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python3.2  3.2.2
Public Member Functions | Public Attributes | Static Public Attributes
test.test_logging.MemoryHandlerTest Class Reference
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List of all members.

Public Member Functions

def setUp
def tearDown
def test_flush
def assert_log_lines
def next_message

Public Attributes

 mem_hdlr
 mem_logger
 saved_handlers
 saved_handler_list
 saved_loggers
 saved_level_names
 logger_states
 logger1
 logger2
 root_logger
 original_logging_level
 stream
 root_hdlr
 root_formatter

Static Public Attributes

string expected_log_pat = r"^[\w.]+ -> ([\w]+): ([\d]+)$"
string log_format = "%(name)s -> %(levelname)s: %(message)s"
int message_num = 0

Detailed Description

Tests for the MemoryHandler.

Definition at line 497 of file test_logging.py.


Member Function Documentation

def test.test_logging.BaseTest.assert_log_lines (   self,
  expected_values,
  stream = None 
) [inherited]
Match the collected log lines against the regular expression
self.expected_log_pat, and compare the extracted group values to
the expected_values list of tuples.

Definition at line 131 of file test_logging.py.

00131 
00132     def assert_log_lines(self, expected_values, stream=None):
00133         """Match the collected log lines against the regular expression
00134         self.expected_log_pat, and compare the extracted group values to
00135         the expected_values list of tuples."""
00136         stream = stream or self.stream
00137         pat = re.compile(self.expected_log_pat)
00138         try:
00139             stream.reset()
00140             actual_lines = stream.readlines()
00141         except AttributeError:
00142             # StringIO.StringIO lacks a reset() method.
00143             actual_lines = stream.getvalue().splitlines()
00144         self.assertEqual(len(actual_lines), len(expected_values),
00145                           '%s vs. %s' % (actual_lines, expected_values))
00146         for actual, expected in zip(actual_lines, expected_values):
00147             match = pat.search(actual)
00148             if not match:
00149                 self.fail("Log line does not match expected pattern:\n" +
00150                             actual)
00151             self.assertEqual(tuple(match.groups()), expected)
00152         s = stream.read()
00153         if s:
00154             self.fail("Remaining output at end of log stream:\n" + s)

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def test.test_logging.BaseTest.next_message (   self) [inherited]
Generate a message consisting solely of an auto-incrementing
integer.

Definition at line 155 of file test_logging.py.

00155 
00156     def next_message(self):
00157         """Generate a message consisting solely of an auto-incrementing
00158         integer."""
00159         self.message_num += 1
00160         return "%d" % self.message_num
00161 

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Setup the default logging stream to an internal StringIO instance,
so that we can examine log output as we want.

Reimplemented from test.test_logging.BaseTest.

Definition at line 504 of file test_logging.py.

00504 
00505     def setUp(self):
00506         BaseTest.setUp(self)
00507         self.mem_hdlr = logging.handlers.MemoryHandler(10, logging.WARNING,
00508                                                         self.root_hdlr)
00509         self.mem_logger = logging.getLogger('mem')
00510         self.mem_logger.propagate = 0
00511         self.mem_logger.addHandler(self.mem_hdlr)

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Remove our logging stream, and restore the original logging
level.

Reimplemented from test.test_logging.BaseTest.

Definition at line 512 of file test_logging.py.

00512 
00513     def tearDown(self):
00514         self.mem_hdlr.close()
00515         BaseTest.tearDown(self)

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Definition at line 516 of file test_logging.py.

00516 
00517     def test_flush(self):
00518         # The memory handler flushes to its target handler based on specific
00519         #  criteria (message count and message level).
00520         self.mem_logger.debug(self.next_message())
00521         self.assert_log_lines([])
00522         self.mem_logger.info(self.next_message())
00523         self.assert_log_lines([])
00524         # This will flush because the level is >= logging.WARNING
00525         self.mem_logger.warn(self.next_message())
00526         lines = [
00527             ('DEBUG', '1'),
00528             ('INFO', '2'),
00529             ('WARNING', '3'),
00530         ]
00531         self.assert_log_lines(lines)
00532         for n in (4, 14):
00533             for i in range(9):
00534                 self.mem_logger.debug(self.next_message())
00535             self.assert_log_lines(lines)
00536             # This will flush because it's the 10th message since the last
00537             #  flush.
00538             self.mem_logger.debug(self.next_message())
00539             lines = lines + [('DEBUG', str(i)) for i in range(n, n + 10)]
00540             self.assert_log_lines(lines)
00541 
00542         self.mem_logger.debug(self.next_message())
00543         self.assert_log_lines(lines)
00544 

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Member Data Documentation

string test.test_logging.MemoryHandlerTest.expected_log_pat = r"^[\w.]+ -> ([\w]+): ([\d]+)$" [static]

Reimplemented from test.test_logging.BaseTest.

Definition at line 502 of file test_logging.py.

string test.test_logging.BaseTest.log_format = "%(name)s -> %(levelname)s: %(message)s" [static, inherited]

Definition at line 59 of file test_logging.py.

Definition at line 83 of file test_logging.py.

Definition at line 84 of file test_logging.py.

Definition at line 73 of file test_logging.py.

Definition at line 506 of file test_logging.py.

Definition at line 508 of file test_logging.py.

Definition at line 61 of file test_logging.py.

Definition at line 87 of file test_logging.py.

Definition at line 92 of file test_logging.py.

Definition at line 91 of file test_logging.py.

Definition at line 86 of file test_logging.py.

Definition at line 70 of file test_logging.py.

Definition at line 69 of file test_logging.py.

Definition at line 72 of file test_logging.py.

Definition at line 71 of file test_logging.py.

Definition at line 89 of file test_logging.py.


The documentation for this class was generated from the following file: