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This is raised when a test calls requires() for a resource that has not be enabled. It is used to distinguish between expected and unexpected skips. N)rP rQ rR rS rT rT rT rU r r s Tc c s= | r4 t j � � t j d d t � d VWd QXn d Vd S)z�Context manager to suppress package and module deprecation warnings when importing them. If ignore is False, this context manager has no effect. �ignorez.+ (module|package)N)�warnings�catch_warnings�filterwarnings�DeprecationWarning)rV rT rT rU �_ignore_deprecated_importsz s r[ F� required_onc C s� t | � �q y t j | � SWnX t k rx } z8 t j j t | � � rQ � n t j t | � � � WYd d } ~ Xn XWd QXd S)ac Import and return the module to be tested, raising SkipTest if it is not available. If deprecated is True, any module or package deprecation messages will be suppressed. If a module is required on a platform but optional for others, set required_on to an iterable of platform prefixes which will be compared against sys.platform. N) r[ � importlibr � ImportError�sys�platform� startswith�tuple�unittest�SkipTest�str)�name� deprecatedr\ �msgrT rT rU r � s c C s� | t j k r& t | � t j | =n xT t t j � D]C } | | k s[ | j | d � r6 t j | | | <t j | =q6 q6 Wd S)zyHelper function to save and remove a module from sys.modules Raise ImportError if the module can't be imported. �.N)r_ �modules� __import__�listra )rf � orig_modules�modnamerT rT rU �_save_and_remove_module� s ro c C sG d } y t j | | | <Wn t k r5 d } Yn Xd t j | <| S)z�Helper function to save and block a module in sys.modules Return True if the module was in sys.modules, False otherwise. TFN)r_ rj �KeyError)rf rm ZsavedrT rT rU �_save_and_block_module� s rq c C s | r t j Sd d � S)z�Decorator to mark a test that is known to be broken in some cases Any use of this decorator should have a comment identifying the associated tracker issue. c S s | S)NrT )�frT rT rU �<lambda>� s z$anticipate_failure.<locals>.<lambda>)rc ZexpectedFailure)Z conditionrT rT rU r6 � s c C sn | d k r d } n t j j t j j t j j t � � � } | j d | d | d | � } | j | � | S)z�Generic load_tests implementation for simple test packages. Most packages can implement load_tests using this function as follows: def load_tests(*args): return load_package_tests(os.path.dirname(__file__), *args) Nztest*Z start_dirZ top_level_dir�pattern)�os�path�dirname�__file__ZdiscoverZaddTests)Zpkg_dir�loaderZstandard_testsrt Ztop_dirZ package_testsrT rT rU r7 � s c C s� t | � �� i } g } t | | � z� ya x | D] } t | | � q3 Wx- | D]% } t | | � sQ | j | � qQ qQ Wt j | � } Wn t k r� d } Yn XWd x' | j � D] \ } } | t j | <q� Wx | D] } t j | =q� WX| SWd QXd S)a� Import and return a module, deliberately bypassing sys.modules. This function imports and returns a fresh copy of the named Python module by removing the named module from sys.modules before doing the import. Note that unlike reload, the original module is not affected by this operation. *fresh* is an iterable of additional module names that are also removed from the sys.modules cache before doing the import. *blocked* is an iterable of module names that are replaced with None in the module cache during the import to ensure that attempts to import them raise ImportError. The named module and any modules named in the *fresh* and *blocked* parameters are saved before starting the import and then reinserted into sys.modules when the fresh import is complete. Module and package deprecation messages are suppressed during this import if *deprecated* is True. This function will raise ImportError if the named module cannot be imported. N) r[ ro rq �appendr] r r^ �itemsr_ rj ) rf ZfreshZblockedrg rm Znames_to_removeZ fresh_nameZ blocked_nameZ fresh_moduleZ orig_name�moduleZname_to_removerT rT rU r � s$ c C sI y t | | � } Wn+ t k r@ t j d | | f � � Yn X| Sd S)z?Get an attribute, raising SkipTest if AttributeError is raised.z object %r has no attribute %rN)�getattr�AttributeErrorrc rd )�objrf Z attributerT rT rU r2 s � c C s | a d S)N)�_original_stdout)�stdoutrT rT rU r s c C s t p t j S)N)r� r_ r� rT rT rT rU r ! s c C s' y t j | =Wn t k r" Yn Xd S)N)r_ rj rp )rf rT rT rU r $ s �winc C s� | | � | r | } n$ t j j | � \ } } | p: d } d } xR | d k r� t j | � } | rm | n | | k s} d St j | � | d 9} qF Wt j d | t d d �d S)Nri g����MbP?g �?� z)tests may fail, delete still pending for � stacklevel� ) ru rv �split�listdir�time�sleeprW �warn�RuntimeWarning)�func�pathname�waitallrw rf �timeout�LrT rT rU �_waitfor+ s r� c C s t t j | � d S)N)r� ru r )�filenamerT rT rU �_unlinkL s r� c C s t t j | � d S)N)r� ru �rmdir)rw rT rT rU �_rmdirO s r� c s9 � f d d � � t � | d d �t t j | � d S)Nc s� x� t j | � D]� } t j j | | � } y t j | � j } WnH t k r� } z( t d | | f d t j �d } WYd d } ~ Xn Xt j | � r� t � | d d �t j | � q t j | � q Wd S)Nz-support.rmtree(): os.lstat(%r) failed with %s�filer r� T)ru r� rv �join�lstat�st_mode�OSError�printr_ � __stderr__�stat�S_ISDIRr� r� r )rv rf �fullname�mode�exc)� _rmtree_innerrT rU r� S s z _rmtree.