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"""unittests for logilab.common.logger"""
from tempfile import mktemp
import os
import sys
from cStringIO import StringIO
from logilab.common.testlib import TestCase, unittest_main
from logilab.common.logger import *
def get_logged_messages(output):
"""strip timestamps and extract effective logged text
(log lines look like: [timestamp] message)
"""
return [line.split(']')[-1].strip() for line in output.splitlines()]
class LoggerTC(TestCase):
def test_defaultlogging(self):
# redirect stdout so that we can test
stdout_backup = sys.stdout
sys.stdout = StringIO()
# make default logger
logger = make_logger()
logger.log(message='hello')
logger.log(message='world')
output = sys.stdout.getvalue()
msg = get_logged_messages(output)
# restore stdout
sys.stdout = stdout_backup
self.assertEquals(msg, ['hello', 'world'])
def test_filelogging(self):
filename = mktemp(dir='/tmp')
# make file logger
logger = make_logger(method='file', output=filename)
logger.log(message='hello')
logger.log(message='world')
# make sure everything gets flushed (testing purpose)
logger.output.flush()
output = open(filename).read() #os.read(descr, 300)
# close everything correcly
#os.close(descr)
logger.output.close()
# remove file
os.remove(filename)
self.assertEquals(get_logged_messages(output), ['hello', 'world'])
if __name__ == '__main__':
unittest_main()
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