/usr/lib/python2.7/dist-packages/nose/util.py is in python-nose 1.3.7-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 | """Utility functions and classes used by nose internally.
"""
import inspect
import itertools
import logging
import stat
import os
import re
import sys
import types
import unittest
from nose.pyversion import ClassType, TypeType, isgenerator, ismethod
log = logging.getLogger('nose')
ident_re = re.compile(r'^[A-Za-z_][A-Za-z0-9_.]*$')
class_types = (ClassType, TypeType)
skip_pattern = r"(?:\.svn)|(?:[^.]+\.py[co])|(?:.*~)|(?:.*\$py\.class)|(?:__pycache__)"
try:
set()
set = set # make from nose.util import set happy
except NameError:
try:
from sets import Set as set
except ImportError:
pass
def ls_tree(dir_path="",
skip_pattern=skip_pattern,
indent="|-- ", branch_indent="| ",
last_indent="`-- ", last_branch_indent=" "):
# TODO: empty directories look like non-directory files
return "\n".join(_ls_tree_lines(dir_path, skip_pattern,
indent, branch_indent,
last_indent, last_branch_indent))
def _ls_tree_lines(dir_path, skip_pattern,
indent, branch_indent, last_indent, last_branch_indent):
if dir_path == "":
dir_path = os.getcwd()
lines = []
names = os.listdir(dir_path)
names.sort()
dirs, nondirs = [], []
for name in names:
if re.match(skip_pattern, name):
continue
if os.path.isdir(os.path.join(dir_path, name)):
dirs.append(name)
else:
nondirs.append(name)
# list non-directories first
entries = list(itertools.chain([(name, False) for name in nondirs],
[(name, True) for name in dirs]))
def ls_entry(name, is_dir, ind, branch_ind):
if not is_dir:
yield ind + name
else:
path = os.path.join(dir_path, name)
if not os.path.islink(path):
yield ind + name
subtree = _ls_tree_lines(path, skip_pattern,
indent, branch_indent,
last_indent, last_branch_indent)
for x in subtree:
yield branch_ind + x
for name, is_dir in entries[:-1]:
for line in ls_entry(name, is_dir, indent, branch_indent):
yield line
if entries:
name, is_dir = entries[-1]
for line in ls_entry(name, is_dir, last_indent, last_branch_indent):
yield line
def absdir(path):
"""Return absolute, normalized path to directory, if it exists; None
otherwise.
"""
if not os.path.isabs(path):
path = os.path.normpath(os.path.abspath(os.path.join(os.getcwd(),
path)))
if path is None or not os.path.isdir(path):
return None
return path
def absfile(path, where=None):
"""Return absolute, normalized path to file (optionally in directory
where), or None if the file can't be found either in where or the current
working directory.
"""
orig = path
if where is None:
where = os.getcwd()
if isinstance(where, list) or isinstance(where, tuple):
for maybe_path in where:
maybe_abs = absfile(path, maybe_path)
if maybe_abs is not None:
return maybe_abs
return None
if not os.path.isabs(path):
path = os.path.normpath(os.path.abspath(os.path.join(where, path)))
if path is None or not os.path.exists(path):
if where != os.getcwd():
# try the cwd instead
path = os.path.normpath(os.path.abspath(os.path.join(os.getcwd(),
orig)))
if path is None or not os.path.exists(path):
return None
if os.path.isdir(path):
# might want an __init__.py from pacakge
init = os.path.join(path,'__init__.py')
if os.path.isfile(init):
return init
elif os.path.isfile(path):
return path
return None
def anyp(predicate, iterable):
for item in iterable:
if predicate(item):
return True
return False
def file_like(name):
"""A name is file-like if it is a path that exists, or it has a
directory part, or it ends in .py, or it isn't a legal python
identifier.
"""
return (os.path.exists(name)
or os.path.dirname(name)
or name.endswith('.py')
or not ident_re.match(os.path.splitext(name)[0]))
def func_lineno(func):
"""Get the line number of a function. First looks for
compat_co_firstlineno, then func_code.co_first_lineno.
"""
try:
return func.compat_co_firstlineno
except AttributeError:
try:
return func.func_code.co_firstlineno
except AttributeError:
return -1
def isclass(obj):
"""Is obj a class? Inspect's isclass is too liberal and returns True
for objects that can't be subclasses of anything.
