUE(scheduler->RedrawPending());
 441   EXPECT_TRUE(client.needs_begin_frame());
 442
 443   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 444   client.task_runner().RunPendingTasks();  // Run posted deadline.
 445   EXPECT_EQ(2, client.num_draws());
 446   EXPECT_FALSE(scheduler->RedrawPending());
 447   EXPECT_TRUE(client.needs_begin_frame());
 448
 449   // We stop requesting BeginImplFrames after a BeginImplFrame where we don't
 450   // swap.
 451   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 452   client.task_runner().RunPendingTasks();  // Run posted deadline.
 453   EXPECT_EQ(2, client.num_draws());
 454   EXPECT_FALSE(scheduler->RedrawPending());
 455   EXPECT_FALSE(client.needs_begin_frame());
 456 }
 457
 458 // Test that requesting redraw inside a failed draw doesn't lose the request.
 459 TEST(SchedulerTest, RequestRedrawInsideFailedDraw) {
 460   SchedulerClientThatsetNeedsDrawInsideDraw client;
 461   SchedulerSettings default_scheduler_settings;
 462   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 463   scheduler->SetCanStart();
 464   scheduler->SetVisible(true);
 465   scheduler->SetCanDraw(true);
 466   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
 467   client.Reset();
 468
 469   client.SetDrawWillHappen(false);
 470
 471   scheduler->SetNeedsRedraw();
 472   EXPECT_TRUE(scheduler->RedrawPending());
 473   EXPECT_TRUE(client.needs_begin_frame());
 474   EXPECT_EQ(0, client.num_draws());
 475
 476   // Fail the draw.
 477   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 478   client.task_runner().RunPendingTasks();  // Run posted deadline.
 479   EXPECT_EQ(1, client.num_draws());
 480
 481   // We have a commit pending and the draw failed, and we didn't lose the redraw
 482   // request.
 483   EXPECT_TRUE(scheduler->CommitPending());
 484   EXPECT_TRUE(scheduler->RedrawPending());
 485   EXPECT_TRUE(client.needs_begin_frame());
 486
 487   // Fail the draw again.
 488   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 489   client.task_runner().RunPendingTasks();  // Run posted deadline.
 490   EXPECT_EQ(2, client.num_draws());
 491   EXPECT_TRUE(scheduler->CommitPending());
 492   EXPECT_TRUE(scheduler->RedrawPending());
 493   EXPECT_TRUE(client.needs_begin_frame());
 494
 495   // Draw successfully.
 496   client.SetDrawWillHappen(true);
 497   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 498   client.task_runner().RunPendingTasks();  // Run posted deadline.
 499   EXPECT_EQ(3, client.num_draws());
 500   EXPECT_TRUE(scheduler->CommitPending());
 501   EXPECT_FALSE(scheduler->RedrawPending());
 502   EXPECT_TRUE(client.needs_begin_frame());
 503 }
 504
 505 class SchedulerClientThatSetNeedsCommitInsideDraw : public FakeSchedulerClient {
 506  public:
 507   SchedulerClientThatSetNeedsCommitInsideDraw()
 508       : set_needs_commit_on_next_draw_(false) {}
 509
 510   virtual void ScheduledActionSendBeginMainFrame() OVERRIDE {}
 511   virtual DrawSwapReadbackResult ScheduledActionDrawAndSwapIfPossible()
 512       OVERRIDE {
 513     // Only SetNeedsCommit the first time this is called
 514     if (set_needs_commit_on_next_draw_) {
 515       scheduler_->SetNeedsCommit();
 516       set_needs_commit_on_next_draw_ = false;
 517     }
 518     return FakeSchedulerClient::ScheduledActionDrawAndSwapIfPossible();
 519   }
 520
 521   virtual DrawSwapReadbackResult ScheduledActionDrawAndSwapForced() OVERRIDE {
 522     NOTREACHED();
 523     bool did_request_swap = false;
 524     bool did_readback = false;
 525     return DrawSwapReadbackResult(
 526         DrawSwapReadbackResult::DRAW_SUCCESS, did_request_swap, did_readback);
 527   }
 528
 529   virtual void ScheduledActionCommit() OVERRIDE {}
 530   virtual void ScheduledActionBeginOutputSurfaceCreation() OVERRIDE {}
 531   virtual void DidAnticipatedDrawTimeChange(base::TimeTicks) OVERRIDE {}
 532
 533   void SetNeedsCommitOnNextDraw() { set_needs_commit_on_next_draw_ = true; }
 534
 535  private:
 536   bool set_needs_commit_on_next_draw_;
 537 };
 538
 539 // Tests for the scheduler infinite-looping on SetNeedsCommit requests that
 540 // happen inside a ScheduledActionDrawAndSwap
 541 TEST(SchedulerTest, RequestCommitInsideDraw) {
 542   SchedulerClientThatSetNeedsCommitInsideDraw client;
 543   SchedulerSettings default_scheduler_settings;
 544   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 545   scheduler->SetCanStart();
 546   scheduler->SetVisible(true);
 547   scheduler->SetCanDraw(true);
 548   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
 549   client.Reset();
 550
 551   EXPECT_FALSE(client.needs_begin_frame());
 552   scheduler->SetNeedsRedraw();
 553   EXPECT_TRUE(scheduler->RedrawPending());
 554   EXPECT_EQ(0, client.num_draws());
 555   EXPECT_TRUE(client.needs_begin_frame());
 556
 557   client.SetNeedsCommitOnNextDraw();
 558   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 559   client.SetNeedsCommitOnNextDraw();
 560   client.task_runner().RunPendingTasks();  // Run posted deadline.
 561   EXPECT_EQ(1, client.num_draws());
 562   EXPECT_TRUE(scheduler->CommitPending());
 563   EXPECT_TRUE(client.needs_begin_frame());
 564   scheduler->NotifyBeginMainFrameStarted();
 565   scheduler->NotifyReadyToCommit();
 566
 567   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 568   client.task_runner().RunPendingTasks();  // Run posted deadline.
