236 lines
6.8 KiB
Python
236 lines
6.8 KiB
Python
"""
|
|
python version compatibility code
|
|
"""
|
|
import sys
|
|
import inspect
|
|
import types
|
|
import re
|
|
import functools
|
|
|
|
import py
|
|
|
|
import _pytest
|
|
|
|
|
|
|
|
try:
|
|
import enum
|
|
except ImportError: # pragma: no cover
|
|
# Only available in Python 3.4+ or as a backport
|
|
enum = None
|
|
|
|
try:
|
|
import asyncio
|
|
except ImportError: # pragma: no cover
|
|
# Only available in Python 3.4+ or as a backport
|
|
asyncio = None
|
|
|
|
_PY3 = sys.version_info > (3, 0)
|
|
_PY2 = not _PY3
|
|
|
|
|
|
NoneType = type(None)
|
|
NOTSET = object()
|
|
|
|
if hasattr(inspect, 'signature'):
|
|
def _format_args(func):
|
|
return str(inspect.signature(func))
|
|
else:
|
|
def _format_args(func):
|
|
return inspect.formatargspec(*inspect.getargspec(func))
|
|
|
|
isfunction = inspect.isfunction
|
|
isclass = inspect.isclass
|
|
# used to work around a python2 exception info leak
|
|
exc_clear = getattr(sys, 'exc_clear', lambda: None)
|
|
# The type of re.compile objects is not exposed in Python.
|
|
REGEX_TYPE = type(re.compile(''))
|
|
|
|
|
|
def is_generator(func):
|
|
genfunc = inspect.isgeneratorfunction(func)
|
|
if asyncio is not None:
|
|
return genfunc and not asyncio.iscoroutinefunction(func)
|
|
return genfunc
|
|
|
|
|
|
def getlocation(function, curdir):
|
|
import inspect
|
|
fn = py.path.local(inspect.getfile(function))
|
|
lineno = py.builtin._getcode(function).co_firstlineno
|
|
if fn.relto(curdir):
|
|
fn = fn.relto(curdir)
|
|
return "%s:%d" %(fn, lineno+1)
|
|
|
|
|
|
def num_mock_patch_args(function):
|
|
""" return number of arguments used up by mock arguments (if any) """
|
|
patchings = getattr(function, "patchings", None)
|
|
if not patchings:
|
|
return 0
|
|
mock = sys.modules.get("mock", sys.modules.get("unittest.mock", None))
|
|
if mock is not None:
|
|
return len([p for p in patchings
|
|
if not p.attribute_name and p.new is mock.DEFAULT])
|
|
return len(patchings)
|
|
|
|
|
|
def getfuncargnames(function, startindex=None):
|
|
# XXX merge with main.py's varnames
|
|
#assert not isclass(function)
|
|
realfunction = function
|
|
while hasattr(realfunction, "__wrapped__"):
|
|
realfunction = realfunction.__wrapped__
|
|
if startindex is None:
|
|
startindex = inspect.ismethod(function) and 1 or 0
|
|
if realfunction != function:
|
|
startindex += num_mock_patch_args(function)
|
|
function = realfunction
|
|
if isinstance(function, functools.partial):
|
|
argnames = inspect.getargs(_pytest._code.getrawcode(function.func))[0]
|
|
partial = function
|
|
argnames = argnames[len(partial.args):]
|
|
if partial.keywords:
|
|
for kw in partial.keywords:
|
|
argnames.remove(kw)
|
|
else:
|
|
argnames = inspect.getargs(_pytest._code.getrawcode(function))[0]
|
|
defaults = getattr(function, 'func_defaults',
|
|
getattr(function, '__defaults__', None)) or ()
|
|
numdefaults = len(defaults)
|
|
if numdefaults:
|
|
return tuple(argnames[startindex:-numdefaults])
|
|
return tuple(argnames[startindex:])
|
|
|
|
|
|
|
|
if sys.version_info[:2] == (2, 6):
|
|
def isclass(object):
|
|
""" Return true if the object is a class. Overrides inspect.isclass for
|
|
python 2.6 because it will return True for objects which always return
|
|
something on __getattr__ calls (see #1035).
