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      1 # Copyright (C) 2011 Apple Inc. All rights reserved.
      2 #
      3 # Redistribution and use in source and binary forms, with or without
      4 # modification, are permitted provided that the following conditions
      5 # are met:
      6 # 1.  Redistributions of source code must retain the above copyright
      7 #     notice, this list of conditions and the following disclaimer.
      8 # 2.  Redistributions in binary form must reproduce the above copyright
      9 #     notice, this list of conditions and the following disclaimer in the
     10 #     documentation and/or other materials provided with the distribution.
     11 #
     12 # THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
     13 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     14 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     15 # DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR
     16 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     17 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     18 # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     19 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     20 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     21 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     22 
     23 import logging
     24 import unittest
     25 
     26 from webkitpy.common.system.outputcapture import OutputCapture
     27 
     28 
     29 _log = logging.getLogger(__name__)
     30 
     31 
     32 class OutputCaptureTest(unittest.TestCase):
     33     def setUp(self):
     34         self.output = OutputCapture()
     35 
     36     def log_all_levels(self):
     37         _log.info('INFO')
     38         _log.warning('WARN')
     39         _log.error('ERROR')
     40         _log.critical('CRITICAL')
     41 
     42     def assertLogged(self, expected_logs):
     43         actual_stdout, actual_stderr, actual_logs = self.output.restore_output()
     44         self.assertEqual('', actual_stdout)
     45         self.assertEqual('', actual_stderr)
     46         self.assertMultiLineEqual(expected_logs, actual_logs)
     47 
     48     def test_initial_log_level(self):
     49         self.output.capture_output()
     50         self.log_all_levels()
     51         self.assertLogged('INFO\nWARN\nERROR\nCRITICAL\n')
     52 
     53     def test_set_log_level(self):
     54         self.output.set_log_level(logging.ERROR)
     55         self.output.capture_output()
     56         self.log_all_levels()
     57         self.output.set_log_level(logging.WARN)
     58         self.log_all_levels()
     59         self.assertLogged('ERROR\nCRITICAL\nWARN\nERROR\nCRITICAL\n')
     60