diff --git a/eventlet/pools.py b/eventlet/pools.py
index 2be5e15..0ddbd1d 100644
--- a/eventlet/pools.py
+++ b/eventlet/pools.py
@@ -668,3 +668,7 @@ class CoroutinePool(Pool):
         while finished < index + 1:
             yield q.wait()
             finished += 1
+
+if __name__=='__main__':
+    import doctest
+    doctest.testmod()