LlamaCasty/ytLive.Tests/WebView2ManagerTests.cs

using System.Drawing;
using System.Linq;
using System.Windows.Controls;
using System.Windows.Threading;
using Microsoft.Web.WebView2.Wpf;
using Xunit;
using ytLive.Models;
using ytLive.Services;

namespace ytLive.Tests;

[Collection("RealApp")]
public sealed class WebView2ManagerTests
{
    private readonly RealAppHost _app;

    public WebView2ManagerTests(RealAppHost app)
    {
        _app = app;
    }

    [Fact]
    public void WebView2_Control_Size_Tracks_Source_Dimensions()
    {
        _app.Run(() =>
        {
            var panel = new Canvas();
            var source = new Source
            {
                Type = SourceType.WebSource,
                Width = 640,
                Height = 480,
            };

            using var manager = new WebView2Manager(panel, Dispatcher.CurrentDispatcher);
            manager.Register(source);

            var webView = panel.Children.OfType<WebView2>().First();
            Assert.Equal(640.0, webView.Width);
            Assert.Equal(480.0, webView.Height);

            source.Width = 1024;
            source.Height = 768;

            Assert.Equal(1024.0, webView.Width);
            Assert.Equal(768.0, webView.Height);
        });
    }

    [Fact]
    public void WebView2_Control_Size_Ignores_Sub_One_Pixel_Drift()
    {
        _app.Run(() =>
        {
            var panel = new Canvas();
            var source = new Source
            {
                Type = SourceType.WebSource,
                Width = 640,
                Height = 480,
            };

            using var manager = new WebView2Manager(panel, Dispatcher.CurrentDispatcher);
            manager.Register(source);

            var webView = panel.Children.OfType<WebView2>().First();

            source.Width = 640.4;
            Assert.Equal(640.0, webView.Width);

            source.Height = 480.4;
            Assert.Equal(480.0, webView.Height);
        });
    }

    [Fact]
    public void WebView2_Control_Size_Minimum_Is_One()
    {
        _app.Run(() =>
        {
            var panel = new Canvas();
            var source = new Source
            {
                Type = SourceType.WebSource,
                Width = 0,
                Height = 0,
            };

            using var manager = new WebView2Manager(panel, Dispatcher.CurrentDispatcher);
            manager.Register(source);

            var webView = panel.Children.OfType<WebView2>().First();
            Assert.Equal(1.0, webView.Width);
            Assert.Equal(1.0, webView.Height);
        });
    }

    [Fact]
    public void WebView2_DefaultBackgroundColor_Is_Transparent()
    {
        _app.Run(() =>
        {
            var panel = new Canvas();
            var source = new Source
            {
                Type = SourceType.WebSource,
                Width = 640,
                Height = 480,
            };

            using var manager = new WebView2Manager(panel, Dispatcher.CurrentDispatcher);
            manager.Register(source);

            var webView = panel.Children.OfType<WebView2>().First();

            Assert.Equal(System.Drawing.Color.Transparent, webView.DefaultBackgroundColor);
        });
    }
}