mirror of
https://github.com/gui-cs/Terminal.Gui.git
synced 2025-12-26 15:57:56 +01:00
449 lines
16 KiB
C#
449 lines
16 KiB
C#
using System;
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using System.Diagnostics;
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using System.Reflection;
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using Xunit;
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namespace Terminal.Gui.Views {
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public class ScrollBarViewTests {
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// This class enables test functions annoated with the [InitShutdown] attribute
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// to have a function called before the test function is called and after.
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//
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// This is necessary because a) Application is a singleton and Init/Shutdown must be called
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// as a pair, and b) all unit test functions should be atomic.
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[AttributeUsage (AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
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public class InitShutdown : Xunit.Sdk.BeforeAfterTestAttribute {
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public override void Before (MethodInfo methodUnderTest)
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{
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Debug.WriteLine ($"Before: {methodUnderTest.Name}");
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if (_hostView != null) {
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throw new InvalidOperationException ("After did not run.");
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}
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Application.Init (new FakeDriver (), new FakeMainLoop (() => FakeConsole.ReadKey (true)));
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var top = Application.Top;
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ScrollBarViewTests._hostView = new HostView () {
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Width = Dim.Fill (),
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Height = Dim.Fill (),
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Top = 0,
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Lines = 30,
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Left = 0,
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Cols = 100
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};
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top.Add (ScrollBarViewTests._hostView);
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}
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public override void After (MethodInfo methodUnderTest)
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{
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Debug.WriteLine ($"After: {methodUnderTest.Name}");
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ScrollBarViewTests._hostView = null;
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Application.Shutdown ();
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}
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}
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public class HostView : View {
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public int Top { get; set; }
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public int Lines { get; set; }
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public int Left { get; set; }
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public int Cols { get; set; }
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}
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private static HostView _hostView;
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private ScrollBarView _scrollBar;
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private bool _added;
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private void AddHandlers ()
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{
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if (!_added) {
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_hostView.DrawContent += _hostView_DrawContent;
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_scrollBar.ChangedPosition += _scrollBar_ChangedPosition;
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_scrollBar.OtherScrollBarView.ChangedPosition += _scrollBar_OtherScrollBarView_ChangedPosition;
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}
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_added = true;
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}
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private void RemoveHandlers ()
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{
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if (_added) {
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_hostView.DrawContent -= _hostView_DrawContent;
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_scrollBar.ChangedPosition -= _scrollBar_ChangedPosition;
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_scrollBar.OtherScrollBarView.ChangedPosition -= _scrollBar_OtherScrollBarView_ChangedPosition;
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}
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_added = false;
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}
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private void _hostView_DrawContent (Rect obj)
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{
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_scrollBar.Size = _hostView.Lines;
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_scrollBar.Position = _hostView.Top;
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_scrollBar.OtherScrollBarView.Size = _hostView.Cols;
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_scrollBar.OtherScrollBarView.Position = _hostView.Left;
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_scrollBar.Refresh ();
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}
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private void _scrollBar_ChangedPosition ()
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{
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_hostView.Top = _scrollBar.Position;
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if (_hostView.Top != _scrollBar.Position) {
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_scrollBar.Position = _hostView.Top;
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}
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_hostView.SetNeedsDisplay ();
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}
