Reland: Update DisplayConfigurator to use the asynchronous tasks

ui/display/chromeos/display_configurator_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/display/chromeos/display_configurator.h"
 
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/display/chromeos/test/action_logger_util.h"
@@ skipping 165 matching lines @@
     }
   }
 
   // Initializes |configurator_| with a single internal display.
   void InitWithSingleOutput() {
     UpdateOutputs(1, false);
     EXPECT_EQ(kNoActions, log_->GetActionsAndClear());
     configurator_.Init(false);
     EXPECT_EQ(kNoActions, log_->GetActionsAndClear());
     configurator_.ForceInitialConfigure(0);
-    EXPECT_EQ(
-        JoinActions(
-            kGrab,
-            kInitXRandR,
-            GetFramebufferAction(small_mode_.size(), &outputs_[0], NULL)
-                .c_str(),
-            GetCrtcAction(outputs_[0], &small_mode_, gfx::Point(0, 0)).c_str(),
-            kForceDPMS,
-            kUngrab,
-            NULL),
-        log_->GetActionsAndClear());
+    EXPECT_EQ(JoinActions(kInitXRandR, kGrab,
+                          GetFramebufferAction(small_mode_.size(), &outputs_[0],
+                                               NULL).c_str(),
+                          GetCrtcAction(outputs_[0], &small_mode_,
+                                        gfx::Point(0, 0)).c_str(),
+                          kForceDPMS, kUngrab, NULL),
+              log_->GetActionsAndClear());
   }
 
   base::MessageLoop message_loop_;
   TestStateController state_controller_;
   TestMirroringController mirroring_controller_;
   DisplayConfigurator configurator_;
   TestObserver observer_;
   scoped_ptr<ActionLogger> log_;
   TestNativeDisplayDelegate* native_display_delegate_;  // not owned
   DisplayConfigurator::TestApi test_api_;
@@ skipping 106 matching lines @@
                                    small_mode_.size().height() +
                                        DisplayConfigurator::kVerticalGap))
               .c_str(),
           kUngrab,
           NULL),
       log_->GetActionsAndClear());
   EXPECT_FALSE(mirroring_controller_.SoftwareMirroringEnabled());
   EXPECT_EQ(1, observer_.num_changes());
 
   observer_.Reset();
-  EXPECT_TRUE(configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR));
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   EXPECT_EQ(
       JoinActions(
           kGrab,
           GetFramebufferAction(small_mode_.size(), &outputs_[0], &outputs_[1])
               .c_str(),
           GetCrtcAction(outputs_[0], &small_mode_, gfx::Point(0, 0)).c_str(),
           GetCrtcAction(outputs_[1], &small_mode_, gfx::Point(0, 0)).c_str(),
           kUngrab,
           NULL),
       log_->GetActionsAndClear());
@@ skipping 30 matching lines @@
                         gfx::Point(0,
                                    small_mode_.size().height() +
                                        DisplayConfigurator::kVerticalGap))
               .c_str(),
           kUngrab,
           NULL),
       log_->GetActionsAndClear());
   EXPECT_FALSE(mirroring_controller_.SoftwareMirroringEnabled());
 
   observer_.Reset();
-  EXPECT_TRUE(configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR));
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   EXPECT_EQ(JoinActions(kGrab, kUngrab, NULL), log_->GetActionsAndClear());
   EXPECT_EQ(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED,
             configurator_.display_state());
   EXPECT_TRUE(mirroring_controller_.SoftwareMirroringEnabled());
   EXPECT_EQ(1, observer_.num_changes());
 
   // Setting MULTIPLE_DISPLAY_STATE_DUAL_MIRROR should try to reconfigure.
   observer_.Reset();
-  EXPECT_TRUE(
-      configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED));
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED);
   EXPECT_EQ(JoinActions(NULL), log_->GetActionsAndClear());
   EXPECT_FALSE(mirroring_controller_.SoftwareMirroringEnabled());
   EXPECT_EQ(1, observer_.num_changes());
 
