Remove unneeded tests.

tests/Avalonia.Controls.UnitTests/Presenters/ItemsPresenterTests_Virtualization.cs

@@ -1,374 +0,0 @@
-////using System;
-////using System.Collections.Generic;
-////using System.Linq;
-////using Avalonia.Controls.Generators;
-////using Avalonia.Controls.Presenters;
-////using Avalonia.Controls.Primitives;
-////using Avalonia.Controls.Templates;
-////using Avalonia.Layout;
-////using Avalonia.Platform;
-////using Avalonia.Rendering;
-////using Avalonia.UnitTests;
-////using Avalonia.VisualTree;
-////using Xunit;
-
-////namespace Avalonia.Controls.UnitTests.Presenters
-////{
-////    public class ItemsPresenterTests_Virtualization
-////    {
-////        [Fact]
-////        public void Should_Not_Create_Items_Before_Added_To_Visual_Tree()
-////        {
-////            var items = Enumerable.Range(0, 10).Select(x => $"Item {x}").ToList();
-////            var target = new TestItemsPresenter(true)
-////            {
-////                Items = items,
-////                ItemsPanel = VirtualizingPanelTemplate(Orientation.Vertical),
-////                ItemTemplate = ItemTemplate(),
-////                VirtualizationMode = ItemVirtualizationMode.Simple,
-////            };
-
-////            var scroller = new ScrollContentPresenter
-////            {
-////                Content = target,
-////            };
-
-////            scroller.UpdateChild();
-////            target.ApplyTemplate();
-////            target.Measure(new Size(100, 100));
-////            target.Arrange(new Rect(0, 0, 100, 100));
-
-////            Assert.Empty(target.Panel.Children);
-
-////            var root = new TestRoot
-////            {
-////                Child = scroller,
-////            };
-
-////            target.InvalidateMeasure();
-////            target.Panel.InvalidateMeasure();
-////            target.Measure(new Size(100, 100));
-////            target.Arrange(new Rect(0, 0, 100, 100));
-
-////            Assert.Equal(10, target.Panel.Children.Count);
-////        }
-
-////        [Fact]
-////        public void Should_Return_IsLogicalScrollEnabled_False_When_Has_No_Virtualizing_Panel()
-////        {
-////            var target = CreateTarget();
-////            target.ClearValue(ItemsPresenter.ItemsPanelProperty);
-
-////            target.ApplyTemplate();
-
-////            Assert.False(((ILogicalScrollable)target).IsLogicalScrollEnabled);
-////        }
-
-////        [Fact]
-////        public void Should_Return_IsLogicalScrollEnabled_False_When_VirtualizationMode_None()
-////        {
-////            var target = CreateTarget(ItemVirtualizationMode.None);
-
-////            target.ApplyTemplate();
-
-////            Assert.False(((ILogicalScrollable)target).IsLogicalScrollEnabled);
-////        }
-
-////        [Fact]
-////        public void Should_Return_IsLogicalScrollEnabled_False_When_Doesnt_Have_ScrollPresenter_Parent()
-////        {
-////            var target = new ItemsPresenter
-////            {
-////                ItemsPanel = VirtualizingPanelTemplate(),
-////                ItemTemplate = ItemTemplate(),
-////                VirtualizationMode = ItemVirtualizationMode.Simple,
-////            };
-
-////            target.ApplyTemplate();
-
-////            Assert.False(((ILogicalScrollable)target).IsLogicalScrollEnabled);
-////        }
-
-////        [Fact]
-////        public void Should_Return_IsLogicalScrollEnabled_True()
-////        {
-////            var target = CreateTarget();
-
-////            target.ApplyTemplate();
-
-////            Assert.True(((ILogicalScrollable)target).IsLogicalScrollEnabled);
-////        }
-
-////        [Fact]
-////        public void Parent_ScrollContentPresenter_Properties_Should_Be_Set()
-////        {
-////            var target = CreateTarget();
-
-////            target.ApplyTemplate();
-////            target.Measure(new Size(100, 100));
-////            target.Arrange(new Rect(0, 0, 100, 100));
-
-////            var scroll = (ScrollContentPresenter)target.Parent;
-////            Assert.Equal(new Size(10, 20), scroll.Extent);
-////            Assert.Equal(new Size(100, 10), scroll.Viewport);
-////        }
-
-////        [Fact]
-////        public void Should_Fill_Panel_With_Containers()
-////        {
-////            var target = CreateTarget();
-
-////            target.ApplyTemplate();
-
-////            target.Measure(new Size(100, 100));
-////            Assert.Equal(10, target.Panel.Children.Count);
-
-////            target.Arrange(new Rect(0, 0, 100, 100));
