Issue #8716: Add temporary code for 2.7 to help diagnose buildbot failure.

Lib/lib-tk/test/runtktests.py

@@ -25,6 +25,20 @@ def check_tk_availability():
         return
 
     if sys.platform == 'darwin':
+
+        # ** temporary test code for issue8716 **
+        try:
+            import MacOS
+            wma = MacOS.WMAvailable()
+            print >> test.test_support.get_original_stdout(), \
+                '\tcheck_tk_availability -- WMAvailable returned %r' % wma
+        except ImportError:
+            print >> test.test_support.get_original_stdout(), \
+                '\tcheck_tk_availability -- could not import MacOS'
+        if not wma:
+            raise unittest.SkipTest("Window manager is not available")
+        # ** end of temporary test code for issue8716 **
+
         # The Aqua Tk implementations on OS X can abort the process if
         # being called in an environment where a window server connection
         # cannot be made, for instance when invoked by a buildbot or ssh