 569   EXPECT_EQ(2, client.num_draws());
 570
 571   EXPECT_FALSE(scheduler->RedrawPending());
 572   EXPECT_FALSE(scheduler->CommitPending());
 573   EXPECT_TRUE(client.needs_begin_frame());
 574
 575   // We stop requesting BeginImplFrames after a BeginImplFrame where we don't
 576   // swap.
 577   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 578   client.task_runner().RunPendingTasks();  // Run posted deadline.
 579   EXPECT_EQ(2, client.num_draws());
 580   EXPECT_FALSE(scheduler->RedrawPending());
 581   EXPECT_FALSE(scheduler->CommitPending());
 582   EXPECT_FALSE(client.needs_begin_frame());
 583 }
 584
 585 // Tests that when a draw fails then the pending commit should not be dropped.
 586 TEST(SchedulerTest, RequestCommitInsideFailedDraw) {
 587   SchedulerClientThatsetNeedsDrawInsideDraw client;
 588   SchedulerSettings default_scheduler_settings;
 589   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 590   scheduler->SetCanStart();
 591   scheduler->SetVisible(true);
 592   scheduler->SetCanDraw(true);
 593   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
 594   client.Reset();
 595
 596   client.SetDrawWillHappen(false);
 597
 598   scheduler->SetNeedsRedraw();
 599   EXPECT_TRUE(scheduler->RedrawPending());
 600   EXPECT_TRUE(client.needs_begin_frame());
 601   EXPECT_EQ(0, client.num_draws());
 602
 603   // Fail the draw.
 604   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 605   client.task_runner().RunPendingTasks();  // Run posted deadline.
 606   EXPECT_EQ(1, client.num_draws());
 607
 608   // We have a commit pending and the draw failed, and we didn't lose the commit
 609   // request.
 610   EXPECT_TRUE(scheduler->CommitPending());
 611   EXPECT_TRUE(scheduler->RedrawPending());
 612   EXPECT_TRUE(client.needs_begin_frame());
 613
 614   // Fail the draw again.
 615   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 616
 617   client.task_runner().RunPendingTasks();  // Run posted deadline.
 618   EXPECT_EQ(2, client.num_draws());
 619   EXPECT_TRUE(scheduler->CommitPending());
 620   EXPECT_TRUE(scheduler->RedrawPending());
 621   EXPECT_TRUE(client.needs_begin_frame());
 622
 623   // Draw successfully.
 624   client.SetDrawWillHappen(true);
 625   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 626   client.task_runner().RunPendingTasks();  // Run posted deadline.
 627   EXPECT_EQ(3, client.num_draws());
 628   EXPECT_TRUE(scheduler->CommitPending());
 629   EXPECT_FALSE(scheduler->RedrawPending());
 630   EXPECT_TRUE(client.needs_begin_frame());
 631 }
 632
 633 TEST(SchedulerTest, NoSwapWhenDrawFails) {
 634   SchedulerClientThatSetNeedsCommitInsideDraw client;
 635   SchedulerSettings default_scheduler_settings;
 636   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 637   scheduler->SetCanStart();
 638   scheduler->SetVisible(true);
 639   scheduler->SetCanDraw(true);
 640   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
 641   client.Reset();
 642
 643   scheduler->SetNeedsRedraw();
 644   EXPECT_TRUE(scheduler->RedrawPending());
 645   EXPECT_TRUE(client.needs_begin_frame());
 646   EXPECT_EQ(0, client.num_draws());
 647
 648   // Draw successfully, this starts a new frame.
 649   client.SetNeedsCommitOnNextDraw();
 650   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 651   client.task_runner().RunPendingTasks();  // Run posted deadline.
 652   EXPECT_EQ(1, client.num_draws());
 653
 654   scheduler->SetNeedsRedraw();
 655   EXPECT_TRUE(scheduler->RedrawPending());
 656   EXPECT_TRUE(client.needs_begin_frame());
 657
 658   // Fail to draw, this should not start a frame.
 659   client.SetDrawWillHappen(false);
 660   client.SetNeedsCommitOnNextDraw();
 661   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 662   client.task_runner().RunPendingTasks();  // Run posted deadline.
 663   EXPECT_EQ(2, client.num_draws());
 664 }
 665
 666 TEST(SchedulerTest, NoSwapWhenSwapFailsDuringForcedCommit) {
 667   FakeSchedulerClient client;
 668   SchedulerSettings default_scheduler_settings;
 669   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 670
 671   // Tell the client that it will fail to swap.
 672   client.SetDrawWillHappen(true);
 673   client.SetSwapWillHappenIfDrawHappens(false);
 674
 675   // Get the compositor to do a ScheduledActionDrawAndReadback.
 676   scheduler->SetCanDraw(true);
 677   scheduler->SetNeedsRedraw();
 678   scheduler->SetNeedsForcedCommitForReadback();
 679   scheduler->NotifyBeginMainFrameStarted();
 680   scheduler->NotifyReadyToCommit();
 681   EXPECT_TRUE(client.HasAction("ScheduledActionDrawAndReadback"));
 682 }
 683
 684 TEST(SchedulerTest, BackToBackReadbackAllowed) {
 685   // Some clients call readbacks twice in a row before the replacement
 686   // commit comes in.  Make sure it is allowed.
 687   FakeSchedulerClient client;
 688   SchedulerSettings default_scheduler_settings;
 689   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 690
 691   // Get the compositor to do 2 ScheduledActionDrawAndReadbacks before
 692   // the replacement commit comes in.
 693   scheduler->SetCanDraw(true);
 694   scheduler->SetNeedsRedraw();
 695   scheduler->SetNeedsForcedCommitForReadback();
 696   scheduler->NotifyBeginMainFrameStarted();
 697   scheduler->NotifyReadyToCommit();
 698   EXPECT_TRUE(client.HasAction("ScheduledActionDrawAndReadback"));
 699
 700   client.Reset();
 701   scheduler->SetNeedsForcedCommitForReadback();
 702   scheduler->NotifyBeginMainFrameStarted();
 703   scheduler->NotifyReadyToCommit();
 704   EXPECT_TRUE(client.HasAction("ScheduledActionDrawAndReadback"));
 705
 706   // The replacement commit comes in after 2 readbacks.
