mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-26 14:50:36 +00:00
458 lines
13 KiB
Python
458 lines
13 KiB
Python
"""
|
|
python version compatibility code
|
|
"""
|
|
from __future__ import absolute_import
|
|
from __future__ import division
|
|
from __future__ import print_function
|
|
|
|
import codecs
|
|
import functools
|
|
import inspect
|
|
import re
|
|
import sys
|
|
from contextlib import contextmanager
|
|
|
|
import py
|
|
import six
|
|
from six import text_type
|
|
|
|
import _pytest
|
|
from _pytest._io.saferepr import saferepr
|
|
from _pytest.outcomes import fail
|
|
from _pytest.outcomes import TEST_OUTCOME
|
|
|
|
try:
|
|
import enum
|
|
except ImportError: # pragma: no cover
|
|
# Only available in Python 3.4+ or as a backport
|
|
enum = None
|
|
|
|
_PY3 = sys.version_info > (3, 0)
|
|
_PY2 = not _PY3
|
|
|
|
|
|
if _PY3:
|
|
from inspect import signature, Parameter as Parameter
|
|
else:
|
|
from funcsigs import signature, Parameter as Parameter
|
|
|
|
NoneType = type(None)
|
|
NOTSET = object()
|
|
|
|
PY35 = sys.version_info[:2] >= (3, 5)
|
|
PY36 = sys.version_info[:2] >= (3, 6)
|
|
MODULE_NOT_FOUND_ERROR = "ModuleNotFoundError" if PY36 else "ImportError"
|
|
|
|
|
|
if _PY3:
|
|
from collections.abc import MutableMapping as MappingMixin
|
|
from collections.abc import Iterable, Mapping, Sequence, Sized
|
|
else:
|
|
# those raise DeprecationWarnings in Python >=3.7
|
|
from collections import MutableMapping as MappingMixin # noqa
|
|
from collections import Iterable, Mapping, Sequence, Sized # noqa
|
|
|
|
|
|
if sys.version_info >= (3, 4):
|
|
from importlib.util import spec_from_file_location
|
|
else:
|
|
|
|
def spec_from_file_location(*_, **__):
|
|
return None
|
|
|
|
|
|
def _format_args(func):
|
|
return str(signature(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)
|
|
return genfunc and not iscoroutinefunction(func)
|
|
|
|
|
|
def iscoroutinefunction(func):
|
|
"""Return True if func is a decorated coroutine function.
|
|
|
|
Note: copied and modified from Python 3.5's builtin couroutines.py to avoid import asyncio directly,
|
|
which in turns also initializes the "logging" module as side-effect (see issue #8).
|
|
"""
|
|
return getattr(func, "_is_coroutine", False) or (
|
|
hasattr(inspect, "iscoroutinefunction") and inspect.iscoroutinefunction(func)
|
|
)
|
|
|
|
|
|
def getlocation(function, curdir):
|
|
function = get_real_func(function)
|
|
fn = py.path.local(inspect.getfile(function))
|
|
lineno = function.__code__.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_modules = [sys.modules.get("mock"), sys.modules.get("unittest.mock")]
|
|
if any(mock_modules):
|
|
sentinels = [m.DEFAULT for m in mock_modules if m is not None]
|
|
return len(
|
|
[p for p in patchings if not p.attribute_name and p.new in sentinels]
|
|
)
|
|
return len(patchings)
|
|
|
|
|
|
def getfuncargnames(function, is_method=False, cls=None):
|
|
"""Returns the names of a function's mandatory arguments.
|
|
|
|
This should return the names of all function arguments that:
|
|
* Aren't bound to an instance or type as in instance or class methods.
|
|
* Don't have default values.
|
|
* Aren't bound with functools.partial.
|
|
* Aren't replaced with mocks.
|
|
|
|
The is_method and cls arguments indicate that the function should
|
|
be treated as a bound method even though it's not unless, only in
|
|
the case of cls, the function is a static method.
|
|
|
|
@RonnyPfannschmidt: This function should be refactored when we
|
|
revisit fixtures. The fixture mechanism should ask the node for
|
|
the fixture names, and not try to obtain directly from the
|
|
function object well after collection has occurred.