"""
obj_type = type(obj)
return obj_type in class_types or issubclass(obj_type, type)
# backwards compat (issue #64)
is_generator = isgenerator
def ispackage(path):
"""
Is this path a package directory?
>>> ispackage('nose')
True
>>> ispackage('unit_tests')
False
>>> ispackage('nose/plugins')
True
>>> ispackage('nose/loader.py')
False
"""
if os.path.isdir(path):
# at least the end of the path must be a legal python identifier
# and __init__.py[co] must exist
end = os.path.basename(path)
if ident_re.match(end):
for init in ('__init__.py', '__init__.pyc', '__init__.pyo'):
if os.path.isfile(os.path.join(path, init)):
return True
if sys.platform.startswith('java') and \
os.path.isfile(os.path.join(path, '__init__$py.class')):
return True
return False
def isproperty(obj):
"""
Is this a property?
>>> class Foo:
... def got(self):
... return 2
... def get(self):
... return 1
... get = property(get)
>>> isproperty(Foo.got)
False
>>> isproperty(Foo.get)
True
"""
return type(obj) == property
def getfilename(package, relativeTo=None):
"""Find the python source file for a package, relative to a
particular directory (defaults to current working directory if not
given).
"""
if relativeTo is None:
relativeTo = os.getcwd()
path = os.path.join(relativeTo, os.sep.join(package.split('.')))
if os.path.exists(path + '/__init__.py'):
return path
filename = path + '.py'
if os.path.exists(filename):
return filename
return None
def getpackage(filename):
"""
Find the full dotted package name for a given python source file
name. Returns None if the file is not a python source file.
>>> getpackage('foo.py')
'foo'
>>> getpackage('biff/baf.py')
'baf'
>>> getpackage('nose/util.py')
'nose.util'
Works for directories too.
>>> getpackage('nose')
'nose'
>>> getpackage('nose/plugins')
'nose.plugins'
And __init__ files stuck onto directories
>>> getpackage('nose/plugins/__init__.py')
'nose.plugins'
Absolute paths also work.
>>> path = os.path.abspath(os.path.join('nose', 'plugins'))
>>> getpackage(path)
'nose.plugins'
"""
src_file = src(filename)
if (os.path.isdir(src_file) or not src_file.endswith('.py')) and not ispackage(src_file):
return None
base, ext = os.path.splitext(os.path.basename(src_file))
if base == '__init__':
mod_parts = []
else:
mod_parts = [base]
path, part = os.path.split(os.path.split(src_file)[0])
while part:
if ispackage(os.path.join(path, part)):
mod_parts.append(part)
else:
break
path, part = os.path.split(path)
mod_parts.reverse()
return '.'.join(mod_parts)
def ln(label):
"""Draw a 70-char-wide divider, with label in the middle.
>>> ln('hello there')
'---------------------------- hello there -----------------------------'
"""
label_len = len(label) + 2
chunk = (70 - label_len) // 2
out = '%s %s %s' % ('-' * chunk, label, '-' * chunk)
pad = 70 - len(out)
if pad > 0:
out = out + ('-' * pad)
return out
def resolve_name(name, module=None):
"""Resolve a dotted name to a module and its parts. This is stolen
wholesale from unittest.TestLoader.loadTestByName.
>>> resolve_name('nose.util') #doctest: +ELLIPSIS
<module 'nose.util' from...>
>>> resolve_name('nose.util.resolve_name') #doctest: +ELLIPSIS
<function resolve_name at...>
"""
parts = name.split('.')
parts_copy = parts[:]
if module is None:
while parts_copy:
try:
log.debug("__import__ %s", name)
module = __import__('.'.join(parts_copy))
break
except ImportError:
del parts_copy[-1]
if not parts_copy:
raise
parts = parts[1:]
obj = module
log.debug("resolve: %s, %s, %s, %s", parts, name, obj, module)
for part in parts:
obj = getattr(obj, part)
return obj
def split_test_name(test):
"""Split a test name into a 3-tuple containing file, module, and callable
names, any of which (but not all) may be blank.
Test names are in the form:
file_or_module:callable
Either side of the : may be dotted. To change the splitting behavior, you
can alter nose.util.split_test_re.