   // Set back to software mirror mode.
   observer_.Reset();
-  EXPECT_TRUE(configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR));
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   EXPECT_EQ(JoinActions(kGrab, kUngrab, NULL), log_->GetActionsAndClear());
   EXPECT_EQ(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED,
             configurator_.display_state());
   EXPECT_TRUE(mirroring_controller_.SoftwareMirroringEnabled());
   EXPECT_EQ(1, observer_.num_changes());
 
   // Disconnect the second output.
   observer_.Reset();
   UpdateOutputs(1, true);
   EXPECT_EQ(
@@ skipping 289 matching lines @@
           NULL),
       log_->GetActionsAndClear());
 }
 
 TEST_F(DisplayConfiguratorTest, Headless) {
   UpdateOutputs(0, false);
   EXPECT_EQ(kNoActions, log_->GetActionsAndClear());
   configurator_.Init(false);
   EXPECT_EQ(kNoActions, log_->GetActionsAndClear());
   configurator_.ForceInitialConfigure(0);
-  EXPECT_EQ(JoinActions(kGrab, kInitXRandR, kForceDPMS, kUngrab, NULL),
+  EXPECT_EQ(JoinActions(kInitXRandR, kGrab, kForceDPMS, kUngrab, NULL),
             log_->GetActionsAndClear());
 
   // Not much should happen when the display power state is changed while
   // no displays are connected.
   configurator_.SetDisplayPower(chromeos::DISPLAY_POWER_ALL_OFF,
                                 DisplayConfigurator::kSetDisplayPowerNoFlags);
   EXPECT_EQ(JoinActions(kGrab, kUngrab, NULL), log_->GetActionsAndClear());
   configurator_.SetDisplayPower(chromeos::DISPLAY_POWER_ALL_ON,
                                 DisplayConfigurator::kSetDisplayPowerNoFlags);
   EXPECT_EQ(JoinActions(kGrab, kForceDPMS, kUngrab, NULL),
@@ skipping 19 matching lines @@
 TEST_F(DisplayConfiguratorTest, StartWithTwoOutputs) {
   UpdateOutputs(2, false);
   EXPECT_EQ(kNoActions, log_->GetActionsAndClear());
   configurator_.Init(false);
   EXPECT_EQ(kNoActions, log_->GetActionsAndClear());
 
   state_controller_.set_state(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   configurator_.ForceInitialConfigure(0);
   EXPECT_EQ(
       JoinActions(
-          kGrab,
-          kInitXRandR,
+          kInitXRandR, kGrab,
           GetFramebufferAction(small_mode_.size(), &outputs_[0], &outputs_[1])
               .c_str(),
           GetCrtcAction(outputs_[0], &small_mode_, gfx::Point(0, 0)).c_str(),
           GetCrtcAction(outputs_[1], &small_mode_, gfx::Point(0, 0)).c_str(),
-          kForceDPMS,
-          kUngrab,
-          NULL),
+          kForceDPMS, kUngrab, NULL),
       log_->GetActionsAndClear());
 }
 
 TEST_F(DisplayConfiguratorTest, InvalidMultipleDisplayStates) {
   UpdateOutputs(0, false);
   EXPECT_EQ(kNoActions, log_->GetActionsAndClear());
   configurator_.Init(false);
   configurator_.ForceInitialConfigure(0);
   observer_.Reset();
-  EXPECT_TRUE(configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_HEADLESS));
-  EXPECT_FALSE(configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_SINGLE));
-  EXPECT_FALSE(
-      configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR));
-  EXPECT_FALSE(
-      configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED));
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_HEADLESS);
+  EXPECT_EQ(1, observer_.num_changes());
+  EXPECT_EQ(0, observer_.num_failures());
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_SINGLE);
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED);
   EXPECT_EQ(1, observer_.num_changes());
   EXPECT_EQ(3, observer_.num_failures());
 