<locals>._rmtree_innerr� T)r� ru r� )rv rT )r� rU �_rmtreeR s r� c C s- y t | � Wn t t f k r( Yn Xd S)N)r� �FileNotFoundError�NotADirectoryError)r� rT rT rU r h s c C s' y t | � Wn t k r" Yn Xd S)N)r� r� )rw rT rT rU r� n s r� c C s' y t | � Wn t k r" Yn Xd S)N)r� r� )rv rT rT rU r t s c C si t j j | � } t j j t j j | � � } t j j | | t rK d n d � } t j | | � | S)al Move a PEP 3147 pyc/pyo file to its legacy pyc/pyo location. The choice of .pyc or .pyo extension is done based on the __debug__ flag value. :param source: The file system path to the source file. The source file does not need to exist, however the PEP 3147 pyc file must exist. :return: The file system path to the legacy pyc file. �c�o) r] �util�cache_from_sourceru rv rw �abspathr� � __debug__�rename)�sourceZpyc_fileZup_oneZ legacy_pycrT rT rU �make_legacy_pycz s %r� c C s� t | � x~ t j D]s } t j j | | d � } t | d � t | d � t t j j | d d �� t t j j | d d �� q Wd S)z�'Forget' a module was ever imported. This removes the module from sys.modules and deletes any PEP 3147 or legacy .pyc and .pyo files. z.pyr� r� �debug_overrideTFN) r r_ rv ru r� r r] r� r� )rn rw r� rT rT rU r � s c s� t t d � r t j Sd } t j j d � r d d l � d d l � d } d } G� f d d � d � j � } � j j } | j � } | s� � j � � n | � } � j j � } | j | | � j | � � j | � � j | � � } | s� j � � n t | j | @� s�d } q�n� t j d k r�d d l m } m � m } m } d d l m } | j | d � � } | j � d k r�d } q�G� f d d � d | � } | � } | | � } | j | � d k s�| j | � d k r�d } q�n | s�y1 d d l m } | � } | j � | j � Wq�t! k r�} zU t" | � } t# | � d k ry| d d � d } n d j$ t% | � j& | � } WYd d } ~ Xq�Xn | t _' | t _ t j S)N�resultr� r r� c sC e Z d Z d � j j f d � j j f d � j j f g Z d S)z*_is_gui_available.<locals>.USEROBJECTFLAGSZfInheritZ fReserved�dwFlagsN)rP rQ rR �wintypesZBOOL�DWORD�_fields_rT )�ctypesrT rU �USEROBJECTFLAGS� s r� z,gui not available (WSF_VISIBLE flag not set)�darwin)�cdll�c_int�pointer� Structure)� find_libraryZApplicationServicesz0gui tests cannot run without OS X window managerc s( e Z d Z d � f d � f g Z d S)z._is_gui_available.<locals>.ProcessSerialNumberZ highLongOfPSNZ lowLongOfPSNN)rP rQ rR r� rT )r� rT rU �ProcessSerialNumber� s r� z#cannot run without OS X gui process)�Tk�2 z [...]z Tk unavailable due to {}: {})(�hasattr�_is_gui_availabler� r_ r` ra r� Zctypes.wintypesr� �windllZuser32ZGetProcessWindowStationZWinErrorr� r� ZGetUserObjectInformationWZbyref�sizeof�boolr� r� r� r� Z ctypes.utilr� Z LoadLibraryZCGMainDisplayIDZGetCurrentProcessZSetFrontProcessZtkinterr� �updateZdestroy� Exceptionre �len�format�typerP �reason)r� Z UOI_FLAGSZ WSF_VISIBLEr� Zdll�hZuofZneeded�resr� r� r� r� Z app_servicesr� ZpsnZpsn_pr� �root�eZ err_stringrT )r� r� rU r� � sf " r� c C s t d k p | t k S)z�Test whether a resource is enabled. Known resources are set by regrtest.py. If not running under regrtest.py, all resources are assumed enabled unless use_resources has been set. N)r )�resourcerT rT rU r � s c C s` | d k r( t � r( t t j � � n t | � s\ | d k rM d | } n t | � � n d S)z@Raise ResourceDenied if the specified resource is not available.�guiNz"Use of the %r resource not enabled)r� r r� r )r� rh rT rT rU r � s c s � � f d d � } | S)z�Decorator raising SkipTest if the OS is `sysname` and the version is less than `min_version`. For example, @_requires_unix_version('FreeBSD', (7, 2)) raises SkipTest if the FreeBSD version is less than 7.2. c s4 t j � � � � � f d d � � } � | _ | S)Nc s� t j � � k r� t j � j d d � d } y" t t t | j d � � � } Wn t k rd Yq� X| � k r� d j t t � � � } t j d � | | f � � q� n � | | � S)N�-r� r ri z(%s version %s or higher required, not %s) r` �system�releaser� rb �map�int� ValueErrorr� re rc rd )�args�kw� version_txt�version�min_version_txt)r� � min_version�sysnamerT rU �wrapper� s " z:_requires_unix_version.<locals>.decorator.<locals>.wrapper)� functools�wrapsr� )r� r� )r� r� )r� rU � decorator� s ' z)_requires_unix_version.<locals>.decoratorrT )r� r� r� rT )r� r� rU �_requires_unix_version� s r� c G s t d | � S)z�Decorator raising SkipTest if the OS is FreeBSD and the FreeBSD version is less than `min_version`. For example, @requires_freebsd_version(7, 2) raises SkipTest if the FreeBSD version is less than 7.2. ZFreeBSD)r� )r� rT rT rU r s c G s t d | � S)z�Decorator raising SkipTest if the OS is Linux and the Linux version is less than `min_version`. For example, @requires_linux_version(2, 6, 32) raises SkipTest if the Linux version is less than 2.6.32. ZLinux)r� )r� rT rT rU r s c s � f d d � } | S)z�Decorator raising SkipTest if the OS is Mac OS X and the OS X version if less than min_version. For example, @requires_mac_ver(10, 5) raises SkipTest if the OS X version is lesser than 10.5. c s1 t j � � � � f d d � � } � | _ | S)Nc s� t j d k r� t j � d } y" t t t | j d � � � } Wn t k rU Yq� X| � k r� d j t t � � � } t j d | | f � � q� n � | | � S)Nr� r ri z&Mac OS X %s or higher required, not %s) r_ r` Zmac_verrb r� r� r� r� r� re rc rd )r� r� r� r� r� )r� r� rT rU r� * s " z4requires_mac_ver.<locals>.decorator.<locals>.wrapper)r� r� r� )r� r� )r� )r� rU r� ) s $ z#requires_mac_ver.