Move global IOLoop hack to helper

tests/helper.py

@@ -1,8 +1,12 @@
-from nvchecker.get_version import get_version
+from tornado.ioloop import IOLoop
 import tornado.testing
+from nvchecker.get_version import get_version
 
 
 class ExternalVersionTestCase(tornado.testing.AsyncTestCase):
+    def get_new_ioloop(self):
+        return IOLoop.instance()
+
     def sync_get_version(self, name, config):
         def get_version_callback(name, version):
             self.stop(version)

tests/test_cmd.py

@@ -1,10 +1,6 @@
-from tornado.ioloop import IOLoop
 from tests.helper import ExternalVersionTestCase
 
 
 class CMDTest(ExternalVersionTestCase):
-    def get_new_ioloop(self):
-        return IOLoop.instance()
-
     def test_cmd(self):
         self.assertEqual(self.sync_get_version("example", {"cmd": "echo Meow"}), "Meow")