Make it possible to avoid using the global loop

pytest_asyncio/plugin.py

@@ -45,7 +45,7 @@ def pytest_pyfunc_call(pyfuncitem):
             testargs = {arg: funcargs[arg]
                         for arg in pyfuncitem._fixtureinfo.argnames}
             event_loop.run_until_complete(
-                asyncio.async(pyfuncitem.obj(**testargs)))
+                asyncio.async(pyfuncitem.obj(**testargs), loop=event_loop))
             return True
 
 

tests/test_non_global_loop.py

@@ -0,0 +1,33 @@
+import asyncio
+
+import pytest
+
+
+def setup_module(module):
+    asyncio.set_event_loop(None)
+
+
+def teardown_module(module):
+    # restore the default policy
+    asyncio.set_event_loop_policy(None)
+
+
+@pytest.fixture
+def event_loop(request):
+    loop = asyncio.new_event_loop()
+    request.addfinalizer(loop.close)
+    return loop
+
+
+@asyncio.coroutine
+def example_coroutine():
+    return 42
+
+
+@pytest.mark.asyncio
+def test_asyncio_marker_with_non_global_loop(event_loop):
+    with pytest.raises(RuntimeError):
+        _ = asyncio.get_event_loop()
+
+    result = yield from example_coroutine()
+