ILSpy/ILSpy.Tests/SessionSettingsTests.cs

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using Avalonia;
using Avalonia.Controls;

using AwesomeAssertions;

using ILSpy;

using NUnit.Framework;

namespace ICSharpCode.ILSpy.Tests;

// SessionSettings persists window bounds + active list to <SessionSettings> in ILSpy.xml.
// If serialization and deserialization don't round-trip, a user's saved window position /
// active list silently resets on every launch — and the bug is invisible until they
// actually restart with a non-default layout. Round-tripping is the contract.
[TestFixture]
public class SessionSettingsTests
{
	[Test]
	public void Save_then_Load_round_trips_all_fields()
	{
		var original = new SessionSettings {
			ActiveAssemblyList = "my-list",
			WindowState = WindowState.Maximized,
			WindowPosition = new PixelPoint(200, 300),
			WindowSize = new Size(1024, 768),
		};

		var xml = original.SaveToXml();

		var loaded = new SessionSettings();
		loaded.LoadFromXml(xml);

		loaded.ActiveAssemblyList.Should().Be("my-list");
		loaded.WindowState.Should().Be(WindowState.Maximized);
		loaded.WindowPosition.Should().Be(new PixelPoint(200, 300));
		loaded.WindowSize.Should().Be(new Size(1024, 768));
	}

	[Test]
	public void Save_then_Load_round_trips_ActiveTreeViewPath()
	{
		var original = new SessionSettings {
			ActiveTreeViewPath = ["My.Assembly.dll", "MyNamespace.MyType", "M:MyMethod"],
		};

		var xml = original.SaveToXml();

		var loaded = new SessionSettings();
		loaded.LoadFromXml(xml);

		loaded.ActiveTreeViewPath.Should().Equal("My.Assembly.dll", "MyNamespace.MyType", "M:MyMethod");
	}
}