test__coros_queue: use queue's waiting() method

greentest/test__coros_queue.py

@@ -1,12 +1,7 @@
 from greentest import LimitedTestCase
 from unittest import main
-from eventlet import api, coros
+from eventlet import api, coros, proc
 
-def waiting(queue):
-    try:
-        return len(queue.sem._waiters)
-    except AttributeError:
-        return len(queue.sem.lower_bound._waiters)
 
 class TestQueue(LimitedTestCase):
 
@@ -184,10 +179,10 @@ class TestQueue(LimitedTestCase):
         e1 = coros.event()
         api.spawn(do_wait, q, e1)
         api.sleep(0)
-        self.assertEquals(1, waiting(q))
+        self.assertEquals(1, q.waiting())
         q.send('hi')
         api.sleep(0)
-        self.assertEquals(0, waiting(q))
+        self.assertEquals(0, q.waiting())
         self.assertEquals('hi', e1.wait())
         self.assertEquals(0, waiting(q))