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- using Xunit.Abstractions;
- namespace Terminal.Gui.LayoutTests;
- public class SetLayoutTests (ITestOutputHelper output)
- {
- private readonly ITestOutputHelper _output = output;
- [Fact]
- [AutoInitShutdown]
- public void Screen_Size_Change_Causes_Layout ()
- {
- Application.Top = new ();
- var view = new View
- {
- X = 3,
- Y = 2,
- Width = 10,
- Height = 1,
- Text = "0123456789"
- };
- Application.Top.Add (view);
- var rs = Application.Begin (Application.Top);
- Assert.Equal (new (0, 0, 80, 25), new Rectangle (0, 0, View.Driver.Cols, View.Driver.Rows));
- Assert.Equal (new (0, 0, View.Driver.Cols, View.Driver.Rows), Application.Top.Frame);
- Assert.Equal (new (0, 0, 80, 25), Application.Top.Frame);
- ((FakeDriver)Application.Driver!).SetBufferSize (20, 10);
- Assert.Equal (new (0, 0, View.Driver.Cols, View.Driver.Rows), Application.Top.Frame);
- Assert.Equal (new (0, 0, 20, 10), Application.Top.Frame);
- Application.End (rs);
- }
- [Fact]
- [TestRespondersDisposed]
- public void LayoutSubviews ()
- {
- var superRect = new Rectangle (0, 0, 100, 100);
- var super = new View { Frame = superRect, Text = "super" };
- var v1 = new View { X = 0, Y = 0, Width = 10, Height = 10 };
- var v2 = new View { X = 10, Y = 10, Width = 10, Height = 10 };
- super.Add (v1, v2);
- super.LayoutSubviews ();
- Assert.Equal (new (0, 0, 10, 10), v1.Frame);
- Assert.Equal (new (10, 10, 10, 10), v2.Frame);
- super.Dispose ();
- }
- [Fact]
- public void LayoutSubviews_No_SuperView ()
- {
- var root = new View ();
- var first = new View
- {
- Id = "first",
- X = 1,
- Y = 2,
- Height = 3,
- Width = 4
- };
- root.Add (first);
- var second = new View { Id = "second" };
- root.Add (second);
- second.X = Pos.Right (first) + 1;
- root.LayoutSubviews ();
- Assert.Equal (6, second.Frame.X);
- root.Dispose ();
- first.Dispose ();
- second.Dispose ();
- }
- [Fact]
- public void Add_Does_Not_Call_Layout ()
- {
- var superView = new View { Id = "superView" };
- var view = new View { Id = "view" };
- bool layoutStartedRaised = false;
- bool layoutCompleteRaised = false;
- superView.LayoutStarted += (sender, e) => layoutStartedRaised = true;
- superView.LayoutComplete += (sender, e) => layoutCompleteRaised = true;
- superView.Add (view);
- Assert.False (layoutStartedRaised);
- Assert.False (layoutCompleteRaised);
- superView.Remove (view);
- superView.Add (view);
- Assert.False (layoutStartedRaised);
- Assert.False (layoutCompleteRaised);
- }
- [Fact]
- public void LayoutSubViews_Raises_LayoutStarted_LayoutComplete ()
- {
- var superView = new View { Id = "superView" };
- int layoutStartedRaised = 0;
- int layoutCompleteRaised = 0;
- superView.LayoutStarted += (sender, e) => layoutStartedRaised++;
- superView.LayoutComplete += (sender, e) => layoutCompleteRaised++;
- superView.SetLayoutNeeded ();
- superView.LayoutSubviews ();
- Assert.Equal (1, layoutStartedRaised);
- Assert.Equal (1, layoutCompleteRaised);
- superView.BeginInit ();
- superView.EndInit ();
- superView.LayoutSubviews ();
- Assert.Equal (2, layoutStartedRaised);
- Assert.Equal (2, layoutCompleteRaised);
- }
- [Fact]
- public void LayoutSubviews_RootHas_SuperView ()
- {
- var top = new View ();
- var root = new View ();
- top.Add (root);
- var first = new View
- {