<locals>.decoratorrT )r� r� rT )r� rU r! " s z 127.0.0.1z::1c C s/ t j | | � } t | � } | j � ~ | S)a� Returns an unused port that should be suitable for binding. This is achieved by creating a temporary socket with the same family and type as the 'sock' parameter (default is AF_INET, SOCK_STREAM), and binding it to the specified host address (defaults to 0.0.0.0) with the port set to 0, eliciting an unused ephemeral port from the OS. The temporary socket is then closed and deleted, and the ephemeral port is returned. Either this method or bind_port() should be used for any tests where a server socket needs to be bound to a particular port for the duration of the test. Which one to use depends on whether the calling code is creating a python socket, or if an unused port needs to be provided in a constructor or passed to an external program (i.e. the -accept argument to openssl's s_server mode). Always prefer bind_port() over find_unused_port() where possible. Hard coded ports should *NEVER* be used. As soon as a server socket is bound to a hard coded port, the ability to run multiple instances of the test simultaneously on the same host is compromised, which makes the test a ticking time bomb in a buildbot environment. On Unix buildbots, this may simply manifest as a failed test, which can be recovered from without intervention in most cases, but on Windows, the entire python process can completely and utterly wedge, requiring someone to log in to the buildbot and manually kill the affected process. (This is easy to reproduce on Windows, unfortunately, and can be traced to the SO_REUSEADDR socket option having different semantics on Windows versus Unix/Linux. On Unix, you can't have two AF_INET SOCK_STREAM sockets bind, listen and then accept connections on identical host/ports. An EADDRINUSE OSError will be raised at some point (depending on the platform and the order bind and listen were called on each socket). However, on Windows, if SO_REUSEADDR is set on the sockets, no EADDRINUSE will ever be raised when attempting to bind two identical host/ports. When accept() is called on each socket, the second caller's process will steal the port from the first caller, leaving them both in an awkwardly wedged state where they'll no longer respond to any signals or graceful kills, and must be forcibly killed via OpenProcess()/TerminateProcess(). The solution on Windows is to use the SO_EXCLUSIVEADDRUSE socket option instead of SO_REUSEADDR, which effectively affords the same semantics as SO_REUSEADDR on Unix. Given the propensity of Unix developers in the Open Source world compared to Windows ones, this is a common mistake. A quick look over OpenSSL's 0.9.8g source shows that they use SO_REUSEADDR when openssl.exe is called with the 's_server' option, for example. See http://bugs.python.org/issue2550 for more info. The following site also has a very thorough description about the implications of both REUSEADDR and EXCLUSIVEADDRUSE on Windows: http://msdn2.microsoft.com/en-us/library/ms740621(VS.85).aspx) XXX: although this approach is a vast improvement on previous attempts to elicit unused ports, it rests heavily on the assumption that the ephemeral port returned to us by the OS won't immediately be dished back out to some other process when we close and delete our temporary socket but before our calling code has a chance to bind the returned port. We can deal with this issue if/when we come across it. )�socketr= �close)�familyZsocktypeZtempsock�portrT rT rU r< D s 8 c C s | j t j k r� | j t j k r� t t d � rc | j t j t j � d k rc t d � � qc n t t d � r� d t j k r� y1 | j t j t j � d k r� t d � � n Wq� t k r� Yq� Xn t t d � r� | j t j t j d � q� n | j | d f � | j � d } | S) a% Bind the socket to a free port and return the port number. Relies on ephemeral ports in order to ensure we are using an unbound port. This is important as many tests may be running simultaneously, especially in a buildbot environment. This method raises an exception if the sock.family is AF_INET and sock.type is SOCK_STREAM, *and* the socket has SO_REUSEADDR or SO_REUSEPORT set on it. Tests should *never* set these socket options for TCP/IP sockets. The only case for setting these options is testing multicasting via multiple UDP sockets. Additionally, if the SO_EXCLUSIVEADDRUSE socket option is available (i.e. on Windows), it will be set on the socket. This will prevent anyone else from bind()'ing to our host/port for the duration of the test. � SO_REUSEADDRr� zHtests should never set the SO_REUSEADDR socket option on TCP/IP sockets!� SO_REUSEPORTZWITHIN_PYTHON_RPM_BUILDzHtests should never set the SO_REUSEPORT socket option on TCP/IP sockets!�SO_EXCLUSIVEADDRUSEr )r� r� �AF_INETr� � SOCK_STREAMr� Z getsockoptZ SOL_SOCKETr� r ru �environr� r� Z setsockoptr� �bindZ getsockname)�sock�hostr� rT rT rU r= � s $ c C sy t j ru d } zL y3 t j t j t j � } | j t d f � d SWn t k rY Yn XWd | rq | j � n Xn d S)z+Check whether IPv6 is enabled on this host.Nr TF)r� Zhas_ipv6ZAF_INET6r� r� �HOSTv6r� r� )r� rT rT rU �_is_ipv6_enabled� s r� c s% t j � � � f d d � � } | S)z5Skip the test on TLS certificate validation failures.c sd y � | | � WnL t k r_ } z, d t | � k rJ t j d � � n � WYd d } ~ Xn Xd S)NZCERTIFICATE_VERIFY_FAILEDz.system does not contain necessary certificates)�IOErrorre rc rd )r� �kwargsr� )rr rT rU �dec� s z&system_must_validate_cert.