fix: Fix wrong behavior changes introduced by previous PR

Commented on dotnet#9024 (comment)
filzrev · Jul 29, 2023 · e893940 · e893940
1 parent 556d1fd
commit e893940
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/test/Docfx.Tests.Common/TestBase.cs b/test/Docfx.Tests.Common/TestBase.cs
@@ -99,7 +99,11 @@ protected static string UpdateFile(string fileName, string content, string baseF
 
     protected static string CreateDirectory(string dir, string baseFolder)
     {
-        ArgumentNullException.ThrowIfNull(dir);
+        if (string.IsNullOrEmpty(dir))
+        {
+            return string.Empty;
+        }
+
         ArgumentNullException.ThrowIfNull(baseFolder);
 
         var subDirectory = Path.Combine(baseFolder, dir);