[Night Light] Backend ui::Layer work

ui/compositor/layer_animator_unittest.cc

Index: ui/compositor/layer_animator_unittest.cc
diff --git a/ui/compositor/layer_animator_unittest.cc b/ui/compositor/layer_animator_unittest.cc
index 53fec5f0e7ee0d798167cd02e72a85e664837241..4b9575b4ba2cd2146217c5a2346ee2695a5dc7c4 100644
--- a/ui/compositor/layer_animator_unittest.cc
+++ b/ui/compositor/layer_animator_unittest.cc
@@ -2251,6 +2251,39 @@ TEST(LayerAnimatorTest, Color) {
             ColorToString(delegate.GetColorForAnimation()));
 }
 
+// Verifies temperature property is modified appropriately.
+TEST(LayerAnimatorTest, Temperature) {
+  TestLayerAnimationDelegate delegate;
+  scoped_refptr<LayerAnimator> animator(CreateDefaultTestAnimator(&delegate));
+
+  float start_temperature = 0.0f;
+  float middle_temperature = 0.5f;
+  float target_temperature = 1.0f;
+
+  base::TimeDelta delta = base::TimeDelta::FromSeconds(1);
+
+  delegate.SetTemperatureFromAnimation(start_temperature);
+
+  animator->ScheduleAnimation(new LayerAnimationSequence(
+      LayerAnimationElement::CreateTemperatureElement(target_temperature,
+                                                      delta)));
+
+  EXPECT_TRUE(animator->is_animating());
+  EXPECT_EQ(start_temperature, delegate.GetTemperatureFromAnimation());
+
+  base::TimeTicks start_time = animator->last_step_time();
+
+  animator->Step(start_time + base::TimeDelta::FromMilliseconds(500));
+
+  EXPECT_TRUE(animator->is_animating());
+  EXPECT_EQ(middle_temperature, delegate.GetTemperatureFromAnimation());
+
+  animator->Step(start_time + base::TimeDelta::FromMilliseconds(1000));
+
+  EXPECT_FALSE(animator->is_animating());
+  EXPECT_EQ(target_temperature, delegate.GetTemperatureFromAnimation());
+}
+
 // Verifies SchedulePauseForProperties().
 TEST(LayerAnimatorTest, SchedulePauseForProperties) {
   scoped_refptr<LayerAnimator> animator(CreateDefaultTestAnimator());