本文整理汇总了Python中test.support.swap_attr方法的典型用法代码示例。如果您正苦于以下问题:Python support.swap_attr方法的具体用法?Python support.swap_attr怎么用?Python support.swap_attr使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类test.support
的用法示例。
在下文中一共展示了support.swap_attr方法的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_rmtree
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_rmtree(self):
dirpath = support.TESTFN + 'd'
subdirpath = os.path.join(dirpath, 'subdir')
os.mkdir(dirpath)
os.mkdir(subdirpath)
support.rmtree(dirpath)
self.assertFalse(os.path.exists(dirpath))
with support.swap_attr(support, 'verbose', 0):
support.rmtree(dirpath)
os.mkdir(dirpath)
os.mkdir(subdirpath)
os.chmod(dirpath, stat.S_IRUSR|stat.S_IXUSR)
with support.swap_attr(support, 'verbose', 0):
support.rmtree(dirpath)
self.assertFalse(os.path.exists(dirpath))
os.mkdir(dirpath)
os.mkdir(subdirpath)
os.chmod(dirpath, 0)
with support.swap_attr(support, 'verbose', 0):
support.rmtree(dirpath)
self.assertFalse(os.path.exists(dirpath))
示例2: test_swap_attr
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_swap_attr(self):
class Obj:
pass
obj = Obj()
obj.x = 1
with support.swap_attr(obj, "x", 5) as x:
self.assertEqual(obj.x, 5)
self.assertEqual(x, 1)
self.assertEqual(obj.x, 1)
with support.swap_attr(obj, "y", 5) as y:
self.assertEqual(obj.y, 5)
self.assertIsNone(y)
self.assertFalse(hasattr(obj, 'y'))
with support.swap_attr(obj, "y", 5):
del obj.y
self.assertFalse(hasattr(obj, 'y'))
示例3: test_list_verbose
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_list_verbose(self):
tio = io.TextIOWrapper(io.BytesIO(), 'ascii', newline='\n')
with support.swap_attr(sys, 'stdout', tio):
self.tar.list(verbose=True)
out = tio.detach().getvalue()
# Make sure it prints files separated by one newline with 'ls -l'-like
# accessories if verbose flag is being used
# ...
# ?rw-r--r-- tarfile/tarfile 7011 2003-01-06 07:19:43 ustar/conttype
# ?rw-r--r-- tarfile/tarfile 7011 2003-01-06 07:19:43 ustar/regtype
# ...
self.assertRegex(out, (br'\?rw-r--r-- tarfile/tarfile\s+7011 '
br'\d{4}-\d\d-\d\d\s+\d\d:\d\d:\d\d '
br'ustar/\w+type ?\r?\n') * 2)
# Make sure it prints the source of link with verbose flag
self.assertIn(b'ustar/symtype -> regtype', out)
self.assertIn(b'./ustar/linktest2/symtype -> ../linktest1/regtype', out)
self.assertIn(b'./ustar/linktest2/lnktype link to '
b'./ustar/linktest1/regtype', out)
self.assertIn(b'gnu' + (b'/123' * 125) + b'/longlink link to gnu' +
(b'/123' * 125) + b'/longname', out)
self.assertIn(b'pax' + (b'/123' * 125) + b'/longlink link to pax' +
(b'/123' * 125) + b'/longname', out)
示例4: test_modify_builtins_from_leaf_function
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_modify_builtins_from_leaf_function(self):
