245 lines
9.3 KiB
Python
245 lines
9.3 KiB
Python
#
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# Copyright 2012 Facebook
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import contextlib
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import glob
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import logging
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import os
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import re
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import subprocess
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import sys
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import tempfile
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import unittest
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import warnings
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from tornado.escape import utf8
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from tornado.log import LogFormatter, define_logging_options, enable_pretty_logging
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from tornado.options import OptionParser
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from tornado.util import basestring_type
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@contextlib.contextmanager
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def ignore_bytes_warning():
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with warnings.catch_warnings():
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warnings.simplefilter("ignore", category=BytesWarning)
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yield
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class LogFormatterTest(unittest.TestCase):
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# Matches the output of a single logging call (which may be multiple lines
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# if a traceback was included, so we use the DOTALL option)
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LINE_RE = re.compile(
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b"(?s)\x01\\[E [0-9]{6} [0-9]{2}:[0-9]{2}:[0-9]{2} log_test:[0-9]+\\]\x02 (.*)"
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)
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def setUp(self):
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self.formatter = LogFormatter(color=False)
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# Fake color support. We can't guarantee anything about the $TERM
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# variable when the tests are run, so just patch in some values
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# for testing. (testing with color off fails to expose some potential
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# encoding issues from the control characters)
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self.formatter._colors = {logging.ERROR: u"\u0001"}
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self.formatter._normal = u"\u0002"
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# construct a Logger directly to bypass getLogger's caching
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self.logger = logging.Logger("LogFormatterTest")
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self.logger.propagate = False
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self.tempdir = tempfile.mkdtemp()
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self.filename = os.path.join(self.tempdir, "log.out")
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self.handler = self.make_handler(self.filename)
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self.handler.setFormatter(self.formatter)
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self.logger.addHandler(self.handler)
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def tearDown(self):
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self.handler.close()
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os.unlink(self.filename)
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os.rmdir(self.tempdir)
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def make_handler(self, filename):
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# Base case: default setup without explicit encoding.
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# In python 2, supports arbitrary byte strings and unicode objects
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# that contain only ascii. In python 3, supports ascii-only unicode
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# strings (but byte strings will be repr'd automatically).
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return logging.FileHandler(filename)
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def get_output(self):
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with open(self.filename, "rb") as f:
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line = f.read().strip()
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m = LogFormatterTest.LINE_RE.match(line)
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if m:
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return m.group(1)
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else:
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raise Exception("output didn't match regex: %r" % line)
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def test_basic_logging(self):
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self.logger.error("foo")
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self.assertEqual(self.get_output(), b"foo")
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def test_bytes_logging(self):
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with ignore_bytes_warning():
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# This will be "\xe9" on python 2 or "b'\xe9'" on python 3
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self.logger.error(b"\xe9")
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self.assertEqual(self.get_output(), utf8(repr(b"\xe9")))
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def test_utf8_logging(self):
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with ignore_bytes_warning():
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self.logger.error(u"\u00e9".encode("utf8"))
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if issubclass(bytes, basestring_type):
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# on python 2, utf8 byte strings (and by extension ascii byte
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# strings) are passed through as-is.
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self.assertEqual(self.get_output(), utf8(u"\u00e9"))
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else:
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# on python 3, byte strings always get repr'd even if
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# they're ascii-only, so this degenerates into another
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# copy of test_bytes_logging.
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self.assertEqual(self.get_output(), utf8(repr(utf8(u"\u00e9"))))
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def test_bytes_exception_logging(self):
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try:
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raise Exception(b"\xe9")
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except Exception:
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self.logger.exception("caught exception")
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# This will be "Exception: \xe9" on python 2 or
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# "Exception: b'\xe9'" on python 3.
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output = self.get_output()
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self.assertRegexpMatches(output, br"Exception.*\\xe9")
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# The traceback contains newlines, which should not have been escaped.
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self.assertNotIn(br"\n", output)
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class UnicodeLogFormatterTest(LogFormatterTest):
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def make_handler(self, filename):
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# Adding an explicit encoding configuration allows non-ascii unicode
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# strings in both python 2 and 3, without changing the behavior
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# for byte strings.
