Add runner for asyncio tasks (#1405)

* add asyncio runner

* add asyncio runner

* fix for old version

* fix tests

rq/job.py

@@ -8,6 +8,7 @@ import pickle
 import warnings
 import zlib
 
+import asyncio
 from collections.abc import Iterable
 from distutils.version import StrictVersion
 from functools import partial
@@ -720,7 +721,12 @@ class Job(object):
             pipeline.hmset(self.key, mapping)
 
     def _execute(self):
-        return self.func(*self.args, **self.kwargs)
+        result = self.func(*self.args, **self.kwargs)
+        if asyncio.iscoroutine(result):
+            loop = asyncio.get_event_loop()
+            coro_result = loop.run_until_complete(result)
+            return coro_result
+        return result
 
     def get_ttl(self, default_ttl=None):
         """Returns ttl for a job that determines how long a job will be

tests/fixtures.py

@@ -32,6 +32,11 @@ def say_hello(name=None):
     return 'Hi there, %s!' % (name,)
 
 
+async def say_hello_async(name=None):
+    """A async job with a single argument and a return value."""
+    return say_hello(name)
+
+
 def say_hello_unicode(name=None):
     """A job with a single argument and a return value."""
     return text_type(say_hello(name))  # noqa

tests/test_job.py

@@ -748,6 +748,21 @@ class TestJob(RQTestCase):
 
         self.assertRaises(TypeError, queue.enqueue, fixtures.say_hello, job_id=1234)
 
+    def test_create_job_with_async(self):
+        """test creating jobs with async function"""
+        queue = Queue(connection=self.testconn)
+
+        async_job = queue.enqueue(fixtures.say_hello_async, job_id="async_job")
+        sync_job = queue.enqueue(fixtures.say_hello, job_id="sync_job")
+
+        self.assertEqual(async_job.id, "async_job")
+        self.assertEqual(sync_job.id, "sync_job")
+
+        async_task_result = async_job.perform()
+        sync_task_result = sync_job.perform()
+
+        self.assertEqual(sync_task_result, async_task_result)
+
     def test_get_call_string_unicode(self):
         """test call string with unicode keyword arguments"""
         queue = Queue(connection=self.testconn)