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private void _scrollBar_OtherScrollBarView_ChangedPosition ()
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{
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_hostView.Left = _scrollBar.OtherScrollBarView.Position;
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if (_hostView.Left != _scrollBar.OtherScrollBarView.Position) {
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_scrollBar.OtherScrollBarView.Position = _hostView.Left;
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}
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_hostView.SetNeedsDisplay ();
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}
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[Fact]
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[InitShutdown]
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public void Hosting_A_Null_View_To_A_ScrollBarView_Throws_ArgumentNullException ()
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{
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Assert.Throws<ArgumentNullException> ("The host parameter can't be null.",
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() => new ScrollBarView (null, true));
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Assert.Throws<ArgumentNullException> ("The host parameter can't be null.",
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() => new ScrollBarView (null, false));
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}
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[Fact]
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[InitShutdown]
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public void Hosting_A_Null_SuperView_View_To_A_ScrollBarView_Throws_ArgumentNullException ()
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{
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Assert.Throws<ArgumentNullException> ("The host SuperView parameter can't be null.",
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() => new ScrollBarView (new View (), true));
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Assert.Throws<ArgumentNullException> ("The host SuperView parameter can't be null.",
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() => new ScrollBarView (new View (), false));
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}
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[Fact]
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[InitShutdown]
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public void Hosting_Two_Vertical_ScrollBarView_Throws_ArgumentException ()
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{
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var top = new Toplevel ();
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var host = new View ();
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top.Add (host);
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var v = new ScrollBarView (host, true);
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var h = new ScrollBarView (host, true);
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Assert.Throws<ArgumentException> (null, () => v.OtherScrollBarView = h);
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Assert.Throws<ArgumentException> (null, () => h.OtherScrollBarView = v);
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}
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[Fact]
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[InitShutdown]
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public void Hosting_Two_Horizontal_ScrollBarView_Throws_ArgumentException ()
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{
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var top = new Toplevel ();
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var host = new View ();
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top.Add (host);
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var v = new ScrollBarView (host, false);
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var h = new ScrollBarView (host, false);
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Assert.Throws<ArgumentException> (null, () => v.OtherScrollBarView = h);
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Assert.Throws<ArgumentException> (null, () => h.OtherScrollBarView = v);
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}
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[Fact]
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[InitShutdown]
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public void Scrolling_With_Default_Constructor_Do_Not_Scroll ()
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{
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var sbv = new ScrollBarView {
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Position = 1
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};
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Assert.NotEqual (1, sbv.Position);
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Assert.Equal (0, sbv.Position);
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}
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[Fact]
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[InitShutdown]
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public void Hosting_A_View_To_A_ScrollBarView ()
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{
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RemoveHandlers ();
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_scrollBar = new ScrollBarView (_hostView, true);
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Assert.True (_scrollBar.IsVertical);
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Assert.False (_scrollBar.OtherScrollBarView.IsVertical);
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Assert.Equal (_scrollBar.Position, _hostView.Top);
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Assert.NotEqual (_scrollBar.Size, _hostView.Lines);
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _hostView.Left);
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Assert.NotEqual (_scrollBar.OtherScrollBarView.Size, _hostView.Cols);
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AddHandlers ();
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_hostView.SuperView.LayoutSubviews ();
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_hostView.Redraw (_hostView.Bounds);
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Assert.Equal (_scrollBar.Position, _hostView.Top);
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Assert.Equal (_scrollBar.Size, _hostView.Lines + 1);
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _hostView.Left);
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Assert.Equal (_scrollBar.OtherScrollBarView.Size, _hostView.Cols + 1);
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}
