Fix tests

tests/Avalonia.Base.UnitTests/Input/PointerTestsBase.cs

@@ -35,6 +35,7 @@ public abstract class PointerTestsBase
         impl.DefaultValue = DefaultValue.Mock;
         impl.SetupAllProperties();
         impl.SetupGet(r => r.RenderScaling).Returns(1);
+        impl.Setup(r => r.TryGetFeature(It.IsAny<Type>())).Returns(null);
         impl.Setup(r => r.CreateRenderer(It.IsAny<IRenderRoot>())).Returns(renderer);
         impl.Setup(r => r.PointToScreen(It.IsAny<Point>())).Returns<Point>(p => new PixelPoint((int)p.X, (int)p.Y));
         impl.Setup(r => r.PointToClient(It.IsAny<PixelPoint>())).Returns<PixelPoint>(p => new Point(p.X, p.Y));

tests/Avalonia.LeakTests/ControlTests.cs

@@ -465,6 +465,7 @@ namespace Avalonia.LeakTests
                 var renderer = new Mock<IRenderer>();
                 renderer.Setup(x => x.Dispose());
                 var impl = new Mock<IWindowImpl>();
+                impl.Setup(r => r.TryGetFeature(It.IsAny<Type>())).Returns(null);
                 impl.SetupGet(x => x.RenderScaling).Returns(1);
                 impl.SetupProperty(x => x.Closed);
                 impl.Setup(x => x.CreateRenderer(It.IsAny<IRenderRoot>())).Returns(renderer.Object);

tests/Avalonia.UnitTests/MockWindowingPlatform.cs

@@ -35,6 +35,8 @@ namespace Avalonia.UnitTests
             windowImpl.Setup(x => x.Screen).Returns(CreateScreenMock().Object);
             windowImpl.Setup(x => x.Position).Returns(() => position);
 
+            windowImpl.Setup(r => r.TryGetFeature(It.IsAny<Type>())).Returns(null);
+
             windowImpl.Setup(x => x.CreatePopup()).Returns(() =>
             {
                 return CreatePopupMock(windowImpl.Object).Object;
@@ -95,6 +97,7 @@ namespace Avalonia.UnitTests
             popupImpl.Setup(x => x.RenderScaling).Returns(1);
             popupImpl.Setup(x => x.PopupPositioner).Returns(positioner);
 
+            popupImpl.Setup(r => r.TryGetFeature(It.IsAny<Type>())).Returns(null);
             popupImpl.Setup(x => x.Dispose()).Callback(() =>
             {
                 popupImpl.Object.Closed?.Invoke();