-////            Assert.Equal(10, target.Panel.Children.Count);
-////        }
-
-////        [Fact]
-////        public void Should_Only_Create_Enough_Containers_To_Display_All_Items()
-////        {
-////            var target = CreateTarget(itemCount: 2);
-
-////            target.ApplyTemplate();
-////            target.Measure(new Size(100, 100));
-////            target.Arrange(new Rect(0, 0, 100, 100));
-
-////            Assert.Equal(2, target.Panel.Children.Count);
-////        }
-
-////        [Fact]
-////        public void Should_Expand_To_Fit_Containers_When_Flexible_Size()
-////        {
-////            var target = CreateTarget();
-
-////            target.ApplyTemplate();
-////            target.Measure(Size.Infinity);
-////            target.Arrange(new Rect(target.DesiredSize));
-
-////            Assert.Equal(new Size(10, 200), target.DesiredSize);
-////            Assert.Equal(new Size(10, 200), target.Bounds.Size);
-////            Assert.Equal(20, target.Panel.Children.Count);
-////        }
-
-////        [Fact]
-////        public void Initial_Item_DataContexts_Should_Be_Correct()
-////        {
-////            var target = CreateTarget();
-////            var items = (IList<string>)target.Items;
-
-////            target.ApplyTemplate();
-////            target.Measure(new Size(100, 100));
-////            target.Arrange(new Rect(0, 0, 100, 100));
-
-////            for (var i = 0; i < target.Panel.Children.Count; ++i)
-////            {
-////                Assert.Equal(items[i], target.Panel.Children[i].DataContext);
-////            }
-////        }
-
-////        [Fact]
-////        public void Should_Add_New_Items_When_Control_Is_Enlarged()
-////        {
-////            var target = CreateTarget();
-////            var items = (IList<string>)target.Items;
-
-////            target.ApplyTemplate();
-////            target.Measure(new Size(100, 100));
-////            target.Arrange(new Rect(0, 0, 100, 100));
-
-////            Assert.Equal(10, target.Panel.Children.Count);
-
-////            target.Measure(new Size(120, 120));
-////            target.Arrange(new Rect(0, 0, 100, 120));
-
-////            Assert.Equal(12, target.Panel.Children.Count);
-
-////            for (var i = 0; i < target.Panel.Children.Count; ++i)
-////            {
-////                Assert.Equal(items[i], target.Panel.Children[i].DataContext);
-////            }
-////        }
-
-////        [Fact]
-////        public void Should_Not_Create_Virtualizer_Before_Panel()
-////        {
-////            var target = CreateTarget();
-
-////            Assert.Null(target.Panel);
-////            Assert.Null(target.Virtualizer);
-////        }
-
-////        [Fact]
-////        public void Changing_VirtualizationMode_None_To_Simple_Should_Update_Control()
-////        {
-////            var target = CreateTarget(mode: ItemVirtualizationMode.None);
-////            var scroll = (ScrollContentPresenter)target.Parent;
-
-////            scroll.Measure(new Size(100, 100));
-////            scroll.Arrange(new Rect(0, 0, 100, 100));
-
-////            Assert.Equal(20, target.Panel.Children.Count);
-////            Assert.Equal(new Size(100, 200), scroll.Extent);
-////            Assert.Equal(new Size(100, 100), scroll.Viewport);
-
-////            target.VirtualizationMode = ItemVirtualizationMode.Simple;
-////            target.Measure(new Size(100, 100));
-////            target.Arrange(new Rect(0, 0, 100, 100));
-
-////            Assert.Equal(10, target.Panel.Children.Count);
-////            Assert.Equal(new Size(10, 20), scroll.Extent);
-////            Assert.Equal(new Size(100, 10), scroll.Viewport);
-////        }
-
-////        [Fact]
-////        public void Changing_VirtualizationMode_None_To_Simple_Should_Add_Correct_Number_Of_Controls()
-////        {
-////            using (UnitTestApplication.Start(new TestServices()))
-////            {
-////                var target = CreateTarget(mode: ItemVirtualizationMode.None);
-////                var scroll = (TestScroller)target.Parent;
-
-////                scroll.Width = scroll.Height = 100;
-////                scroll.LayoutManager.ExecuteInitialLayoutPass();
-
-////                // Ensure than an intermediate measure pass doesn't add more controls than it
-////                // should. This can happen if target gets measured with Size.Infinity which
-////                // is what the available size should be when VirtualizationMode == None but not
-////                // what it should after VirtualizationMode is changed to Simple.