   UpdateOutputs(1, true);
   observer_.Reset();
-  EXPECT_FALSE(configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_HEADLESS));
-  EXPECT_TRUE(configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_SINGLE));
-  EXPECT_FALSE(
-      configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR));
-  EXPECT_FALSE(
-      configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED));
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_HEADLESS);
+  EXPECT_EQ(0, observer_.num_changes());
+  EXPECT_EQ(1, observer_.num_failures());
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_SINGLE);
+  EXPECT_EQ(1, observer_.num_changes());
+  EXPECT_EQ(1, observer_.num_failures());
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED);
   EXPECT_EQ(1, observer_.num_changes());
   EXPECT_EQ(3, observer_.num_failures());
 
   state_controller_.set_state(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED);
   UpdateOutputs(2, true);
   observer_.Reset();
-  EXPECT_FALSE(configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_HEADLESS));
-  EXPECT_FALSE(configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_SINGLE));
-  EXPECT_TRUE(configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR));
-  EXPECT_TRUE(
-      configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED));
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_HEADLESS);
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_SINGLE);
+  EXPECT_EQ(0, observer_.num_changes());
+  EXPECT_EQ(2, observer_.num_failures());
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
+  configurator_.SetDisplayMode(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED);
   EXPECT_EQ(2, observer_.num_changes());
   EXPECT_EQ(2, observer_.num_failures());
 }
 
 TEST_F(DisplayConfiguratorTest, GetMultipleDisplayStateForMirroredDisplays) {
   UpdateOutputs(2, false);
   configurator_.Init(false);
   state_controller_.set_state(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   configurator_.ForceInitialConfigure(0);
   EXPECT_EQ(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR, configurator_.display_state());
@@ skipping 29 matching lines @@
 
   // The small mode should be added to the internal output when requesting
   // mirrored mode.
   UpdateOutputs(2, false);
   state_controller_.set_state(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   configurator_.Init(true /* is_panel_fitting_enabled */);
   configurator_.ForceInitialConfigure(0);
   EXPECT_EQ(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR, configurator_.display_state());
   EXPECT_EQ(
       JoinActions(
-          kGrab,
-          kInitXRandR,
+          kInitXRandR, kGrab,
           GetAddOutputModeAction(outputs_[0], &small_mode_).c_str(),
           GetFramebufferAction(small_mode_.size(), &outputs_[0], &outputs_[1])
               .c_str(),
           GetCrtcAction(outputs_[0], &small_mode_, gfx::Point(0, 0)).c_str(),
           GetCrtcAction(outputs_[1], &small_mode_, gfx::Point(0, 0)).c_str(),
-          kForceDPMS,
-          kUngrab,
-          NULL),
+          kForceDPMS, kUngrab, NULL),
       log_->GetActionsAndClear());
 
   // Both outputs should be using the small mode.
   ASSERT_EQ(1, observer_.num_changes());
   ASSERT_EQ(static_cast<size_t>(2), observer_.latest_outputs().size());
   EXPECT_EQ(&small_mode_, observer_.latest_outputs()[0].mirror_mode);
   EXPECT_EQ(&small_mode_,
             observer_.latest_outputs()[0].display->current_mode());
   EXPECT_EQ(&small_mode_, observer_.latest_outputs()[1].mirror_mode);
   EXPECT_EQ(&small_mode_,
@@ skipping 171 matching lines @@
 
   // This test should attempt to configure a mirror mode that will not succeed
   // and should end up in extended mode.
   native_display_delegate_->set_max_configurable_pixels(
       modes[3]->size().GetArea());
   state_controller_.set_state(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   UpdateOutputs(2, true);
 
