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import_modulet verboset
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max_memuset record_original_stdoutt get_original_stdoutt unloadt unlinkt rmtreet forgett is_resource_enabledt requirest find_unused_portt bind_portt fcmpt have_unicodet is_jythont TESTFNt HOSTt FUZZt SAVEDCWDt temp_cwdt findfilet sortdictt check_syntax_errort open_urlresourcet check_warningst check_py3k_warningst CleanImportt EnvironmentVarGuardt captured_outputt captured_stdoutt TransientResourcet transient_internett run_with_localet set_memlimitt
bigmemtestt bigaddrspacetestt BasicTestRunnert run_unittestt run_doctestt threading_setupt threading_cleanupt
reap_childrent cpython_onlyt check_impl_detailt
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py3k_bytest import_fresh_modulet strip_python_stderrt IPV6_ENABLEDc B s e Z d Z RS( s* Base class for regression test exceptions.( t __name__t
__module__t __doc__( ( ( s) /usr/lib64/python2.7/test/test_support.pyR - s c B s e Z d Z RS( s Test failed.( R6 R7 R8 ( ( ( s) /usr/lib64/python2.7/test/test_support.pyR 0 s c B s e Z d Z RS( s� Test skipped because it requested a disallowed resource.
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has not been enabled. It is used to distinguish between expected
and unexpected skips.
( R6 R7 R8 ( ( ( s) /usr/lib64/python2.7/test/test_support.pyR 3 s c c s= | r4 t j � � t j d d t � d VWd QXn d Vd S( s� Context manager to suppress package and module deprecation
warnings when importing them.
If ignore is False, this context manager has no effect.t ignores .+ (module|package)N( t warningst catch_warningst filterwarningst DeprecationWarning( R9 ( ( s) /usr/lib64/python2.7/test/test_support.pyt _ignore_deprecated_imports; s
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rH } t j t | � � � n XWd QXd S( s� Import and return the module to be tested, raising SkipTest if
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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( sw Helper function to save and remove a module from sys.modules
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| =q� WX| SWd QXd S( s Imports and returns a module, deliberately bypassing the sys.modules cache
and importing a fresh copy of the module. Once the import is complete,
the sys.modules cache is restored to its original state.
Modules named in fresh are also imported anew if needed by the import.
If one of these modules can't be imported, None is returned.
Importing of modules named in blocked is prevented while the fresh import
takes place.
If deprecated is True, any module or package deprecation messages
will be suppressed.N( R> RO RU t appendR? R R@ RS t itemsRH RI ( RD t fresht blockedRE RM t names_to_removet
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rB t j d | j | f � � n X| Sd S( s? Get an attribute, raising SkipTest if AttributeError is raised.s module %s has no attribute %sN( t getattrt AttributeErrorRA RB R6 ( t objRD t attribute( ( s) /usr/lib64/python2.7/test/test_support.pyR1 � s
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c C sj t | � xY t j D]N } t t j j | | t j d � � t t j j | | t j d � � q Wd S( sm "Forget" a module was ever imported by removing it from sys.modules and
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Ri R| t extsep( RN Rt ( ( s) /usr/lib64/python2.7/test/test_support.pyR s
$c C s t d k o | t k S( sP Test whether a resource is enabled. Known resources are set by
regrtest.py.N( R RS ( t resource( ( s) /usr/lib64/python2.7/test/test_support.pyR
s c C s] t j d � j j d � d k r% d St | � sY | d k rJ d | } n t | � � n d S( s� Raise ResourceDenied if the specified resource is not available.
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possibility of False being returned occurs when regrtest.py is executing.i R6 t __main__Ns$ Use of the `%s' resource not enabled( RH t _getframet f_globalst getR
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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
socket.error 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.( t socketR t close( t familyt socktypet tempsockt port( ( s) /usr/lib64/python2.7/test/test_support.pyR ( s
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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
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t j t j d � q� n | j | d f � | j � d } | S( s% 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.
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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.
t SO_REUSEADDRi sH tests should never set the SO_REUSEADDR socket option on TCP/IP sockets!t SO_REUSEPORTt WITHIN_PYTHON_RPM_BUILDsH tests should never set the SO_REUSEPORT socket option on TCP/IP sockets!t SO_EXCLUSIVEADDRUSEi ( R� R� t AF_INETt typet SOCK_STREAMt hasattrt
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rV | s9 � n t j d | t d d �n Xz t j � VWd t j | � Xd S( sg Return a context manager that changes the current working directory.
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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.
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Context manager that creates a temporary directory and set it as CWD.
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Accept 2-tuples as positional arguments:
("message regexp", WarningCategory)
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(default False)
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c B s) e Z d Z d � Z d � Z d � Z RS( s, 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
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c B s_ e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z
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longer than expected. This function tries its best to force all garbage
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the test, or a good estimate of it. 'overhead' specifies fixed overhead,
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the decorated test function. If minsize * memuse is more than the
allowed memory use (as defined by max_memuse), the test is skipped.
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Run doctest on the given module. Return (#failures, #tests).
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i����NR s %d of %d doctests faileds, doctest (%s) ... %d tests with zero failures( t doctestRS R RH Rf R t testmodR R6 ( R_ R� R� t save_stdoutR� R~ ( ( s) /usr/lib64/python2.7/test/test_support.pyR+ � s
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� St j � � � f d � � } | S( s� 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 � | � SWd t | � Xd S( N( R, R- ( R? t key( Rq ( s) /usr/lib64/python2.7/test/test_support.pyR{ 0 s ( R� t functoolst wraps( Rq R{ ( ( Rq s) /usr/lib64/python2.7/test/test_support.pyt reap_threads( s c C sc t t d � r_ d } xG t r[ y/ t j | t j � \ } } | d k rL Pn Wq Pq Xq Wn d S( s� 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
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t waitpidi����i N( R� Ri RP R� t WNOHANG( t any_processt pidt status( ( s) /usr/lib64/python2.7/test/test_support.pyR. 9 s c c s| t | | � rN t | | � } t | | | � z d VWd t | | | � Xn* t | | | � z d VWd t | | � Xd S( sm Temporary swap out an attribute with a new object.
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with swap_attr(obj, "attr", 5):
...
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exist on `obj`, it will be created and then deleted at the end of the
block.
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c C s\ y | j � SWnG t k
rW y d j d � | D� � SWqX t k
rS t | � SXn Xd S( sZ Emulate the py3k bytes() constructor.
NOTE: This is only a best effort function.
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c C s d d l } | j � S( sZ Return a list of command-line arguments reproducing the current
settings in sys.flags.i����N( t
subprocesst _args_from_interpreter_flags( R� ( ( s) /usr/lib64/python2.7/test/test_support.pyt args_from_interpreter_flagsw s c C s t j d d | � j � } | S( s� 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.
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