 707   client.Reset();
 708   scheduler->NotifyBeginMainFrameStarted();
 709   scheduler->NotifyReadyToCommit();
 710 }
 711
 712
 713 class SchedulerClientNeedsManageTilesInDraw : public FakeSchedulerClient {
 714  public:
 715   virtual DrawSwapReadbackResult ScheduledActionDrawAndSwapIfPossible()
 716       OVERRIDE {
 717     scheduler_->SetNeedsManageTiles();
 718     return FakeSchedulerClient::ScheduledActionDrawAndSwapIfPossible();
 719   }
 720 };
 721
 722 // Test manage tiles is independant of draws.
 723 TEST(SchedulerTest, ManageTiles) {
 724   SchedulerClientNeedsManageTilesInDraw client;
 725   SchedulerSettings default_scheduler_settings;
 726   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 727   scheduler->SetCanStart();
 728   scheduler->SetVisible(true);
 729   scheduler->SetCanDraw(true);
 730   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
 731
 732   // Request both draw and manage tiles. ManageTiles shouldn't
 733   // be trigged until BeginImplFrame.
 734   client.Reset();
 735   scheduler->SetNeedsManageTiles();
 736   scheduler->SetNeedsRedraw();
 737   EXPECT_TRUE(scheduler->RedrawPending());
 738   EXPECT_TRUE(scheduler->ManageTilesPending());
 739   EXPECT_TRUE(client.needs_begin_frame());
 740   EXPECT_EQ(0, client.num_draws());
 741   EXPECT_FALSE(client.HasAction("ScheduledActionManageTiles"));
 742   EXPECT_FALSE(client.HasAction("ScheduledActionDrawAndSwapIfPossible"));
 743
 744   // We have no immediate actions to perform, so the BeginImplFrame should post
 745   // the deadline task.
 746   client.Reset();
 747   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 748   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 749   EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
 750   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 751
 752   // On the deadline, he actions should have occured in the right order.
 753   client.Reset();
 754   client.task_runner().RunPendingTasks();  // Run posted deadline.
 755   EXPECT_EQ(1, client.num_draws());
 756   EXPECT_TRUE(client.HasAction("ScheduledActionDrawAndSwapIfPossible"));
 757   EXPECT_TRUE(client.HasAction("ScheduledActionManageTiles"));
 758   EXPECT_LT(client.ActionIndex("ScheduledActionDrawAndSwapIfPossible"),
 759             client.ActionIndex("ScheduledActionManageTiles"));
 760   EXPECT_FALSE(scheduler->RedrawPending());
 761   EXPECT_FALSE(scheduler->ManageTilesPending());
 762   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 763
 764   // Request a draw. We don't need a ManageTiles yet.
 765   client.Reset();
 766   scheduler->SetNeedsRedraw();
 767   EXPECT_TRUE(scheduler->RedrawPending());
 768   EXPECT_FALSE(scheduler->ManageTilesPending());
 769   EXPECT_TRUE(client.needs_begin_frame());
 770   EXPECT_EQ(0, client.num_draws());
 771
 772   // We have no immediate actions to perform, so the BeginImplFrame should post
 773   // the deadline task.
 774   client.Reset();
 775   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 776   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 777   EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
 778   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 779
 780   // Draw. The draw will trigger SetNeedsManageTiles, and
 781   // then the ManageTiles action will be triggered after the Draw.
 782   // Afterwards, neither a draw nor ManageTiles are pending.
 783   client.Reset();
 784   client.task_runner().RunPendingTasks();  // Run posted deadline.
 785   EXPECT_EQ(1, client.num_draws());
 786   EXPECT_TRUE(client.HasAction("ScheduledActionDrawAndSwapIfPossible"));
 787   EXPECT_TRUE(client.HasAction("ScheduledActionManageTiles"));
 788   EXPECT_LT(client.ActionIndex("ScheduledActionDrawAndSwapIfPossible"),
 789             client.ActionIndex("ScheduledActionManageTiles"));
 790   EXPECT_FALSE(scheduler->RedrawPending());
 791   EXPECT_FALSE(scheduler->ManageTilesPending());
 792   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 793
 794   // We need a BeginImplFrame where we don't swap to go idle.
 795   client.Reset();
 796   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 797   EXPECT_SINGLE_ACTION("WillBeginImplFrame", client);
 798   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 799   client.Reset();
 800   client.task_runner().RunPendingTasks();  // Run posted deadline.
 801   EXPECT_SINGLE_ACTION("SetNeedsBeginFrame", client);
 802   EXPECT_FALSE(client.needs_begin_frame());
 803   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 804   EXPECT_EQ(0, client.num_draws());
 805
 806   // Now trigger a ManageTiles outside of a draw. We will then need
 807   // a begin-frame for the ManageTiles, but we don't need a draw.
 808   client.Reset();
 809   EXPECT_FALSE(client.needs_begin_frame());
 810   scheduler->SetNeedsManageTiles();
 811   EXPECT_TRUE(client.needs_begin_frame());
 812   EXPECT_TRUE(scheduler->ManageTilesPending());
 813   EXPECT_FALSE(scheduler->RedrawPending());
 814
 815   // BeginImplFrame. There will be no draw, only ManageTiles.
 816   client.Reset();
 817   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 818   EXPECT_SINGLE_ACTION("WillBeginImplFrame", client);
 819   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 820   client.Reset();
 821   client.task_runner().RunPendingTasks();  // Run posted deadline.
 822   EXPECT_EQ(0, client.num_draws());
 823   EXPECT_FALSE(client.HasAction("ScheduledActionDrawAndSwapIfPossible"));
 824   EXPECT_TRUE(client.HasAction("ScheduledActionManageTiles"));
 825   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 826 }
 827
 828 // Test that ManageTiles only happens once per frame.  If an external caller
 829 // initiates it, then the state machine should not ManageTiles on that frame.
 830 TEST(SchedulerTest, ManageTilesOncePerFrame) {
 831   FakeSchedulerClient client;
 832   SchedulerSettings default_scheduler_settings;
 833   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 834   scheduler->SetCanStart();
 835   scheduler->SetVisible(true);
 836   scheduler->SetCanDraw(true);
 837   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
 838
 839   // If DidManageTiles during a frame, then ManageTiles should not occur again.
