test: add helpers methods muteLogging and unmuteLogging

src/test/test_memory.py

@@ -21,8 +21,6 @@ from sat.core.i18n import _
 from sat.test import helpers
 from twisted.trial import unittest
 import traceback
-from sat.core.log import getLogger
-from logging import INFO
 from constants import Const
 from xml.dom import minidom
 
@@ -205,11 +203,9 @@ class MemoryTest(unittest.TestCase):
             @param security_limit: -1 means no security, 0 is the maximum security then the higher the less secure
             @param app: name of the frontend registering the parameters
             """
-            logger = getLogger()
-            level = logger.getEffectiveLevel()
-            logger.setLevel(INFO)
+            helpers.muteLogging()
             self.host.memory.paramsRegisterApp(xml, security_limit, app)
-            logger.setLevel(level)
+            helpers.unmuteLogging()
 
         # tests with no security level on the parameter (most secure)
         params = self._getParamXML()