mojo/services/view_manager/animation_runner_unittest.cc

   1 // Copyright 2014 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
   5 #include "mojo/services/view_manager/animation_runner.h"
   6
   7 #include "base/strings/stringprintf.h"
   8 #include "mojo/converters/geometry/geometry_type_converters.h"
   9 #include "mojo/converters/transform/transform_type_converters.h"
  10 #include "mojo/services/view_manager/animation_runner_observer.h"
  11 #include "mojo/services/view_manager/scheduled_animation_group.h"
  12 #include "mojo/services/view_manager/server_view.h"
  13 #include "mojo/services/view_manager/test_server_view_delegate.h"
  14 #include "testing/gtest/include/gtest/gtest.h"
  15 #include "third_party/mojo_services/src/view_manager/public/interfaces/view_manager_constants.mojom.h"
  16
  17 using base::TimeDelta;
  18 using mojo::ANIMATION_PROPERTY_NONE;
  19 using mojo::ANIMATION_PROPERTY_OPACITY;
  20 using mojo::ANIMATION_PROPERTY_TRANSFORM;
  21 using mojo::ANIMATION_TWEEN_TYPE_LINEAR;
  22 using mojo::AnimationElement;
  23 using mojo::AnimationGroup;
  24 using mojo::AnimationProperty;
  25 using mojo::AnimationSequence;
  26 using mojo::AnimationTweenType;
  27 using mojo::AnimationValue;
  28 using mojo::AnimationValuePtr;
  29 using mojo::Transform;
  30
  31 namespace view_manager {
  32 namespace {
  33
  34 class TestAnimationRunnerObserver : public AnimationRunnerObserver {
  35  public:
  36   TestAnimationRunnerObserver() {}
  37   ~TestAnimationRunnerObserver() override {}
  38
  39   std::vector<std::string>* changes() { return &changes_; }
  40   std::vector<uint32_t>* change_ids() { return &change_ids_; }
  41
  42   void clear_changes() {
  43     changes_.clear();
  44     change_ids_.clear();
  45   }
  46
  47   // AnimationRunnerDelgate:
  48   void OnAnimationScheduled(uint32_t id) override {
  49     change_ids_.push_back(id);
  50     changes_.push_back("scheduled");
  51   }
  52   void OnAnimationDone(uint32_t id) override {
  53     change_ids_.push_back(id);
  54     changes_.push_back("done");
  55   }
  56   void OnAnimationInterrupted(uint32_t id) override {
  57     change_ids_.push_back(id);
  58     changes_.push_back("interrupted");
  59   }
  60   void OnAnimationCanceled(uint32_t id) override {
  61     change_ids_.push_back(id);
  62     changes_.push_back("canceled");
  63   }
  64
  65  private:
  66   std::vector<uint32_t> change_ids_;
  67   std::vector<std::string> changes_;
  68
  69   DISALLOW_COPY_AND_ASSIGN(TestAnimationRunnerObserver);
  70 };
  71
  72 // Creates an AnimationValuePtr from the specified float value.
  73 AnimationValuePtr FloatAnimationValue(float float_value) {
  74   AnimationValuePtr value(AnimationValue::New());
  75   value->float_value = float_value;
  76   return value.Pass();
  77 }
  78
  79 // Creates an AnimationValuePtr from the specified transform.
  80 AnimationValuePtr TransformAnimationValue(const gfx::Transform& transform) {
  81   AnimationValuePtr value(AnimationValue::New());
  82   value->transform = Transform::From(transform);
  83   return value.Pass();
  84 }
  85
  86 // Adds an AnimationElement to |group|s last sequence with the specified value.