- Id = "first",
- X = 1,
- Y = 2,
- Height = 3,
- Width = 4
- };
- root.Add (first);
- var second = new View { Id = "second" };
- root.Add (second);
- second.X = Pos.Right (first) + 1;
- root.LayoutSubviews ();
- Assert.Equal (6, second.Frame.X);
- root.Dispose ();
- top.Dispose ();
- first.Dispose ();
- second.Dispose ();
- }
- [Fact]
- public void LayoutSubviews_ViewThatRefsSubView_Throws ()
- {
- var root = new View ();
- var super = new View ();
- root.Add (super);
- var sub = new View ();
- super.Add (sub);
- super.Width = Dim.Width (sub);
- Assert.Throws<InvalidOperationException> (() => root.LayoutSubviews ());
- root.Dispose ();
- super.Dispose ();
- }
- [Fact]
- public void LayoutSubviews_Uses_ContentSize ()
- {
- var superView = new View ()
- {
- Width = 5,
- Height = 5,
- };
- superView.SetContentSize (new (10, 10));
- var view = new View ()
- {
- X = Pos.Center ()
- };
- superView.Add (view);
- superView.LayoutSubviews ();
- Assert.Equal (5, view.Frame.X);
- superView.Dispose ();
- }
- // Test OnLayoutStarted/OnLayoutComplete - ensure that they are called at right times
- [Fact]
- public void LayoutSubviews_LayoutStarted_Complete ()
- {
- var superView = new View ();
- var view = new View ();
- var layoutStartedCount = 0;
- var layoutCompleteCount = 0;
- var borderLayoutStartedCount = 0;
- var borderLayoutCompleteCount = 0;
- view.LayoutStarted += (sender, e) => layoutStartedCount++;
- view.LayoutComplete += (sender, e) => layoutCompleteCount++;
- view.Border.LayoutStarted += (sender, e) => borderLayoutStartedCount++;
- view.Border.LayoutComplete += (sender, e) => borderLayoutCompleteCount++;
- superView.Add (view);
- Assert.Equal (0, borderLayoutStartedCount);
- Assert.Equal (0, borderLayoutCompleteCount);
- Assert.Equal (0, layoutStartedCount);
- Assert.Equal (0, layoutCompleteCount);
- superView.BeginInit ();
- Assert.Equal (0, borderLayoutStartedCount);
- Assert.Equal (0, borderLayoutCompleteCount);
- Assert.Equal (0, layoutStartedCount);
- Assert.Equal (0, layoutCompleteCount);
- superView.EndInit ();
- Assert.Equal (1, borderLayoutStartedCount);
- Assert.Equal (1, borderLayoutCompleteCount);
- Assert.Equal (1, layoutStartedCount);
- Assert.Equal (1, layoutCompleteCount);
- superView.LayoutSubviews ();
- Assert.Equal (1, borderLayoutStartedCount);
- Assert.Equal (1, borderLayoutCompleteCount);
- Assert.Equal (1, layoutStartedCount);
- Assert.Equal (1, layoutCompleteCount);
- superView.SetLayoutNeeded ();
- superView.LayoutSubviews ();
- Assert.Equal (2, borderLayoutStartedCount);
- Assert.Equal (2, borderLayoutCompleteCount);
- Assert.Equal (2, layoutStartedCount);
- Assert.Equal (2, layoutCompleteCount);
- superView.Dispose ();
- }
- [Fact]
- public void LayoutSubviews__Honors_IsLayoutNeeded ()
- {
- var superView = new View ();
- var view = new View ();
- var layoutStartedCount = 0;
- var layoutCompleteCount = 0;
- var borderLayoutStartedCount = 0;
- var borderLayoutCompleteCount = 0;
- view.LayoutStarted += (sender, e) => layoutStartedCount++;
- view.LayoutComplete += (sender, e) => layoutCompleteCount++;
- view.Border.LayoutStarted += (sender, e) => borderLayoutStartedCount++;
- view.Border.LayoutComplete += (sender, e) => borderLayoutCompleteCount++;
- superView.Add (view);
- superView.LayoutSubviews ();
- Assert.Equal (1, borderLayoutStartedCount);
