Merge pull request dotnet#9236 from drewnoakes/cache-repo-root-path

Cache repo root path

tests/Microsoft.VisualStudio.ProjectSystem.Managed.UnitTests/Utilities/RepoUtil.cs

@@ -4,6 +4,8 @@ namespace Microsoft.VisualStudio.Utilities
 {
  internal static class RepoUtil
  {
+ private static string? _root;
+
  /// <summary>
  /// Gets the absolute path to the checked out location of this repo.
  /// </summary>
@@ -12,18 +14,22 @@ internal static class RepoUtil
  /// </remarks>
  public static string FindRepoRootPath()
  {
- // Start with this DLL's location
- string path = typeof(RepoUtil).Assembly.Location;
-
- // Walk up the tree until we find the 'artifacts' folder
- while (!Path.GetFileName(path).Equals("artifacts", StringComparisons.Paths))
+ if (_root is null)
  {
- path = Path.GetDirectoryName(path);
+ // Start with this DLL's location
+ string path = typeof(RepoUtil).Assembly.Location;
+
+ // Walk up the tree until we find the 'artifacts' folder
+ while (!Path.GetFileName(path).Equals("artifacts", StringComparisons.Paths))
+ {
+ path = Path.GetDirectoryName(path);
+ }
+
+ // Go up one more level
+ _root = Path.GetDirectoryName(path);
  }
 
- // Go up one more level
- path = Path.GetDirectoryName(path);
- return path;
+ return _root;
  }
  }
 }