gui-cs.Terminal.Gui/UnitTests/Views/CheckBoxTests.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xunit;
using Xunit.Abstractions;

namespace Terminal.Gui.ViewsTests;
public class CheckboxTests {
	readonly ITestOutputHelper _output;

	public CheckboxTests (ITestOutputHelper output)
	{
		this._output = output;
	}

	[Fact]
	public void Constructors_Defaults ()
	{
		var ckb = new CheckBox ();
		Assert.True (ckb.AutoSize);
		Assert.False (ckb.Checked);
		Assert.False (ckb.AllowNullChecked);
		Assert.Equal (string.Empty, ckb.Text);
		Assert.Equal ($"{CM.Glyphs.UnChecked} ", ckb.TextFormatter.Text);
		Assert.True (ckb.CanFocus);
		Assert.Equal (new Rect (0, 0, 2, 1), ckb.Frame);

		ckb = new CheckBox ("Test", true);
		Assert.True (ckb.AutoSize);
		Assert.True (ckb.Checked);
		Assert.False (ckb.AllowNullChecked);
		Assert.Equal ("Test", ckb.Text);
		Assert.Equal ($"{CM.Glyphs.Checked} Test", ckb.TextFormatter.Text);
		Assert.True (ckb.CanFocus);
		Assert.Equal (new Rect (0, 0, 6, 1), ckb.Frame);

		ckb = new CheckBox (1, 2, "Test");
		Assert.True (ckb.AutoSize);
		Assert.False (ckb.Checked);
		Assert.False (ckb.AllowNullChecked);
		Assert.Equal ("Test", ckb.Text);
		Assert.Equal ($"{CM.Glyphs.UnChecked} Test", ckb.TextFormatter.Text);
		Assert.True (ckb.CanFocus);
		Assert.Equal (new Rect (1, 2, 6, 1), ckb.Frame);

		ckb = new CheckBox (3, 4, "Test", true);
		Assert.True (ckb.AutoSize);
		Assert.True (ckb.Checked);
		Assert.False (ckb.AllowNullChecked);
		Assert.Equal ("Test", ckb.Text);
		Assert.Equal ($"{CM.Glyphs.Checked} Test", ckb.TextFormatter.Text);
		Assert.True (ckb.CanFocus);
		Assert.Equal (new Rect (3, 4, 6, 1), ckb.Frame);
	}

	[Fact]
	[AutoInitShutdown]
	public void KeyBindings_Command ()
	{
		var toggled = false;
		CheckBox ckb = new CheckBox ();
		ckb.Toggled += (s, e) => toggled = true;
		Application.Top.Add (ckb);
		Application.Begin (Application.Top);

		Assert.False (ckb.Checked);
		Assert.False (toggled);
		Assert.Equal (KeyCode.Null, ckb.HotKey);

		ckb.Text = "Test";
		Assert.Equal (KeyCode.T, ckb.HotKey);
		Assert.True (Application.Top.NewKeyDownEvent (new (KeyCode.T)));
		Assert.True (ckb.Checked);
		Assert.True (toggled);

		ckb.Text = "T_est";
		toggled = false;
		Assert.Equal (KeyCode.E, ckb.HotKey);
		Assert.True (Application.Top.NewKeyDownEvent (new (KeyCode.E | KeyCode.AltMask)));
		Assert.True (toggled);
		Assert.False (ckb.Checked);

		toggled = false;
		Assert.Equal (KeyCode.E, ckb.HotKey);
		Assert.True (Application.Top.NewKeyDownEvent (new (KeyCode.E)));
		Assert.True (toggled);
		Assert.True (ckb.Checked);

		toggled = false;
		Assert.True (Application.Top.NewKeyDownEvent (new ((KeyCode)' ')));
		Assert.True (toggled);
		Assert.False (ckb.Checked);

		toggled = false;
		Assert.True (Application.Top.NewKeyDownEvent (new (KeyCode.Space)));
		Assert.True (toggled);
		Assert.True (ckb.Checked);
		Assert.True (ckb.AutoSize);

