Fix run.py version control detection when used outide of OpenCV build

diff --git a/modules/ts/misc/run.py b/modules/ts/misc/run.py
index f2c213e..09db7dc 100644 (file)
--- a/modules/ts/misc/run.py
+++ b/modules/ts/misc/run.py
@@ -339,6 +339,8 @@ class RunInfo(object):
         self.tests = self.getAvailableTestApps()
 
     def getVCVersion(self, root_path):
+        if not root_path:
+            return None
         if os.path.isdir(os.path.join(root_path, ".svn")):
             return self.getSvnVersion(root_path)
         elif os.path.isdir(os.path.join(root_path, ".git")):