gui-cs.Terminal.Gui/UnitTests/View/TitleTests.cs

using Xunit.Abstractions;

//using GraphViewTests = Terminal.Gui.Views.GraphViewTests;

// Alias Console to MockConsole so we don't accidentally use Console

namespace Terminal.Gui.ViewTests;

public class TitleTests
{
    private readonly ITestOutputHelper output;
    public TitleTests (ITestOutputHelper output) { this.output = output; }

    [Fact]
    public void Set_Title_Fires_TitleChanged ()
    {
        var r = new View ();
        Assert.Equal (string.Empty, r.Title);

        string expectedOld = null;
        string expected = null;

        r.TitleChanged += (s, args) =>
                          {
                              Assert.Equal (expectedOld, args.OldTitle);
                              Assert.Equal (r.Title, args.NewTitle);
                          };

        expected = "title";
        expectedOld = r.Title;
        r.Title = expected;
        Assert.Equal (expected, r.Title);
        r.Dispose ();
    }

    [Fact]
    public void Set_Title_Fires_TitleChanging ()
    {
        var r = new View ();
        Assert.Equal (string.Empty, r.Title);

        string expectedOld = null;
        string expectedDuring = null;
        string expectedAfter = null;
        var cancel = false;

        r.TitleChanging += (s, args) =>
                           {
                               Assert.Equal (expectedOld, args.OldTitle);
                               Assert.Equal (expectedDuring, args.NewTitle);
                               args.Cancel = cancel;
                           };

        expectedOld = string.Empty;
        r.Title = expectedDuring = expectedAfter = "title";
        Assert.Equal (expectedAfter, r.Title);

        expectedOld = r.Title;
        r.Title = expectedDuring = expectedAfter = "a different title";
        Assert.Equal (expectedAfter, r.Title);

        // Now setup cancelling the change and change it back to "title"
        cancel = true;
        expectedOld = r.Title;
        r.Title = expectedDuring = "title";
        Assert.Equal (expectedAfter, r.Title);
        r.Dispose ();
    }
}