 840   scheduler->SetNeedsManageTiles();
 841   scheduler->SetNeedsRedraw();
 842   client.Reset();
 843   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 844   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 845   EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
 846   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 847
 848   EXPECT_TRUE(scheduler->ManageTilesPending());
 849   scheduler->DidManageTiles();  // An explicit ManageTiles.
 850   EXPECT_FALSE(scheduler->ManageTilesPending());
 851
 852   client.Reset();
 853   client.task_runner().RunPendingTasks();  // Run posted deadline.
 854   EXPECT_EQ(1, client.num_draws());
 855   EXPECT_TRUE(client.HasAction("ScheduledActionDrawAndSwapIfPossible"));
 856   EXPECT_FALSE(client.HasAction("ScheduledActionManageTiles"));
 857   EXPECT_FALSE(scheduler->RedrawPending());
 858   EXPECT_FALSE(scheduler->ManageTilesPending());
 859   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 860
 861   // Next frame without DidManageTiles should ManageTiles with draw.
 862   scheduler->SetNeedsManageTiles();
 863   scheduler->SetNeedsRedraw();
 864   client.Reset();
 865   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 866   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 867   EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
 868   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 869
 870   client.Reset();
 871   client.task_runner().RunPendingTasks();  // Run posted deadline.
 872   EXPECT_EQ(1, client.num_draws());
 873   EXPECT_TRUE(client.HasAction("ScheduledActionDrawAndSwapIfPossible"));
 874   EXPECT_TRUE(client.HasAction("ScheduledActionManageTiles"));
 875   EXPECT_LT(client.ActionIndex("ScheduledActionDrawAndSwapIfPossible"),
 876             client.ActionIndex("ScheduledActionManageTiles"));
 877   EXPECT_FALSE(scheduler->RedrawPending());
 878   EXPECT_FALSE(scheduler->ManageTilesPending());
 879   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 880   scheduler->DidManageTiles();  // Corresponds to ScheduledActionManageTiles
 881
 882   // If we get another DidManageTiles within the same frame, we should
 883   // not ManageTiles on the next frame.
 884   scheduler->DidManageTiles();  // An explicit ManageTiles.
 885   scheduler->SetNeedsManageTiles();
 886   scheduler->SetNeedsRedraw();
 887   client.Reset();
 888   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 889   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 890   EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
 891   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 892
 893   EXPECT_TRUE(scheduler->ManageTilesPending());
 894
 895   client.Reset();
 896   client.task_runner().RunPendingTasks();  // Run posted deadline.
 897   EXPECT_EQ(1, client.num_draws());
 898   EXPECT_TRUE(client.HasAction("ScheduledActionDrawAndSwapIfPossible"));
 899   EXPECT_FALSE(client.HasAction("ScheduledActionManageTiles"));
 900   EXPECT_FALSE(scheduler->RedrawPending());
 901   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 902
 903   // If we get another DidManageTiles, we should not ManageTiles on the next
 904   // frame. This verifies we don't alternate calling ManageTiles once and twice.
 905   EXPECT_TRUE(scheduler->ManageTilesPending());
 906   scheduler->DidManageTiles();  // An explicit ManageTiles.
 907   EXPECT_FALSE(scheduler->ManageTilesPending());
 908   scheduler->SetNeedsManageTiles();
 909   scheduler->SetNeedsRedraw();
 910   client.Reset();
 911   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 912   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 913   EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
 914   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 915
 916   EXPECT_TRUE(scheduler->ManageTilesPending());
 917
 918   client.Reset();
 919   client.task_runner().RunPendingTasks();  // Run posted deadline.
 920   EXPECT_EQ(1, client.num_draws());
 921   EXPECT_TRUE(client.HasAction("ScheduledActionDrawAndSwapIfPossible"));
 922   EXPECT_FALSE(client.HasAction("ScheduledActionManageTiles"));
 923   EXPECT_FALSE(scheduler->RedrawPending());
 924   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 925
 926   // Next frame without DidManageTiles should ManageTiles with draw.
 927   scheduler->SetNeedsManageTiles();
 928   scheduler->SetNeedsRedraw();
 929   client.Reset();
 930   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 931   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
 932   EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
 933   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
 934
 935   client.Reset();
 936   client.task_runner().RunPendingTasks();  // Run posted deadline.
 937   EXPECT_EQ(1, client.num_draws());
 938   EXPECT_TRUE(client.HasAction("ScheduledActionDrawAndSwapIfPossible"));
 939   EXPECT_TRUE(client.HasAction("ScheduledActionManageTiles"));
 940   EXPECT_LT(client.ActionIndex("ScheduledActionDrawAndSwapIfPossible"),
 941             client.ActionIndex("ScheduledActionManageTiles"));
 942   EXPECT_FALSE(scheduler->RedrawPending());
 943   EXPECT_FALSE(scheduler->ManageTilesPending());
 944   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
 945   scheduler->DidManageTiles();  // Corresponds to ScheduledActionManageTiles
 946 }
 947
 948 TEST(SchedulerTest, TriggerBeginFrameDeadlineEarly) {
 949   SchedulerClientNeedsManageTilesInDraw client;
 950   SchedulerSettings default_scheduler_settings;
 951   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
 952   scheduler->SetCanStart();
 953   scheduler->SetVisible(true);
 954   scheduler->SetCanDraw(true);
 955   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
 956
 957   client.Reset();
 958   scheduler->SetNeedsRedraw();
 959   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
 960
 961   // The deadline should be zero since there is no work other than drawing
 962   // pending.
