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Code Editor : __init__.cpython-36.pyc
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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. )�socketrH �close)�familyZsocktypeZtempsock�portrd rd re rG � s 8 c C s� | j tjkr�| jtjkr�ttd�r>| jtjtj�dkr>t d��ttd�r~y | jtjtj �dkrft d��W n t k r| Y nX ttd�r�| j tjtj d� | j|df� | 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. 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This context manager enables a given warning within its scope and checks that no warnings are emitted even with that warning enabled. If force_gc is True, a garbage collection is attempted before checking for warnings. This may help to catch warnings emitted when objects are deleted, such as ResourceWarning. Other keyword arguments are passed to warnings.filterwarnings(). T)rp rq )rv �categoryN)rg rh ri � gc_collectrP )rQ rv r� Zforce_gc�warnsrd rd re �check_no_warnings s r� c c sB t jdd�� }t jdtd� dV t� W dQ R X | j|g � dS )a" Context manager to check that no ResourceWarning is emitted. Usage: with check_no_resource_warning(self): f = open(...) ... del f You must remove the object which may emit ResourceWarning before the end of the context manager. T)rp rq )r� N)rg rh ri �ResourceWarningr� rP )rQ r� rd rd re rS s c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) r a, Context manager to force import to return a new module reference. 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'size' is a requested size for the test (in arbitrary, test-interpreted units.) 'memuse' is the number of bytes per unit for the test, or a good estimate of it. For example, a test that needs two byte buffers, of 4 GiB each, could be decorated with @bigmemtest(size=_4G, memuse=2). The 'size' argument is normally passed to the decorated test method as an extra argument. If 'dry_run' is true, the value passed to the test method may be less than the requested value. If 'dry_run' is false, it means the test doesn't support dummy runs when -M is not specified. c s �� �fdd����_ ��_�S )Nc s� �j }�j}tsd}n|}ts$� rFt|| k rFtjd|| d ��tr|tr|t� tdj|| d d�� t� }|j � nd }z �| |�S |r�|j � X d S ) Ni z'not enough memory: %.1fG minimum neededi r+ z* ... expected peak memory use: {peak:.1f}G)Zpeaki @i @) r� �memuser rs rt r r� r� r r r )rh r� r �maxsizeZwatchdog)�dry_runr� r� rd re r� s* z.bigmemtest.<locals>.decorator.<locals>.wrapper)r� r )r� )r r r� )r� r� re r� s z bigmemtest.<locals>.decoratorrd )r� r r r� rd )r r r� re r3 s !c s � fdd�}|S )z0Decorator for tests that fill the address space.c sD t tk r8td kr$t d kr$tjd��q@tjdtd ��n� | �S d 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 rs rt )rh )r� rd re r� 3 s z!bigaddrspacetest.<locals>.wrapperrd )r� r� rd )r� re r4 1 s c @ s e Zd Zdd� ZdS )r, c C s t j� }||� |S )N)rs Z TestResult)rh r� r� rd rd re �runD s zBasicTestRunner.runN)r` ra rb r rd rd rd re r, C s c C s | S )Nrd )r� rd rd re �_idI s r c C s< | dkr t � r tjt j�S t| �r(tS tjdj| ��S d S )Nr� z resource {0!r} is not enabled)r� rs �skipr� r r r� )r� rd rd re �requires_resourceL s r c C s& t r t| k r tjd|tf �S tS d S )Nz%s at Android API level %d)rA �_ANDROID_API_LEVELrs r r )�levelr� rd rd re r> T s c C s t dd�| �S )z9 Decorator for tests only applicable on CPython. T)�cpython)� impl_detail)r� rd rd re r5 [ s c K sV t f |�rtS | d krLt|�\}}|r,d} nd} t|j� �}| jdj|��} tj| �S )Nz*implementation detail not available on {0}z%implementation detail specific to {0}z or ) rB r � _parse_guardsrE r� r� r� rs r )rx �guardsZ guardnames�defaultrd rd re r! a s r! c C sT t dkr:ddl}y|j� da W n tk r8 da Y nX d}t rF| S tj|�| �S )z8Skip decorator for tests that use multiprocessing.Queue.Nr TFz6requires a functioning shared semaphore implementation)�_have_mp_queue�multiprocessingZQueuern rs r )r� r& rx rd rd re r? o s c C sH | sddidfS t | j� �d }t | j� �|gt| � ks>t�| | fS )Nr TFr )r| �valuesr� r )r# Zis_truerd rd re r" ~ s r" c K s t | �\} }| jtj� 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* r5 )r� rd rd re � refcount_test� s r+ c C sR g }xB| j D ]8}t|tj�r2t||� |j|� q ||�r |j|� q W || _ dS )z>Recursively filter test cases in a suite based on a predicate.N)Z_testsr� rs � TestSuite� _filter_suiter� )�suiteZpredZnewtestsr� rd rd re r- � s r- c C s� t tjttdk d�}|j| �}tdk r4tj|j� � |js>t �|j � s�t |j �dkrl|j rl|j d d }n6t |j �dkr�|j r�|j d d }nd}ts�|d7 }t|��dS )z2Run tests from a unittest.TestSuite-derived class.N)� verbosityZcapture_outputr r zmultiple errors occurredz!; run in verbose mode for details)r ro r� r �junit_xml_listr r� Zget_xml_elementZtestsRunr Z wasSuccessfulr� �errorsZfailuresr )r. 