- Assert.Equal (1, borderLayoutCompleteCount);
- Assert.Equal (1, layoutStartedCount);
- Assert.Equal (1, layoutCompleteCount);
- superView.LayoutSubviews ();
- Assert.Equal (1, borderLayoutStartedCount);
- Assert.Equal (1, borderLayoutCompleteCount);
- Assert.Equal (1, layoutStartedCount);
- Assert.Equal (1, layoutCompleteCount);
- superView.SetLayoutNeeded ();
- superView.LayoutSubviews ();
- Assert.Equal (2, borderLayoutStartedCount);
- Assert.Equal (2, borderLayoutCompleteCount);
- Assert.Equal (2, layoutStartedCount);
- Assert.Equal (2, layoutCompleteCount);
- superView.Dispose ();
- }
-
- [Fact]
- public void Set_X_PosAbsolute_Layout_Is_Implicit ()
- {
- var v = new View ();
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.X);
- v.X = 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (1, v.Frame.X);
- v.X = 2;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (2, v.Frame.X);
- v.X = Pos.Absolute (3);
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (3, v.Frame.X);
- v.X = Pos.Absolute (3) + 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (4, v.Frame.X);
- v.X = 1 + Pos.Absolute (1) + 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (3, v.Frame.X);
- }
- [Fact]
- public void Set_X_Non_PosAbsolute_Explicit_Layout_Required ()
- {
- var v = new View ();
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.X);
- v.X = Pos.Center ();
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.X);
- v.X = Pos.Percent (50);
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.X);
- v.X = Pos.Align (Alignment.Center);
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.X);
- v.X = Pos.Func (() => 10);
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.X);
- v.X = Pos.AnchorEnd ();
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.X);
- v.X = Pos.Top (new View ());
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.X);
- }
- [Fact]
- public void Set_Y_PosAbsolute_Layout_Is_Implicit ()
- {
- var v = new View ();
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Y);
- v.Y = 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (1, v.Frame.Y);
- v.Y = 2;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (2, v.Frame.Y);
- v.Y = Pos.Absolute (3);
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (3, v.Frame.Y);
- v.Y = Pos.Absolute (3) + 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (4, v.Frame.Y);
- v.Y = 1 + Pos.Absolute (1) + 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (3, v.Frame.Y);
- }
- [Fact]
- public void Set_Y_Non_PosAbsolute_Explicit_Layout_Required ()
- {
- var v = new View ();
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Y);
- v.Y = Pos.Center ();
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Y);
- v.Y = Pos.Percent (50);
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Y);
- v.Y = Pos.Align (Alignment.Center);
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Y);
- v.Y = Pos.Func (() => 10);
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Y);
- v.Y = Pos.AnchorEnd ();
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Y);
- v.Y = Pos.Top (new View ());
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Y);
- }
- [Fact]
- public void Set_Width_DimAbsolute_Layout_Is_Implicit ()
- {
- var v = new View ();
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Width);
