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# Copyright (C) 2005-2011 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
# "weren't nothing promised to you. do i look like i got a promise face?"
"""Tests for trace library"""
from cStringIO import StringIO
import errno
import os
import re
import sys
import tempfile
from bzrlib import (
debug,
errors,
trace,
)
from bzrlib.tests import features, TestCaseInTempDir, TestCase
from bzrlib.trace import (
mutter, mutter_callsite, report_exception,
set_verbosity_level, get_verbosity_level, is_quiet, is_verbose, be_quiet,
pop_log_file,
push_log_file,
_rollover_trace_maybe,
show_error,
)
def _format_exception():
"""Format an exception as it would normally be displayed to the user"""
buf = StringIO()
report_exception(sys.exc_info(), buf)
return buf.getvalue()
class TestTrace(TestCase):
def test_format_sys_exception(self):
# Test handling of an internal/unexpected error that probably
# indicates a bug in bzr. The details of the message may vary
# depending on whether apport is available or not. See test_crash for
# more.
try:
raise NotImplementedError, "time travel"
except NotImplementedError:
pass
err = _format_exception()
self.assertEqualDiff(err.splitlines()[0],
'bzr: ERROR: exceptions.NotImplementedError: time travel')
self.assertContainsRe(err,
'Bazaar has encountered an internal error.')
def test_format_interrupt_exception(self):
try:
raise KeyboardInterrupt()
except KeyboardInterrupt:
# XXX: Some risk that a *real* keyboard interrupt won't be seen
pass
msg = _format_exception()
self.assertTrue(len(msg) > 0)
self.assertEqualDiff(msg, 'bzr: interrupted\n')
def test_format_memory_error(self):
try:
raise MemoryError()
except MemoryError:
pass
msg = _format_exception()
self.assertEquals(msg,
"bzr: out of memory\nUse -Dmem_dump to dump memory to a file.\n")
def test_format_mem_dump(self):
self.requireFeature(features.meliae)
debug.debug_flags.add('mem_dump')
try:
raise MemoryError()
except MemoryError:
pass
msg = _format_exception()
self.assertStartsWith(msg,
"bzr: out of memory\nMemory dumped to ")
def test_format_os_error(self):
try:
os.rmdir('nosuchfile22222')
except OSError, e:
e_str = str(e)
msg = _format_exception()
# Linux seems to give "No such file" but Windows gives "The system
# cannot find the file specified".
self.assertEqual('bzr: ERROR: %s\n' % (e_str,), msg)
def test_format_io_error(self):
try:
file('nosuchfile22222')
except IOError:
pass
msg = _format_exception()
# Even though Windows and Linux differ for 'os.rmdir', they both give
# 'No such file' for open()
# However it now gets translated so we can not test for a specific message
self.assertContainsRe(msg,
r'^bzr: ERROR: \[Errno .*\] .*nosuchfile')
def test_format_pywintypes_error(self):
self.requireFeature(features.pywintypes)
import pywintypes, win32file
try:
win32file.RemoveDirectory('nosuchfile22222')
except pywintypes.error:
pass
msg = _format_exception()
# GZ 2010-05-03: Formatting for pywintypes.error is basic, a 3-tuple
# with errno, function name, and locale error message
self.assertContainsRe(msg,
r"^bzr: ERROR: \(2, 'RemoveDirectory[AW]?', .*\)")
def test_format_sockets_error(self):
try:
import socket
sock = socket.socket()
sock.send("This should fail.")
except socket.error:
pass
msg = _format_exception()
self.assertNotContainsRe(msg,
r"Traceback (most recent call last):")
def test_format_unicode_error(self):
try:
raise errors.BzrCommandError(u'argument foo\xb5 does not exist')
except errors.BzrCommandError:
pass
msg = _format_exception()
def test_format_exception(self):
"""Short formatting of bzr exceptions"""
try:
raise errors.NotBranchError('wibble')
except errors.NotBranchError:
pass
msg = _format_exception()
self.assertTrue(len(msg) > 0)
self.assertEqualDiff(msg, 'bzr: ERROR: Not a branch: \"wibble\".\n')
def test_report_external_import_error(self):
"""Short friendly message for missing system modules."""