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Return (#failures, #tests). If optional argument verbosity is not specified (or is None), pass support's belief about verbosity on to doctest. Else doctest's usual behavior is used (it searches sys.argv for -v). r N)r � optionflagsz%d of %d doctests failedz,doctest (%s) ... %d tests with zero failures)�doctestr Ztestmodr r� r` )r� r/ rF rG r� r� rd rd re r. 9 s c C s t jj� fS )N)ro rz r� rd rd rd re � modules_setupT s rH c C s: dd� t jj� D �}t jj� t jj|� t jj| � d S )Nc S s" g | ]\}}|j d �r||f�qS )z encodings.)rq )rC r� r� rd rd re rD [ s z#modules_cleanup.<locals>.<listcomp>)ro rz r� rt r� )Z oldmodulesZ encodingsrd rd re �modules_cleanupW s rI c C s" t rt j� tjj� fS df fS d S )Nr )�_thread�_count� threading� _danglingr� rd rd rd re rN z s c G sJ t sd S d}x8t|�D ],}t j� tjf}|| kr2P tjd� t� qW d S )N�d g{�G�z�?)rJ �rangerK rL rM r� r� r� )Zoriginal_valuesZ _MAX_COUNT�countr' rd rd re rO � s c s" t s� S tj� �� fdd��}|S )z�Use this function when threads are being used. This will ensure that the threads are cleaned up even when the test fails. If threading is unavailable this function does nothing. c s t � }z� | � S t|� X d S )N)rN rO )r� �key)r� rd re r� � s z reap_threads.<locals>.decorator)rJ r� r� )r� r� rd )r� re rP � s � N@c c s� t j� }z dV W dtj� }|| }xjt j� }||kr8P tj� |kr|tj� | }d|| � d|d�d|� d|� d� }t|��tjd� t� q&W X dS ) aH bpo-31234: Context manager to wait until all threads created in the with statement exit. Use _thread.count() to check if threads exited. Indirectly, wait until threads exit the internal t_bootstrap() C function of the _thread module. threading_setup() and threading_cleanup() are designed to emit a warning if a test leaves running threads in the background. This context manager is designed to cleanup threads started by the _thread.start_new_thread() which doesn't allow to wait for thread exit, whereas thread.Thread has a join() method. Nz!wait_threads() failed to cleanup z threads after z.1fz seconds (count: z , old count: �)g{�G�z�?)rJ rK r� Z monotonicr r� r� )r� Z old_countZ start_timeZdeadlinerP Zdtrx rd rd re �wait_threads_exit� s $ rT c C sZ t td�rVd} xFy2tj| tj�\}}|dkr.P td| tjd� W q P Y qX qW dS )z�Use this function at the end of test_main() whenever sub-processes are started. 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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. The old value (or None if it doesn't exist) will be assigned to the target of the "as" clause, if there is one. N)r� r� r� �delattr)r� rl �new_val�real_valrd rd re rW � s c c sX || kr0| | }|| |< z |V W d|| |< X n$|| |< z dV W d|| krR| |= X dS )a� 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. The old value (or None if it doesn't exist) will be assigned to the target of the "as" clause, if there is one. 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This will typically be run on the result of the communicate() method of a subprocess.Popen object. s \[\d+ refs, \d+ blocks\]\r?\n?� )rw �sub�strip)r� rd rd re �strip_python_stderr8 s rb Z getcountsz-types are immortal if COUNT_ALLOCS is definedc 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_flagsrd rd rd re �args_from_interpreter_flagsE s rc c C s t j� S )zgReturn a list of command-line arguments reproducing the current optimization settings in sys.flags.)r Z"_optim_args_from_interpreter_flagsrd rd rd re �!optim_args_from_interpreter_flagsJ s rd c @ s, e Zd Zdd� Zdd� Zdd� Zdd� Zd S ) rM c C s t jjj| d� || _d S )Nr )�logging�handlers�BufferingHandlerri �matcher)rh rh rd rd re ri T s zTestHandler.