- v.Width = 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (1, v.Frame.Width);
- v.Width = 2;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (2, v.Frame.Width);
- v.Width = Dim.Absolute (3);
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (3, v.Frame.Width);
- v.Width = Dim.Absolute (3) + 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (4, v.Frame.Width);
- v.Width = 1 + Dim.Absolute (1) + 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (3, v.Frame.Width);
- }
- [Fact]
- public void Set_Width_Non_DimAbsolute_Explicit_Layout_Required ()
- {
- var v = new View ();
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Width);
- v.Width = Dim.Auto();
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Width);
- v.Width = Dim.Percent (50);
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Width);
- v.Width = Dim.Fill ();
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Width);
- v.Width = Dim.Func (() => 10);
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Width);
- v.Width = Dim.Width(new View ());
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Width);
- }
- [Fact]
- public void Set_Height_DimAbsolute_Layout_Is_Implicit ()
- {
- var v = new View ();
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Height);
- v.Height = 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (1, v.Frame.Height);
- v.Height = 2;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (2, v.Frame.Height);
- v.Height = Dim.Absolute (3);
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (3, v.Frame.Height);
- v.Height = Dim.Absolute (3) + 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (4, v.Frame.Height);
- v.Height = 1 + Dim.Absolute (1) + 1;
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (3, v.Frame.Height);
- }
- [Fact]
- public void Set_Height_Non_DimAbsolute_Explicit_Layout_Required ()
- {
- var v = new View ();
- Assert.False (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Height);
- v.Height = Dim.Auto ();
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Height);
- v.Height = Dim.Percent (50);
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Height);
- v.Height = Dim.Fill ();
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Height);
- v.Height = Dim.Func (() => 10);
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Height);
- v.Height = Dim.Height (new View ());
- Assert.True (v.IsLayoutNeeded ());
- Assert.Equal (0, v.Frame.Height);
- }
- [Fact]
- [TestRespondersDisposed]
- public void Change_Height_or_Width_MakesComputed ()
- {
- var v = new View { Frame = Rectangle.Empty };
- v.Height = Dim.Fill ();
- v.Width = Dim.Fill ();
- v.Dispose ();
- }
- [Fact]
- [TestRespondersDisposed]
- public void Change_X_or_Y_Absolute ()
- {
- var frame = new Rectangle (1, 2, 3, 4);
- var newFrame = new Rectangle (10, 20, 3, 4);
- var v = new View { Frame = frame };
- v.X = newFrame.X;
- v.Y = newFrame.Y;
- v.Layout ();
- Assert.Equal (newFrame, v.Frame);
- Assert.Equal (
- new (0, 0, newFrame.Width, newFrame.Height),
- v.Viewport
- ); // With Absolute Viewport *is* deterministic before Layout
- Assert.Equal ($"Absolute({newFrame.X})", v.X.ToString ());
- Assert.Equal ($"Absolute({newFrame.Y})", v.Y.ToString ());
- Assert.Equal (Dim.Absolute (3), v.Width);
- Assert.Equal (Dim.Absolute (4), v.Height);