 963   EXPECT_EQ(base::TimeTicks(), client.posted_begin_impl_frame_deadline());
 964 }
 965
 966 class SchedulerClientWithFixedEstimates : public FakeSchedulerClient {
 967  public:
 968   SchedulerClientWithFixedEstimates(
 969       base::TimeDelta draw_duration,
 970       base::TimeDelta begin_main_frame_to_commit_duration,
 971       base::TimeDelta commit_to_activate_duration)
 972       : draw_duration_(draw_duration),
 973         begin_main_frame_to_commit_duration_(
 974             begin_main_frame_to_commit_duration),
 975         commit_to_activate_duration_(commit_to_activate_duration) {}
 976
 977   virtual base::TimeDelta DrawDurationEstimate() OVERRIDE {
 978     return draw_duration_;
 979   }
 980   virtual base::TimeDelta BeginMainFrameToCommitDurationEstimate() OVERRIDE {
 981     return begin_main_frame_to_commit_duration_;
 982   }
 983   virtual base::TimeDelta CommitToActivateDurationEstimate() OVERRIDE {
 984     return commit_to_activate_duration_;
 985   }
 986
 987  private:
 988     base::TimeDelta draw_duration_;
 989     base::TimeDelta begin_main_frame_to_commit_duration_;
 990     base::TimeDelta commit_to_activate_duration_;
 991 };
 992
 993 void MainFrameInHighLatencyMode(int64 begin_main_frame_to_commit_estimate_in_ms,
 994                                 int64 commit_to_activate_estimate_in_ms,
 995                                 bool smoothness_takes_priority,
 996                                 bool should_send_begin_main_frame) {
 997   // Set up client with specified estimates (draw duration is set to 1).
 998   SchedulerClientWithFixedEstimates client(
 999       base::TimeDelta::FromMilliseconds(1),
1000       base::TimeDelta::FromMilliseconds(
1001           begin_main_frame_to_commit_estimate_in_ms),
1002       base::TimeDelta::FromMilliseconds(commit_to_activate_estimate_in_ms));
1003   SchedulerSettings default_scheduler_settings;
1004   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
1005   scheduler->SetCanStart();
1006   scheduler->SetVisible(true);
1007   scheduler->SetCanDraw(true);
1008   scheduler->SetSmoothnessTakesPriority(smoothness_takes_priority);
1009   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
1010
1011   // Impl thread hits deadline before commit finishes.
1012   client.Reset();
1013   scheduler->SetNeedsCommit();
1014   EXPECT_FALSE(scheduler->MainThreadIsInHighLatencyMode());
1015   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
1016   EXPECT_FALSE(scheduler->MainThreadIsInHighLatencyMode());
1017   client.task_runner().RunPendingTasks();  // Run posted deadline.
1018   EXPECT_TRUE(scheduler->MainThreadIsInHighLatencyMode());
1019   scheduler->NotifyBeginMainFrameStarted();
1020   scheduler->NotifyReadyToCommit();
1021   EXPECT_TRUE(scheduler->MainThreadIsInHighLatencyMode());
1022   EXPECT_TRUE(client.HasAction("ScheduledActionSendBeginMainFrame"));
1023
1024   client.Reset();
1025   scheduler->SetNeedsCommit();
1026   EXPECT_TRUE(scheduler->MainThreadIsInHighLatencyMode());
1027   scheduler->BeginFrame(BeginFrameArgs::CreateForTesting());
1028   EXPECT_TRUE(scheduler->MainThreadIsInHighLatencyMode());
1029   client.task_runner().RunPendingTasks();  // Run posted deadline.
1030   EXPECT_EQ(scheduler->MainThreadIsInHighLatencyMode(),
1031             should_send_begin_main_frame);
1032   EXPECT_EQ(client.HasAction("ScheduledActionSendBeginMainFrame"),
1033             should_send_begin_main_frame);
1034 }
1035
1036 TEST(SchedulerTest,
1037     SkipMainFrameIfHighLatencyAndCanCommitAndActivateBeforeDeadline) {
1038   // Set up client so that estimates indicate that we can commit and activate
1039   // before the deadline (~8ms by default).
1040   MainFrameInHighLatencyMode(1, 1, false, false);
1041 }
1042
1043 TEST(SchedulerTest, NotSkipMainFrameIfHighLatencyAndCanCommitTooLong) {
1044   // Set up client so that estimates indicate that the commit cannot finish
1045   // before the deadline (~8ms by default).
1046   MainFrameInHighLatencyMode(10, 1, false, true);
1047 }
1048
1049 TEST(SchedulerTest, NotSkipMainFrameIfHighLatencyAndCanActivateTooLong) {
1050   // Set up client so that estimates indicate that the activate cannot finish
1051   // before the deadline (~8ms by default).
1052   MainFrameInHighLatencyMode(1, 10, false, true);
1053 }
1054
1055 TEST(SchedulerTest, NotSkipMainFrameInPreferSmoothnessMode) {
1056   // Set up client so that estimates indicate that we can commit and activate
1057   // before the deadline (~8ms by default), but also enable smoothness takes
1058   // priority mode.
1059   MainFrameInHighLatencyMode(1, 1, true, true);
1060 }
1061
1062 TEST(SchedulerTest, PollForCommitCompletion) {
1063   // Since we are simulating a long commit, set up a client with draw duration
1064   // estimates that prevent skipping main frames to get to low latency mode.
1065   SchedulerClientWithFixedEstimates client(
1066       base::TimeDelta::FromMilliseconds(1),
1067       base::TimeDelta::FromMilliseconds(32),
1068       base::TimeDelta::FromMilliseconds(32));
1069   client.set_log_anticipated_draw_time_change(true);
1070   SchedulerSettings default_scheduler_settings;
1071   Scheduler* scheduler = client.CreateScheduler(default_scheduler_settings);
1072
1073   scheduler->SetCanDraw(true);
1074   scheduler->SetCanStart();
1075   scheduler->SetVisible(true);
1076   scheduler->DidCreateAndInitializeOutputSurface();
1077
1078   scheduler->SetNeedsCommit();
1079   EXPECT_TRUE(scheduler->CommitPending());
1080   scheduler->NotifyBeginMainFrameStarted();
1081   scheduler->NotifyReadyToCommit();
1082   scheduler->SetNeedsRedraw();
1083
1084   BeginFrameArgs frame_args = BeginFrameArgs::CreateForTesting();
1085   frame_args.interval = base::TimeDelta::FromMilliseconds(1000);
1086   scheduler->BeginFrame(frame_args);
1087
1088   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1089   client.task_runner().RunPendingTasks();  // Run posted deadline.