  87 void AddElement(AnimationGroup* group,
  88                 TimeDelta time,
  89                 AnimationValuePtr start_value,
  90                 AnimationValuePtr target_value,
  91                 AnimationProperty property,
  92                 AnimationTweenType tween_type) {
  93   AnimationSequence& sequence =
  94       *(group->sequences[group->sequences.size() - 1]);
  95   sequence.elements.push_back(AnimationElement::New());
  96   AnimationElement& element =
  97       *(sequence.elements[sequence.elements.size() - 1]);
  98   element.property = property;
  99   element.duration = time.InMicroseconds();
 100   element.tween_type = tween_type;
 101   element.start_value = start_value.Pass();
 102   element.target_value = target_value.Pass();
 103 }
 104
 105 void AddOpacityElement(AnimationGroup* group,
 106                        TimeDelta time,
 107                        AnimationValuePtr start_value,
 108                        AnimationValuePtr target_value) {
 109   AddElement(group, time, start_value.Pass(), target_value.Pass(),
 110              ANIMATION_PROPERTY_OPACITY, ANIMATION_TWEEN_TYPE_LINEAR);
 111 }
 112
 113 void AddTransformElement(AnimationGroup* group,
 114                          TimeDelta time,
 115                          AnimationValuePtr start_value,
 116                          AnimationValuePtr target_value) {
 117   AddElement(group, time, start_value.Pass(), target_value.Pass(),
 118              ANIMATION_PROPERTY_TRANSFORM, ANIMATION_TWEEN_TYPE_LINEAR);
 119 }
 120
 121 void AddPauseElement(AnimationGroup* group, TimeDelta time) {
 122   AddElement(group, time, AnimationValuePtr(), AnimationValuePtr(),
 123              ANIMATION_PROPERTY_NONE, ANIMATION_TWEEN_TYPE_LINEAR);
 124 }
 125
 126 void InitGroupForView(AnimationGroup* group,
 127                       const ViewId& id,
 128                       int cycle_count) {
 129   group->view_id = ViewIdToTransportId(id);
 130   group->sequences.push_back(AnimationSequence::New());
 131   group->sequences[group->sequences.size() - 1]->cycle_count = cycle_count;
 132 }
 133
 134 }  // namespace
 135
 136 class AnimationRunnerTest : public testing::Test {
 137  public:
 138   AnimationRunnerTest()
 139       : initial_time_(base::TimeTicks::Now()), runner_(initial_time_) {
 140     runner_.AddObserver(&runner_observer_);
 141   }
 142   ~AnimationRunnerTest() override { runner_.RemoveObserver(&runner_observer_); }
 143
 144  protected:
 145   // Convenience to schedule an animation for a single view/group pair.
 146   AnimationRunner::AnimationId ScheduleForSingleView(
 147       ServerView* view,
 148       const AnimationGroup* group,
 149       base::TimeTicks now) {
 150     std::vector<AnimationRunner::ViewAndAnimationPair> pairs;
 151     pairs.push_back(std::make_pair(view, group));
 152     return runner_.Schedule(pairs, now);
 153   }
 154
 155   // If |id| is valid and there is only one view schedule against the animation
 156   // it is returned; otherwise returns null.
 157   ServerView* GetSingleViewAnimating(AnimationRunner::AnimationId id) {
 158     std::set<ServerView*> views(runner_.GetViewsAnimating(id));
 159     return views.size() == 1 ? *views.begin() : nullptr;
 160   }
 161
 162   const base::TimeTicks initial_time_;
 163   TestAnimationRunnerObserver runner_observer_;
 164   AnimationRunner runner_;
 165
 166  private:
 167   DISALLOW_COPY_AND_ASSIGN(AnimationRunnerTest);
 168 };
 169
 170 // Opacity from 1 to .5 over 1000.
 171 TEST_F(AnimationRunnerTest, SingleProperty) {
 172   TestServerViewDelegate view_delegate;
 173   ServerView view(&view_delegate, ViewId());
 174
 175   AnimationGroup group;
 176   InitGroupForView(&group, view.id(), 1);
 177   AddOpacityElement(&group, TimeDelta::FromMicroseconds(1000),
 178                     AnimationValuePtr(), FloatAnimationValue(.5));
 179
 180   const uint32_t animation_id =
 181       ScheduleForSingleView(&view, &group, initial_time_);
 182
 183   ASSERT_EQ(1u, runner_observer_.changes()->size());
 184   EXPECT_EQ("scheduled", runner_observer_.changes()->at(0));
 185   EXPECT_EQ(animation_id, runner_observer_.change_ids()->at(0));
 186   runner_observer_.clear_changes();
 187
 188   EXPECT_TRUE(runner_.HasAnimations());
 189
 190   // Opacity should still be 1 (the initial value).
 191   EXPECT_EQ(1.f, view.opacity());
 192
 193   // Animate half way.
