asyncio, tulip issue 203: Add _FlowControlMixin.get_write_buffer_limits() method

2 files changed, 5 insertions, 0 deletions

diff --git a/Lib/asyncio/transports.py b/Lib/asyncio/transports.py
index 5f674f99d7..3caf853f9e 100644
--- a/Lib/asyncio/transports.py
+++ b/Lib/asyncio/transports.py
@@ -273,6 +273,9 @@ class _FlowControlMixin(Transport):
                     'protocol': self._protocol,
                 })
 
+    def get_write_buffer_limits(self):
+        return (self._low_water, self._high_water)
+
     def _set_write_buffer_limits(self, high=None, low=None):
         if high is None:
             if low is None:
diff --git a/Lib/test/test_asyncio/test_transports.py b/Lib/test/test_asyncio/test_transports.py
index cfbdf3e9bc..5be1b7bf89 100644
--- a/Lib/test/test_asyncio/test_transports.py
+++ b/Lib/test/test_asyncio/test_transports.py
@@ -79,9 +79,11 @@ class TransportTests(unittest.TestCase):
 
         transport.set_write_buffer_limits(high=1024, low=128)
         self.assertFalse(transport._protocol_paused)
+        self.assertEqual(transport.get_write_buffer_limits(), (128, 1024))
 
         transport.set_write_buffer_limits(high=256, low=128)
         self.assertTrue(transport._protocol_paused)
+        self.assertEqual(transport.get_write_buffer_limits(), (128, 256))
 
 
 if __name__ == '__main__':