Fix tests.

Author: karliss

tests/test_app.py

@@ -30,6 +30,11 @@ def close():
 @pytest.mark.skipif(not is_pyqtgraph_available,
                     reason='pyqtgraph is not available')
 def test_app():
+    # main app will fail to start if there already is a reactor
+    import sys
+    if "twisted.internet.reactor" in sys.modules:
+        sys.modules.pop("twisted.internet.reactor")
+
     # Must close programatically
     Timer(10, lambda: deferred_call(close)).start()
     from inkcut.app import main