Make nose test runner show logging even if tests pass

问题:

I am using nosetests test.py to run unit tests:

import unittest import logging   class Test(unittest.TestCase):     def test_pass(self):         logging.getLogger('do_not_want').info('HIDE THIS')         logging.getLogger('test').info('TEST PASS')         self.assertEqual(True, True)      def test_fail(self):         logging.getLogger('do_not_want').info('HIDE THIS')         logging.getLogger('test').info('TEST FAIL')         self.assertEqual(True, False) 

When test fails, it prints out all logging info. I can use --logging-filter to filer out only some loggers:

nosetests test.py --verbosity=2 --logging-filter=test test_fail (test.Test) ... FAIL test_pass (test.Test) ... ok  ====================================================================== FAIL: test_fail (test.Test) ---------------------------------------------------------------------- Traceback (most recent call last):   File ".../test.py", line 14, in test_fail     self.assertEqual(True, False) AssertionError: True != False -------------------- >> begin captured logging << -------------------- test: INFO: TEST FAIL --------------------- >> end captured logging << ---------------------  ---------------------------------------------------------------------- Ran 2 tests in 0.001s  FAILED (failures=1) 

However, it does not show anything when tests pass.

I would like to see output of one specific logger when tests pass. I have found that I can use -s to show all stdout / stderr text which is not exactly what I need - it prints everything. I tried to play with various settings such as --nologcapture, --nocapture, or --logging-filter but I was not able to get desired effect.

回答1:

nosetests --help does not make this obvious AT ALL, but the answer is the --debug flag. This flag takes as an argument the name of the logger that you'd like to receive messages from.

Here's a slightly modified version of the OP's code:

# test.py import unittest import logging  class Test(unittest.TestCase):     def test_pass(self):         logging.getLogger('hide.this').info('HIDE THIS')         logging.getLogger('show.this').info('TEST PASS')         self.assertEqual(True, True)      def test_fail(self):         logging.getLogger('hide.this').info('HIDE THIS')         logging.getLogger('show.this').info('TEST FAIL')         self.assertEqual(True, False) 

For this example, nosetests test.py --debug=show.this should do the trick.

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