 194   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(500));
 195
 196   EXPECT_EQ(.75f, view.opacity());
 197   EXPECT_TRUE(runner_observer_.changes()->empty());
 198
 199   // Run well past the end. Value should progress to end and delegate should
 200   // be notified.
 201   runner_.Tick(initial_time_ + TimeDelta::FromSeconds(10));
 202   EXPECT_EQ(.5f, view.opacity());
 203
 204   ASSERT_EQ(1u, runner_observer_.changes()->size());
 205   EXPECT_EQ("done", runner_observer_.changes()->at(0));
 206   EXPECT_EQ(animation_id, runner_observer_.change_ids()->at(0));
 207
 208   EXPECT_FALSE(runner_.HasAnimations());
 209 }
 210
 211 // Opacity from 1 to .5, followed by transform from identity to 2x,3x.
 212 TEST_F(AnimationRunnerTest, TwoPropertiesInSequence) {
 213   TestServerViewDelegate view_delegate;
 214   ServerView view(&view_delegate, ViewId());
 215
 216   AnimationGroup group;
 217   InitGroupForView(&group, view.id(), 1);
 218   AddOpacityElement(&group, TimeDelta::FromMicroseconds(1000),
 219                     AnimationValuePtr(), FloatAnimationValue(.5f));
 220
 221   gfx::Transform done_transform;
 222   done_transform.Scale(2, 4);
 223   AddTransformElement(&group, TimeDelta::FromMicroseconds(2000),
 224                       AnimationValuePtr(),
 225                       TransformAnimationValue(done_transform));
 226
 227   const uint32_t animation_id =
 228       ScheduleForSingleView(&view, &group, initial_time_);
 229   runner_observer_.clear_changes();
 230
 231   // Nothing in the view should have changed yet.
 232   EXPECT_EQ(1.f, view.opacity());
 233   EXPECT_TRUE(view.transform().IsIdentity());
 234
 235   // Animate half way from through opacity animation.
 236   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(500));
 237
 238   EXPECT_EQ(.75f, view.opacity());
 239   EXPECT_TRUE(view.transform().IsIdentity());
 240
 241   // Finish first element (opacity).
 242   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(1000));
 243   EXPECT_EQ(.5f, view.opacity());
 244   EXPECT_TRUE(view.transform().IsIdentity());
 245
 246   // Half way through second (transform).
 247   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(2000));
 248   EXPECT_EQ(.5f, view.opacity());
 249   gfx::Transform half_way_transform;
 250   half_way_transform.Scale(1.5, 2.5);
 251   EXPECT_EQ(half_way_transform, view.transform());
 252
 253   EXPECT_TRUE(runner_observer_.changes()->empty());
 254
 255   // To end.
 256   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(3500));
 257   EXPECT_EQ(.5f, view.opacity());
 258   EXPECT_EQ(done_transform, view.transform());
 259
 260   ASSERT_EQ(1u, runner_observer_.changes()->size());
 261   EXPECT_EQ("done", runner_observer_.changes()->at(0));
 262   EXPECT_EQ(animation_id, runner_observer_.change_ids()->at(0));
 263 }
 264
 265 // Opacity from .5 to 1 over 1000, transform to 2x,4x over 500.
 266 TEST_F(AnimationRunnerTest, TwoPropertiesInParallel) {
 267   TestServerViewDelegate view_delegate;
 268   ServerView view(&view_delegate, ViewId(1, 1));
 269
 270   AnimationGroup group;
 271   InitGroupForView(&group, view.id(), 1);
 272   AddOpacityElement(&group, TimeDelta::FromMicroseconds(1000),
 273                     FloatAnimationValue(.5f), FloatAnimationValue(1));
 274
 275   group.sequences.push_back(AnimationSequence::New());
 276   group.sequences[1]->cycle_count = 1;
 277   gfx::Transform done_transform;
 278   done_transform.Scale(2, 4);
 279   AddTransformElement(&group, TimeDelta::FromMicroseconds(500),
 280                       AnimationValuePtr(),
 281                       TransformAnimationValue(done_transform));
 282
 283   const uint32_t animation_id =
 284       ScheduleForSingleView(&view, &group, initial_time_);
 285
 286   runner_observer_.clear_changes();
 287
 288   // Nothing in the view should have changed yet.