   EXPECT_EQ(
       JoinActions(
-          kGrab,
-          GetFramebufferAction(modes[0]->size(), &outputs_[0], &outputs_[1])
-              .c_str(),
+          kGrab, GetFramebufferAction(modes[0]->size(), &outputs_[0],
+                                      &outputs_[1]).c_str(),
           GetCrtcAction(outputs_[0], modes[0], gfx::Point(0, 0)).c_str(),
+          // Then attempt to configure crtc1 with the first mode.
+          GetCrtcAction(outputs_[1], modes[0], gfx::Point(0, 0)).c_str(),
           // First mode tried is expected to fail and it will
           // retry wil the 4th mode in the list.
           GetCrtcAction(outputs_[0], modes[3], gfx::Point(0, 0)).c_str(),
-          // Then attempt to configure crtc1 with the first mode.
-          GetCrtcAction(outputs_[1], modes[0], gfx::Point(0, 0)).c_str(),
           GetCrtcAction(outputs_[1], modes[3], gfx::Point(0, 0)).c_str(),
           // Since it was requested to go into mirror mode
           // and the configured modes were different, it
           // should now try and setup a valid configurable
           // extended mode.
           GetFramebufferAction(
               gfx::Size(modes[0]->size().width(),
                         modes[0]->size().height() + modes[0]->size().height() +
                             DisplayConfigurator::kVerticalGap),
-              &outputs_[0],
-              &outputs_[1]).c_str(),
+              &outputs_[0], &outputs_[1]).c_str(),
           GetCrtcAction(outputs_[0], modes[0], gfx::Point(0, 0)).c_str(),
+          GetCrtcAction(outputs_[1], modes[0],
+                        gfx::Point(0, modes[0]->size().height() +
+                                          DisplayConfigurator::kVerticalGap))
+              .c_str(),
           GetCrtcAction(outputs_[0], modes[3], gfx::Point(0, 0)).c_str(),
-          GetCrtcAction(outputs_[1],
-                        modes[0],
-                        gfx::Point(0,
-                                   modes[0]->size().height() +
-                                       DisplayConfigurator::kVerticalGap))
+          GetCrtcAction(outputs_[1], modes[3],
+                        gfx::Point(0, modes[0]->size().height() +
+                                          DisplayConfigurator::kVerticalGap))
               .c_str(),
-          GetCrtcAction(outputs_[1],
-                        modes[3],
-                        gfx::Point(0,
-                                   modes[0]->size().height() +
-                                       DisplayConfigurator::kVerticalGap))
-              .c_str(),
-          kUngrab,
-          NULL),
+          kUngrab, NULL),
       log_->GetActionsAndClear());
 }
 
 // Tests that power state requests are saved after failed configuration attempts
 // so they can be reused later: http://crosbug.com/p/31571
 TEST_F(DisplayConfiguratorTest, SaveDisplayPowerStateOnConfigFailure) {
   // Start out with two displays in extended mode.
   state_controller_.set_state(MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED);
   configurator_.Init(false);
   configurator_.ForceInitialConfigure(0);
   log_->GetActionsAndClear();
+  observer_.Reset();
 
   // Turn off the internal display, simulating docked mode.
-  EXPECT_TRUE(configurator_.SetDisplayPower(
+  configurator_.SetDisplayPower(
       chromeos::DISPLAY_POWER_INTERNAL_OFF_EXTERNAL_ON,
-      DisplayConfigurator::kSetDisplayPowerNoFlags));
+      DisplayConfigurator::kSetDisplayPowerNoFlags);
+  EXPECT_EQ(1, observer_.num_changes());
+  EXPECT_EQ(0, observer_.num_failures());
   log_->GetActionsAndClear();
 
   // Make all subsequent configuration requests fail and try to turn the
   // internal display back on.
   native_display_delegate_->set_max_configurable_pixels(1);
-  EXPECT_FALSE(configurator_.SetDisplayPower(
-      chromeos::DISPLAY_POWER_ALL_ON,
-      DisplayConfigurator::kSetDisplayPowerNoFlags));
+  configurator_.SetDisplayPower(chromeos::DISPLAY_POWER_ALL_ON,
+                                DisplayConfigurator::kSetDisplayPowerNoFlags);
+  EXPECT_EQ(1, observer_.num_changes());
+  EXPECT_EQ(1, observer_.num_failures());
   log_->GetActionsAndClear();
 
