Fix tests: Make CFG singleton in runtime not at imports loading

tracim/test.ini

 # email_to = you@yourdomain.com
 smtp_server = localhost
 error_email_from = turbogears@localhost
+radicale.server.port = 15232
+radicale.client.port = 15232
 
 [server:main]
 use = egg:gearbox#wsgiref
 [app:radicale]
 sqlalchemy.url = postgresql://postgres:dummy@127.0.0.1:5432/tracim_test?client_encoding=utf8
 radicale.server.filesystem.folder = /tmp/tracim_tests_radicale_fs
-radicale.server.port = 15232
-radicale.client.port = 15232
 use = config:development.ini
 
 # Add additional test specific configuration options as necessary.

tracim/tracim/tests/functional/test_calendar.py

 
 
 class TestCalendar(BaseTestCalendar):
+    def setUp(self):
+        super().setUp()
+        time.sleep(3)  # TODO - 20160606 - Bastien: sleep to wait ...
+        # ... radicale daemon started. We should lock something somewhere !
+
     def test_func__radicale_connectivity__ok__nominal_case(self):
         radicale_base_url = self._get_base_url()
 
         try:
-            time.sleep(2)  # TODO - 20160606 - Bastien: sleep to wait ...
-            # ... radicale daemon started. We should lock something somewhere !
             response = requests.get(radicale_base_url)
             eq_(response.status_code, 401, 'Radicale http response is 401')
         except ConnectionError:

tracim/tracim/tests/library/test_helpers.py

 
 from tracim.tests import TestStandard
 
-config = CFG.get_instance()
-
 
 class TestHelpers(TestStandard):
 
     def test_is_item_still_editable(self):
+        config = CFG.get_instance()
         item = DictLikeClass()
 
         config.DATA_UPDATE_ALLOWED_DURATION = 0