Try to fix core dump in travis

Ref #282

test/test_spy_widget.py

@@ -34,8 +34,6 @@
 from alignak_app.qobjects.events.spy import SpyQWidget
 from alignak_app.qobjects.events.spy_list import SpyQListWidget
 
-init_event_widget()
-
 
 class TestSpyQWidgets(unittest2.TestCase):
     """
@@ -53,6 +51,8 @@ def setUpClass(cls):
     def test_initialize(self):
         """Initialize SpyQWidget"""
 
+        init_event_widget()
+
         under_test = SpyQWidget()
 
         self.assertIsNotNone(under_test.spy_list_widget)
@@ -68,6 +68,8 @@ def test_initialize(self):
     def test_remove_event(self):
         """Remove Spy Event Item"""
 
+        init_event_widget()
+
         under_test = SpyQWidget()
         under_test.initialize()
 
@@ -167,6 +169,8 @@ def test_send_spy_events(self):
     def test_manage_host_events_with_wrong_row(self):
         """Manage Host Events With Wrong Row"""
 
+        init_event_widget()
+
         under_test = SpyQWidget()
         under_test.initialize()
 
@@ -208,6 +212,8 @@ def test_manage_host_events_with_wrong_row(self):
     def test_manage_host_events_with_valid_rows(self):
         """Manage Host Events With Valid Rows"""
 
+        init_event_widget()
+
         under_test = SpyQWidget()
         under_test.initialize()