 289   EXPECT_EQ(1.f, view.opacity());
 290   EXPECT_TRUE(view.transform().IsIdentity());
 291
 292   // Animate to 250, which is 1/4 way through opacity and half way through
 293   // transform.
 294   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(250));
 295
 296   EXPECT_EQ(.625f, view.opacity());
 297   gfx::Transform half_way_transform;
 298   half_way_transform.Scale(1.5, 2.5);
 299   EXPECT_EQ(half_way_transform, view.transform());
 300
 301   // Animate to 500, which is 1/2 way through opacity and transform done.
 302   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(500));
 303   EXPECT_EQ(.75f, view.opacity());
 304   EXPECT_EQ(done_transform, view.transform());
 305
 306   // Animate to 750, which is 3/4 way through opacity and transform done.
 307   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(750));
 308   EXPECT_EQ(.875f, view.opacity());
 309   EXPECT_EQ(done_transform, view.transform());
 310
 311   EXPECT_TRUE(runner_observer_.changes()->empty());
 312
 313   // To end.
 314   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(3500));
 315   EXPECT_EQ(1.f, view.opacity());
 316   EXPECT_EQ(done_transform, view.transform());
 317
 318   ASSERT_EQ(1u, runner_observer_.changes()->size());
 319   EXPECT_EQ("done", runner_observer_.changes()->at(0));
 320   EXPECT_EQ(animation_id, runner_observer_.change_ids()->at(0));
 321 }
 322
 323 // Opacity from .5 to 1 over 1000, pause for 500, 1 to .5 over 500, with a cycle
 324 // count of 3.
 325 TEST_F(AnimationRunnerTest, Cycles) {
 326   TestServerViewDelegate view_delegate;
 327   ServerView view(&view_delegate, ViewId(1, 2));
 328
 329   view.SetOpacity(.5f);
 330
 331   AnimationGroup group;
 332   InitGroupForView(&group, view.id(), 3);
 333   AddOpacityElement(&group, TimeDelta::FromMicroseconds(1000),
 334                     AnimationValuePtr(), FloatAnimationValue(1));
 335   AddPauseElement(&group, TimeDelta::FromMicroseconds(500));
 336   AddOpacityElement(&group, TimeDelta::FromMicroseconds(500),
 337                     AnimationValuePtr(), FloatAnimationValue(.5));
 338
 339   ScheduleForSingleView(&view, &group, initial_time_);
 340   runner_observer_.clear_changes();
 341
 342   // Nothing in the view should have changed yet.
 343   EXPECT_EQ(.5f, view.opacity());
 344
 345   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(500));
 346   EXPECT_EQ(.75f, view.opacity());
 347
 348   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(1250));
 349   EXPECT_EQ(1.f, view.opacity());
 350
 351   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(1750));
 352   EXPECT_EQ(.75f, view.opacity());
 353
 354   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(2500));
 355   EXPECT_EQ(.75f, view.opacity());
 356
 357   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(3250));
 358   EXPECT_EQ(1.f, view.opacity());
 359
 360   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(3750));
 361   EXPECT_EQ(.75f, view.opacity());
 362
 363   // Animate to the end.
 364   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(6500));
 365   EXPECT_EQ(.5f, view.opacity());
 366
 367   ASSERT_EQ(1u, runner_observer_.changes()->size());
 368   EXPECT_EQ("done", runner_observer_.changes()->at(0));
 369 }
 370
 371 // Verifies scheduling the same view twice sends an interrupt.
 372 TEST_F(AnimationRunnerTest, ScheduleTwice) {
 373   TestServerViewDelegate view_delegate;
 374   ServerView view(&view_delegate, ViewId(1, 2));
 375
 376   AnimationGroup group;
 377   InitGroupForView(&group, view.id(), 1);
 378   AddOpacityElement(&group, TimeDelta::FromMicroseconds(1000),
 379                     AnimationValuePtr(), FloatAnimationValue(.5));
 380
 381   const uint32_t animation_id =
 382       ScheduleForSingleView(&view, &group, initial_time_);
 383   runner_observer_.clear_changes();
 384
 385   // Animate half way.
