changeset:   96744:a9d38701536d
branch:      3.5
parent:      96742:5d1e16be1af6
user:        Yury Selivanov <yselivanov@sprymix.com>
date:        Wed Jul 01 12:29:55 2015 -0400
files:       Lib/test/test_coroutines.py
description:
Issue #24400: Add one more unittest for CoroutineType.__await__


diff -r 5d1e16be1af6 -r a9d38701536d Lib/test/test_coroutines.py
--- a/Lib/test/test_coroutines.py	Wed Jul 01 11:31:13 2015 -0400
+++ b/Lib/test/test_coroutines.py	Wed Jul 01 12:29:55 2015 -0400
@@ -519,6 +519,40 @@
 
             run_async(foo())
 
+    def test_await_14(self):
+        class Wrapper:
+            # Forces the interpreter to use CoroutineType.__await__
+            def __init__(self, coro):
+                assert coro.__class__ is types.CoroutineType
+                self.coro = coro
+            def __await__(self):
+                return self.coro.__await__()
+
+        class FutureLike:
+            def __await__(self):
+                return (yield)
+
+        class Marker(Exception):
+            pass
+
+        async def coro1():
+            try:
+                return await FutureLike()
+            except ZeroDivisionError:
+                raise Marker
+        async def coro2():
+            return await Wrapper(coro1())
+
+        c = coro2()
+        c.send(None)
+        with self.assertRaisesRegex(StopIteration, 'spam'):
+            c.send('spam')
+
+        c = coro2()
+        c.send(None)
+        with self.assertRaises(Marker):
+            c.throw(ZeroDivisionError)
+
     def test_with_1(self):
         class Manager:
             def __init__(self, name):