"""
norm = os.path.normpath
file_or_mod = test
fn = None
if not ':' in test:
# only a file or mod part
if file_like(test):
return (norm(test), None, None)
else:
return (None, test, None)
# could be path|mod:callable, or a : in the file path someplace
head, tail = os.path.split(test)
if not head:
# this is a case like 'foo:bar' -- generally a module
# name followed by a callable, but also may be a windows
# drive letter followed by a path
try:
file_or_mod, fn = test.split(':')
if file_like(fn):
# must be a funny path
file_or_mod, fn = test, None
except ValueError:
# more than one : in the test
# this is a case like c:\some\path.py:a_test
parts = test.split(':')
if len(parts[0]) == 1:
file_or_mod, fn = ':'.join(parts[:-1]), parts[-1]
else:
# nonsense like foo:bar:baz
raise ValueError("Test name '%s' could not be parsed. Please "
"format test names as path:callable or "
"module:callable." % (test,))
elif not tail:
# this is a case like 'foo:bar/'
# : must be part of the file path, so ignore it
file_or_mod = test
else:
if ':' in tail:
file_part, fn = tail.split(':')
else:
file_part = tail
file_or_mod = os.sep.join([head, file_part])
if file_or_mod:
if file_like(file_or_mod):
return (norm(file_or_mod), None, fn)
else:
return (None, file_or_mod, fn)
else:
return (None, None, fn)
split_test_name.__test__ = False # do not collect
def test_address(test):
"""Find the test address for a test, which may be a module, filename,
class, method or function.
"""
if hasattr(test, "address"):
return test.address()
# type-based polymorphism sucks in general, but I believe is
# appropriate here
t = type(test)
file = module = call = None
if t == types.ModuleType:
file = getattr(test, '__file__', None)
module = getattr(test, '__name__', None)
return (src(file), module, call)
if t == types.FunctionType or issubclass(t, type) or t == types.ClassType:
module = getattr(test, '__module__', None)
if module is not None:
m = sys.modules[module]
file = getattr(m, '__file__', None)
if file is not None:
file = os.path.abspath(file)
call = getattr(test, '__name__', None)
return (src(file), module, call)
if t == types.MethodType:
cls_adr = test_address(test.im_class)
return (src(cls_adr[0]), cls_adr[1],
"%s.%s" % (cls_adr[2], test.__name__))
# handle unittest.TestCase instances
if isinstance(test, unittest.TestCase):
if (hasattr(test, '_FunctionTestCase__testFunc') # pre 2.7
or hasattr(test, '_testFunc')): # 2.7
# unittest FunctionTestCase
try:
return test_address(test._FunctionTestCase__testFunc)
except AttributeError:
return test_address(test._testFunc)
# regular unittest.TestCase
cls_adr = test_address(test.__class__)
# 2.5 compat: __testMethodName changed to _testMethodName
try:
method_name = test._TestCase__testMethodName
except AttributeError:
method_name = test._testMethodName
return (src(cls_adr[0]), cls_adr[1],
"%s.%s" % (cls_adr[2], method_name))
if (hasattr(test, '__class__') and
test.__class__.__module__ not in ('__builtin__', 'builtins')):
return test_address(test.__class__)
raise TypeError("I don't know what %s is (%s)" % (test, t))
test_address.__test__ = False # do not collect
def try_run(obj, names):
"""Given a list of possible method names, try to run them with the
provided object. Keep going until something works. Used to run
setup/teardown methods for module, package, and function tests.
"""
for name in names:
func = getattr(obj, name, None)
if func is not None:
if type(obj) == types.ModuleType:
# py.test compatibility
if isinstance(func, types.FunctionType):
args, varargs, varkw, defaults = \
inspect.getargspec(func)
else:
# Not a function. If it's callable, call it anyway
if hasattr(func, '__call__') and not inspect.ismethod(func):
func = func.__call__
try:
args, varargs, varkw, defaults = \
inspect.getargspec(func)
args.pop(0) # pop the self off
except TypeError:
raise TypeError("Attribute %s of %r is not a python "
"function. Only functions or callables"
" may be used as fixtures." %
(name, obj))
if len(args):
log.debug("call fixture %s.%s(%s)", obj, name, obj)
return func(obj)
log.debug("call fixture %s.%s", obj, name)
return func()
def src(filename):
"""Find the python source file for a .pyc, .pyo or $py.class file on
jython. Returns the filename provided if it is not a python source
file.
