add tests

Author: emmauss

tests/Avalonia.Base.UnitTests/Styling/ContainerTests.cs

@@ -0,0 +1,161 @@
+using System;
+using Avalonia.Base.UnitTests.Layout;
+using Avalonia.Controls;
+using Avalonia.Styling;
+using Xunit;
+
+namespace Avalonia.Base.UnitTests.Styling
+{
+    public class ContainerTests
+    {
+        [Fact]
+        public void Container_Cannot_Be_Added_To_Style_Children()
+        {
+            var target = new Container();
+            var style = new Style();
+
+            Assert.Throws<InvalidOperationException>(() => style.Children.Add(target));
+        }
+
+        [Fact]
+        public void Container_Width_Queries_Matches()
+        {
+            var root = new LayoutTestRoot()
+            {
+                ClientSize = new Size(400, 400)
+            };
+            var containerQuery1 = new Container(x => new WidthQuery(x, QueryComparisonOperator.LessThanOrEquals, 500));
+            containerQuery1.Children.Add(new Style(x => x.Is<Border>())
+            {
+                Setters = { new Setter(Control.WidthProperty, 200.0) }
+            });            
+            var containerQuery2 = new Container(x => new WidthQuery(x, QueryComparisonOperator.GreaterThan, 500));
+            containerQuery2.Children.Add(new Style(x => x.Is<Border>())
+            {
+                Setters = { new Setter(Control.WidthProperty, 500.0) }
+            });
+            root.Styles.Add(containerQuery1);
+            root.Styles.Add(containerQuery2);
+            var child = new Border()
+            {
+                Name = "Child",
+                HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Stretch
+            };
+            var border = new Border()
+            {
+                ContainerType = Avalonia.Layout.ContainerType.Width,
+                HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Stretch,
+                VerticalAlignment = Avalonia.Layout.VerticalAlignment.Stretch,
+                Child = child,
+                Name = "Parent"
+            };
+
+            root.Child = border;
+
+            root.LayoutManager.ExecuteInitialLayoutPass();
+            Assert.Equal(child.Width, 200.0);
+
+            root.ClientSize = new Size(600, 600);
+            root.InvalidateMeasure();
+
+            root.LayoutManager.ExecuteLayoutPass();
+            Assert.Equal(child.Width, 500.0);
+        }
+
+        [Fact]
+        public void Container_Height_Queries_Matches()
+        {
+            var root = new LayoutTestRoot()
+            {
+                ClientSize = new Size(400, 400)
+            };
+            var containerQuery1 = new Container(x => new HeightQuery(x, QueryComparisonOperator.LessThanOrEquals, 500));
+            containerQuery1.Children.Add(new Style(x => x.Is<Border>())
+            {
+                Setters = { new Setter(Control.HeightProperty, 200.0) }
+            });
+            var containerQuery2 = new Container(x => new HeightQuery(x, QueryComparisonOperator.GreaterThan, 500));
+            containerQuery2.Children.Add(new Style(x => x.Is<Border>())
+            {
+                Setters = { new Setter(Control.HeightProperty, 500.0) }
+            });
+            root.Styles.Add(containerQuery1);
+            root.Styles.Add(containerQuery2);
+            var child = new Border()
+            {
+                Name = "Child",
+                VerticalAlignment = Avalonia.Layout.VerticalAlignment.Stretch
+            };
+            var border = new Border()
+            {
+                ContainerType = Avalonia.Layout.ContainerType.Height,
+                HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Stretch,
+                VerticalAlignment = Avalonia.Layout.VerticalAlignment.Stretch,
+                Child = child,
+                Name = "Parent"
+            };
+
+            root.Child = border;
+
+            root.LayoutManager.ExecuteInitialLayoutPass();
+            Assert.Equal(child.Height, 200.0);
+
+            root.ClientSize = new Size(600, 600);
+            root.InvalidateMeasure();
+
+            root.LayoutManager.ExecuteLayoutPass();
+            Assert.Equal(child.Height, 500.0);
+        }
+
+        [Fact]
+        public void Container_Queries_Matches_Name()
+        {
+            var root = new LayoutTestRoot()
+            {
+                ClientSize = new Size(600, 600)
+            };
+            var containerQuery1 = new Container(x => new WidthQuery(x, QueryComparisonOperator.LessThanOrEquals, 500));
+            containerQuery1.Children.Add(new Style(x => x.Is<Border>())
+            {
+                Setters = { new Setter(Control.WidthProperty, 200.0) }
+            });
+            var containerQuery2 = new Container(x => new WidthQuery(x, QueryComparisonOperator.LessThanOrEquals, 500), "TEST");
+            containerQuery2.Children.Add(new Style(x => x.Is<Border>())
+            {
+                Setters = { new Setter(Control.WidthProperty, 300.0) }
+            });
+            root.Styles.Add(containerQuery2);
+            root.Styles.Add(containerQuery1);
+            var child = new Border()
+            {
+                Name = "Child",
+                HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Stretch
+            };
+            var controlInner = new ContentControl()
+            {
+                ContainerType = Avalonia.Layout.ContainerType.Width,
+                ContainerName = "TEST",
+                Width = 400,
+                Height = 400,
+                Content = child,
+                Name = "Inner"
+
+            };
+            var border = new Border()
+            {
+                ContainerType = Avalonia.Layout.ContainerType.Width,
+                HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Stretch,
+                VerticalAlignment = Avalonia.Layout.VerticalAlignment.Stretch,
+                Child = controlInner,
+                Name = "Parent"
+            };
+
+            root.Child = border;
+
+            root.LayoutManager.ExecuteInitialLayoutPass();
+
+            root.LayoutManager.ExecuteLayoutPass();
+            Assert.Equal(child.Width, 300.0);
+        }
+    }
+}