try:
import ImaginaryModule
except ImportError, e:
pass
else:
self.fail("somehow succeeded in importing %r" % ImaginaryModule)
msg = _format_exception()
self.assertEqual(msg,
'bzr: ERROR: No module named ImaginaryModule\n'
'You may need to install this Python library separately.\n')
def test_report_import_syntax_error(self):
try:
raise ImportError("syntax error")
except ImportError, e:
pass
msg = _format_exception()
self.assertContainsRe(msg,
r'Bazaar has encountered an internal error')
def test_trace_unicode(self):
"""Write Unicode to trace log"""
self.log(u'the unicode character for benzene is \N{BENZENE RING}')
log = self.get_log()
self.assertContainsRe(log, "the unicode character for benzene is")
def test_trace_argument_unicode(self):
"""Write a Unicode argument to the trace log"""
mutter(u'the unicode character for benzene is %s', u'\N{BENZENE RING}')
log = self.get_log()
self.assertContainsRe(log, 'the unicode character')
def test_trace_argument_utf8(self):
"""Write a Unicode argument to the trace log"""
mutter(u'the unicode character for benzene is %s',
u'\N{BENZENE RING}'.encode('utf-8'))
log = self.get_log()
self.assertContainsRe(log, 'the unicode character')
def test_report_broken_pipe(self):
try:
raise IOError(errno.EPIPE, 'broken pipe foofofo')
except IOError, e:
msg = _format_exception()
self.assertEquals(msg, "bzr: broken pipe\n")
else:
self.fail("expected error not raised")
def assertLogStartsWith(self, log, string):
"""Like assertStartsWith, but skips the log timestamp."""
self.assertContainsRe(log,
'^\\d+\\.\\d+ ' + re.escape(string))
def test_mutter_callsite_1(self):
"""mutter_callsite can capture 1 level of stack frame."""
mutter_callsite(1, "foo %s", "a string")
log = self.get_log()
# begin with the message
self.assertLogStartsWith(log, 'foo a string\nCalled from:\n')
# should show two frame: this frame and the one above
self.assertContainsRe(log,
'test_trace\\.py", line \\d+, in test_mutter_callsite_1\n')
# this frame should be the final one
self.assertEndsWith(log, ' "a string")\n')
def test_mutter_callsite_2(self):
"""mutter_callsite can capture 2 levels of stack frame."""
mutter_callsite(2, "foo %s", "a string")
log = self.get_log()
# begin with the message
self.assertLogStartsWith(log, 'foo a string\nCalled from:\n')
# should show two frame: this frame and the one above
self.assertContainsRe(log,
'test_trace.py", line \d+, in test_mutter_callsite_2\n')
# this frame should be the final one
self.assertEndsWith(log, ' "a string")\n')
def test_mutter_never_fails(self):
# Even if the decode/encode stage fails, mutter should not
# raise an exception
# This test checks that mutter doesn't fail; the current behaviour
# is that it doesn't fail *and writes non-utf8*.
mutter(u'Writing a greek mu (\xb5) works in a unicode string')
mutter('But fails in an ascii string \xb5')
mutter('and in an ascii argument: %s', '\xb5')
log = self.get_log()
self.assertContainsRe(log, 'Writing a greek mu')
self.assertContainsRe(log, "But fails in an ascii string")