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[Fact]
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[InitShutdown]
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public void ChangedPosition_Update_The_Hosted_View ()
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{
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Hosting_A_View_To_A_ScrollBarView ();
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AddHandlers ();
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_scrollBar.Position = 2;
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Assert.Equal (_scrollBar.Position, _hostView.Top);
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_scrollBar.OtherScrollBarView.Position = 5;
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _hostView.Left);
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}
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[Fact]
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[InitShutdown]
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public void ChangedPosition_Scrolling ()
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{
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Hosting_A_View_To_A_ScrollBarView ();
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AddHandlers ();
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for (int i = 0; i < _scrollBar.Size; i++) {
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_scrollBar.Position += 1;
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Assert.Equal (_scrollBar.Position, _hostView.Top);
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}
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for (int i = _scrollBar.Size - 1; i >= 0; i--) {
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_scrollBar.Position -= 1;
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Assert.Equal (_scrollBar.Position, _hostView.Top);
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}
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for (int i = 0; i < _scrollBar.OtherScrollBarView.Size; i++) {
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_scrollBar.OtherScrollBarView.Position += i;
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _hostView.Left);
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}
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for (int i = _scrollBar.OtherScrollBarView.Size - 1; i >= 0; i--) {
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_scrollBar.OtherScrollBarView.Position -= 1;
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _hostView.Left);
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}
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}
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[Fact]
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[InitShutdown]
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public void ChangedPosition_Negative_Value ()
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{
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Hosting_A_View_To_A_ScrollBarView ();
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AddHandlers ();
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_scrollBar.Position = -20;
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Assert.Equal (0, _scrollBar.Position);
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Assert.Equal (_scrollBar.Position, _hostView.Top);
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_scrollBar.OtherScrollBarView.Position = -50;
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Assert.Equal (0, _scrollBar.OtherScrollBarView.Position);
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _hostView.Left);
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}
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[Fact]
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[InitShutdown]
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public void DrawContent_Update_The_ScrollBarView_Position ()
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{
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Hosting_A_View_To_A_ScrollBarView ();
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AddHandlers ();
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_hostView.Top = 3;
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_hostView.Redraw (_hostView.Bounds);
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Assert.Equal (_scrollBar.Position, _hostView.Top);
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_hostView.Left = 6;
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_hostView.Redraw (_hostView.Bounds);
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _hostView.Left);
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}
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[Fact]
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[InitShutdown]
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public void OtherScrollBarView_Not_Null ()
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{
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Hosting_A_View_To_A_ScrollBarView ();
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AddHandlers ();
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Assert.NotNull (_scrollBar.OtherScrollBarView);
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Assert.NotEqual (_scrollBar, _scrollBar.OtherScrollBarView);
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Assert.Equal (_scrollBar.OtherScrollBarView.OtherScrollBarView, _scrollBar);
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}
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[Fact]
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[InitShutdown]
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public void ShowScrollIndicator_Check ()
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{
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Hosting_A_View_To_A_ScrollBarView ();
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AddHandlers ();
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Assert.True (_scrollBar.ShowScrollIndicator);
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Assert.True (_scrollBar.OtherScrollBarView.ShowScrollIndicator);
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}
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[Fact]
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[InitShutdown]
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public void KeepContentAlwaysInViewport_True ()
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{
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Hosting_A_View_To_A_ScrollBarView ();
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AddHandlers ();
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Assert.Equal (80, _hostView.Bounds.Width);
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Assert.Equal (25, _hostView.Bounds.Height);