 386   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(500));
 387
 388   EXPECT_EQ(.75f, view.opacity());
 389   EXPECT_TRUE(runner_observer_.changes()->empty());
 390
 391   // Schedule again. We should get an interrupt, but opacity shouldn't change.
 392   const uint32_t animation2_id = ScheduleForSingleView(
 393       &view, &group, initial_time_ + TimeDelta::FromMicroseconds(500));
 394
 395   // Id should have changed.
 396   EXPECT_NE(animation_id, animation2_id);
 397
 398   EXPECT_FALSE(runner_.IsAnimating(animation_id));
 399   EXPECT_EQ(&view, GetSingleViewAnimating(animation2_id));
 400
 401   EXPECT_EQ(.75f, view.opacity());
 402   EXPECT_EQ(2u, runner_observer_.changes()->size());
 403   EXPECT_EQ("interrupted", runner_observer_.changes()->at(0));
 404   EXPECT_EQ(animation_id, runner_observer_.change_ids()->at(0));
 405   EXPECT_EQ("scheduled", runner_observer_.changes()->at(1));
 406   EXPECT_EQ(animation2_id, runner_observer_.change_ids()->at(1));
 407   runner_observer_.clear_changes();
 408
 409   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(1000));
 410   EXPECT_EQ(.625f, view.opacity());
 411   EXPECT_TRUE(runner_observer_.changes()->empty());
 412
 413   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(2000));
 414   EXPECT_EQ(.5f, view.opacity());
 415   EXPECT_EQ(1u, runner_observer_.changes()->size());
 416   EXPECT_EQ("done", runner_observer_.changes()->at(0));
 417   EXPECT_EQ(animation2_id, runner_observer_.change_ids()->at(0));
 418 }
 419
 420 // Verifies Remove() works.
 421 TEST_F(AnimationRunnerTest, CancelAnimationForView) {
 422   // Create an animation and advance it part way.
 423   TestServerViewDelegate view_delegate;
 424   ServerView view(&view_delegate, ViewId());
 425   AnimationGroup group;
 426   InitGroupForView(&group, view.id(), 1);
 427   AddOpacityElement(&group, TimeDelta::FromMicroseconds(1000),
 428                     AnimationValuePtr(), FloatAnimationValue(.5));
 429
 430   const uint32_t animation_id =
 431       ScheduleForSingleView(&view, &group, initial_time_);
 432   runner_observer_.clear_changes();
 433   EXPECT_EQ(&view, GetSingleViewAnimating(animation_id));
 434
 435   EXPECT_TRUE(runner_.HasAnimations());
 436
 437   // Animate half way.
 438   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(500));
 439   EXPECT_EQ(.75f, view.opacity());
 440   EXPECT_TRUE(runner_observer_.changes()->empty());
 441
 442   // Cancel the animation.
 443   runner_.CancelAnimationForView(&view);
 444
 445   EXPECT_FALSE(runner_.HasAnimations());
 446   EXPECT_EQ(nullptr, GetSingleViewAnimating(animation_id));
 447
 448   EXPECT_EQ(.75f, view.opacity());
 449
 450   EXPECT_EQ(1u, runner_observer_.changes()->size());
 451   EXPECT_EQ("canceled", runner_observer_.changes()->at(0));
 452   EXPECT_EQ(animation_id, runner_observer_.change_ids()->at(0));
 453 }
 454
 455 // Verifies a tick with a very large delta and a sequence that repeats forever
 456 // doesn't take a long time.
 457 TEST_F(AnimationRunnerTest, InfiniteRepeatWithHugeGap) {
 458   TestServerViewDelegate view_delegate;
 459   ServerView view(&view_delegate, ViewId(1, 2));
 460
 461   view.SetOpacity(.5f);
 462
 463   AnimationGroup group;
 464   InitGroupForView(&group, view.id(), 0);
 465   AddOpacityElement(&group, TimeDelta::FromMicroseconds(500),
 466                     AnimationValuePtr(), FloatAnimationValue(1));
 467   AddOpacityElement(&group, TimeDelta::FromMicroseconds(500),
 468                     AnimationValuePtr(), FloatAnimationValue(.5));
 469
 470   ScheduleForSingleView(&view, &group, initial_time_);
 471   runner_observer_.clear_changes();
 472
 473   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(1000000000750));
 474
 475   EXPECT_EQ(.75f, view.opacity());
 476
 477   ASSERT_EQ(0u, runner_observer_.changes()->size());
 478 }
 479
 480 // Verifies a second schedule sets any properties that are no longer animating
 481 // to their final value.
