Issue #9425: skip tests if a filename is not encodable

Lib/test/test_urllib2.py

@@ -597,6 +597,10 @@ class OpenerDirectorTests(unittest.TestCase):
 
 
 def sanepathname2url(path):
+    try:
+        path.encode("utf8")
+    except UnicodeEncodeError:
+        raise unittest.SkipTest("path is not encodable to utf8")
     urlpath = urllib.request.pathname2url(path)
     if os.name == "nt" and urlpath.startswith("///"):
         urlpath = urlpath[2:]