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Assert.Equal (79, _scrollBar.OtherScrollBarView.Bounds.Width);
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Assert.Equal (24, _scrollBar.Bounds.Height);
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Assert.Equal (31, _scrollBar.Size);
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Assert.Equal (101, _scrollBar.OtherScrollBarView.Size);
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Assert.True (_scrollBar.ShowScrollIndicator);
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Assert.True (_scrollBar.OtherScrollBarView.ShowScrollIndicator);
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Assert.True (_scrollBar.Visible);
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Assert.True (_scrollBar.OtherScrollBarView.Visible);
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_scrollBar.Position = 50;
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Assert.Equal (_scrollBar.Position, _scrollBar.Size - _scrollBar.Bounds.Height);
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Assert.Equal (_scrollBar.Position, _hostView.Top);
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Assert.Equal (7, _scrollBar.Position);
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Assert.Equal (7, _hostView.Top);
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Assert.True (_scrollBar.ShowScrollIndicator);
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Assert.True (_scrollBar.OtherScrollBarView.ShowScrollIndicator);
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Assert.True (_scrollBar.Visible);
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Assert.True (_scrollBar.OtherScrollBarView.Visible);
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_scrollBar.OtherScrollBarView.Position = 150;
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _scrollBar.OtherScrollBarView.Size - _scrollBar.OtherScrollBarView.Bounds.Width);
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _hostView.Left);
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Assert.Equal (22, _scrollBar.OtherScrollBarView.Position);
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Assert.Equal (22, _hostView.Left);
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Assert.True (_scrollBar.ShowScrollIndicator);
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Assert.True (_scrollBar.OtherScrollBarView.ShowScrollIndicator);
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Assert.True (_scrollBar.Visible);
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Assert.True (_scrollBar.OtherScrollBarView.Visible);
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}
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[Fact]
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[InitShutdown]
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public void KeepContentAlwaysInViewport_False ()
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{
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Hosting_A_View_To_A_ScrollBarView ();
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AddHandlers ();
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_scrollBar.KeepContentAlwaysInViewport = false;
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_scrollBar.Position = 50;
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Assert.Equal (_scrollBar.Position, _scrollBar.Size - 1);
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Assert.Equal (_scrollBar.Position, _hostView.Top);
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Assert.Equal (30, _scrollBar.Position);
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Assert.Equal (30, _hostView.Top);
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_scrollBar.OtherScrollBarView.Position = 150;
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _scrollBar.OtherScrollBarView.Size - 1);
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Assert.Equal (_scrollBar.OtherScrollBarView.Position, _hostView.Left);
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Assert.Equal (100, _scrollBar.OtherScrollBarView.Position);
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Assert.Equal (100, _hostView.Left);
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}
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[Fact]
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[InitShutdown]
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public void AutoHideScrollBars_Check ()
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{
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Hosting_A_View_To_A_ScrollBarView ();
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AddHandlers ();
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_hostView.Redraw (_hostView.Bounds);
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Assert.True (_scrollBar.ShowScrollIndicator);
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Assert.True (_scrollBar.Visible);
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Assert.Equal ("Dim.Absolute(1)", _scrollBar.Width.ToString ());
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Assert.Equal (1, _scrollBar.Bounds.Width);
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Assert.Equal ("Dim.Combine(DimView(side=Height, target=HostView()({X=0,Y=0,Width=80,Height=25}))-Dim.Absolute(1))",
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_scrollBar.Height.ToString ());
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Assert.Equal (24, _scrollBar.Bounds.Height);
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Assert.True (_scrollBar.OtherScrollBarView.ShowScrollIndicator);
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Assert.True (_scrollBar.OtherScrollBarView.Visible);
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Assert.Equal ("Dim.Combine(DimView(side=Width, target=HostView()({X=0,Y=0,Width=80,Height=25}))-Dim.Absolute(1))",
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_scrollBar.OtherScrollBarView.Width.ToString ());
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Assert.Equal (79, _scrollBar.OtherScrollBarView.Bounds.Width);
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Assert.Equal ("Dim.Absolute(1)", _scrollBar.OtherScrollBarView.Height.ToString ());
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Assert.Equal (1, _scrollBar.OtherScrollBarView.Bounds.Height);
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_hostView.Lines = 10;
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_hostView.Redraw (_hostView.Bounds);
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Assert.False (_scrollBar.ShowScrollIndicator);
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Assert.False (_scrollBar.Visible);
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Assert.Equal ("Dim.Absolute(1)", _scrollBar.Width.ToString ());
