Issue #19572: More silently skipped tests explicitly skipped.
diff --git a/Lib/test/test_grp.py b/Lib/test/test_grp.py
index 62d2baf..d31e39c 100644
--- a/Lib/test/test_grp.py
+++ b/Lib/test/test_grp.py
@@ -26,8 +26,10 @@
         for e in entries:
             self.check_value(e)
 
+    def test_values_extended(self):
+        entries = grp.getgrall()
         if len(entries) > 1000:  # Huge group file (NIS?) -- skip the rest
-            return
+            self.skipTest('huge group file, extended test skipped')
 
         for e in entries:
             e2 = grp.getgrgid(e.gr_gid)