__init__c C s dS )NFrd )rh rd rd re � shouldFlush] s zTestHandler.shouldFlushc C s | j |� | jj|j� d S )N)r� r� r� �__dict__)rh rp rd rd re �emit` s zTestHandler.emitc K s. d}x$| j D ]}| jj|f|�r d}P q W |S )zW Look for a saved dict whose keys/values match the supplied arguments. FT)r� rh �matches)rh r� r� �drd rd re rl d s zTestHandler.matchesN)r` ra rb ri ri rk rl rd rd rd re rM S s c @ s e Zd ZdZdd� Zdd� ZdS ) rX rx rv c K s< d}x2|D ]*}|| }|j |�}| j|||�s d}P q W |S )a. Try to match a single dict with the supplied arguments. Keys whose values are strings and which are in self._partial_matches will be checked for partial (i.e. substring) matches. You can extend this scheme to (for example) do regular expression matching, etc. TF)r^ � match_value)rh rm r� r� r� r� �dvrd rd re rl s s zMatcher.matchesc C sH t |�t |�krd}n.t |�tk s,|| jkr6||k}n|j|�dk}|S )zT Try to match a single stored value (dv) with a supplied value (v). Fr )r� ru �_partial_matches�find)rh r� ro r� r� rd rd re rn � s zMatcher.match_valueN)rx rv )r` ra rb rp rl rn rd rd rd re rX o s c C sZ t d k r t S td } ytjt| � d}W n tttfk rF d}Y n X tj| � |a |S )Nr TF)� _can_symlinkr r� �symlinkr� �NotImplementedErrorr� r{ )Z symlink_path�canrd rd re r � s c C s t � }d}|r| S tj|�| �S )z8Skip decorator for tests that require functional symlinkz*Requires functional symlink implementation)r rs r )r� �okrx rd rd re r/ � s c C s� t d k r t S ttd�s d} n�tj� }tj|d�\}}z�ttd���}y`tj|dd� tj|dd� tj|j � dd� t j � }t j d |�}|d kp�t|jd ��d k} W n tk r� d} Y nX W d Q R X W d tt� t|� t|� X | a | S ) N�setxattrF)�dirrG s user.testr_ s trusted.foos 42z 2.6.(\d{1,2})r �' )� _can_xattrr� r� r, r- Zmkstempr> r rw rH rp r� rw rx r� r r� r r� )ru Ztmp_dirZtmp_fpZtmp_name�fpZkernel_versionr� rd rd re � can_xattr� s, r| c C s t � }d}|r| S tj|�| �S )zDSkip decorator for tests that require functional extended attributesz(no non-broken extended attribute support)r| rs r )r� rv rx rd rd re r8 � s c C s$ t pt}d}|r| S tj|�| �S )z;Skip decorator for tests not run in (non-extended) PGO taskz#Not run for (non-extended) PGO task)r] � PGO_EXTENDEDrs r )r� rv rx rd rd re �skip_if_pgo_task� s r~ c C s^ t j| d��H}|j}|j� }||kr,|j� }ytjj||�S tk rN dS X W dQ R X dS )zKDetects if the file system for the specified directory is case-insensitive.)rx FN) r, ZNamedTemporaryFilerv �upperr r� r� �samefiler� )Z directory�base� base_pathZ case_pathrd rd re r � s )rf c C s> t t| ��t t|�� }|r(|t |�8 }t dd� |D ��}|S )a Returns the set of items in ref_api not in other_api, except for a defined list of items to be ignored in this check. By default this skips private attributes beginning with '_' but includes all magic methods, i.e. those starting and ending in '__'. c s s( | ] }|j d � s |jd�r|V qdS )�_�__N)rq �endswith)rC r� rd rd re � <genexpr>� s z&detect_api_mismatch.<locals>.<genexpr>)r� rx )Zref_apiZ other_apirf Z missing_itemsrd rd re r< � s c C s� |dkr|j f}nt|t�r"|f}t|�}xbt|�D ]V}|jd�s4||krLq4t||�}t|dd�|ks�t|d� r4t|tj � r4|j |� q4W | j |j |� dS )a Assert that the __all__ variable of 'module' contains all public names. The module's public names (its API) are detected automatically based on whether they match the public name convention and were defined in 'module'. The 'name_of_module' argument can specify (as a string or tuple thereof) what module(s) an API could be defined in in order to be detected as a public API. One case for this is when 'module' imports part of its public API from other modules, possibly a C backend (like 'csv' and its '_csv'). The 'extra' argument can be a set of names that wouldn't otherwise be automatically detected as "public", like objects without a proper '__module__' attribute. If provided, it will be added to the automatically detected ones. The 'blacklist' argument can be a set of names that must not be treated as part of the public API even though their names indicate otherwise. Usage: import bar import foo import unittest from test import support class MiscTestCase(unittest.TestCase): def test__all__(self): support.check__all__(self, foo) class OtherTestCase(unittest.TestCase): def test__all__(self): extra = {'BAR_CONST', 'FOO_CONST'} blacklist = {'baz'} # Undocumented name. # bar imports part of its API from _bar. support.check__all__(self, bar, ('bar', '_bar'), extra=extra, blacklist=blacklist) Nr� ra ) r` r� ru r� rx rq r� r� �types� ModuleType�addZassertCountEqual�__all__)Z test_caser� Zname_of_moduleZextraZ blacklistZexpectedrv r� rd rd re r= � s ) c @ s( e Zd ZdZdZdZdd� Zdd� ZdS )rZ z�Try to prevent a crash report from popping up. On Windows, don't display the Windows Error Reporting dialog. On UNIX, disable the creation of coredump file. 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