		Application.Refresh ();

		var expected = @$"
{CM.Glyphs.Checked} Test
";

		var pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 6, 1), pos);
	}

	[Fact, AutoInitShutdown]
	public void AutoSize_StaysVisible ()
	{
		var checkBox = new CheckBox () {
			X = 1,
			Y = Pos.Center (),
			Text = "Check this out 你"
		};
		var win = new Window () {
			Width = Dim.Fill (),
			Height = Dim.Fill (),
			Title = "Test Demo 你"
		};
		win.Add (checkBox);
		Application.Top.Add (win);

		Assert.False (checkBox.IsInitialized);

		var runstate = Application.Begin (Application.Top);
		((FakeDriver)Application.Driver).SetBufferSize (30, 5);

		Assert.True (checkBox.IsInitialized);
		Assert.Equal (new Rect (1, 1, 19, 1), checkBox.Frame);
		Assert.Equal ("Check this out 你", checkBox.Text);
		Assert.Equal ($"{CM.Glyphs.UnChecked} Check this out 你", checkBox.TextFormatter.Text);
		Assert.True (checkBox.AutoSize);

		checkBox.Checked = true;
		Assert.Equal ($"{CM.Glyphs.Checked} Check this out 你", checkBox.TextFormatter.Text);

		checkBox.AutoSize = false;
		// It isn't auto-size so the height is guaranteed by the SetMinWidthHeight
		checkBox.Text = "Check this out 你 changed";
		var firstIteration = false;
		Application.RunIteration (ref runstate, ref firstIteration);
		// BUGBUG - v2 - Autosize is busted; disabling tests for now
		Assert.Equal (new Rect (1, 1, 19, 1), checkBox.Frame);
		var expected = @"
┌┤Test Demo 你├──────────────┐
│                            │
│ ☑ Check this out 你        │
│                            │
└────────────────────────────┘";

		var pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 5), pos);

		checkBox.Width = 19;
		// It isn't auto-size so the height is guaranteed by the SetMinWidthHeight
		checkBox.Text = "Check this out 你 changed";
		Application.RunIteration (ref runstate, ref firstIteration);
		Assert.False (checkBox.AutoSize);
		Assert.Equal (new Rect (1, 1, 19, 1), checkBox.Frame);
		expected = @"
┌┤Test Demo 你├──────────────┐
│                            │
│ ☑ Check this out 你        │
│                            │
└────────────────────────────┘";

		pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 5), pos);

		checkBox.AutoSize = true;
		Application.RunIteration (ref runstate, ref firstIteration);
		Assert.Equal (new Rect (1, 1, 27, 1), checkBox.Frame);
		expected = @"
┌┤Test Demo 你├──────────────┐
│                            │
│ ☑ Check this out 你 changed│
│                            │
└────────────────────────────┘";

		pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 5), pos);
	}

	[Fact, AutoInitShutdown]
	public void TextAlignment_Left ()
	{
		var checkBox = new CheckBox () {
			X = 1,
			Y = Pos.Center (),
			Text = "Check this out 你",
			AutoSize = false,
			Width = 25
		};
		var win = new Window () {
			Width = Dim.Fill (),
			Height = Dim.Fill (),
			Title = "Test Demo 你"
		};
		win.Add (checkBox);
		Application.Top.Add (win);

		Application.Begin (Application.Top);
		((FakeDriver)Application.Driver).SetBufferSize (30, 5);

		Assert.Equal (TextAlignment.Left, checkBox.TextAlignment);
		Assert.Equal (new Rect (1, 1, 25, 1), checkBox.Frame);
		Assert.Equal (new Size (25, 1), checkBox.TextFormatter.Size);

		var expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│ {CM.Glyphs.UnChecked} Check this out 你        │
│                            │
└────────────────────────────┘
";

		var pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 5), pos);

		checkBox.Checked = true;
		Application.Refresh ();
		expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│ {CM.Glyphs.Checked} Check this out 你        │
│                            │
└────────────────────────────┘
";

		pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 5), pos);
	}

	[Fact, AutoInitShutdown]
	public void TextAlignment_Centered ()
	{
		var checkBox = new CheckBox () {
			X = 1,
			Y = Pos.Center (),
			Text = "Check this out 你",
			TextAlignment = TextAlignment.Centered,
			AutoSize = false,
			Width = 25
		};
		var win = new Window () {
			Width = Dim.Fill (),
			Height = Dim.Fill (),
			Title = "Test Demo 你"
		};
		win.Add (checkBox);
		Application.Top.Add (win);