# Verify that modifications made by leaf functions percolate up the
# callstack.
with swap_attr(builtins, "len", len):
def bar():
builtins.len = lambda x: 4
def foo(modifier):
l = []
l.append(len(range(7)))
modifier()
l.append(len(range(7)))
return l
self.configure_func(foo, lambda: None)
self.assertEqual(foo(bar), [7, 4])
示例5: test_bad_timezone
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_bad_timezone(self):
# Explicitly test possibility of bad timezone;
# when time.tzname[0] == time.tzname[1] and time.daylight
tz_name = time.tzname[0]
if tz_name.upper() in ("UTC", "GMT"):
self.skipTest('need non-UTC/GMT timezone')
with support.swap_attr(time, 'tzname', (tz_name, tz_name)), \
support.swap_attr(time, 'daylight', 1), \
support.swap_attr(time, 'tzset', lambda: None):
time.tzname = (tz_name, tz_name)
time.daylight = 1
tz_value = _strptime._strptime_time(tz_name, "%Z")[8]
self.assertEqual(tz_value, -1,
"%s lead to a timezone value of %s instead of -1 when "
"time.daylight set to %s and passing in %s" %
(time.tzname, tz_value, time.daylight, tz_name))
示例6: test_windows_colon
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_windows_colon(self):
with support.swap_attr(server.os, 'path', ntpath):
path = self.handler.translate_path('c:c:c:foo/filename')
path = path.replace(ntpath.sep, os.sep)
self.assertEqual(path, self.translated)
path = self.handler.translate_path('\\c:../filename')
path = path.replace(ntpath.sep, os.sep)
self.assertEqual(path, self.translated)
path = self.handler.translate_path('c:\\c:..\\foo/filename')
path = path.replace(ntpath.sep, os.sep)
self.assertEqual(path, self.translated)
path = self.handler.translate_path('c:c:foo\\c:c:bar/filename')
path = path.replace(ntpath.sep, os.sep)
self.assertEqual(path, self.translated)
示例7: test_fallback
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_fallback(self):
with support.EnvironmentVarGuard() as env:
del env['LINES']
del env['COLUMNS']
# sys.__stdout__ has no fileno()
with support.swap_attr(sys, '__stdout__', None):
size = shutil.get_terminal_size(fallback=(10, 20))
self.assertEqual(size.columns, 10)
self.assertEqual(size.lines, 20)
# sys.__stdout__ is not a terminal on Unix
# or fileno() not in (0, 1, 2) on Windows
with open(os.devnull, 'w') as f, \
support.swap_attr(sys, '__stdout__', f):
size = shutil.get_terminal_size(fallback=(30, 40))
self.assertEqual(size.columns, 30)
self.assertEqual(size.lines, 40)
示例8: test_home_not_set
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_home_not_set(self):
fake_home = support.TESTFN
os.mkdir(fake_home)
self.addCleanup(support.rmtree, fake_home)
fake_netrc_path = os.path.join(fake_home, '.netrc')
with open(fake_netrc_path, 'w') as f:
f.write('machine foo.domain.com login bar password pass')
os.chmod(fake_netrc_path, 0o600)
orig_expanduser = os.path.expanduser
called = []
def fake_expanduser(s):
called.append(s)
with support.EnvironmentVarGuard() as environ:
environ.set('HOME', fake_home)
result = orig_expanduser(s)
return result
with support.swap_attr(os.path, 'expanduser', fake_expanduser):
nrc = netrc.netrc()
login, account, password = nrc.authenticators('foo.domain.com')
self.assertEqual(login, 'bar')
self.assertTrue(called)
示例9: test_formatwarning_override
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_formatwarning_override(self):
# bpo-35178: Test that a custom formatwarning function gets the 'line'
# argument as a positional argument, and not only as a keyword argument
def myformatwarning(message, category, filename, lineno, text):
return f'm={message}:c={category}:f={filename}:l={lineno}:t={text}'
file_name = os.path.splitext(warning_tests.__file__)[0] + '.py'
line_num = 3
file_line = linecache.getline(file_name, line_num).strip()
message = 'msg'
category = Warning
file_object = StringIO()
expected = f'm={message}:c={category}:f={file_name}:l={line_num}' + \
f':t={file_line}'
with support.swap_attr(self.module, 'formatwarning', myformatwarning):
self.module.showwarning(message, category, file_name, line_num,
file_object, file_line)
self.assertEqual(file_object.getvalue(), expected)
示例10: test_record_override_showwarning_before
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_record_override_showwarning_before(self):
# Issue #28835: If warnings.showwarning() was overridden, make sure
# that catch_warnings(record=True) overrides it again.
text = "This is a warning"
wmod = self.module
my_log = []
def my_logger(message, category, filename, lineno, file=None, line=None):
nonlocal my_log
my_log.append(message)
# Override warnings.showwarning() before calling catch_warnings()
with support.swap_attr(wmod, 'showwarning', my_logger):
with wmod.catch_warnings(module=wmod, record=True) as log:
self.assertIsNot(wmod.showwarning, my_logger)
wmod.simplefilter("always")
wmod.warn(text)
self.assertIs(wmod.showwarning, my_logger)
self.assertEqual(len(log), 1, log)
self.assertEqual(log[0].message.args[0], text)
self.assertEqual(my_log, [])
示例11: test_find_executable
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_find_executable(self):
with test_support.temp_dir() as tmp_dir:
# use TESTFN to get a pseudo-unique filename
program_noeext = test_support.TESTFN
# Give the temporary program an ".exe" suffix for all.
# It's needed on Windows and not harmful on other platforms.
program = program_noeext + ".exe"
filename = os.path.join(tmp_dir, program)
with open(filename, "wb"):
pass
os.chmod(filename, stat.S_IXUSR)
# test path parameter
rv = find_executable(program, path=tmp_dir)
self.assertEqual(rv, filename)
if sys.platform == 'win32':
# test without ".exe" extension
rv = find_executable(program_noeext, path=tmp_dir)
self.assertEqual(rv, filename)
# test find in the current directory
with test_support.change_cwd(tmp_dir):
rv = find_executable(program)
self.assertEqual(rv, program)
# test non-existent program
dont_exist_program = "dontexist_" + program
rv = find_executable(dont_exist_program , path=tmp_dir)
self.assertIsNone(rv)
# test os.defpath: missing PATH environment variable
with test_support.EnvironmentVarGuard() as env:
from distutils import spawn
with test_support.swap_attr(spawn.os, 'defpath', tmp_dir):
env.pop('PATH')
rv = find_executable(program)
self.assertEqual(rv, filename)
示例12: test_memoryerror
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_memoryerror(self):
lines = linecache.getlines(FILENAME)
self.assertTrue(lines)
def raise_memoryerror(*args, **kwargs):
raise MemoryError
with support.swap_attr(linecache, 'updatecache', raise_memoryerror):
lines2 = linecache.getlines(FILENAME)
self.assertEqual(lines2, lines)
linecache.clearcache()
with support.swap_attr(linecache, 'updatecache', raise_memoryerror):
lines3 = linecache.getlines(FILENAME)
self.assertEqual(lines3, [])
self.assertEqual(linecache.getlines(FILENAME), lines)
示例13: test_no_home_directory
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_no_home_directory(self):
# bpo-10496: getuserbase() and getusersitepackages() must not fail if
# the current user has no home directory (if expanduser() returns the
# path unchanged).
site.USER_SITE = None
site.USER_BASE = None
sysconfig._CONFIG_VARS = None
with EnvironmentVarGuard() as environ, \
support.swap_attr(os.path, 'expanduser', lambda path: path):
del environ['PYTHONUSERBASE']
del environ['APPDATA']
user_base = site.getuserbase()
self.assertTrue(user_base.startswith('~' + os.sep),
user_base)
user_site = site.getusersitepackages()
self.assertTrue(user_site.startswith(user_base), user_site)
def fake_isdir(path):
fake_isdir.arg = path
return False
fake_isdir.arg = None
def must_not_be_called(*args):
raise AssertionError
with support.swap_attr(os.path, 'isdir', fake_isdir), \
support.swap_attr(site, 'addsitedir', must_not_be_called), \
support.swap_attr(site, 'ENABLE_USER_SITE', True):
# addusersitepackages() must not add user_site to sys.path
# if it is not an existing directory
known_paths = set()
site.addusersitepackages(known_paths)
self.assertEqual(fake_isdir.arg, user_site)
self.assertFalse(known_paths)
示例14: test_swap_attr
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_swap_attr(self):
class Obj:
x = 1
obj = Obj()
with support.swap_attr(obj, "x", 5):
self.assertEqual(obj.x, 5)
self.assertEqual(obj.x, 1)
示例15: test_no_files_left_behind
# 需要导入模块: from test import support [as 别名]
# 或者: from test.support import swap_attr [as 别名]
def test_no_files_left_behind(self):
# use a private empty directory
with tempfile.TemporaryDirectory() as our_temp_directory:
# force _get_default_tempdir() to consider our empty directory
def our_candidate_list():
return [our_temp_directory]
with support.swap_attr(tempfile, "_candidate_tempdir_list",
our_candidate_list):
# verify our directory is empty after _get_default_tempdir()
tempfile._get_default_tempdir()
self.assertEqual(os.listdir(our_temp_directory), [])
def raise_OSError(*args, **kwargs):
raise OSError()
with support.swap_attr(io, "open", raise_OSError):
# test again with failing io.open()
with self.assertRaises(FileNotFoundError):
tempfile._get_default_tempdir()
self.assertEqual(os.listdir(our_temp_directory), [])
open = io.open
def bad_writer(*args, **kwargs):
fp = open(*args, **kwargs)
fp.write = raise_OSError
return fp
with support.swap_attr(io, "open", bad_writer):
# test again with failing write()
with self.assertRaises(FileNotFoundError):
tempfile._get_default_tempdir()
self.assertEqual(os.listdir(our_temp_directory), [])