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return logging.FileHandler(filename, encoding="utf8")
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def test_unicode_logging(self):
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self.logger.error(u"\u00e9")
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self.assertEqual(self.get_output(), utf8(u"\u00e9"))
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class EnablePrettyLoggingTest(unittest.TestCase):
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def setUp(self):
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super().setUp()
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self.options = OptionParser()
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define_logging_options(self.options)
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self.logger = logging.Logger("tornado.test.log_test.EnablePrettyLoggingTest")
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self.logger.propagate = False
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def test_log_file(self):
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tmpdir = tempfile.mkdtemp()
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try:
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self.options.log_file_prefix = tmpdir + "/test_log"
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enable_pretty_logging(options=self.options, logger=self.logger)
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self.assertEqual(1, len(self.logger.handlers))
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self.logger.error("hello")
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self.logger.handlers[0].flush()
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filenames = glob.glob(tmpdir + "/test_log*")
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self.assertEqual(1, len(filenames))
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with open(filenames[0]) as f:
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self.assertRegexpMatches(f.read(), r"^\[E [^]]*\] hello$")
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finally:
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for handler in self.logger.handlers:
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handler.flush()
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handler.close()
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for filename in glob.glob(tmpdir + "/test_log*"):
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os.unlink(filename)
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os.rmdir(tmpdir)
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def test_log_file_with_timed_rotating(self):
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tmpdir = tempfile.mkdtemp()
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try:
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self.options.log_file_prefix = tmpdir + "/test_log"
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self.options.log_rotate_mode = "time"
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enable_pretty_logging(options=self.options, logger=self.logger)
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self.logger.error("hello")
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self.logger.handlers[0].flush()
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filenames = glob.glob(tmpdir + "/test_log*")
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self.assertEqual(1, len(filenames))
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with open(filenames[0]) as f:
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self.assertRegexpMatches(f.read(), r"^\[E [^]]*\] hello$")
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finally:
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for handler in self.logger.handlers:
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handler.flush()
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handler.close()
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for filename in glob.glob(tmpdir + "/test_log*"):
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os.unlink(filename)
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os.rmdir(tmpdir)
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def test_wrong_rotate_mode_value(self):
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try:
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self.options.log_file_prefix = "some_path"
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self.options.log_rotate_mode = "wrong_mode"
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self.assertRaises(
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ValueError,
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enable_pretty_logging,
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options=self.options,
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logger=self.logger,
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)
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finally:
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for handler in self.logger.handlers:
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handler.flush()
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handler.close()
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class LoggingOptionTest(unittest.TestCase):
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"""Test the ability to enable and disable Tornado's logging hooks."""
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def logs_present(self, statement, args=None):
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# Each test may manipulate and/or parse the options and then logs
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# a line at the 'info' level. This level is ignored in the
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# logging module by default, but Tornado turns it on by default
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# so it is the easiest way to tell whether tornado's logging hooks
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# ran.
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IMPORT = "from tornado.options import options, parse_command_line"
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LOG_INFO = 'import logging; logging.info("hello")'
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program = ";".join([IMPORT, statement, LOG_INFO])
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proc = subprocess.Popen(
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[sys.executable, "-c", program] + (args or []),
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT,
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)
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stdout, stderr = proc.communicate()
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self.assertEqual(proc.returncode, 0, "process failed: %r" % stdout)
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return b"hello" in stdout
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def test_default(self):
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self.assertFalse(self.logs_present("pass"))
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def test_tornado_default(self):
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self.assertTrue(self.logs_present("parse_command_line()"))
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def test_disable_command_line(self):
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self.assertFalse(self.logs_present("parse_command_line()", ["--logging=none"]))
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def test_disable_command_line_case_insensitive(self):
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self.assertFalse(self.logs_present("parse_command_line()", ["--logging=None"]))
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def test_disable_code_string(self):
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self.assertFalse(
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self.logs_present('options.logging = "none"; parse_command_line()')
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)
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def test_disable_code_none(self):
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self.assertFalse(
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self.logs_present("options.logging = None; parse_command_line()")
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)
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def test_disable_override(self):
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# command line trumps code defaults
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self.assertTrue(
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self.logs_present(
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"options.logging = None; parse_command_line()", ["--logging=info"]
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)
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)
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