1090   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
1091
1092   scheduler->DidSwapBuffers();
1093   scheduler->DidSwapBuffersComplete();
1094
1095   // At this point, we've drawn a frame. Start another commit, but hold off on
1096   // the NotifyReadyToCommit for now.
1097   EXPECT_FALSE(scheduler->CommitPending());
1098   scheduler->SetNeedsCommit();
1099   scheduler->BeginFrame(frame_args);
1100   EXPECT_TRUE(scheduler->CommitPending());
1101
1102   // Draw and swap the frame, but don't ack the swap to simulate the Browser
1103   // blocking on the renderer.
1104   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1105   client.task_runner().RunPendingTasks();  // Run posted deadline.
1106   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
1107   scheduler->DidSwapBuffers();
1108
1109   // Spin the event loop a few times and make sure we get more
1110   // DidAnticipateDrawTimeChange calls every time.
1111   int actions_so_far = client.num_actions_();
1112
1113   // Does three iterations to make sure that the timer is properly repeating.
1114   for (int i = 0; i < 3; ++i) {
1115     EXPECT_EQ((frame_args.interval * 2).InMicroseconds(),
1116               client.task_runner().NextPendingTaskDelay().InMicroseconds())
1117         << *scheduler->StateAsValue();
1118     client.task_runner().RunPendingTasks();
1119     EXPECT_GT(client.num_actions_(), actions_so_far);
1120     EXPECT_STREQ(client.Action(client.num_actions_() - 1),
1121                  "DidAnticipatedDrawTimeChange");
1122     actions_so_far = client.num_actions_();
1123   }
1124
1125   // Do the same thing after BeginMainFrame starts but still before activation.
1126   scheduler->NotifyBeginMainFrameStarted();
1127   for (int i = 0; i < 3; ++i) {
1128     EXPECT_EQ((frame_args.interval * 2).InMicroseconds(),
1129               client.task_runner().NextPendingTaskDelay().InMicroseconds())
1130         << *scheduler->StateAsValue();
1131     client.task_runner().RunPendingTasks();
1132     EXPECT_GT(client.num_actions_(), actions_so_far);
1133     EXPECT_STREQ(client.Action(client.num_actions_() - 1),
1134                  "DidAnticipatedDrawTimeChange");
1135     actions_so_far = client.num_actions_();
1136   }
1137 }
1138
1139 TEST(SchedulerTest, BeginRetroFrame) {
1140   FakeSchedulerClient client;
1141   SchedulerSettings scheduler_settings;
1142   Scheduler* scheduler = client.CreateScheduler(scheduler_settings);
1143   scheduler->SetCanStart();
1144   scheduler->SetVisible(true);
1145   scheduler->SetCanDraw(true);
1146   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
1147
1148   // SetNeedsCommit should begin the frame on the next BeginImplFrame.
1149   client.Reset();
1150   scheduler->SetNeedsCommit();
1151   EXPECT_TRUE(client.needs_begin_frame());
1152   EXPECT_SINGLE_ACTION("SetNeedsBeginFrame", client);
1153   client.Reset();
1154
1155   // Create a BeginFrame with a long deadline to avoid race conditions.
1156   // This is the first BeginFrame, which will be handled immediately.
1157   BeginFrameArgs args = BeginFrameArgs::CreateForTesting();
1158   args.deadline += base::TimeDelta::FromHours(1);
1159   scheduler->BeginFrame(args);
1160   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
1161   EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client, 1, 2);
1162   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1163   EXPECT_TRUE(client.needs_begin_frame());
1164   client.Reset();
1165
1166   // Queue BeginFrames while we are still handling the previous BeginFrame.
1167   args.frame_time += base::TimeDelta::FromSeconds(1);
1168   scheduler->BeginFrame(args);
1169   args.frame_time += base::TimeDelta::FromSeconds(1);
1170   scheduler->BeginFrame(args);
1171
1172   // If we don't swap on the deadline, we wait for the next BeginImplFrame.
1173   client.task_runner().RunPendingTasks();  // Run posted deadline.
1174   EXPECT_EQ(0, client.num_actions_());
1175   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
1176   EXPECT_TRUE(client.needs_begin_frame());
1177   client.Reset();
1178
1179   // NotifyReadyToCommit should trigger the commit.
1180   scheduler->NotifyBeginMainFrameStarted();
1181   scheduler->NotifyReadyToCommit();
1182   EXPECT_SINGLE_ACTION("ScheduledActionCommit", client);
1183   EXPECT_TRUE(client.needs_begin_frame());
1184   client.Reset();
1185
1186   // BeginImplFrame should prepare the draw.
1187   client.task_runner().RunPendingTasks();  // Run posted BeginRetroFrame.
1188   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
1189   EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
1190   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1191   EXPECT_TRUE(client.needs_begin_frame());
1192   client.Reset();
1193
1194   // BeginImplFrame deadline should draw.
1195   client.task_runner().RunPendingTasks();  // Run posted deadline.
1196   EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client, 0, 1);
1197   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
1198   EXPECT_TRUE(client.needs_begin_frame());
1199   client.Reset();
1200
1201   // The following BeginImplFrame deadline should SetNeedsBeginFrame(false)
1202   // to avoid excessive toggles.
1203   client.task_runner().RunPendingTasks();  // Run posted BeginRetroFrame.
1204   EXPECT_SINGLE_ACTION("WillBeginImplFrame", client);
1205   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1206   client.Reset();
1207
1208   client.task_runner().RunPendingTasks();  // Run posted deadline.
1209   EXPECT_SINGLE_ACTION("SetNeedsBeginFrame", client);
1210   EXPECT_FALSE(client.needs_begin_frame());
1211   client.Reset();
1212 }
1213
1214 TEST(SchedulerTest, BeginRetroFrame_SwapThrottled) {
1215   FakeSchedulerClient client;
1216   SchedulerSettings scheduler_settings;
1217   Scheduler* scheduler = client.CreateScheduler(scheduler_settings);
1218   scheduler->SetCanStart();
1219   scheduler->SetVisible(true);
1220   scheduler->SetCanDraw(true);
1221   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
1222
1223   // To test swap ack throttling, this test disables automatic swap acks.