		Application.Begin (Application.Top);
		((FakeDriver)Application.Driver).SetBufferSize (30, 5);

		Assert.Equal (TextAlignment.Centered, checkBox.TextAlignment);
		Assert.Equal (new Rect (1, 1, 25, 1), checkBox.Frame);
		Assert.Equal (new Size (25, 1), checkBox.TextFormatter.Size);
		Assert.False (checkBox.AutoSize);

		var expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│    {CM.Glyphs.UnChecked} Check this out 你     │
│                            │
└────────────────────────────┘
";

		var pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 5), pos);

		checkBox.Checked = true;
		Application.Refresh ();
		expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│    {CM.Glyphs.Checked} Check this out 你     │
│                            │
└────────────────────────────┘
";

		pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 5), pos);
	}

	[Fact, AutoInitShutdown]
	public void TextAlignment_Justified ()
	{
		var checkBox1 = new CheckBox () {
			X = 1,
			Y = Pos.Center (),
			Text = "Check first out 你",
			TextAlignment = TextAlignment.Justified,
			AutoSize = false,
			Width = 25
		};
		var checkBox2 = new CheckBox () {
			X = 1,
			Y = Pos.Bottom (checkBox1),
			Text = "Check second out 你",
			TextAlignment = TextAlignment.Justified,
			AutoSize = false,
			Width = 25
		};
		var win = new Window () {
			Width = Dim.Fill (),
			Height = Dim.Fill (),
			Title = "Test Demo 你"
		};
		win.Add (checkBox1, checkBox2);
		Application.Top.Add (win);

		Application.Begin (Application.Top);
		((FakeDriver)Application.Driver).SetBufferSize (30, 6);

		Assert.Equal (TextAlignment.Justified, checkBox1.TextAlignment);
		Assert.Equal (new Rect (1, 1, 25, 1), checkBox1.Frame);
		Assert.Equal (new Size (25, 1), checkBox1.TextFormatter.Size);
		Assert.Equal (TextAlignment.Justified, checkBox2.TextAlignment);
		Assert.Equal (new Rect (1, 2, 25, 1), checkBox2.Frame);
		Assert.Equal (new Size (25, 1), checkBox2.TextFormatter.Size);

		var expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│ {CM.Glyphs.UnChecked}   Check  first  out  你  │
│ {CM.Glyphs.UnChecked}  Check  second  out  你  │
│                            │
└────────────────────────────┘
";

		var pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 6), pos);

		checkBox1.Checked = true;
		Assert.Equal (new Rect (1, 1, 25, 1), checkBox1.Frame);
		//Assert.Equal (new Size (25, 1), checkBox1.TextFormatter.Size);
		checkBox2.Checked = true;
		Assert.Equal (new Rect (1, 2, 25, 1), checkBox2.Frame);
		//Assert.Equal (new Size (25, 1), checkBox2.TextFormatter.Size);
		Application.Refresh ();
		expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│ {CM.Glyphs.Checked}   Check  first  out  你  │
│ {CM.Glyphs.Checked}  Check  second  out  你  │
│                            │
└────────────────────────────┘
";

		pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 6), pos);
	}

	[Fact, AutoInitShutdown]
	public void TextAlignment_Right ()
	{
		var checkBox = new CheckBox () {
			X = 1,
			Y = Pos.Center (),
			Text = "Check this out 你",
			TextAlignment = TextAlignment.Right,
			AutoSize = false,
			Width = 25
		};
		var win = new Window () {
			Width = Dim.Fill (),
			Height = Dim.Fill (),
			Title = "Test Demo 你"
		};
		win.Add (checkBox);
		Application.Top.Add (win);

		Application.Begin (Application.Top);
		((FakeDriver)Application.Driver).SetBufferSize (30, 5);

		Assert.Equal (TextAlignment.Right, checkBox.TextAlignment);
		Assert.Equal (new Rect (1, 1, 25, 1), checkBox.Frame);
		Assert.Equal (new Size (25, 1), checkBox.TextFormatter.Size);
		Assert.False (checkBox.AutoSize);

		var expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│       Check this out 你 {CM.Glyphs.UnChecked}  │
│                            │
└────────────────────────────┘
";

		var pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 5), pos);

		checkBox.Checked = true;
		Application.Refresh ();
		expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│       Check this out 你 {CM.Glyphs.Checked}  │
│                            │
└────────────────────────────┘
";

		pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Assert.Equal (new Rect (0, 0, 30, 5), pos);
	}

