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-rw-r--r--src/leap/util/tests/test_streamtologger.py122
1 files changed, 122 insertions, 0 deletions
diff --git a/src/leap/util/tests/test_streamtologger.py b/src/leap/util/tests/test_streamtologger.py
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+++ b/src/leap/util/tests/test_streamtologger.py
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+# -*- coding: utf-8 -*-
+# test_streamtologger.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+"""
+tests for streamtologger
+"""
+
+try:
+ import unittest2 as unittest
+except ImportError:
+ import unittest
+
+import logging
+import sys
+
+from leap.util.streamtologger import StreamToLogger
+from leap.common.testing.basetest import BaseLeapTest
+
+
+class SimpleLogHandler(logging.Handler):
+ """
+ The simplest log handler that allows to check if the log was
+ delivered to the handler correctly.
+ """
+ def __init__(self):
+ logging.Handler.__init__(self)
+ self._last_log = ""
+ self._last_log_level = ""
+
+ def emit(self, record):
+ self._last_log = record.getMessage()
+ self._last_log_level = record.levelno
+
+ def get_last_log(self):
+ """
+ Returns the last logged message by this handler.
+
+ :return: the last logged message.
+ :rtype: str
+ """
+ return self._last_log
+
+ def get_last_log_level(self):
+ """
+ Returns the level of the last logged message by this handler.
+
+ :return: the last logged level.
+ :rtype: str
+ """
+ return self._last_log_level
+
+
+class StreamToLoggerTest(BaseLeapTest):
+ """
+ StreamToLogger's tests.
+
+ NOTE: we may need to find a way to test the use case that an exception
+ is raised. I couldn't catch the output of an exception because the
+ test failed if some exception is raised.
+ """
+ def setUp(self):
+ # Create the logger
+ level = logging.DEBUG
+ self.logger = logging.getLogger(name='test')
+ self.logger.setLevel(level)
+
+ # Simple log handler
+ self.handler = SimpleLogHandler()
+ self.logger.addHandler(self.handler)
+
+ # Preserve original values
+ self._sys_stdout = sys.stdout
+ self._sys_stderr = sys.stderr
+
+ # Create the handler
+ sys.stdout = StreamToLogger(self.logger, logging.DEBUG)
+ sys.stderr = StreamToLogger(self.logger, logging.ERROR)
+
+ def tearDown(self):
+ # Restore original values
+ sys.stdout = self._sys_stdout
+ sys.stderr = self._sys_stderr
+
+ def test_logger_starts_empty(self):
+ self.assertEqual(self.handler.get_last_log(), '')
+
+ def test_standard_output(self):
+ message = 'Test string'
+ print message
+
+ log = self.handler.get_last_log()
+ log_level = self.handler.get_last_log_level()
+
+ self.assertEqual(log, message)
+ self.assertEqual(log_level, logging.DEBUG)
+
+ def test_standard_error(self):
+ message = 'Test string'
+ sys.stderr.write(message)
+
+ log_level = self.handler.get_last_log_level()
+ log = self.handler.get_last_log()
+
+ self.assertEqual(log, message)
+ self.assertEqual(log_level, logging.ERROR)
+
+
+if __name__ == "__main__":
+ unittest.main(verbosity=2)