- v.Dispose ();
- }
- [Fact]
- [TestRespondersDisposed]
- public void Change_X_or_Y_MakesComputed ()
- {
- var v = new View { Frame = Rectangle.Empty };
- v.X = Pos.Center ();
- v.Y = Pos.Center ();
- v.Dispose ();
- }
- [Fact]
- [TestRespondersDisposed]
- public void Change_X_Y_Height_Width_Absolute ()
- {
- var v = new View { Frame = Rectangle.Empty };
- v.X = 1;
- v.Y = 2;
- v.Height = 3;
- v.Width = 4;
- v.Dispose ();
- v = new () { Frame = Rectangle.Empty };
- v.X = Pos.Center ();
- v.Y = Pos.Center ();
- v.Width = Dim.Fill ();
- v.Height = Dim.Fill ();
- v.Dispose ();
- v = new () { Frame = Rectangle.Empty };
- v.X = Pos.Center ();
- v.Y = Pos.Center ();
- v.Width = Dim.Fill ();
- v.Height = Dim.Fill ();
- v.X = 1;
- v.Dispose ();
- v = new () { Frame = Rectangle.Empty };
- v.X = Pos.Center ();
- v.Y = Pos.Center ();
- v.Width = Dim.Fill ();
- v.Height = Dim.Fill ();
- v.Y = 2;
- v.Dispose ();
- v = new () { Frame = Rectangle.Empty };
- v.X = Pos.Center ();
- v.Y = Pos.Center ();
- v.Width = Dim.Fill ();
- v.Height = Dim.Fill ();
- v.Width = 3;
- v.Dispose ();
- v = new () { Frame = Rectangle.Empty };
- v.X = Pos.Center ();
- v.Y = Pos.Center ();
- v.Width = Dim.Fill ();
- v.Height = Dim.Fill ();
- v.Height = 3;
- v.Dispose ();
- v = new () { Frame = Rectangle.Empty };
- v.X = Pos.Center ();
- v.Y = Pos.Center ();
- v.Width = Dim.Fill ();
- v.Height = Dim.Fill ();
- v.X = 1;
- v.Y = 2;
- v.Height = 3;
- v.Width = 4;
- v.Dispose ();
- }
- [Fact]
- public void Constructor ()
- {
- var v = new View ();
- v.Dispose ();
- var frame = Rectangle.Empty;
- v = new () { Frame = frame };
- v.Layout ();
- Assert.Equal (frame, v.Frame);
- Assert.Equal (
- new (0, 0, frame.Width, frame.Height),
- v.Viewport
- ); // With Absolute Viewport *is* deterministic before Layout
- Assert.Equal (Pos.Absolute (0), v.X);
- Assert.Equal (Pos.Absolute (0), v.Y);
- Assert.Equal (Dim.Absolute (0), v.Width);
- Assert.Equal (Dim.Absolute (0), v.Height);
- v.Dispose ();
- frame = new (1, 2, 3, 4);
- v = new () { Frame = frame };
- v.Layout ();
- Assert.Equal (frame, v.Frame);
- Assert.Equal (
- new (0, 0, frame.Width, frame.Height),
- v.Viewport
- ); // With Absolute Viewport *is* deterministic before Layout
- Assert.Equal (Pos.Absolute (1), v.X);
- Assert.Equal (Pos.Absolute (2), v.Y);
- Assert.Equal (Dim.Absolute (3), v.Width);
- Assert.Equal (Dim.Absolute (4), v.Height);
- v.Dispose ();
- v = new () { Frame = frame, Text = "v" };
- v.Layout ();
- Assert.Equal (frame, v.Frame);
- Assert.Equal (
- new (0, 0, frame.Width, frame.Height),
- v.Viewport
- ); // With Absolute Viewport *is* deterministic before Layout
- Assert.Equal (Pos.Absolute (1), v.X);
- Assert.Equal (Pos.Absolute (2), v.Y);
- Assert.Equal (Dim.Absolute (3), v.Width);
- Assert.Equal (Dim.Absolute (4), v.Height);
- v.Dispose ();
- v = new () { X = frame.X, Y = frame.Y, Text = "v" };
- v.Layout ();
- Assert.Equal (new (frame.X, frame.Y, 0, 0), v.Frame);
- Assert.Equal (new (0, 0, 0, 0), v.Viewport); // With Absolute Viewport *is* deterministic before Layout
- Assert.Equal (Pos.Absolute (1), v.X);
- Assert.Equal (Pos.Absolute (2), v.Y);
- Assert.Equal (Dim.Absolute (0), v.Width);
- Assert.Equal (Dim.Absolute (0), v.Height);
- v.Dispose ();
- v = new ();
- v.Layout ();
- Assert.Equal (new (0, 0, 0, 0), v.Frame);
