From: Ben Darnell <ben@bendarnell.com>
Date: Sun, 21 Jan 2018 20:27:34 +0000 (-0500)
Subject: gen_test: Add test for asyncio.gather
X-Git-Tag: v5.0.0~13^2~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ec7dca027f6333ce07d7eae4124586536ec7f8a;p=thirdparty%2Ftornado.git

gen_test: Add test for asyncio.gather

This is additional verification that the asyncio integration is
working as intended.

Fixes #1684
---

diff --git a/tornado/test/gen_test.py b/tornado/test/gen_test.py
index ff7d9770a..6850af81c 100644
--- a/tornado/test/gen_test.py
+++ b/tornado/test/gen_test.py
@@ -1069,6 +1069,20 @@ class GenCoroutineTest(AsyncTestCase):
         actual = repr(coro)
         self.assertIn(expected, actual)
 
+    @unittest.skipIf(asyncio is None, "asyncio module not present")
+    @gen_test
+    def test_asyncio_gather(self):
+        # This demonstrates that tornado coroutines can be understood
+        # by asyncio (This failed prior to Tornado 5.0).
+        @gen.coroutine
+        def f():
+            yield gen.moment
+            raise gen.Return(1)
+
+        ret = yield asyncio.gather(f(), f())
+        self.assertEqual(ret, [1, 1])
+        self.finished = True
+
 
 class GenSequenceHandler(RequestHandler):
     @asynchronous