<locals>.dec)r� r� )rr r� rT )rr rU �system_must_validate_cert� s ! r� r� i � ZdoubleZIEEEz test requires IEEE 754 doublesz requires zlibz requires gzipz requires bz2z requires lzma�javaz$testz@testz {}_{}_tmp� æ� İ� Ł� φ� К� א� ،� ت� ก� � €u -àòɘŁğr� ZNFD�nt�cer� u -共Ł♡ͣ�ztWARNING: The filename %r CAN be encoded by the filesystem encoding (%s). Unicode filename tests may not be effective� �s -��surrogateescape� �w�� ���� �� ��r� c c s� d } | d k r9 t j � } d } t j j | � } nR y t j | � d } Wn8 t k r� | sl � n t j d | t d d �Yn Xz | VWd | r� t j | � n Xd S)a� Return a context manager that creates a temporary directory. Arguments: path: the directory to create temporarily. If omitted or None, defaults to creating a temporary directory using tempfile.mkdtemp. quiet: if False (the default), the context manager raises an exception on error. Otherwise, if the path is specified and cannot be created, only a warning is issued. FNTz+tests may fail, unable to create temp dir: r� � ) �tempfileZmkdtempru rv �realpath�mkdirr� rW r� r� �shutilr )rv �quietZ dir_createdrT rT rU �temp_dirk s" r c c s| t j � } y t j | � Wn8 t k rW | s9 � n t j d | t d d �Yn Xz t j � VWd t j | � Xd S)ag Return a context manager that changes the current working directory. Arguments: path: the directory to use as the temporary current working directory. quiet: if False (the default), the context manager raises an exception on error. Otherwise, it issues only a warning and keeps the current working directory the same. z)tests may fail, unable to change CWD to: r� r N)ru �getcwd�chdirr� rW r� r� )rv r Z saved_dirrT rT rU � change_cwd� s r Ztempcwdc c sB t d | d | � �' } t | d | �� } | VWd QXWd QXd S)a� Context manager that temporarily creates and changes the CWD. The function temporarily changes the current working directory after creating a temporary directory in the current directory with name *name*. If *name* is None, the temporary directory is created using tempfile.mkdtemp. If *quiet* is False (default) and it is not possible to create or change the CWD, an error is raised. If *quiet* is True, only a warning is raised and the original CWD is used. rv r N)r r )rf r Z temp_pathZcwd_dirrT rT rU r � s �umaskc c s- t j | � } z d VWd t j | � Xd S)z8Context manager that temporarily sets the process umask.N)ru r )r ZoldmaskrT rT rU r? � s �datac C s� t j j | � r | S| d k r: t j j | | � } n t g t j } x9 | D]1 } t j j | | � } t j j | � rQ | SqQ W| S)a[ Try to find a file on sys.path or in the test directory. If it is not found the argument passed to the function is returned (this does not necessarily signal failure; could still be the legitimate path). Setting *subdir* indicates a relative path to use to find the file rather than looking directly in the path directories. N)ru rv �isabsr� � TEST_HOME_DIRr_ �exists)r� Zsubdirrv Zdn�fnrT rT rU r � s c C s4 t j | t j t j Bt j B� } t j | � d S)z>Create an empty file. If the file already exists, truncate it.N)ru �open�O_WRONLY�O_CREAT�O_TRUNCr� )r� �fdrT rT rU r � s #c C s< t | j � � } d d � | D� } d j | � } d | S)z%Like repr(dict), but in sorted order.c S s g | ] } d | � q S)z%r: %rrT )�.0ZpairrT rT rU � <listcomp>� s z sortdict.<locals>.<listcomp>z, z{%s})�sortedr{ r� )�dictr{ Z reprpairsZ withcommasrT rT rU rN � s c C s9 t t d � } z | j � SWd | j � t t � Xd S)z` Create an invalid file descriptor by opening and closing a file and return its fd. �wbN)r r �filenor� r )r� rT rT rU � make_bad_fd� s r' c C s | j t t | d d � d S)Nz <test string>�exec)Z assertRaises� SyntaxError�compile)ZtestcaseZ statementrT rT rU r" � s c s� d d l } d d l } � j d d � � | j j | � d j d � d } t j j t | � } � � � f d d � } t j j | � r� | | � } | d k r� | St | � n t d � t d | d t � �| j j � } t r� | j j d � n | j | d d �} t rF| j j d � d k rFt j d | � } n zN t | d � �9 } | j � } x# | r�| j | � | j � } qjWWd QXWd | j � X| | � } | d k r�| St d | � � d S)Nr �checkr� �/r� c sM t | � � � } � d k r" | S� | � r? | j d � | S| j � d S)Nr )r �seekr� )r rr )r� r+ r� rT rU �check_valid_file s z*open_urlresource.<locals>.check_valid_fileZurlfetchz fetching %s ...r� �Accept-Encoding�gzipr� � zContent-EncodingZfileobjr% zinvalid resource %r���)r/ zgzip) Zurllib.requestZ urllib.parse�pop�parseZurlparser� ru rv r� � TEST_DATA_DIRr r r r� r ZrequestZ build_openerr0 Z addheadersrz r Zheaders�getZGzipFile�read�writer� r ) Zurlr� r� �urllibr� r r. rr Zopener�out�srT )r� r+ r� rU r> � s: # c @ sL e Z d Z d Z d d � Z d d � Z e d d � � Z d d � Z d S) �WarningsRecorderzyConvenience wrapper for the warnings list returned on entry to the warnings.catch_warnings() context manager. c C s | | _ d | _ d S)Nr )� _warnings�_last)�selfZ warnings_listrT rT rU �__init__0 s zWarningsRecorder.