- Assert.Equal (new (0, 0, 0, 0), v.Viewport); // With Absolute Viewport *is* deterministic before Layout
- Assert.Equal (Pos.Absolute (0), v.X);
- Assert.Equal (Pos.Absolute (0), v.Y);
- Assert.Equal (Dim.Absolute (0), v.Width);
- Assert.Equal (Dim.Absolute (0), v.Height);
- v.Dispose ();
- v = new () { X = frame.X, Y = frame.Y, Width = frame.Width, Height = frame.Height };
- v.Layout ();
- Assert.Equal (new (frame.X, frame.Y, 3, 4), v.Frame);
- Assert.Equal (new (0, 0, 3, 4), v.Viewport); // With Absolute Viewport *is* deterministic before Layout
- Assert.Equal (Pos.Absolute (1), v.X);
- Assert.Equal (Pos.Absolute (2), v.Y);
- Assert.Equal (Dim.Absolute (3), v.Width);
- Assert.Equal (Dim.Absolute (4), v.Height);
- v.Dispose ();
- }
- /// <summary>
- /// This tests the special case in LayoutSubviews. See https://github.com/gui-cs/Terminal.Gui/issues/2461</summary>
- [Fact]
- public void Nested_SubViews_Ref_Topmost_SuperView ()
- {
- var superView = new View { Width = 80, Height = 25, Text = "superView" };
- var subView1 = new View
- {
- Id = "subView1 - refs superView",
- Width = Dim.Width (superView) - 2, // 78
- Height = Dim.Height (superView) - 2 // 23
- };
- superView.Add (subView1);
- var subView1OfSubView1 = new View ()
- {
- Id = "subView1OfSubView1 - refs superView",
- Width = Dim.Width (superView) - 4, // 76
- Height = Dim.Height (superView) - 4 // 21
- };
- subView1.Add (subView1OfSubView1);
- superView.Layout ();
- Assert.Equal (80, superView.Frame.Width);
- Assert.Equal (25, superView.Frame.Height);
- Assert.Equal (78, subView1.Frame.Width);
- Assert.Equal (23, subView1.Frame.Height);
- //Assert.Equal (76, subView2.Frame.Width);
- //Assert.Equal (21, subView2.Frame.Height);
- Assert.Equal (76, subView1OfSubView1.Frame.Width);
- Assert.Equal (21, subView1OfSubView1.Frame.Height);
- superView.Dispose ();
- }
- /// <summary>This is an intentionally obtuse test. See https://github.com/gui-cs/Terminal.Gui/issues/2461</summary>
- [Fact]
- public void Does_Not_Throw_If_Nested_SubViews_Ref_Topmost_SuperView ()
- {
- var t = new View { Width = 80, Height = 25, Text = "top" };
- var w = new Window
- {
- Width = Dim.Width (t) - 2, // 78
- Height = Dim.Height (t) - 2 // 23
- };
- var f = new FrameView ();
- var v1 = new View
- {
- Width = Dim.Width (w) - 2, // 76
- Height = Dim.Height (w) - 2 // 21
- };
- var v2 = new View
- {
- Width = Dim.Width (v1) - 2, // 74
- Height = Dim.Height (v1) - 2 // 19
- };
- f.Width = Dim.Width (t) - Dim.Width (w) + 4; // 80 - 74 = 6
- f.Height = Dim.Height (t) - Dim.Height (w) + 4; // 25 - 19 = 6
- f.Add (v1, v2);
- w.Add (f);
- t.Add (w);
- t.BeginInit ();
- t.EndInit ();
- // f references t and w here; t is f's super-superview and w is f's superview. This is supported!
- Exception exception = Record.Exception (() => t.Layout ());
- Assert.Null (exception);
- Assert.Equal (80, t.Frame.Width);
- Assert.Equal (25, t.Frame.Height);
- Assert.Equal (78, w.Frame.Width);
- Assert.Equal (23, w.Frame.Height);
- Assert.Equal (6, f.Frame.Width);
- Assert.Equal (6, f.Frame.Height);
- Assert.Equal (76, v1.Frame.Width);
- Assert.Equal (21, v1.Frame.Height);
- Assert.Equal (74, v2.Frame.Width);
- Assert.Equal (19, v2.Frame.Height);
- t.Dispose ();
- }
- }
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