	[Fact, AutoInitShutdown]
	public void AutoSize_Stays_True_AnchorEnd_Without_HotKeySpecifier ()
	{
		var checkBox = new CheckBox () {
			Y = Pos.Center (),
			Text = "Check this out 你"
		};
		checkBox.X = Pos.AnchorEnd () - Pos.Function (() => checkBox.GetSizeNeededForTextWithoutHotKey ().Width);

		var win = new Window () {
			Width = Dim.Fill (),
			Height = Dim.Fill (),
			Title = "Test Demo 你"
		};
		win.Add (checkBox);
		Application.Top.Add (win);

		Assert.True (checkBox.AutoSize);

		Application.Begin (Application.Top);
		((FakeDriver)Application.Driver).SetBufferSize (30, 5);
		var expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│         {CM.Glyphs.UnChecked} Check this out 你│
│                            │
└────────────────────────────┘
";

		TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);

		Assert.True (checkBox.AutoSize);
		checkBox.Text = "Check this out 你 changed";
		Assert.True (checkBox.AutoSize);
		Application.Refresh ();
		expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│ {CM.Glyphs.UnChecked} Check this out 你 changed│
│                            │
└────────────────────────────┘
";

		TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
	}

	[Fact, AutoInitShutdown]
	public void AutoSize_Stays_True_AnchorEnd_With_HotKeySpecifier ()
	{
		var checkBox = new CheckBox () {
			Y = Pos.Center (),
			Text = "C_heck this out 你"
		};
		checkBox.X = Pos.AnchorEnd () - Pos.Function (() => checkBox.GetSizeNeededForTextWithoutHotKey ().Width);

		var win = new Window () {
			Width = Dim.Fill (),
			Height = Dim.Fill (),
			Title = "Test Demo 你"
		};
		win.Add (checkBox);
		Application.Top.Add (win);

		Assert.True (checkBox.AutoSize);

		Application.Begin (Application.Top);
		((FakeDriver)Application.Driver).SetBufferSize (30, 5);
		var expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│         {CM.Glyphs.UnChecked} Check this out 你│
│                            │
└────────────────────────────┘
";

		TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);

		Assert.True (checkBox.AutoSize);
		checkBox.Text = "Check this out 你 changed";
		Assert.True (checkBox.AutoSize);
		Application.Refresh ();
		expected = @$"
┌┤Test Demo 你├──────────────┐
│                            │
│ {CM.Glyphs.UnChecked} Check this out 你 changed│
│                            │
└────────────────────────────┘
";

		TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
	}

	[Fact, AutoInitShutdown]
	public void AllowNullChecked_Get_Set ()
	{
		var checkBox = new CheckBox ("Check this out 你");
		var top = Application.Top;
		top.Add (checkBox);
		Application.Begin (top);

		Assert.False (checkBox.Checked);
		Assert.True (checkBox.NewKeyDownEvent (new (KeyCode.Space)));
		Assert.True (checkBox.Checked);
		Assert.True (checkBox.MouseEvent (new MouseEvent () { X = 0, Y = 0, Flags = MouseFlags.Button1Clicked }));
		Assert.False (checkBox.Checked);

		checkBox.AllowNullChecked = true;
		Assert.True (checkBox.NewKeyDownEvent (new (KeyCode.Space)));
		Assert.Null (checkBox.Checked);
		Application.Refresh ();
		TestHelpers.AssertDriverContentsWithFrameAre (@$"
{CM.Glyphs.NullChecked} Check this out 你", _output);
		Assert.True (checkBox.MouseEvent (new MouseEvent () { X = 0, Y = 0, Flags = MouseFlags.Button1Clicked }));
		Assert.True (checkBox.Checked);
		Assert.True (checkBox.NewKeyDownEvent (new (KeyCode.Space)));
		Assert.False (checkBox.Checked);
		Assert.True (checkBox.MouseEvent (new MouseEvent () { X = 0, Y = 0, Flags = MouseFlags.Button1Clicked }));
		Assert.Null (checkBox.Checked);

		checkBox.AllowNullChecked = false;
		Assert.False (checkBox.Checked);
	}
}