__init__c C s\ t | j � | j k r, t | j d | � S| t j j k rB d St d | | f � � d S)Nr� z%r has no attribute %rr2 )r� r= r> r} rW �WarningMessage�_WARNING_DETAILSr~ )r? �attrrT rT rU � __getattr__4 s z WarningsRecorder.__getattr__c C s | j | j d � S)N)r= r> )r? rT rT rU rW ; s zWarningsRecorder.warningsc C s t | j � | _ d S)N)r� r= r> )r? rT rT rU �reset? s zWarningsRecorder.resetN) rP rQ rR rS r@ rD �propertyrW rE rT rT rT rU r< , s r< c c sl t j d � } | j j d � } | r4 | j � n t j d d � �& } t j d j d � t | � VWd QXt | � } g } x� | D]� \ } } d } xg | d d � D]U } | j } t j | t | � t j � r� t | j | � r� d } | j | � q� q� W| r� | r� | j | | j f � q� q� W| rKt d | d � � n | rht d | d � � n d S) z�Catch the warnings, then check if all the expected warnings have been raised and re-raise unexpected warnings. If 'quiet' is True, only re-raise the unexpected warnings. r� Z__warningregistry__�recordTrW �alwaysNFzunhandled warning %sr z)filter (%r, %s) did not catch any warning)r_ � _getframe� f_globalsr6 �clearrW rX rj � simplefilterr< rl �message�re�matchre �I� issubclass� __class__�removerz rP �AssertionError) �filtersr Zframe�registry�wZreraiseZmissingrh �cat�seenZwarningrT rT rU �_filterwarningsC s0 rZ c O sI | j d � } | s< d t f f } | d k r< d } q< n t | | � S)a� Context manager to silence warnings. Accept 2-tuples as positional arguments: ("message regexp", WarningCategory) Optional argument: - if 'quiet' is True, it does not fail if a filter catches nothing (default True without argument, default False if some filters are defined) Without argument, it defaults to: check_warnings(("", Warning), quiet=True) r � NT)r6 �WarningrZ )rU r� r rT rT rU rF j s c @ s: e Z d Z d Z d d � Z d d � Z d d � Z d S) r a, Context manager to force import to return a new module reference. This is useful for testing module-level behaviours, such as the emission of a DeprecationWarning on import. Use like this: with CleanImport("foo"): importlib.import_module("foo") # new reference c G so t j j � | _ xV | D]N } | t j k r t j | } | j | k rZ t j | j =n t j | =q q Wd S)N)r_ rj �copy�original_modulesrP )r? Z module_namesZ module_namer| rT rT rU r@ � s zCleanImport.__init__c C s | S)NrT )r? rT rT rU � __enter__� s zCleanImport.__enter__c G s t j j | j � d S)N)r_ rj r� r^ )r? � ignore_excrT rT rU �__exit__� s zCleanImport.__exit__N)rP rQ rR rS r@ r_ ra rT rT rT rU r � s c @ s� e Z d Z d Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d S)rG z_Class to help protect the environment variable properly. Can be used as a context manager.c C s t j | _ i | _ d S)N)ru r� �_environ�_changed)r? rT rT rU r@ � s z EnvironmentVarGuard.__init__c C s | j | S)N)rb )r? �envvarrT rT rU � __getitem__� s z EnvironmentVarGuard.__getitem__c C s< | | j k r+ | j j | � | j | <n | | j | <d S)N)rc rb r6 )r? rd �valuerT rT rU � __setitem__� s z EnvironmentVarGuard.__setitem__c C sK | | j k r+ | j j | � | j | <n | | j k rG | j | =n d S)N)rc rb r6 )r? rd rT rT rU � __delitem__� s z EnvironmentVarGuard.__delitem__c C s | j j � S)N)rb �keys)r? rT rT rU ri � s zEnvironmentVarGuard.keysc C s t | j � S)N)�iterrb )r? rT rT rU �__iter__� s z EnvironmentVarGuard.__iter__c C s t | j � S)N)r� rb )r? rT rT rU �__len__� s zEnvironmentVarGuard.__len__c C s | | | <d S)NrT )r? rd rf rT rT rU �set� s zEnvironmentVarGuard.setc C s | | =d S)NrT )r? rd rT rT rU �unset� s zEnvironmentVarGuard.unsetc C s | S)NrT )r? rT rT rU r_ � s z EnvironmentVarGuard.__enter__c G sh xU | j j � D]D \ } } | d k rG | | j k rT | j | =qT q | | j | <q W| j t _ d S)N)rc r{ rb ru r� )r? r` �k�vrT rT rU ra � s z EnvironmentVarGuard.__exit__N)rP rQ rR rS r@ re rg rh ri rk rl rm rn r_ ra rT rT rT rU rG � s c @ s: e Z d Z d Z d d � Z d d � Z d d � Z d S) � DirsOnSysPatha� Context manager to temporarily add directories to sys.path. This makes a copy of sys.path, appends any directories given as positional arguments, then reverts sys.path to the copied settings when the context ends. Note that *all* sys.path modifications in the body of the context manager, including replacement of the object, will be reverted at the end of the block. c G s6 t j d d � | _ t j | _ t j j | � d S)N)r_ rv �original_value�original_object�extend)r? �pathsrT rT rU r@ � s zDirsOnSysPath.__init__c C s | S)NrT )r? rT rT rU r_ � s zDirsOnSysPath.__enter__c G s& | j t _ | j t j d d � <d S)N)rs r_ rv rr )r? r` rT rT rU ra � s zDirsOnSysPath.__exit__N)rP rQ rR rS r@ r_ ra rT rT rT rU rq � s rq c @ sC e Z d Z d Z d d � Z d d � Z d d d d d � Z d S) r# z�Raise ResourceDenied if an exception is raised while the context manager is in effect that matches the specified exception and attributes.c K s | | _ | | _ d S)N)r� �attrs)r? r� r� rT rT rU r@ � s zTransientResource.__init__c C s | S)NrT )r? rT rT rU r_ � s zTransientResource.__enter__Nc C s} | d k ry t | j | � ry xX | j j � D]8 \ } } t | | � sM Pn t | | � | k r. Pq. q. Wt d � � n d S)z�If type_ is a subclass of self.exc and value has attributes matching self.attrs, raise ResourceDenied. Otherwise let the exception propagate (if any).Nz%an optional resource is not available)rQ r� rv r{ r� r} r )r? Ztype_rf � tracebackrC Z attr_valuerT rT rU ra � s zTransientResource.