|
|
Backport of https://hg.python.org/cpython/rev/35bf8f7a8edc
|
|
"""
|
|
return isinstance(object, (type, types.ClassType))
|
|
|
|
|
|
if _PY3:
|
|
import codecs
|
|
|
|
STRING_TYPES = bytes, str
|
|
|
|
def _escape_strings(val):
|
|
"""If val is pure ascii, returns it as a str(). Otherwise, escapes
|
|
bytes objects into a sequence of escaped bytes:
|
|
|
|
b'\xc3\xb4\xc5\xd6' -> u'\\xc3\\xb4\\xc5\\xd6'
|
|
|
|
and escapes unicode objects into a sequence of escaped unicode
|
|
ids, e.g.:
|
|
|
|
'4\\nV\\U00043efa\\x0eMXWB\\x1e\\u3028\\u15fd\\xcd\\U0007d944'
|
|
|
|
note:
|
|
the obvious "v.decode('unicode-escape')" will return
|
|
valid utf-8 unicode if it finds them in bytes, but we
|
|
want to return escaped bytes for any byte, even if they match
|
|
a utf-8 string.
|
|
|
|
"""
|
|
if isinstance(val, bytes):
|
|
if val:
|
|
# source: http://goo.gl/bGsnwC
|
|
encoded_bytes, _ = codecs.escape_encode(val)
|
|
return encoded_bytes.decode('ascii')
|
|
else:
|
|
# empty bytes crashes codecs.escape_encode (#1087)
|
|
return ''
|
|
else:
|
|
return val.encode('unicode_escape').decode('ascii')
|
|
else:
|
|
STRING_TYPES = bytes, str, unicode
|
|
|
|
def _escape_strings(val):
|
|
"""In py2 bytes and str are the same type, so return if it's a bytes
|
|
object, return it unchanged if it is a full ascii string,
|
|
otherwise escape it into its binary form.
|
|
|
|
If it's a unicode string, change the unicode characters into
|
|
unicode escapes.
|
|
|
|
"""
|
|
if isinstance(val, bytes):
|
|
try:
|
|
return val.encode('ascii')
|
|
except UnicodeDecodeError:
|
|
return val.encode('string-escape')
|
|
else:
|
|
return val.encode('unicode-escape')
|
|
|
|
|
|
def get_real_func(obj):
|
|
""" gets the real function object of the (possibly) wrapped object by
|
|
functools.wraps or functools.partial.
|
|
"""
|
|
while hasattr(obj, "__wrapped__"):
|
|
obj = obj.__wrapped__
|
|
if isinstance(obj, functools.partial):
|
|
obj = obj.func
|
|
return obj
|
|
|
|
|
|
def getfslineno(obj):
|
|
# xxx let decorators etc specify a sane ordering
|
|
obj = get_real_func(obj)
|
|
if hasattr(obj, 'place_as'):
|
|
obj = obj.place_as
|
|
fslineno = _pytest._code.getfslineno(obj)
|
|
assert isinstance(fslineno[1], int), obj
|
|
return fslineno
|
|
|
|
|
|
def getimfunc(func):
|
|
try:
|
|
return func.__func__
|
|
except AttributeError:
|
|
try:
|
|
return func.im_func
|
|
except AttributeError:
|
|
return func
|
|
|
|
|
|
def safe_getattr(object, name, default):
|
|
""" Like getattr but return default upon any Exception.
|
|
|
|
Attribute access can potentially fail for 'evil' Python objects.
|
|
See issue214
|
|
"""
|
|
try:
|
|
return getattr(object, name, default)
|
|
except Exception:
|
|
return default
|
|
|
|
|
|
def _is_unittest_unexpected_success_a_failure():
|
|
"""Return if the test suite should fail if a @expectedFailure unittest test PASSES.
|
|
|
|
From https://docs.python.org/3/library/unittest.html?highlight=unittest#unittest.TestResult.wasSuccessful:
|
|
Changed in version 3.4: Returns False if there were any
|
|
unexpectedSuccesses from tests marked with the expectedFailure() decorator.
|
|
"""
|
|
return sys.version_info >= (3, 4)
|
|
|
|
|
|
if _PY3:
|
|
def safe_str(v):
|
|
"""returns v as string"""
|
|
return str(v)
|
|
else:
|
|
def safe_str(v):
|
|
"""returns v as string, converting to ascii if necessary"""
|
|
try:
|
|
return str(v)
|
|
except UnicodeError:
|
|
errors = 'replace'
|
|
return v.encode('ascii', errors)
|