Disable CecilSourceInformationProvider when instructed by TESTINGPLATFORM_EXPERIMENTAL_VSTEST_RUNSETTINGS

bradwilson · bradwilson · commit 8a1c6c2a8b04 · 2025-05-01T11:11:51.000-07:00
diff --git a/src/xunit.v3.runner.common/Frameworks/CecilSourceInformationProvider.cs b/src/xunit.v3.runner.common/Frameworks/CecilSourceInformationProvider.cs
@@ -39,6 +39,9 @@ public sealed class CecilSourceInformationProvider : ISourceInformationProvider
 	/// <param name="assemblyFileName">The test assembly filename</param>
 	public static ISourceInformationProvider Create(string? assemblyFileName)
 	{
+		if (!RunSettingsUtility.CollectSourceInformation)
+			return NullSourceInformationProvider.Instance;
+
 		var folder = Path.GetDirectoryName(assemblyFileName);
 		if (folder is null)
 			return NullSourceInformationProvider.Instance;
diff --git a/src/xunit.v3.runner.common/Utility/RunSettingsUtility.cs b/src/xunit.v3.runner.common/Utility/RunSettingsUtility.cs
@@ -0,0 +1,38 @@
+using System;
+using System.Collections;
+using System.Linq;
+using System.Xml.Linq;
+using System.Xml.XPath;
+
+namespace Xunit.Runner.Common;
+
+internal static class RunSettingsUtility
+{
+	static bool? collectSourceInformation;
+
+	public static bool CollectSourceInformation
+	{
+		get
+		{
+			if (!collectSourceInformation.HasValue)
+			{
+				try
+				{
+					var runSettings = Environment.GetEnvironmentVariable("TESTINGPLATFORM_EXPERIMENTAL_VSTEST_RUNSETTINGS");
+					if (runSettings is not null)
+					{
+						var doc = XDocument.Parse(runSettings);
+						if (doc.Root?.XPathEvaluate("/RunSettings/RunConfiguration/CollectSourceInformation") is IEnumerable enumerable)
+							if (enumerable.OfType<XElement>().FirstOrDefault() is XElement element)
+								collectSourceInformation = bool.Parse(element.Value);
+					}
+				}
+				catch { }
+
+				collectSourceInformation ??= true;
+			}
+
+			return collectSourceInformation.Value;
+		}
+	}
+}
