ILSpy/ILSpy.Tests.Windows/WindowsSystemFontTests.cs

// Copyright (c) 2026 Christoph Wille
//
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using ICSharpCode.ILSpy.Util;

using NUnit.Framework;

namespace ICSharpCode.ILSpy.Tests.Windows;

/// <summary>
/// Verifies the NONCLIENTMETRICS message-font reader used to follow the Windows system UI font.
/// The exact values depend on the machine (the accessibility "Text size" setting scales them),
/// so the assertions only pin down what must hold everywhere: a face name is present and the
/// size is a sane DIP value (metrics are requested at 96 DPI, so 12 on a default install,
/// larger when text scaling is active).
/// </summary>
[TestFixture]
public class WindowsSystemFontTests
{
	[Test]
	public void MessageFontIsReadable()
	{
		bool available = WindowsSystemFont.TryGetMessageFont(out var faceName, out var fontSize);

		Assert.That(available, Is.True);
		Assert.That(faceName, Is.Not.Null.And.Not.Empty);
		Assert.That(fontSize, Is.InRange(9.0, 48.0));
	}
}