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1# Copyright (C) 2010 Chris Jerdonek (cjerdonek@webkit.org)
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"""Unit tests for logutils.py."""
24
25import logging
26import os
27import unittest
28
29from webkitpy.common.system.logtesting import LogTesting
30from webkitpy.common.system.logtesting import TestLogStream
31from webkitpy.common.system import logutils
32
33
34class GetLoggerTest(unittest.TestCase):
35
36    """Tests get_logger()."""
37
38    def test_get_logger_in_webkitpy(self):
39        logger = logutils.get_logger(__file__)
40        self.assertEquals(logger.name, "webkitpy.common.system.logutils_unittest")
41
42    def test_get_logger_not_in_webkitpy(self):
43        # Temporarily change the working directory so that we
44        # can test get_logger() for a path outside of webkitpy.
45        working_directory = os.getcwd()
46        root_dir = "/"
47        os.chdir(root_dir)
48
49        logger = logutils.get_logger("/Tools/Scripts/test-webkitpy")
50        self.assertEquals(logger.name, "test-webkitpy")
51
52        logger = logutils.get_logger("/Tools/Scripts/test-webkitpy.py")
53        self.assertEquals(logger.name, "test-webkitpy")
54
55        os.chdir(working_directory)
56
57
58class ConfigureLoggingTestBase(unittest.TestCase):
59
60    """Base class for configure_logging() unit tests."""
61
62    def _logging_level(self):
63        raise Exception("Not implemented.")
64
65    def setUp(self):
66        log_stream = TestLogStream(self)
67
68        # Use a logger other than the root logger or one prefixed with
69        # "webkitpy." so as not to conflict with test-webkitpy logging.
70        logger = logging.getLogger("unittest")
71
72        # Configure the test logger not to pass messages along to the
73        # root logger.  This prevents test messages from being
74        # propagated to loggers used by test-webkitpy logging (e.g.
75        # the root logger).
76        logger.propagate = False
77
78        logging_level = self._logging_level()
79        self._handlers = logutils.configure_logging(logging_level=logging_level,
80                                                    logger=logger,
81                                                    stream=log_stream)
82        self._log = logger
83        self._log_stream = log_stream
84
85    def tearDown(self):
86        """Reset logging to its original state.
87
88        This method ensures that the logging configuration set up
89        for a unit test does not affect logging in other unit tests.
90
91        """
92        logger = self._log
93        for handler in self._handlers:
94            logger.removeHandler(handler)
95
96    def _assert_log_messages(self, messages):
97        """Assert that the logged messages equal the given messages."""
98        self._log_stream.assertMessages(messages)
99
100
101class ConfigureLoggingTest(ConfigureLoggingTestBase):
102
103    """Tests configure_logging() with the default logging level."""
104
105    def _logging_level(self):
106        return None
107
108    def test_info_message(self):
109        self._log.info("test message")
110        self._assert_log_messages(["unittest: [INFO] test message\n"])
111
112    def test_below_threshold_message(self):
113        # We test the boundary case of a logging level equal to 19.
114        # In practice, we will probably only be calling log.debug(),
115        # which corresponds to a logging level of 10.
116        level = logging.INFO - 1  # Equals 19.
117        self._log.log(level, "test message")
118        self._assert_log_messages([])
119
120    def test_two_messages(self):
121        self._log.info("message1")
122        self._log.info("message2")
123        self._assert_log_messages(["unittest: [INFO] message1\n",
124                                   "unittest: [INFO] message2\n"])
125
126
127class ConfigureLoggingCustomLevelTest(ConfigureLoggingTestBase):
128
129    """Tests configure_logging() with a custom logging level."""
130
131    _level = 36
132
133    def _logging_level(self):
134        return self._level
135
136    def test_logged_message(self):
137        self._log.log(self._level, "test message")
138        self._assert_log_messages(["unittest: [Level 36] test message\n"])
139
140    def test_below_threshold_message(self):
141        self._log.log(self._level - 1, "test message")
142        self._assert_log_messages([])
143