__exit__)rP rQ rR rS r@ r_ ra rT rT rT rU r# � s �errnor� g >@�errnosc # s� d d d! d" d# g } d% d' d) d+ d, g } t d | � � | � g � � su d d � | D� � d d � | D� � n � � � f d d � } t j � } z'y% | d k r� t j | � n d VWn� t j k r} z2 t r� t j j � j d d � n � | � WYd d } ~ Xn� t k r�} z� xr | j } t | � d k rht | d t � rh| d } q-t | � d k r�t | d t � r�| d } q-Pq-W| | � � WYd d } ~ Xn XWd t j | � Xd S)-z�Return a context manager that raises ResourceDenied when various issues with the Internet connection manifest themselves as exceptions.� ECONNREFUSED�o � ECONNRESET�h � EHOSTUNREACH�q � ENETUNREACH�e � ETIMEDOUT�n � EAI_AGAINr �EAI_FAILr� � EAI_NONAMEr� � EAI_NODATA� � WSANO_DATA�* z Resource %r is not availablec S s( g | ] \ } } t t | | � � q SrT )r} rx )r! rf �numrT rT rU r" ) s z&transient_internet.<locals>.<listcomp>c S s( g | ] \ } } t t | | � � q SrT )r} r� )r! rf r� rT rT rU r" + s c s� t | d d � } t | t j � s� t | t j � rB | � k s� t | t j j � rv d | j k oq d k n s� t | t j j � r� d | j k s� d | j k s� | � k r� t s� t j j � j d d � n � | � n d S)Nrx i� iW �ConnectionRefusedError� TimeoutErrorr � )r} � isinstancer� r� Zgaierrorr9 �errorZ HTTPError�codeZURLErrorr� r r_ �stderrr8 r� )�err�n)�captured_errnos�denied� gai_errnosrT rU � filter_error. s z(transient_internet.<locals>.filter_errorNr r� r� )rz r{ )z ECONNRESETr} )r~ r )r� r� )z ETIMEDOUTr� ���)r� r� ���)r� r� ���)r� r� ���)r� r� )r� r� )r r� ZgetdefaulttimeoutZsetdefaulttimeout�nntplibZNNTPTemporaryErrorr r_ r� r8 r� r� r� r� ) Z resource_namer� ry Zdefault_errnosZdefault_gai_errnosr� Z old_timeoutr� �arT )r� r� r� rU r' sN % % c c s[ d d l } t t | � } t t | | j � � z t t | � VWd t t | | � Xd S)z�Return a context manager used by captured_stdout/stdin/stderr that temporarily replaces the sys stream *stream_name* with a StringIO.r N)�ior} r_ �setattr�StringIO)Z stream_namer� Z orig_stdoutrT rT rU �captured_output[ s r� c C s t d � S)z�Capture the output of sys.stdout: with captured_stdout() as stdout: print("hello") self.assertEqual(stdout.getvalue(), "hello\n") r� )r� rT rT rT rU r g s c C s t d � S)z�Capture the output of sys.stderr: with captured_stderr() as stderr: print("hello", file=sys.stderr) self.assertEqual(stderr.getvalue(), "hello\n") r� )r� rT rT rT rU r p s c C s t d � S)a Capture the input to sys.stdin: with captured_stdin() as stdin: stdin.write('hello\n') stdin.seek(0) # call test code that consumes from sys.stdin captured = input() self.assertEqual(captured, "hello") �stdin)r� rT rT rT rU r y s c C s8 t j � t r t j d � n t j � t j � d S)a� Force as many objects as possible to be collected. In non-CPython implementations of Python, this is needed because timely deallocation is not guaranteed by the garbage collector. (Even in CPython this can be the case in case of reference cycles.) This means that __del__ methods may be called later than expected and weakrefs may remain alive for longer than expected. This function tries its best to force all garbage objects to disappear. g�������?N)�gcZcollectr8 r� r� rT rT rT rU � gc_collect� s r� c c s: t j � } t j � z d VWd | r5 t j � n Xd S)N)r� � isenabled�disable�enable)Zhave_gcrT rT rU � disable_gc� s r� c C sT t j d � p d } d } x, | j � D] } | j d � r( | } q( q( W| d k S)z,Find if Python was built with optimizations.� PY_CFLAGSr[ z-O�-O0�-Og)r[ r� r� )� sysconfig�get_config_varr� ra )ZcflagsZ final_optZoptrT rT rU �python_is_optimized� s r� ZnPZ0n�gettotalrefcountZ2PZ0Pr� c C s t j t | t � S)N)�struct�calcsize�_header�_align)�fmtrT rT rU � calcobjsize� s r� c C s t j t | t � S)N)r� r� �_vheaderr� )r� rT rT rU � calcvobjsize� s r� � � c C s� d d l } t j | � } t | � t k r: | j t @s_ t | � t k ro t | � j t @ro | | j 7} n d t | � | | f } | j | | | � d S)Nr z&wrong size for %s: got %d, expected %d) � _testcapir_ � getsizeofr� � __flags__�_TPFLAGS_HEAPTYPE�_TPFLAGS_HAVE_GCZSIZEOF_PYGC_HEADZ assertEqual)�testr� �sizer� r� rh rT rT rU � check_sizeof� s %r� c s � � f d d � } | S)Nc s4 � � � f d d � } � j | _ � j | _ | S)Nc s� y. d d l } t | � � } | j | � } Wn& t k rE � YnC d } } Yn2 Xx. � D]& } y | j | | � PWq^ Yq^ Xq^ Wz � | | � SWd | r� | r� | j | | � n Xd S)Nr )�localer} � setlocaler~ )r� �kwdsr� �categoryZ orig_locale�loc)�catstrr� �localesrT rU �inner� s$ z1run_with_locale.<locals>.decorator.<locals>.inner)rP rS )r� r� )r� r� )r� rU r� � s z"run_with_locale.<locals>.decoratorrT )r� r� r� rT )r� r� rU rH � s c s � f d d � } | S)Nc s1 � � f d d � } � j | _ � j | _ | S)Nc s� y t j } Wn! t k r0 t j d � � Yn Xd t j k rP t j d } n d } � t j d <| � z � | | � SWd | d k r� t j d =n | t j d <t j � Xd S)Nztzset requiredZTZ)r� �tzsetr~ rc rd ru r� )r� r� r� Zorig_tz)r� �tzrT rU r� � s z-run_with_tz.<locals>.decorator.<locals>.inner)rP rS )r� r� )r� )r� rU r� � s z run_with_tz.<locals>.decoratorrT )r� r� rT )r� rU rO � s c C s� i d d 6t d 6t d 6d t d 6} t j d | t j t j B� } | d k rg t d | f � � n t t | j d � � | | j d � j � � } | a | t k r� t } n | t d k r� t d | f � � n | a d S) Ni ro �m�g�tz(\d+(\.\d+)?) (K|M|G|T)b?