1224   scheduler->SetMaxSwapsPending(1);
1225   client.SetAutomaticSwapAck(false);
1226
1227   // SetNeedsCommit should begin the frame on the next BeginImplFrame.
1228   client.Reset();
1229   scheduler->SetNeedsCommit();
1230   EXPECT_TRUE(client.needs_begin_frame());
1231   EXPECT_SINGLE_ACTION("SetNeedsBeginFrame", client);
1232   client.Reset();
1233
1234   // Create a BeginFrame with a long deadline to avoid race conditions.
1235   // This is the first BeginFrame, which will be handled immediately.
1236   BeginFrameArgs args = BeginFrameArgs::CreateForTesting();
1237   args.deadline += base::TimeDelta::FromHours(1);
1238   scheduler->BeginFrame(args);
1239   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
1240   EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client, 1, 2);
1241   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1242   EXPECT_TRUE(client.needs_begin_frame());
1243   client.Reset();
1244
1245   // Queue BeginFrame while we are still handling the previous BeginFrame.
1246   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1247   args.frame_time += base::TimeDelta::FromSeconds(1);
1248   scheduler->BeginFrame(args);
1249   EXPECT_EQ(0, client.num_actions_());
1250   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1251   client.Reset();
1252
1253   // NotifyReadyToCommit should trigger the pending commit and draw.
1254   scheduler->NotifyBeginMainFrameStarted();
1255   scheduler->NotifyReadyToCommit();
1256   EXPECT_SINGLE_ACTION("ScheduledActionCommit", client);
1257   EXPECT_TRUE(client.needs_begin_frame());
1258   client.Reset();
1259
1260   // Swapping will put us into a swap throttled state.
1261   client.task_runner().RunPendingTasks();  // Run posted deadline.
1262   EXPECT_ACTION("ScheduledActionAnimate", client, 0, 2);
1263   EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client, 1, 2);
1264   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
1265   EXPECT_TRUE(client.needs_begin_frame());
1266   client.Reset();
1267
1268   // While swap throttled, BeginRetroFrames should trigger BeginImplFrames
1269   // but not a BeginMainFrame or draw.
1270   scheduler->SetNeedsCommit();
1271   client.task_runner().RunPendingTasks();  // Run posted BeginRetroFrame.
1272   EXPECT_ACTION("WillBeginImplFrame", client, 0, 1);
1273   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1274   EXPECT_TRUE(client.needs_begin_frame());
1275   client.Reset();
1276
1277   // Queue BeginFrame while we are still handling the previous BeginFrame.
1278   args.frame_time += base::TimeDelta::FromSeconds(1);
1279   scheduler->BeginFrame(args);
1280   EXPECT_EQ(0, client.num_actions_());
1281   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1282   EXPECT_TRUE(client.needs_begin_frame());
1283   client.Reset();
1284
1285   // Take us out of a swap throttled state.
1286   scheduler->DidSwapBuffersComplete();
1287   EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client, 0, 1);
1288   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1289   EXPECT_TRUE(client.needs_begin_frame());
1290   client.Reset();
1291
1292   // BeginImplFrame deadline should draw.
1293   scheduler->SetNeedsRedraw();
1294   client.task_runner().RunPendingTasks();  // Run posted deadline.
1295   EXPECT_ACTION("ScheduledActionAnimate", client, 0, 2);
1296   EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client, 1, 2);
1297   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
1298   EXPECT_TRUE(client.needs_begin_frame());
1299   client.Reset();
1300 }
1301
1302 void BeginFramesNotFromClient(bool begin_frame_scheduling_enabled,
1303                               bool throttle_frame_production) {
1304   FakeSchedulerClient client;
1305   SchedulerSettings scheduler_settings;
1306   scheduler_settings.begin_frame_scheduling_enabled =
1307       begin_frame_scheduling_enabled;
1308   scheduler_settings.throttle_frame_production = throttle_frame_production;
1309   Scheduler* scheduler = client.CreateScheduler(scheduler_settings);
1310   scheduler->SetCanStart();
1311   scheduler->SetVisible(true);
1312   scheduler->SetCanDraw(true);
1313   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
1314
1315   // SetNeedsCommit should begin the frame on the next BeginImplFrame
1316   // without calling SetNeedsBeginFrame.
1317   client.Reset();
1318   scheduler->SetNeedsCommit();
1319   EXPECT_FALSE(client.needs_begin_frame());
1320   EXPECT_EQ(0, client.num_actions_());
1321   client.Reset();
1322
1323   // When the client-driven BeginFrame are disabled, the scheduler posts it's
1324   // own BeginFrame tasks.
1325   client.task_runner().RunPendingTasks();  // Run posted BeginFrame.
1326   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
1327   EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client, 1, 2);
1328   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1329   EXPECT_FALSE(client.needs_begin_frame());
1330   client.Reset();
1331
1332   // If we don't swap on the deadline, we wait for the next BeginFrame.
1333   client.task_runner().RunPendingTasks();  // Run posted deadline.
1334   EXPECT_EQ(0, client.num_actions_());
1335   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
1336   EXPECT_FALSE(client.needs_begin_frame());
1337   client.Reset();
1338
1339   // NotifyReadyToCommit should trigger the commit.
1340   scheduler->NotifyBeginMainFrameStarted();
1341   scheduler->NotifyReadyToCommit();
1342   EXPECT_SINGLE_ACTION("ScheduledActionCommit", client);
1343   EXPECT_FALSE(client.needs_begin_frame());
1344   client.Reset();
1345
1346   // BeginImplFrame should prepare the draw.
1347   client.task_runner().RunPendingTasks();  // Run posted BeginFrame.
1348   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
1349   EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
1350   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1351   EXPECT_FALSE(client.needs_begin_frame());
1352   client.Reset();
1353
1354   // BeginImplFrame deadline should draw.
1355   client.task_runner().RunPendingTasks();  // Run posted deadline.
1356   EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client, 0, 1);
1357   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
1358   EXPECT_FALSE(client.needs_begin_frame());
1359   client.Reset();
1360
1361   // The following BeginImplFrame deadline should SetNeedsBeginFrame(false)
1362   // to avoid excessive toggles.
1363   client.task_runner().RunPendingTasks();  // Run posted BeginFrame.