"""
if filename is None:
return filename
if sys.platform.startswith('java') and filename.endswith('$py.class'):
return '.'.join((filename[:-9], 'py'))
base, ext = os.path.splitext(filename)
if ext in ('.pyc', '.pyo', '.py'):
return '.'.join((base, 'py'))
return filename
def regex_last_key(regex):
"""Sort key function factory that puts items that match a
regular expression last.
>>> from nose.config import Config
>>> from nose.pyversion import sort_list
>>> c = Config()
>>> regex = c.testMatch
>>> entries = ['.', '..', 'a_test', 'src', 'lib', 'test', 'foo.py']
>>> sort_list(entries, regex_last_key(regex))
>>> entries
['.', '..', 'foo.py', 'lib', 'src', 'a_test', 'test']
"""
def k(obj):
if regex.search(obj):
return (1, obj)
return (0, obj)
return k
def tolist(val):
"""Convert a value that may be a list or a (possibly comma-separated)
string into a list. The exception: None is returned as None, not [None].
>>> tolist(["one", "two"])
['one', 'two']
>>> tolist("hello")
['hello']
>>> tolist("separate,values, with, commas, spaces , are ,ok")
['separate', 'values', 'with', 'commas', 'spaces', 'are', 'ok']
"""
if val is None:
return None
try:
# might already be a list
val.extend([])
return val
except AttributeError:
pass
# might be a string
try:
return re.split(r'\s*,\s*', val)
except TypeError:
# who knows...
return list(val)
class odict(dict):
"""Simple ordered dict implementation, based on:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/107747
"""
def __init__(self, *arg, **kw):
self._keys = []
super(odict, self).__init__(*arg, **kw)
def __delitem__(self, key):
super(odict, self).__delitem__(key)
self._keys.remove(key)
def __setitem__(self, key, item):
super(odict, self).__setitem__(key, item)
if key not in self._keys:
self._keys.append(key)
def __str__(self):
return "{%s}" % ', '.join(["%r: %r" % (k, v) for k, v in self.items()])
def clear(self):
super(odict, self).clear()
self._keys = []
def copy(self):
d = super(odict, self).copy()
d._keys = self._keys[:]
return d
def items(self):
return zip(self._keys, self.values())
def keys(self):
return self._keys[:]
def setdefault(self, key, failobj=None):
item = super(odict, self).setdefault(key, failobj)
if key not in self._keys:
self._keys.append(key)
return item
def update(self, dict):
super(odict, self).update(dict)
for key in dict.keys():
if key not in self._keys:
self._keys.append(key)
def values(self):
return map(self.get, self._keys)
def transplant_func(func, module):
"""
Make a function imported from module A appear as if it is located
in module B.
>>> from pprint import pprint
>>> pprint.__module__
'pprint'
>>> pp = transplant_func(pprint, __name__)
>>> pp.__module__
'nose.util'
The original function is not modified.
>>> pprint.__module__
'pprint'
Calling the transplanted function calls the original.
>>> pp([1, 2])
[1, 2]
>>> pprint([1,2])
[1, 2]
"""
from nose.tools import make_decorator
if isgenerator(func):
def newfunc(*arg, **kw):
for v in func(*arg, **kw):
yield v
else:
def newfunc(*arg, **kw):
return func(*arg, **kw)
newfunc = make_decorator(func)(newfunc)
newfunc.__module__ = module
return newfunc
def transplant_class(cls, module):
"""
Make a class appear to reside in `module`, rather than the module in which
it is actually defined.
>>> from nose.failure import Failure
>>> Failure.__module__
'nose.failure'
>>> Nf = transplant_class(Failure, __name__)
>>> Nf.__module__
'nose.util'
>>> Nf.__name__
'Failure'
"""
class C(cls):
pass
C.__module__ = module
C.__name__ = cls.__name__
C.__qualname__ = cls.__name__
return C
def safe_str(val, encoding='utf-8'):
try:
return str(val)
except UnicodeEncodeError:
if isinstance(val, Exception):
return ' '.join([safe_str(arg, encoding)
for arg in val])
return unicode(val).encode(encoding)
def is_executable(file):
if not os.path.exists(file):
return False
st = os.stat(file)
return bool(st.st_mode & (stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH))
if __name__ == '__main__':
import doctest
doctest.testmod()
|