$zInvalid memory limit %rr� r z$Memory limit %r too low to be useful)�_1M�_1GrN rO � IGNORECASE�VERBOSEr� r� �float�group�lower�real_max_memuse�MAX_Py_ssize_t�_2Gr )�limitZsizesr� ZmemlimitrT rT rU rL s 2 c @ s: e Z d Z d Z d d � Z d d � Z d d � Z d S) �_MemoryWatchdogz`An object which periodically watches the process' memory consumption and prints it out. c C s( d j d t j � � | _ d | _ d S)Nz/proc/{pid}/statm�pidF)r� ru �getpid�procfile�started)r? rT rT rU r@ 3 s z_MemoryWatchdog.__init__c C s� y t | j d � } WnO t k rg } z/ t j d j | � t � t j j � d SWYd d } ~ Xn Xt d � } t j t j | g d | d t j �| _ | j � d | _ d S)N�rz!/proc not available for stats: {}zmemory_watchdog.pyr� r� T)r r� r� rW r� r� r� r_ r� �flushr � subprocess�Popen� executableZDEVNULL� mem_watchdogr� r� )r? rr r� Zwatchdog_scriptrT rT rU �start7 s z_MemoryWatchdog.startc C s* | j r& | j j � | j j � n d S)N)r� r� Z terminate�wait)r? rT rT rU �stopF s z_MemoryWatchdog.stopN)rP rQ rR rS r@ r� r� rT rT rT rU r� . s r� c s � � � f d d � } | S)aA Decorator for bigmem tests. 'minsize' is the minimum useful size for the test (in arbitrary, test-interpreted units.) 'memuse' is the number of 'bytes per size' for the test, or a good estimate of it. if 'dry_run' is False, it means the test doesn't support dummy runs when -M is not specified. c s. � � � f d d � � � � _ � � _ � S)Nc s� � j } � j } t s! d } n | } t s4 � rb t | | k rb t j d | | d � � n t r� t r� t � t d j d | | d � � t � } | j � n d } z � | | � SWd | r� | j � n Xd S) Ni z'not enough memory: %.1fG minimum neededi r z* ... expected peak memory use: {peak:.1f}GZpeaki @i @) r� �memuser� rc rd r r� r� r� r� r� )r? r� r� �maxsizeZwatchdog)�dry_runrr r� rT rU r� W s* z.bigmemtest.<locals>.decorator.<locals>.wrapper)r� r� )rr )r� r� r� )rr r� rU r� V s z bigmemtest.<locals>.decoratorrT )r� r� r� r� rT )r� r� r� rU r/ L s !c s � f d d � } | S)z0Decorator for tests that fill the address space.c s^ t t k rP t d k r6 t d k r6 t j d � � qZ t j d t d � � n � | � Sd S) Nr� �? r� � z-not enough memory: try a 32-bit build insteadz'not enough memory: %.1fG minimum neededi r l l ���� l i @)r r� rc rd )r? )rr rT rU r� { s z!bigaddrspacetest.<locals>.wrapperrT )rr r� rT )rr rU r0 y s c @ s e Z d Z d d � Z d S)r( c C s t j � } | | � | S)N)rc Z TestResult)r? r� r� rT rT rU �run� s zBasicTestRunner.runN)rP rQ rR r� rT rT rT rU r( � s c C s | S)NrT )r rT rT rU �_id� s r� c C sP | d k r& t � r& t j t j � St | � r6 t St j d j | � � Sd S)Nr� z resource {0!r} is not enabled)r� rc �skipr� r r� r� )r� rT rT rU �requires_resource� s r� c C s t d d � | � S)z9 Decorator for tests only applicable on CPython. �cpythonT)� impl_detail)r� rT rT rU r1 � s c K s} t | � r t S| d k rp t | � \ } } | r= d } n d } t | j � � } | j d j | � � } n t j | � S)Nz*implementation detail not available on {0}z%implementation detail specific to {0}z or ) r9 r� � _parse_guardsr# ri r� r� rc r� )rh �guardsZ guardnames�defaultrT rT rU r� � s r� c C s8 | s i d d 6d f St | j � � d } | | f S)NTr� Fr )rl �values)r� Zis_truerT rT rU r� � s r� c K s. t | � \ } } | j t j � j � | � S)a5 This function returns True or False depending on the host platform. 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After that, any trace function is unset during the test to prevent unexpected refcounts caused by the trace function. )r� r1 )r� rT rT rU � refcount_test� s r� c C sr g } x\ | j D]Q } t | t j � rE t | | � | j | � q | | � r | j | � q q W| | _ d S)z>Recursively filter test cases in a suite based on a predicate.N)Z_testsr� rc � TestSuite� _filter_suiterz )�suiteZpredZnewtestsr� rT rT rU r� � s r� c C s� t r' t j t j d d d t �} n t � } | j | � } | j � s� t | j � d k r~ | j r~ | j d d } nL t | j � d k r� | j r� | j d d } n d } t s� | d 7} n t | � � n d S) z2Run tests from a unittest.TestSuite-derived class.� verbosityr� r r� r zmultiple errors occurredz!; run in verbose mode for detailsN) r rc ZTextTestRunnerr_ r� r r( r� Z wasSuccessfulr� �errorsZfailuresr )r� Zrunnerr� r� rT rT rU � _run_suite� s r c G s� t j t j f } t j � } x� | D]� } t | t � rx | t j k ri | j t j t j | � � q� t d � � q% t | | � r� | j | � q% | j t j | � � q% Wd d � } t | | � t | � d S)z1Run tests from unittest.TestCase-derived classes.z)str arguments must be keys in sys.modulesc S sJ t d k r d Sx3 | j � j d � D] } t j | t � r& d Sq& Wd S)NTri F)� match_tests�idr� �fnmatchZ fnmatchcase)r� rf rT rT rU � case_pred s z run_unittest.<locals>.case_predN) rc r� ZTestCaser� re r_ rj ZaddTestZ findTestCasesr� Z makeSuiter� r )ZclassesZ valid_typesr� �clsr rT rT rU r) � s c C s d S)z,Just used to check if docstrings are enabledNrT rT rT rT rU �_check_docstrings s r �win32�WITH_DOC_STRINGSztest requires docstringsc C s� d d l } | d k r! t } n d } | j | d | d | �\ } } | rg t d | | f � � n t r� t d | j | f � n | | f S)a Run doctest on the given module. 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If threading is unavailable this function does nothing. c s) t � } z � | � SWd t | � Xd S)N)rB rC )r� �key)r� rT rU r� � s z reap_threads.