1364   EXPECT_SINGLE_ACTION("WillBeginImplFrame", client);
1365   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1366   client.Reset();
1367
1368   // Make sure SetNeedsBeginFrame isn't called on the client
1369   // when the BeginFrame is no longer needed.
1370   client.task_runner().RunPendingTasks();  // Run posted deadline.
1371   EXPECT_EQ(0, client.num_actions_());
1372   EXPECT_FALSE(client.needs_begin_frame());
1373   client.Reset();
1374 }
1375
1376 TEST(SchedulerTest, SyntheticBeginFrames) {
1377   bool begin_frame_scheduling_enabled = false;
1378   bool throttle_frame_production = true;
1379   BeginFramesNotFromClient(begin_frame_scheduling_enabled,
1380                            throttle_frame_production);
1381 }
1382
1383 TEST(SchedulerTest, VSyncThrottlingDisabled) {
1384   bool begin_frame_scheduling_enabled = true;
1385   bool throttle_frame_production = false;
1386   BeginFramesNotFromClient(begin_frame_scheduling_enabled,
1387                            throttle_frame_production);
1388 }
1389
1390 TEST(SchedulerTest, SyntheticBeginFrames_And_VSyncThrottlingDisabled) {
1391   bool begin_frame_scheduling_enabled = false;
1392   bool throttle_frame_production = false;
1393   BeginFramesNotFromClient(begin_frame_scheduling_enabled,
1394                            throttle_frame_production);
1395 }
1396
1397 void BeginFramesNotFromClient_SwapThrottled(bool begin_frame_scheduling_enabled,
1398                                             bool throttle_frame_production) {
1399   FakeSchedulerClient client;
1400   SchedulerSettings scheduler_settings;
1401   scheduler_settings.begin_frame_scheduling_enabled =
1402       begin_frame_scheduling_enabled;
1403   scheduler_settings.throttle_frame_production = throttle_frame_production;
1404   Scheduler* scheduler = client.CreateScheduler(scheduler_settings);
1405   scheduler->SetCanStart();
1406   scheduler->SetVisible(true);
1407   scheduler->SetCanDraw(true);
1408   InitializeOutputSurfaceAndFirstCommit(scheduler, &client);
1409
1410   // To test swap ack throttling, this test disables automatic swap acks.
1411   scheduler->SetMaxSwapsPending(1);
1412   client.SetAutomaticSwapAck(false);
1413
1414   // SetNeedsCommit should begin the frame on the next BeginImplFrame.
1415   client.Reset();
1416   scheduler->SetNeedsCommit();
1417   EXPECT_FALSE(client.needs_begin_frame());
1418   EXPECT_EQ(0, client.num_actions_());
1419   client.Reset();
1420
1421   // Trigger the first BeginImplFrame and BeginMainFrame
1422   client.task_runner().RunPendingTasks();  // Run posted BeginFrame.
1423   EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
1424   EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client, 1, 2);
1425   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1426   EXPECT_FALSE(client.needs_begin_frame());
1427   client.Reset();
1428
1429   // NotifyReadyToCommit should trigger the pending commit and draw.
1430   scheduler->NotifyBeginMainFrameStarted();
1431   scheduler->NotifyReadyToCommit();
1432   EXPECT_SINGLE_ACTION("ScheduledActionCommit", client);
1433   EXPECT_FALSE(client.needs_begin_frame());
1434   client.Reset();
1435
1436   // Swapping will put us into a swap throttled state.
1437   client.task_runner().RunPendingTasks();  // Run posted deadline.
1438   EXPECT_ACTION("ScheduledActionAnimate", client, 0, 2);
1439   EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client, 1, 2);
1440   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
1441   EXPECT_FALSE(client.needs_begin_frame());
1442   client.Reset();
1443
1444   // While swap throttled, BeginFrames should trigger BeginImplFrames,
1445   // but not a BeginMainFrame or draw.
1446   scheduler->SetNeedsCommit();
1447   client.task_runner().RunPendingTasks();  // Run posted BeginFrame.
1448   EXPECT_ACTION("WillBeginImplFrame", client, 0, 1);
1449   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1450   EXPECT_FALSE(client.needs_begin_frame());
1451   client.Reset();
1452
1453   // Take us out of a swap throttled state.
1454   scheduler->DidSwapBuffersComplete();
1455   EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client, 0, 1);
1456   EXPECT_TRUE(scheduler->BeginImplFrameDeadlinePending());
1457   EXPECT_FALSE(client.needs_begin_frame());
1458   client.Reset();
1459
1460   // BeginImplFrame deadline should draw.
1461   scheduler->SetNeedsRedraw();
1462   client.task_runner().RunPendingTasks();  // Run posted deadline.
1463   EXPECT_ACTION("ScheduledActionAnimate", client, 0, 2);
1464   EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client, 1, 2);
1465   EXPECT_FALSE(scheduler->BeginImplFrameDeadlinePending());
1466   EXPECT_FALSE(client.needs_begin_frame());
1467   client.Reset();
1468 }
1469
1470 TEST(SchedulerTest, SyntheticBeginFrames_SwapThrottled) {
1471   bool begin_frame_scheduling_enabled = false;
1472   bool throttle_frame_production = true;
1473   BeginFramesNotFromClient_SwapThrottled(begin_frame_scheduling_enabled,
1474                                          throttle_frame_production);
1475 }
1476
1477 TEST(SchedulerTest, VSyncThrottlingDisabled_SwapThrottled) {
1478   bool begin_frame_scheduling_enabled = true;
1479   bool throttle_frame_production = false;
1480   BeginFramesNotFromClient_SwapThrottled(begin_frame_scheduling_enabled,
1481                                          throttle_frame_production);
1482 }
1483
1484 TEST(SchedulerTest,
1485      SyntheticBeginFrames_And_VSyncThrottlingDisabled_SwapThrottled) {
1486   bool begin_frame_scheduling_enabled = false;
1487   bool throttle_frame_production = false;
1488   BeginFramesNotFromClient_SwapThrottled(begin_frame_scheduling_enabled,
1489                                          throttle_frame_production);
1490 }
1491
1492 }  // namespace
1493 }  // namespace cc