 482 TEST_F(AnimationRunnerTest, RescheduleSetsPropertiesToFinalValue) {
 483   TestServerViewDelegate view_delegate;
 484   ServerView view(&view_delegate, ViewId());
 485
 486   AnimationGroup group;
 487   InitGroupForView(&group, view.id(), 1);
 488   AddOpacityElement(&group, TimeDelta::FromMicroseconds(1000),
 489                     AnimationValuePtr(), FloatAnimationValue(.5));
 490
 491   gfx::Transform done_transform;
 492   done_transform.Scale(2, 4);
 493   AddTransformElement(&group, TimeDelta::FromMicroseconds(500),
 494                       AnimationValuePtr(),
 495                       TransformAnimationValue(done_transform));
 496
 497   ScheduleForSingleView(&view, &group, initial_time_);
 498
 499   // Schedule() again, this time without animating opacity.
 500   group.sequences[0]->elements[0]->property = ANIMATION_PROPERTY_NONE;
 501   ScheduleForSingleView(&view, &group, initial_time_);
 502
 503   // Opacity should go to final value.
 504   EXPECT_EQ(.5f, view.opacity());
 505   // Transform shouldn't have changed since newly scheduled animation also has
 506   // transform in it.
 507   EXPECT_TRUE(view.transform().IsIdentity());
 508 }
 509
 510 // Opacity from 1 to .5 over 1000 of v1 and v2 transform to 2x,4x over 500.
 511 TEST_F(AnimationRunnerTest, TwoViews) {
 512   TestServerViewDelegate view_delegate;
 513   ServerView view1(&view_delegate, ViewId());
 514   ServerView view2(&view_delegate, ViewId(1, 2));
 515
 516   AnimationGroup group1;
 517   InitGroupForView(&group1, view1.id(), 1);
 518   AddOpacityElement(&group1, TimeDelta::FromMicroseconds(1000),
 519                     AnimationValuePtr(), FloatAnimationValue(.5));
 520
 521   AnimationGroup group2;
 522   InitGroupForView(&group2, view2.id(), 1);
 523   gfx::Transform done_transform;
 524   done_transform.Scale(2, 4);
 525   AddTransformElement(&group2, TimeDelta::FromMicroseconds(500),
 526                       AnimationValuePtr(),
 527                       TransformAnimationValue(done_transform));
 528
 529   std::vector<AnimationRunner::ViewAndAnimationPair> pairs;
 530   pairs.push_back(std::make_pair(&view1, &group1));
 531   pairs.push_back(std::make_pair(&view2, &group2));
 532
 533   const uint32_t animation_id = runner_.Schedule(pairs, initial_time_);
 534
 535   ASSERT_EQ(1u, runner_observer_.changes()->size());
 536   EXPECT_EQ("scheduled", runner_observer_.changes()->at(0));
 537   EXPECT_EQ(animation_id, runner_observer_.change_ids()->at(0));
 538   runner_observer_.clear_changes();
 539
 540   EXPECT_TRUE(runner_.HasAnimations());
 541   EXPECT_TRUE(runner_.IsAnimating(animation_id));
 542
 543   // Properties should be at the initial value.
 544   EXPECT_EQ(1.f, view1.opacity());
 545   EXPECT_TRUE(view2.transform().IsIdentity());
 546
 547   // Animate 250ms in, which is quarter way for opacity and half way for
 548   // transform.
 549   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(250));
 550   EXPECT_EQ(.875f, view1.opacity());
 551   gfx::Transform half_way_transform;
 552   half_way_transform.Scale(1.5, 2.5);
 553   EXPECT_EQ(half_way_transform, view2.transform());
 554   std::set<ServerView*> views_animating(
 555       runner_.GetViewsAnimating(animation_id));
 556   EXPECT_EQ(2u, views_animating.size());
 557   EXPECT_EQ(1u, views_animating.count(&view1));
 558   EXPECT_EQ(1u, views_animating.count(&view2));
 559
 560   // Animate 750ms in, view1 should be done 3/4 done, and view2 done.
