forked from LBRYCommunity/lbry-sdk
54 lines
1.9 KiB
Python
54 lines
1.9 KiB
Python
from io import StringIO
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import logging
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import mock
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import unittest
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from twisted.internet import defer
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from twisted import trial
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from lbrynet import custom_logger
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from tests.util import is_android
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class TestLogger(trial.unittest.TestCase):
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def raiseError(self):
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raise Exception('terrible things happened')
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def triggerErrback(self, callback=None):
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d = defer.Deferred()
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d.addCallback(lambda _: self.raiseError())
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d.addErrback(self.log.fail(callback), 'My message')
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d.callback(None)
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return d
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def setUp(self):
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self.log = custom_logger.Logger('test')
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self.stream = StringIO()
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handler = logging.StreamHandler(self.stream)
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handler.setFormatter(logging.Formatter("%(filename)s:%(lineno)d - %(message)s"))
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self.log.addHandler(handler)
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@unittest.skipIf(is_android(),
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'Test cannot pass on Android because the tests package is compiled '
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'which results in a different method call stack')
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def test_can_log_failure(self):
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def output_lines():
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return self.stream.getvalue().split('\n')
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# the line number could change if this file gets refactored
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expected_first_line = 'test_customLogger.py:20 - My message: terrible things happened'
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# testing the entirety of the message is futile as the
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# traceback will depend on the system the test is being run on
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# but hopefully these two tests are good enough
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d = self.triggerErrback()
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d.addCallback(lambda _: self.assertEquals(expected_first_line, output_lines()[0]))
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d.addCallback(lambda _: self.assertEqual(10, len(output_lines())))
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return d
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def test_can_log_failure_with_callback(self):
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callback = mock.Mock()
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d = self.triggerErrback(callback)
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d.addCallback(lambda _: callback.assert_called_once_with(mock.ANY))
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return d
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