   // Simulate the external display getting disconnected and check that the
   // internal display is turned on (i.e. DISPLAY_POWER_ALL_ON is used) rather
   // than the earlier DISPLAY_POWER_INTERNAL_OFF_EXTERNAL_ON state.
   native_display_delegate_->set_max_configurable_pixels(0);
   UpdateOutputs(1, true);
-  EXPECT_EQ(
-      JoinActions(
-          kGrab,
-          GetFramebufferAction(small_mode_.size(), &outputs_[0], NULL).c_str(),
-          GetCrtcAction(outputs_[0], &small_mode_, gfx::Point(0, 0)).c_str(),
-          kUngrab,
-          NULL),
-      log_->GetActionsAndClear());
+  EXPECT_EQ(JoinActions(kGrab, GetFramebufferAction(small_mode_.size(),
+                                                    &outputs_[0], NULL).c_str(),
+                        GetCrtcAction(outputs_[0], &small_mode_,
+                                      gfx::Point(0, 0)).c_str(),
+                        kForceDPMS, kUngrab, NULL),
+            log_->GetActionsAndClear());
 }
 
 // Tests that the SetDisplayPowerState() task posted by HandleResume() doesn't
 // use a stale state if a new state is requested before it runs:
 // http://crosbug.com/p/32393
 TEST_F(DisplayConfiguratorTest, DontRestoreStalePowerStateAfterResume) {
   // Start out with two displays in mirrored mode.
   state_controller_.set_state(MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   configurator_.Init(false);
   configurator_.ForceInitialConfigure(0);
   log_->GetActionsAndClear();
+  observer_.Reset();
 
   // Turn off the internal display, simulating docked mode.
-  EXPECT_TRUE(configurator_.SetDisplayPower(
+  configurator_.SetDisplayPower(
       chromeos::DISPLAY_POWER_INTERNAL_OFF_EXTERNAL_ON,
-      DisplayConfigurator::kSetDisplayPowerNoFlags));
+      DisplayConfigurator::kSetDisplayPowerNoFlags);
+  EXPECT_EQ(1, observer_.num_changes());
+  EXPECT_EQ(0, observer_.num_failures());
   EXPECT_EQ(
       JoinActions(
           kGrab,
           GetFramebufferAction(big_mode_.size(), &outputs_[0], &outputs_[1])
               .c_str(),
           GetCrtcAction(outputs_[0], NULL, gfx::Point(0, 0)).c_str(),
           GetCrtcAction(outputs_[1], &big_mode_, gfx::Point(0, 0)).c_str(),
           kForceDPMS,
           kUngrab,
           NULL),
       log_->GetActionsAndClear());
 
   // Suspend and resume the system. Resuming should post a task to restore the
   // previous power state, additionally forcing a probe.
   configurator_.SuspendDisplays();
   configurator_.ResumeDisplays();
 
   // Before the task runs, exit docked mode.
-  EXPECT_TRUE(configurator_.SetDisplayPower(
-      chromeos::DISPLAY_POWER_ALL_ON,
-      DisplayConfigurator::kSetDisplayPowerNoFlags));
+  configurator_.SetDisplayPower(chromeos::DISPLAY_POWER_ALL_ON,
+                                DisplayConfigurator::kSetDisplayPowerNoFlags);
+  EXPECT_EQ(2, observer_.num_changes());
+  EXPECT_EQ(0, observer_.num_failures());
   EXPECT_EQ(
       JoinActions(
           kGrab,
           GetFramebufferAction(small_mode_.size(), &outputs_[0], &outputs_[1])
               .c_str(),
           GetCrtcAction(outputs_[0], &small_mode_, gfx::Point(0, 0)).c_str(),
           GetCrtcAction(outputs_[1], &small_mode_, gfx::Point(0, 0)).c_str(),
           kForceDPMS,
           kUngrab,
           NULL),
@@ skipping 28 matching lines @@
   EXPECT_EQ(
       JoinActions(
           kTakeDisplayControl,
           GetCrtcAction(outputs_[0], &small_mode_, gfx::Point(0, 0)).c_str(),
           NULL),
       log_->GetActionsAndClear());
 }
 
 }  // namespace test
 }  // namespace ui