|
|
|
|
"""
|
|
# The parameters attribute of a Signature object contains an
|
|
# ordered mapping of parameter names to Parameter instances. This
|
|
# creates a tuple of the names of the parameters that don't have
|
|
# defaults.
|
|
try:
|
|
parameters = signature(function).parameters
|
|
except (ValueError, TypeError) as e:
|
|
fail(
|
|
"Could not determine arguments of {!r}: {}".format(function, e),
|
|
pytrace=False,
|
|
)
|
|
|
|
arg_names = tuple(
|
|
p.name
|
|
for p in parameters.values()
|
|
if (
|
|
p.kind is Parameter.POSITIONAL_OR_KEYWORD
|
|
or p.kind is Parameter.KEYWORD_ONLY
|
|
)
|
|
and p.default is Parameter.empty
|
|
)
|
|
# If this function should be treated as a bound method even though
|
|
# it's passed as an unbound method or function, remove the first
|
|
# parameter name.
|
|
if is_method or (
|
|
cls and not isinstance(cls.__dict__.get(function.__name__, None), staticmethod)
|
|
):
|
|
arg_names = arg_names[1:]
|
|
# Remove any names that will be replaced with mocks.
|
|
if hasattr(function, "__wrapped__"):
|
|
arg_names = arg_names[num_mock_patch_args(function) :]
|
|
return arg_names
|
|
|
|
|
|
@contextmanager
|
|
def dummy_context_manager():
|
|
"""Context manager that does nothing, useful in situations where you might need an actual context manager or not
|
|
depending on some condition. Using this allow to keep the same code"""
|
|
yield
|
|
|
|
|
|
def get_default_arg_names(function):
|
|
# Note: this code intentionally mirrors the code at the beginning of getfuncargnames,
|
|
# to get the arguments which were excluded from its result because they had default values
|
|
return tuple(
|
|
p.name
|
|
for p in signature(function).parameters.values()
|
|
if p.kind in (Parameter.POSITIONAL_OR_KEYWORD, Parameter.KEYWORD_ONLY)
|
|
and p.default is not Parameter.empty
|
|
)
|
|
|
|
|
|
_non_printable_ascii_translate_table = {
|
|
i: u"\\x{:02x}".format(i) for i in range(128) if i not in range(32, 127)
|
|
}
|
|
_non_printable_ascii_translate_table.update(
|
|
{ord("\t"): u"\\t", ord("\r"): u"\\r", ord("\n"): u"\\n"}
|
|
)
|
|
|
|
|
|
def _translate_non_printable(s):
|
|
return s.translate(_non_printable_ascii_translate_table)
|
|
|
|
|
|
if _PY3:
|
|
STRING_TYPES = bytes, str
|
|
UNICODE_TYPES = six.text_type
|
|
|
|
if PY35:
|
|
|
|
def _bytes_to_ascii(val):
|
|
return val.decode("ascii", "backslashreplace")
|
|
|
|
else:
|
|
|
|
def _bytes_to_ascii(val):
|
|
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 ""
|
|
|
|
def ascii_escaped(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):
|
|
ret = _bytes_to_ascii(val)
|
|
else:
|
|
ret = val.encode("unicode_escape").decode("ascii")
|
|
return _translate_non_printable(ret)
|
|
|
|
|
|
else:
|
|
STRING_TYPES = six.string_types
|
|
UNICODE_TYPES = six.text_type
|
|
|
|
def ascii_escaped(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:
|
|
ret = val.decode("ascii")
|
|
except UnicodeDecodeError:
|
|
ret = val.encode("string-escape").decode("ascii")
|
|
else:
|
|
ret = val.encode("unicode-escape").decode("ascii")
|
|
return _translate_non_printable(ret)
|
|
|
|
|
|
class _PytestWrapper(object):
|
|
"""Dummy wrapper around a function object for internal use only.
|
|
|
|
Used to correctly unwrap the underlying function object
|
|
when we are creating fixtures, because we wrap the function object ourselves with a decorator
|
|
to issue warnings when the fixture function is called directly.
|
|
"""
|
|
|
|
def __init__(self, obj):
|
|
self.obj = obj
|
|
|
|
|
|
def get_real_func(obj):
|
|
""" gets the real function object of the (possibly) wrapped object by
|
|
functools.wraps or functools.partial.