<locals>.decorator)r r� r� )r� r� rT )r� rU rD y s !c C s^ t t d � rZ d } xB y/ t j | t j � \ } } | d k rF Pn Wq PYq Xq Wn d S)z�Use this function at the end of test_main() whenever sub-processes are started. This will help ensure that no extra children (zombies) stick around to hog resources and create problems when looking for refleaks. �waitpidr� r Nr2 )r� ru r �WNOHANG)Z any_processr� ZstatusrT rT rU r@ � s c c s� t | � } g } zl y, x% | D] } | j � | j | � q WWn4 t rp t d t | � t | � f � n � Yn Xd VWd z� | r� | � n t j � } } x� t d d � D]� } | d 7} x. | D]& } | j t | t j � d � � q� Wd d � | D� } | sPn t r� t d t | � | f � q� q� WWd d d � | D� } | rt j t j � t d t | � � � n XXd S) Nz/Can't start %d threads, only %d threads startedr� r� �< g{�G�z�?c S s" g | ] } | j � r | � q SrT )�isAlive)r! r� rT rT rU r" � s z!start_threads.<locals>.<listcomp>z7Unable to join %d threads during a period of %d minutesc S s" g | ] } | j � r | � q SrT )r )r! r� rT rT rU r" � s zUnable to join %d threads)rl r� rz r r� r� r� r r� �max� faulthandlerZdump_tracebackr_ r� rT )ZthreadsZunlockr� r� ZendtimeZ starttimer� rT rT rU rE � s> $ c c s| t | | � rN t | | � } t | | | � z d VWd t | | | � Xn* t | | | � z d VWd t | | � Xd S)am Temporary swap out an attribute with a new object. Usage: with swap_attr(obj, "attr", 5): ... This will set obj.attr to 5 for the duration of the with: block, restoring the old value at the end of the block. If `attr` doesn't exist on `obj`, it will be created and then deleted at the end of the block. N)r� r} r� �delattr)r rC �new_val�real_valrT rT rU rJ � s c c s\ | | k r: | | } | | | <z d VWd | | | <Xn | | | <z d VWd | | =Xd S)ak Temporary swap out an item with a new object. Usage: with swap_item(obj, "item", 5): ... This will set obj["item"] to 5 for the duration of the with: block, restoring the old value at the end of the block. If `item` doesn't exist on `obj`, it will be created and then deleted at the end of the block. NrT )r �itemr r rT rT rU rI � s c C s t j d d | � j � } | S)z�Strip the stderr of a Python process from potential debug output emitted by the interpreter. This will typically be run on the result of the communicate() method of a subprocess.Popen object. s \[\d+ refs, \d+ blocks\]\r?\n?� )rN �sub�strip)r� rT rT rU �strip_python_stderr� s r$ c C s t j � S)znReturn a list of command-line arguments reproducing the current settings in sys.flags and sys.warnoptions.)r� Z _args_from_interpreter_flagsrT rT rT rU �args_from_interpreter_flags s r% c @ s@ e Z d Z d d � Z d d � Z d d � Z d d � Z d S) rA c C s# t j j j | d � | | _ d S)Nr )�logging�handlers�BufferingHandlerr@ �matcher)r? r) rT rT rU r@ s zTestHandler.__init__c C s d S)NFrT )r? rT rT rU � shouldFlush s zTestHandler.shouldFlushc C s$ | j | � | j j | j � d S)N)r� �bufferrz �__dict__)r? rG rT rT rU �emit s zTestHandler.emitc K s= d } x0 | j D]% } | j j | | � r d } Pq q W| S)zW Look for a saved dict whose keys/values match the supplied arguments. FT)r+ r) �matches)r? r� r� �drT rT rU r. s zTestHandler.matchesN)rP rQ rR r@ r* r- r. rT rT rT rU rA s c @ s. e Z d Z d Z d d � Z d d � Z d S) rK rh rM c K sS d } xF | D]> } | | } | j | � } | j | | | � s d } Pq q W| S)a. Try to match a single dict with the supplied arguments. Keys whose values are strings and which are in self._partial_matches will be checked for partial (i.e. substring) matches. You can extend this scheme to (for example) do regular expression matching, etc. TF)r6 � match_value)r? r/ r� r� ro rp �dvrT rT rU r. + s zMatcher.matchesc C sj t | � t | � k r! d } nE t | � t k sB | | j k rQ | | k } n | j | � d k } | S)zT Try to match a single stored value (dv) with a supplied value (v). Fr )r� re �_partial_matches�find)r? ro r1 rp r� rT rT rU r0 < s !zMatcher.match_valueN)zmsgzmessage)rP rQ rR r2 r. r0 rT rT rT rU rK ' s c C so t d k r t St d } y t j t | � d } Wn! t t t f k rW d } Yn Xt j | � | a | S)Nr TF)� _can_symlinkr ru �symlinkr� �NotImplementedErrorr~ rS )Z symlink_path�canrT rT rU r J s c C s, t � } d } | r | St j | � | � S)z8Skip decorator for tests that require functional symlinkz*Requires functional symlink implementation)r rc r� )r� �okrh rT rT rU r+ Y s c C s t d k r t St t d � s( d } n� t j � \ } } z� t t d � �� } yu t j | d d � t j | j � d d � t j � } t j d | � } | d k p� t | j d � � d k } Wn t k r� d } Yn XWd QXWd t t � t | � X| a | S) N�setxattrFr% s user.testr! z 2.6.(\d{1,2})r� �' )� _can_xattrr� ru r Zmkstempr r r9 r& r` r� rN rO r� r� r� r )r7 Ztmp_fpZtmp_name�fpZkernel_versionr� rT rT rU � can_xattr` s& + r= c C s, t � } d } | r | St j | � | � S)zDSkip decorator for tests that require functional extended attributesz(no non-broken extended attribute support)r= rc r� )r� r8 rh rT rT rU r4 { s c C s t j d | � �g } | j } | j � } | | k rE | j � } n y t j j | | � SWn t k rt d SYn XWd QXd S)zKDetects if the file system for the specified directory is case-insensitive.�dirFN) r ZNamedTemporaryFilerf �upperr� ru rv �samefiler� )Z directory�base� base_pathZ case_pathrT rT rU r � s c @ s4 e Z d Z d Z d Z d d � Z d d � Z d S)rM z�Try to prevent a crash report from popping up. 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