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S )a= Convenience decorator to use patcher with additional parameters in a
test function.
Usage::
@patchfs
def test_my_function(fake_fs):
fake_fs.create_file('foo')
@patchfs(allow_root_user=False)
def test_with_patcher_args(fs):
os.makedirs('foo/bar')
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NT) rv rw rx ry rz r{ r| r~ is_doc_test)globssetUptearDown) r DOC_PATCHER
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TestCaseMixina Test case mixin that automatically replaces file-system related
modules by fake implementations.
Attributes:
additional_skip_names: names of modules where no module
replacement shall be performed, in addition to the names in
:py:attr:`fake_filesystem_unittest.Patcher.SKIPNAMES`.
Instead of the module names, the modules themselves may be used.
modules_to_reload: A list of modules that need to be reloaded
to be patched dynamically; may be needed if the module
imports file system modules under an alias
.. caution:: Reloading modules may have unwanted side effects.
modules_to_patch: A dictionary of fake modules mapped to the
fully qualified patched module names. Can be used to add patching
of modules not provided by `pyfakefs`.
If you specify some of these attributes here, and you have DocTests,
consider also specifying the same arguments to :py:func:`load_doctests`.
Example usage in derived test classes::
from unittest import TestCase
from fake_filesystem_unittest import TestCaseMixin
class MyTestCase(TestCase, TestCaseMixin):
def __init__(self, methodName='runTest'):
super(MyTestCase, self).__init__(
methodName=methodName,
additional_skip_names=['posixpath'])
import sut
class AnotherTestCase(TestCase, TestCaseMixin):
def __init__(self, methodName='runTest'):
super(MyTestCase, self).__init__(
methodName=methodName, modules_to_reload=[sut])
Nrv rw rx c ` t | d r| j p t j S t j S )N_patcher)rY r r PATCHERr: s r< patcherzTestCaseMixin.patcher_ s+ 4 $ $ 4=3GO 3 r> r c @ t t | j j S r7 )r r( r r r: s r< r zTestCaseMixin.fse s NDLO444r> TFry rz r{ r| r} r~ c
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system instead of the real file system. Also bind the fake `open()`
function.
Invoke this at the beginning of the `setUp()` method in your unit test
class.
For the arguments, see the `TestCaseMixin` attribute description.
If any of the arguments is not `None`, it overwrites the settings for
the current test case. Settings the arguments here may be a more
convenient way to adapt the setting than overwriting `__init__()`.
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can be used in `setUpClass` instead of in `setUp`.
The fake filesystem will live in all test methods in the test class
and can be used in the usual way.
Note that using both :py:func:`setUpClassPyfakefs` and
:py:func:`setUpPyfakefs` in the same class will not work correctly.
.. note:: This method is only available from Python 3.8 onwards.
.. note:: If using `pytest` as testrunner, you need at least pytest 6.2
for this method to work.
)rA zIsetUpClassPyfakefs is only available in Python versions starting from 3.8Nru )
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Xs++GO,DEEEEEr> c @ t j rt j j S dS )zConvenience class method for accessing the fake filesystem.
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has been called.
N)r r r r s r< fake_fszTestCaseMixin.fake_fs s ? &?% %tr> c 8 | j dS )Pause the patching of the file system modules until `resume` is
called. After that call, all file system calls are executed in the
real file system.
Calling pause() twice is silently ignored.
N)r pauser: s r< r zTestCaseMixin.pause s
r> c 8 | j dS zResume the patching of the file system modules if `pause` has
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executed in the fake file system.
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N)r resumer: s r< r zTestCaseMixin.resume s
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methodNamerv rw rx c t t | || _ || _ || _ dS )zCreates the test class instance and the patcher used to stub out
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N)superr= rv rw rx )r; r rv rw rx __class__s r< r= zTestCase.__init__ s; $$$%:"!2 0 r> r c dS )zgThis method is deprecated and exists only for backward
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de3e'e:e#e f de3e'e de3e"e#e f de;d e;d e8d e;d e;d e;d!e;d"dfd#ZdJd%Z?d&e#d'e*e#ge;f fd(Z@dJd)ZAdJd*ZBdKd+ZCd,e3eDeE d-e3eE d.e3eF d"dfd/ZGd0e d&e#d1e'e# d"e;fd2ZHd3e(d"e;fd4ZId5e(d"eJe$e(e)e+f fd6ZKd7eLe#e(f d"dfd8ZMdJd9ZNdJd:ZOdLd;e+d"dfd<ZPdJd=ZQd> ZRdJd?ZSdJd@ZTdJdAZUdBe"e#e+f d"e"e#e+f fdCZVdLd;e+fdDZWdMdJdEZXeYdF ZZdJdGZ[dJdHZ\dJdIZ] xZ^S )Nr at
Instantiate a stub creator to bind and un-bind the file-related modules to
the :py:mod:`pyfakefs` fake modules.
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:py:class:`Patcher` also works as a context manager for other tests::
with Patcher():
doStuff()
Nr/ r )_pydevd_pydevd_pydev__jb_)r _jb_runner_toolsCACHED_MODULES
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Args:
additional_skip_names: names of modules where no module
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may be used.
modules_to_reload: A list of modules that need to be reloaded
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.. caution:: Reloading modules may have unwanted side effects.
modules_to_patch: A dictionary of fake modules mapped to the
fully qualified patched module names. Can be used to add
patching of modules not provided by `pyfakefs`.
allow_root_user: If `True` (default), if the test is run as root
user, the user in the fake file system is also considered a
root user, otherwise it is always considered a regular user.
use_known_patches: If `True` (the default), some patches for commonly
used packages are applied which make them usable with pyfakefs.
patch_open_code: If `True`, `io.open_code` is patched. The default
is not to patch it, as it mostly is used to load compiled
modules that are not in the fake file system.
patch_default_args: If `True`, default arguments are checked for
file system functions, which are patched. This check is
expansive, so it is off by default.
use_cache: If `True` (default), patched and non-patched modules are
cached between tests for performance reasons. As this is a new
feature, this argument allows to turn it off in case it
causes any problems.
use_dynamic_patch: If `True`, dynamic patching after setup is used
(for example for modules loaded locally inside of functions).
Can be switched off if it causes unwanted side effects.
r Nz{Nested fake filesystem invocation using custom arguments - using the existing fake filesystem, discarding custom arguments! c g | ]E}t j | rt t | j nt t
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r r r r r r s r< clear_fs_cachezPatcher.clear_fs_cache s4 !UU !# r> c 8 | j dS )z5Clear the module cache (convenience instance method).N)r r r: s r< r zPatcher.clear_cache
s %%'''''r> rW handlerc || j |< dS )aQ Register a handler for cleaning up a module after it had been loaded by
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handler: A callable that may do any module cleanup, or do nothing
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N)r )r; rW r s r< register_cleanup_handlerz Patcher.register_cleanup_handler s '. d###r> c dt fd}dt fd}t j t j t
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ddfdZ dS ) PausezSimple context manager that allows to pause/resume patching the
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NzInvalid argument - should be of type "fake_filesystem_unittest.Patcher", "fake_filesystem_unittest.TestCase" or "fake_filesystem.FakeFilesystem")
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