tests: replace unused variables by equivalent assertions

slapos/test/monitor/testrunpromise.py

@@ -292,7 +292,7 @@ class RunPromise(GenericPromise):
     self.assertTrue(os.path.exists(result_file))
     with open(result_file) as f:
       result1 = json.load(f)
-    start_date = datetime.strptime(result1['result'].pop('date'), '%Y-%m-%dT%H:%M:%S+0000')
+    self.assertTrue(datetime.strptime(result1['result'].pop('date'), '%Y-%m-%dT%H:%M:%S+0000'))
 
     expected_result = {
       u'title': u'promise_1', u'name': u'promise_1',
@@ -308,7 +308,7 @@ class RunPromise(GenericPromise):
     promise_runner.start()
     with open(result_file) as f:
       result2 = json.load(f)
-    start_date2 = datetime.strptime(result2['result'].pop('date'), '%Y-%m-%dT%H:%M:%S+0000')
+    self.assertTrue(datetime.strptime(result2['result'].pop('date'), '%Y-%m-%dT%H:%M:%S+0000'))
     self.assertTrue(result2.pop('execution-time'))
     self.assertEqual(expected_result, result2)
 
@@ -340,7 +340,7 @@ class RunPromise(GenericPromise):
 
     with open(result2_file) as f:
       result2 = json.load(f)
-    start_date2 = datetime.strptime(result2['result'].pop('date'), '%Y-%m-%dT%H:%M:%S+0000')
+    self.assertTrue(datetime.strptime(result2['result'].pop('date'), '%Y-%m-%dT%H:%M:%S+0000'))
 
     expected_result = {
       u'title': u'promise_2', u'name': u'promise_2',