-////                target.Panel.Children.CollectionChanged += (s, e) =>
-////                {
-////                    Assert.InRange(target.Panel.Children.Count, 0, 10);
-////                };
-
-////                target.VirtualizationMode = ItemVirtualizationMode.Simple;
-////                ((ILayoutRoot)scroll.GetVisualRoot()).LayoutManager.ExecuteLayoutPass();
-
-////                Assert.Equal(10, target.Panel.Children.Count);
-////            }
-////        }
-
-////        [Fact]
-////        public void Changing_VirtualizationMode_Simple_To_None_Should_Update_Control()
-////        {
-////            var target = CreateTarget();
-////            var scroll = (ScrollContentPresenter)target.Parent;
-
-////            scroll.Measure(new Size(100, 100));
-////            scroll.Arrange(new Rect(0, 0, 100, 100));
-
-////            Assert.Equal(10, target.Panel.Children.Count);
-////            Assert.Equal(new Size(10, 20), scroll.Extent);
-////            Assert.Equal(new Size(100, 10), scroll.Viewport);
-
-////            target.VirtualizationMode = ItemVirtualizationMode.None;
-////            target.Measure(new Size(100, 100));
-////            target.Arrange(new Rect(0, 0, 100, 100));
-
-////            // Here - unlike changing the other way - we need to do a layout pass on the scroll
-////            // content presenter as non-logical scroll values are only updated on arrange.
-////            scroll.Measure(new Size(100, 100));
-////            scroll.Arrange(new Rect(0, 0, 100, 100));
-
-////            Assert.Equal(20, target.Panel.Children.Count);
-////            Assert.Equal(new Size(100, 200), scroll.Extent);
-////            Assert.Equal(new Size(100, 100), scroll.Viewport);
-////        }
-
-////        private static ItemsPresenter CreateTarget(
-////            ItemVirtualizationMode mode = ItemVirtualizationMode.Simple,
-////            Orientation orientation = Orientation.Vertical,
-////            bool useContainers = true,
-////            int itemCount = 20)
-////        {
-////            ItemsPresenter result;
-////            var items = Enumerable.Range(0, itemCount).Select(x => $"Item {x}").ToList();
-
-////            var scroller = new TestScroller
-////            {
-////                CanHorizontallyScroll = false,
-////                CanVerticallyScroll = true,
-////                Content = result = new TestItemsPresenter(useContainers)
-////                {
-////                    Items = items,
-////                    ItemsPanel = VirtualizingPanelTemplate(orientation),
-////                    ItemTemplate = ItemTemplate(),
-////                    VirtualizationMode = mode,
-////                }
-////            };
-
-////            scroller.UpdateChild();
-
-////            return result;
-////        }
-
-////        private static IDataTemplate ItemTemplate()
-////        {
-////            return new FuncDataTemplate<string>((x, _) => new Canvas
-////            {
-////                Width = 10,
-////                Height = 10,
-////            });
-////        }
-
-////        private static ITemplate<Panel> VirtualizingPanelTemplate(
-////            Orientation orientation = Orientation.Vertical)
-////        {
-////            return new FuncTemplate<Panel>(() => new VirtualizingStackPanel
-////            {
-////                Orientation = orientation,
-////            });
-////        }
-
-////        private class TestScroller : ScrollContentPresenter, IRenderRoot, ILayoutRoot
-////        {
-////            public TestScroller()
-////            {
-////                LayoutManager = new LayoutManager(this);
-////            }
-
-////            public IRenderer Renderer { get; }
-////            public Size ClientSize { get; }
-////            public double RenderScaling => 1;
-
-////            public Size MaxClientSize => Size.Infinity;
-
-////            public double LayoutScaling => 1;
-
-////            public ILayoutManager LayoutManager { get; }
-
-////            public IRenderTarget CreateRenderTarget() => throw new NotImplementedException();
-////            public void Invalidate(Rect rect) => throw new NotImplementedException();
-////            public Point PointToClient(PixelPoint p) => throw new NotImplementedException();
-////            public PixelPoint PointToScreen(Point p) => throw new NotImplementedException();
-////        }
-
-////        private class TestItemsPresenter : ItemsPresenter
-////        {
-////            private bool _useContainers;
-
-////            public TestItemsPresenter(bool useContainers)
-////            {
-////                _useContainers = useContainers;
-////            }
-
-////            protected override IItemContainerGenerator CreateItemContainerGenerator()
-////            {
-////                return _useContainers ?
-////                    new ItemContainerGenerator<TestContainer>(this, TestContainer.ContentProperty, null) :
-////                    new ItemContainerGenerator(this);
-////            }
-////        }
-
-////        private class TestContainer : ContentControl
-////        {
-////            public TestContainer()
-////            {
-////                Width = 10;
-////                Height = 10;
-////            }
-////        }
-////    }
-////}