# However, the log content object does unicode replacement on reading
# to let it get unicode back where good data has been written. So we
# have to do a replaceent here as well.
self.assertContainsRe(log, "ascii argument: \xb5".decode('utf8',
'replace'))
def test_show_error(self):
show_error('error1')
show_error(u'error2 \xb5 blah')
show_error('arg: %s', 'blah')
show_error('arg2: %(key)s', {'key':'stuff'})
try:
raise Exception("oops")
except:
show_error('kwarg', exc_info=True)
log = self.get_log()
self.assertContainsRe(log, 'error1')
self.assertContainsRe(log, u'error2 \xb5 blah')
self.assertContainsRe(log, 'arg: blah')
self.assertContainsRe(log, 'arg2: stuff')
self.assertContainsRe(log, 'kwarg')
self.assertContainsRe(log, 'Traceback \\(most recent call last\\):')
self.assertContainsRe(log, 'File ".*test_trace.py", line .*, in test_show_error')
self.assertContainsRe(log, 'raise Exception\\("oops"\\)')
self.assertContainsRe(log, 'Exception: oops')
def test_push_log_file(self):
"""Can push and pop log file, and this catches mutter messages.
This is primarily for use in the test framework.
"""
tmp1 = tempfile.NamedTemporaryFile()
tmp2 = tempfile.NamedTemporaryFile()
try:
memento1 = push_log_file(tmp1)
mutter("comment to file1")
try:
memento2 = push_log_file(tmp2)
try:
mutter("comment to file2")
finally:
pop_log_file(memento2)
mutter("again to file1")
finally:
pop_log_file(memento1)
# the files were opened in binary mode, so should have exactly
# these bytes. and removing the file as the log target should
# have caused them to be flushed out. need to match using regexps
# as there's a timestamp at the front.
tmp1.seek(0)
self.assertContainsRe(tmp1.read(),
r"\d+\.\d+ comment to file1\n\d+\.\d+ again to file1\n")
tmp2.seek(0)
self.assertContainsRe(tmp2.read(),
r"\d+\.\d+ comment to file2\n")
finally:
tmp1.close()
tmp2.close()
def test__open_bzr_log_uses_stderr_for_failures(self):
# If _open_bzr_log cannot open the file, then we should write the
# warning to stderr. Since this is normally happening before logging is
# set up.
self.overrideAttr(sys, 'stderr', StringIO())
# Set the log file to something that cannot exist
self.overrideEnv('BZR_LOG', os.getcwd() + '/no-dir/bzr.log')
self.overrideAttr(trace, '_bzr_log_filename')
logf = trace._open_bzr_log()
self.assertIs(None, logf)
self.assertContainsRe(sys.stderr.getvalue(),
'failed to open trace file: .*/no-dir/bzr.log')
class TestVerbosityLevel(TestCase):
def test_verbosity_level(self):
set_verbosity_level(1)
self.assertEqual(1, get_verbosity_level())
self.assertTrue(is_verbose())
self.assertFalse(is_quiet())
set_verbosity_level(-1)
self.assertEqual(-1, get_verbosity_level())
self.assertFalse(is_verbose())
self.assertTrue(is_quiet())
set_verbosity_level(0)
self.assertEqual(0, get_verbosity_level())
self.assertFalse(is_verbose())
self.assertFalse(is_quiet())
def test_be_quiet(self):
# Confirm the old API still works
be_quiet(True)
self.assertEqual(-1, get_verbosity_level())
be_quiet(False)
self.assertEqual(0, get_verbosity_level())
class TestBzrLog(TestCaseInTempDir):
def test_log_rollover(self):
temp_log_name = 'test-log'
trace_file = open(temp_log_name, 'at')
trace_file.writelines(['test_log_rollover padding\n'] * 200000)
trace_file.close()
_rollover_trace_maybe(temp_log_name)
# should have been rolled over
self.assertFalse(os.access(temp_log_name, os.R_OK))
class TestTraceConfiguration(TestCaseInTempDir):
def test_default_config(self):
config = trace.DefaultConfig()
self.overrideAttr(trace, "_bzr_log_filename", None)
trace._bzr_log_filename = None
expected_filename = trace._get_bzr_log_filename()
self.assertEqual(None, trace._bzr_log_filename)
config.__enter__()
try:
# Should have entered and setup a default filename.
self.assertEqual(expected_filename, trace._bzr_log_filename)
finally:
config.__exit__(None, None, None)
# Should have exited and cleaned up.
self.assertEqual(None, trace._bzr_log_filename)
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