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https://github.com/gui-cs/Terminal.Gui.git
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Adds ViewportSettings.Transparent (#3886)
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411
UnitTests/View/Draw/ClearViewportTests.cs
Normal file
411
UnitTests/View/Draw/ClearViewportTests.cs
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@@ -0,0 +1,411 @@
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#nullable enable
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using Moq;
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using Xunit.Abstractions;
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namespace Terminal.Gui.ViewTests;
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[Trait ("Category", "Output")]
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public class ClearViewportTests (ITestOutputHelper _output)
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{
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public class TestableView : View
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{
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public bool TestOnClearingViewport () { return OnClearingViewport (); }
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public int OnClearingViewportCalled { get; set; } = 0;
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public bool CancelOnClearingViewport { get; set; }
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protected override bool OnClearingViewport ()
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{
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OnClearingViewportCalled++;
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return CancelOnClearingViewport;
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}
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public int OnClearedViewportCalled { get; set; } = 0;
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protected override void OnClearedViewport ()
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{
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OnClearedViewportCalled++;
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}
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}
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[Fact]
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public void DoClearViewport_ViewportIsTransparent_DoesNotClear ()
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{
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// Arrange
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Mock<TestableView> view = new Mock<TestableView> { CallBase = true };
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view.Object.ViewportSettings = ViewportSettings.Transparent;
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// Act
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view.Object.DoClearViewport ();
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// Assert
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Assert.Equal (0, view.Object.OnClearingViewportCalled);
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Assert.Equal (0, view.Object.OnClearedViewportCalled);
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}
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[Fact]
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public void DoClearViewport_OnClearingViewportReturnsTrue_DoesNotClear ()
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{
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// Arrange
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Mock<TestableView> view = new Mock<TestableView> { CallBase = true };
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view.Object.CancelOnClearingViewport = true;
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// Act
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view.Object.DoClearViewport ();
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// Assert
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Assert.Equal (0, view.Object.OnClearedViewportCalled);
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}
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[Fact]
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public void DoClearViewport_ClearingViewportEventCancelled_DoesNotClear ()
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{
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// Arrange
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Mock<TestableView> view = new Mock<TestableView> { CallBase = true };
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view.Object.ClearingViewport += (sender, e) => e.Cancel = true;
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// Act
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view.Object.DoClearViewport ();
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// Assert
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Assert.Equal (0, view.Object.OnClearedViewportCalled);
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}
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[Fact]
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public void DoClearViewport_ClearsViewport ()
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{
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// Arrange
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Mock<TestableView> view = new Mock<TestableView> { CallBase = true };
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// Act
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view.Object.DoClearViewport ();
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// Assert
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Assert.Equal (1, view.Object.OnClearedViewportCalled);
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}
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[Fact]
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public void DoClearViewport_RaisesClearingViewportEvent ()
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{
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// Arrange
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Mock<TestableView> view = new Mock<TestableView> { CallBase = true };
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var eventRaised = false;
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view.Object.ClearingViewport += (sender, e) => eventRaised = true;
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// Act
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view.Object.DoClearViewport ();
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// Assert
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Assert.True (eventRaised);
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}
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[Fact]
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[SetupFakeDriver]
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public void Clear_ClearsEntireViewport ()
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{
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var superView = new View { Width = Dim.Fill (), Height = Dim.Fill () };
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var view = new View
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{
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Text = "X",
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X = 1, Y = 1,
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Width = 3, Height = 3,
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BorderStyle = LineStyle.Single
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};
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superView.Add (view);
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superView.BeginInit ();
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superView.EndInit ();
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superView.LayoutSubviews ();
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superView.Draw ();
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TestHelpers.AssertDriverContentsWithFrameAre (
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@"
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┌─┐
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│X│
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└─┘",
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_output);
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// On Draw exit the view is excluded from the clip, so this will do nothing.