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Assert.Equal (1, _scrollBar.Bounds.Width);
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Assert.Equal ("Dim.Combine(DimView(side=Height, target=HostView()({X=0,Y=0,Width=80,Height=25}))-Dim.Absolute(1))",
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_scrollBar.Height.ToString ());
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Assert.Equal (24, _scrollBar.Bounds.Height);
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Assert.True (_scrollBar.OtherScrollBarView.ShowScrollIndicator);
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Assert.True (_scrollBar.OtherScrollBarView.Visible);
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Assert.Equal ("Dim.Combine(DimView(side=Width, target=HostView()({X=0,Y=0,Width=80,Height=25}))-Dim.Absolute(0))",
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_scrollBar.OtherScrollBarView.Width.ToString ());
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Assert.Equal (80, _scrollBar.OtherScrollBarView.Bounds.Width);
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Assert.Equal ("Dim.Absolute(1)", _scrollBar.OtherScrollBarView.Height.ToString ());
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Assert.Equal (1, _scrollBar.OtherScrollBarView.Bounds.Height);
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_hostView.Cols = 60;
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_hostView.Redraw (_hostView.Bounds);
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Assert.False (_scrollBar.ShowScrollIndicator);
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Assert.False (_scrollBar.Visible);
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Assert.Equal ("Dim.Absolute(1)", _scrollBar.Width.ToString ());
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Assert.Equal (1, _scrollBar.Bounds.Width);
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Assert.Equal ("Dim.Combine(DimView(side=Height, target=HostView()({X=0,Y=0,Width=80,Height=25}))-Dim.Absolute(1))",
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_scrollBar.Height.ToString ());
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Assert.Equal (24, _scrollBar.Bounds.Height);
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Assert.False (_scrollBar.OtherScrollBarView.ShowScrollIndicator);
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Assert.False (_scrollBar.OtherScrollBarView.Visible);
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Assert.Equal ("Dim.Combine(DimView(side=Width, target=HostView()({X=0,Y=0,Width=80,Height=25}))-Dim.Absolute(0))",
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_scrollBar.OtherScrollBarView.Width.ToString ());
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Assert.Equal (80, _scrollBar.OtherScrollBarView.Bounds.Width);
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Assert.Equal ("Dim.Absolute(1)", _scrollBar.OtherScrollBarView.Height.ToString ());
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Assert.Equal (1, _scrollBar.OtherScrollBarView.Bounds.Height);
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_hostView.Lines = 40;
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_hostView.Redraw (_hostView.Bounds);
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Assert.True (_scrollBar.ShowScrollIndicator);
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Assert.True (_scrollBar.Visible);
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Assert.Equal ("Dim.Absolute(1)", _scrollBar.Width.ToString ());
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Assert.Equal (1, _scrollBar.Bounds.Width);
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Assert.Equal ("Dim.Combine(DimView(side=Height, target=HostView()({X=0,Y=0,Width=80,Height=25}))-Dim.Absolute(0))",
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_scrollBar.Height.ToString ());
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Assert.Equal (25, _scrollBar.Bounds.Height);
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Assert.False (_scrollBar.OtherScrollBarView.ShowScrollIndicator);
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Assert.False (_scrollBar.OtherScrollBarView.Visible);
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Assert.Equal ("Dim.Combine(DimView(side=Width, target=HostView()({X=0,Y=0,Width=80,Height=25}))-Dim.Absolute(0))",
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_scrollBar.OtherScrollBarView.Width.ToString ());
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Assert.Equal (80, _scrollBar.OtherScrollBarView.Bounds.Width);
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Assert.Equal ("Dim.Absolute(1)", _scrollBar.OtherScrollBarView.Height.ToString ());
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Assert.Equal (1, _scrollBar.OtherScrollBarView.Bounds.Height);
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_hostView.Cols = 120;
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_hostView.Redraw (_hostView.Bounds);
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Assert.True (_scrollBar.ShowScrollIndicator);
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Assert.True (_scrollBar.Visible);
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Assert.Equal ("Dim.Absolute(1)", _scrollBar.Width.ToString ());
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Assert.Equal (1, _scrollBar.Bounds.Width);
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Assert.Equal ("Dim.Combine(DimView(side=Height, target=HostView()({X=0,Y=0,Width=80,Height=25}))-Dim.Absolute(1))",
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_scrollBar.Height.ToString ());
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Assert.Equal (24, _scrollBar.Bounds.Height);
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Assert.True (_scrollBar.OtherScrollBarView.ShowScrollIndicator);
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Assert.True (_scrollBar.OtherScrollBarView.Visible);
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Assert.Equal ("Dim.Combine(DimView(side=Width, target=HostView()({X=0,Y=0,Width=80,Height=25}))-Dim.Absolute(1))",
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_scrollBar.OtherScrollBarView.Width.ToString ());
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Assert.Equal (79, _scrollBar.OtherScrollBarView.Bounds.Width);
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Assert.Equal ("Dim.Absolute(1)", _scrollBar.OtherScrollBarView.Height.ToString ());
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Assert.Equal (1, _scrollBar.OtherScrollBarView.Bounds.Height);
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}
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}
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}
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