 561   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(750));
 562   EXPECT_EQ(.625, view1.opacity());
 563   EXPECT_EQ(done_transform, view2.transform());
 564   views_animating = runner_.GetViewsAnimating(animation_id);
 565   EXPECT_EQ(1u, views_animating.size());
 566   EXPECT_EQ(1u, views_animating.count(&view1));
 567   EXPECT_TRUE(runner_.HasAnimations());
 568   EXPECT_TRUE(runner_.IsAnimating(animation_id));
 569
 570   // Animate to end.
 571   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(1750));
 572   EXPECT_EQ(.5, view1.opacity());
 573   EXPECT_EQ(done_transform, view2.transform());
 574   views_animating = runner_.GetViewsAnimating(animation_id);
 575   EXPECT_TRUE(views_animating.empty());
 576   EXPECT_FALSE(runner_.HasAnimations());
 577   EXPECT_FALSE(runner_.IsAnimating(animation_id));
 578 }
 579
 580 TEST_F(AnimationRunnerTest, Reschedule) {
 581   TestServerViewDelegate view_delegate;
 582   ServerView view(&view_delegate, ViewId());
 583
 584   // Animation from 1-0 over 1ms and in parallel transform to 2x,4x over 1ms.
 585   AnimationGroup group;
 586   InitGroupForView(&group, view.id(), 1);
 587   AddOpacityElement(&group, TimeDelta::FromMicroseconds(1000),
 588                     AnimationValuePtr(), FloatAnimationValue(0));
 589   group.sequences.push_back(AnimationSequence::New());
 590   group.sequences[1]->cycle_count = 1;
 591   gfx::Transform done_transform;
 592   done_transform.Scale(2, 4);
 593   AddTransformElement(&group, TimeDelta::FromMicroseconds(1000),
 594                       AnimationValuePtr(),
 595                       TransformAnimationValue(done_transform));
 596   const uint32_t animation_id1 =
 597       ScheduleForSingleView(&view, &group, initial_time_);
 598
 599   // Animate half way in.
 600   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(500));
 601   EXPECT_EQ(.5f, view.opacity());
 602   gfx::Transform half_way_transform;
 603   half_way_transform.Scale(1.5, 2.5);
 604   EXPECT_EQ(half_way_transform, view.transform());
 605
 606   runner_observer_.clear_changes();
 607
 608   // Schedule the same view animating opacity to 1.
 609   AnimationGroup group2;
 610   InitGroupForView(&group2, view.id(), 1);
 611   AddOpacityElement(&group2, TimeDelta::FromMicroseconds(1000),
 612                     AnimationValuePtr(), FloatAnimationValue(1));
 613   const uint32_t animation_id2 = ScheduleForSingleView(
 614       &view, &group2, initial_time_ + TimeDelta::FromMicroseconds(500));
 615
 616   // Opacity should remain at .5, but transform should go to end state.
 617   EXPECT_EQ(.5f, view.opacity());
 618   EXPECT_EQ(done_transform, view.transform());
 619
 620   ASSERT_EQ(2u, runner_observer_.changes()->size());
 621   EXPECT_EQ("interrupted", runner_observer_.changes()->at(0));
 622   EXPECT_EQ(animation_id1, runner_observer_.change_ids()->at(0));
 623   EXPECT_EQ("scheduled", runner_observer_.changes()->at(1));
 624   EXPECT_EQ(animation_id2, runner_observer_.change_ids()->at(1));
 625   runner_observer_.clear_changes();
 626
 627   // Animate half way through new sequence. Opacity should be the only thing
 628   // changing.
 629   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(1000));
 630   EXPECT_EQ(.75f, view.opacity());
 631   EXPECT_EQ(done_transform, view.transform());
 632   ASSERT_EQ(0u, runner_observer_.changes()->size());
 633
 634   // Animate to end.
 635   runner_.Tick(initial_time_ + TimeDelta::FromMicroseconds(2000));
 636   ASSERT_EQ(1u, runner_observer_.changes()->size());
 637   EXPECT_EQ("done", runner_observer_.changes()->at(0));
 638   EXPECT_EQ(animation_id2, runner_observer_.change_ids()->at(0));
 639 }
 640
 641 }  // namespace view_manager