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view.ClearViewport ();
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TestHelpers.AssertDriverContentsWithFrameAre (
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@"
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┌─┐
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│X│
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└─┘",
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_output);
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View.SetClipToScreen ();
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view.ClearViewport ();
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TestHelpers.AssertDriverContentsWithFrameAre (
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@"
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┌─┐
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│ │
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└─┘",
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_output);
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}
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[Fact]
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[SetupFakeDriver]
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public void Clear_WithClearVisibleContentOnly_ClearsVisibleContentOnly ()
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{
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var superView = new View { Width = Dim.Fill (), Height = Dim.Fill () };
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var view = new View
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{
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Text = "X",
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X = 1, Y = 1,
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Width = 3, Height = 3,
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BorderStyle = LineStyle.Single,
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ViewportSettings = ViewportSettings.ClearContentOnly
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};
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superView.Add (view);
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superView.BeginInit ();
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superView.EndInit ();
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superView.LayoutSubviews ();
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superView.Draw ();
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TestHelpers.AssertDriverContentsWithFrameAre (
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@"
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┌─┐
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│X│
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└─┘",
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_output);
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View.SetClipToScreen ();
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view.ClearViewport ();
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TestHelpers.AssertDriverContentsWithFrameAre (
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@"
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┌─┐
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│ │
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└─┘",
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_output);
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}
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[Fact]
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[AutoInitShutdown]
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public void Clear_Viewport_Can_Use_Driver_AddRune_Or_AddStr_Methods ()
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{
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var view = new FrameView { Width = Dim.Fill (), Height = Dim.Fill () };
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view.DrawingContent += (s, e) =>
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{
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Region savedClip = view.AddViewportToClip ();
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for (var row = 0; row < view.Viewport.Height; row++)
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{
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Application.Driver?.Move (1, row + 1);
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for (var col = 0; col < view.Viewport.Width; col++)
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{
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Application.Driver?.AddStr ($"{col}");
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}
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}
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View.SetClip (savedClip);
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e.Cancel = true;
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};
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var top = new Toplevel ();
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top.Add (view);
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Application.Begin (top);
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((FakeDriver)Application.Driver!).SetBufferSize (20, 10);
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var expected = @"
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┌──────────────────┐
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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└──────────────────┘
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"
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;
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Rectangle pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
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Assert.Equal (new (0, 0, 20, 10), pos);
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view.FillRect (view.Viewport);
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expected = @"
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┌──────────────────┐
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│ │
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│ │
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│ │
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│ │
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│ │
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│ │
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│ │
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│ │
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└──────────────────┘
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"
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;
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pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
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top.Dispose ();
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}
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[Fact]
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[AutoInitShutdown]
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public void Clear_Can_Use_Driver_AddRune_Or_AddStr_Methods ()
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{
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var view = new FrameView { Width = Dim.Fill (), Height = Dim.Fill () };
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view.DrawingContent += (s, e) =>
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{
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Region savedClip = view.AddViewportToClip ();
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for (var row = 0; row < view.Viewport.Height; row++)
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{
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Application.Driver?.Move (1, row + 1);
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for (var col = 0; col < view.Viewport.Width; col++)
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{
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Application.Driver?.AddStr ($"{col}");
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}
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}
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View.SetClip (savedClip);
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e.Cancel = true;
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};
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var top = new Toplevel ();
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top.Add (view);
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Application.Begin (top);
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((FakeDriver)Application.Driver!).SetBufferSize (20, 10);
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var expected = @"
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┌──────────────────┐
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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│012345678910111213│
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└──────────────────┘
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"
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;
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Rectangle pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
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Assert.Equal (new (0, 0, 20, 10), pos);
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view.FillRect (view.Viewport);
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expected = @"
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┌──────────────────┐
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│ │
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│ │
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│ │
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│ │
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│ │
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│ │
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│ │
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│ │
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└──────────────────┘
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";
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pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
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top.Dispose ();
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}
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[Theory]
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[AutoInitShutdown (configLocation: ConfigLocations.Default)]
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[InlineData (true)]
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[InlineData (false)]
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public void Clear_Does_Not_Spillover_Its_Parent (bool label)
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{
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var root = new View { Width = 20, Height = 10, ColorScheme = Colors.ColorSchemes ["Base"] };
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string text = new ('c', 100);
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View v = label
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// Label has Width/Height == AutoSize, so Frame.Size will be (100, 1)
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? new Label { Text = text }
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// TextView has Width/Height == (Dim.Fill, 1), so Frame.Size will be 20 (width of root), 1
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: new TextView { Width = Dim.Fill (), Height = 1, Text = text };
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root.Add (v);
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var top = new Toplevel ();
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top.Add (root);
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RunState runState = Application.Begin (top);
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Application.RunIteration (ref runState);
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if (label)
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{
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Assert.False (v.CanFocus);
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Assert.Equal (new (0, 0, text.Length, 1), v.Frame);
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}
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else
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{
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Assert.True (v.CanFocus);
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Assert.Equal (new (0, 0, 20, 1), v.Frame);
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}
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TestHelpers.AssertDriverContentsWithFrameAre (
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@"
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cccccccccccccccccccc",
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_output
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);
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Attribute [] attributes =
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{
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Colors.ColorSchemes ["TopLevel"].Normal,
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Colors.ColorSchemes ["Base"].Normal,
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Colors.ColorSchemes ["Base"].Focus
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};
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if (label)
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{
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TestHelpers.AssertDriverAttributesAre (
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@"
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111111111111111111110
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111111111111111111110",
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_output,
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Application.Driver,
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attributes
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);
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}
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else
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{
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TestHelpers.AssertDriverAttributesAre (
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@"
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222222222222222222220
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111111111111111111110",
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_output,
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Application.Driver,
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attributes
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);
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}
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if (label)
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{
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root.CanFocus = true;
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v.CanFocus = true;
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Assert.True (v.HasFocus);
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v.SetFocus ();
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Assert.True (v.HasFocus);
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Application.LayoutAndDraw ();
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TestHelpers.AssertDriverAttributesAre (
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@"
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222222222222222222220
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111111111111111111110",
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_output,
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Application.Driver,
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attributes
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);
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}
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Application.End (runState);
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top.Dispose ();
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}
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}
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