|
|
"""
|
|
start_obj = obj
|
|
for i in range(100):
|
|
# __pytest_wrapped__ is set by @pytest.fixture when wrapping the fixture function
|
|
# to trigger a warning if it gets called directly instead of by pytest: we don't
|
|
# want to unwrap further than this otherwise we lose useful wrappings like @mock.patch (#3774)
|
|
new_obj = getattr(obj, "__pytest_wrapped__", None)
|
|
if isinstance(new_obj, _PytestWrapper):
|
|
obj = new_obj.obj
|
|
break
|
|
new_obj = getattr(obj, "__wrapped__", None)
|
|
if new_obj is None:
|
|
break
|
|
obj = new_obj
|
|
else:
|
|
raise ValueError(
|
|
("could not find real function of {start}\nstopped at {current}").format(
|
|
start=saferepr(start_obj), current=saferepr(obj)
|
|
)
|
|
)
|
|
if isinstance(obj, functools.partial):
|
|
obj = obj.func
|
|
return obj
|
|
|
|
|
|
def get_real_method(obj, holder):
|
|
"""
|
|
Attempts to obtain the real function object that might be wrapping ``obj``, while at the same time
|
|
returning a bound method to ``holder`` if the original object was a bound method.
|
|
"""
|
|
try:
|
|
is_method = hasattr(obj, "__func__")
|
|
obj = get_real_func(obj)
|
|
except Exception:
|
|
return obj
|
|
if is_method and hasattr(obj, "__get__") and callable(obj.__get__):
|
|
obj = obj.__get__(holder)
|
|
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:
|
|
return func
|
|
|
|
|
|
def safe_getattr(object, name, default):
|
|
""" Like getattr but return default upon any Exception or any OutcomeException.
|
|
|
|
Attribute access can potentially fail for 'evil' Python objects.
|
|
See issue #214.
|
|
It catches OutcomeException because of #2490 (issue #580), new outcomes are derived from BaseException
|
|
instead of Exception (for more details check #2707)
|
|
"""
|
|
try:
|
|
return getattr(object, name, default)
|
|
except TEST_OUTCOME:
|
|
return default
|
|
|
|
|
|
def safe_isclass(obj):
|
|
"""Ignore any exception via isinstance on Python 3."""
|
|
try:
|
|
return isclass(obj)
|
|
except Exception:
|
|
return False
|
|
|
|
|
|
def _is_unittest_unexpected_success_a_failure():
|
|
"""Return if the test suite should fail if an @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:
|
|
if not isinstance(v, text_type):
|
|
v = text_type(v)
|
|
errors = "replace"
|
|
return v.encode("utf-8", errors)
|
|
|
|
|
|
COLLECT_FAKEMODULE_ATTRIBUTES = (
|
|
"Collector",
|
|
"Module",
|
|
"Function",
|
|
"Instance",
|
|
"Session",
|
|
"Item",
|
|
"Class",
|
|
"File",
|
|
"_fillfuncargs",
|
|
)
|
|
|
|
|
|
def _setup_collect_fakemodule():
|
|
from types import ModuleType
|
|
import pytest
|
|
|
|
pytest.collect = ModuleType("pytest.collect")
|
|
pytest.collect.__all__ = [] # used for setns
|
|
for attr in COLLECT_FAKEMODULE_ATTRIBUTES:
|
|
setattr(pytest.collect, attr, getattr(pytest, attr))
|
|
|
|
|
|
if _PY2:
|
|
# Without this the test_dupfile_on_textio will fail, otherwise CaptureIO could directly inherit from StringIO.
|
|
from py.io import TextIO
|
|
|
|
class CaptureIO(TextIO):
|
|
@property
|
|
def encoding(self):
|
|
return getattr(self, "_encoding", "UTF-8")
|
|
|
|
|
|
else:
|
|
import io
|
|
|
|
class CaptureIO(io.TextIOWrapper):
|
|
def __init__(self):
|
|
super(CaptureIO, self).__init__(
|
|
io.BytesIO(), encoding="UTF-8", newline="", write_through=True
|
|
)
|
|
|
|
def getvalue(self):
|
|
return self.buffer.getvalue().decode("UTF-8")
|
|
|
|
|
|
class FuncargnamesCompatAttr(object):
|
|
""" helper class so that Metafunc, Function and FixtureRequest
|
|
don't need to each define the "funcargnames" compatibility attribute.
|
|
"""
|
|
|
|
@property
|
|
def funcargnames(self):
|
|
""" alias attribute for ``fixturenames`` for pre-2.3 compatibility"""
|
|
return self.fixturenames
|
|
|
|
|
|
if six.PY2:
|
|
|
|
def lru_cache(*_, **__):
|
|
def dec(fn):
|
|
return fn
|
|
|
|
return dec
|
|
|
|
|
|
else:
|
|
from functools import lru_cache # noqa: F401
|