delete the test log if test passes

tests/core/test_json_logging.py

@@ -1,5 +1,5 @@
 from hamcrest import assert_that, has_entries
-# import os
+import os
 import logging
 import json
 from backdrop.core import log_handler
@@ -14,18 +14,17 @@ def setUp(self):
         self.logger = self.app.logger
         self.app.config['LOG_LEVEL'] = logging.DEBUG
 
-    # def tearDown(self):
-        # delete the log
-        # os.remove('log/json_test.log.json')
-
     def test_json_log_written_when_logger_called(self):
 
         log_handler.set_up_logging(self.app, 'json_test', 'json_test')
-        # handler = logging.FileHandler('/var/log/myapp.log')
         self.logger.info('Writing out JSON formatted logs m8')
+
         with open('log/json_test.log.json') as log_file:
             data = json.loads(log_file.readlines()[-1])
 
         assert_that(data, has_entries({
             '@message': 'Writing out JSON formatted logs m8'
         }))
+
+        # Only remove file if assertion passes
+        os.remove('log/json_test.log.json')