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Test cases for failure module.
iN( t unittestt util( t failure( t raiserc O s, y d d Wn t j | | } n X| S( s
Make a C{Failure} of a divide-by-zero error.
@param args: Any C{*args} are passed to Failure's constructor.
@param kwargs: Any C{**kwargs} are passed to Failure's constructor.
i i ( R t Failure( t argst kwargst f( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt getDivisionFailure s
t FailureTestCasec B s2 e Z d Z d Z d Z d Z d Z d Z d Z d Z d Z
d Z d
Z d Z
d e
_ d
Z d Z d Z e j d d g e _ d Z e j d d g e _ e j d d k r d Z e e _ e e _ n d Z d Z d Z d Z d Z d Z RS( c C s_ y t d Wn t j } n X| j t t } | j | t | j | j t d S( s Trapping a failure.t testN( t NotImplementedErrorR R t trapt
SystemExitt RuntimeErrort assertEqualt type( t selfR t error( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt testFailAndTrap( s c C s@ y
t Wn t j } n X| j t j | j t d S( s0 Making sure trap doesn't trap what it shouldn't.N( t
ValueErrorR R t assertRaisesR t
OverflowError( R R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_notTrapped3 s
c C s' | j | j | d | | f d S( s@
Assert that s starts with a particular prefix.
s %r is not the start of %rN( t
assertTruet
startswith( R t st prefix( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt assertStartsWith< s c C s t } t j } | j | | j | j d t j } | j | | j | j d t j } | j | | j | j d d S( s>
None of the print* methods fail when called.
s *--- Failuret TracebackN( R t StringIOt printDetailedTracebackR t getvaluet printBriefTracebackt printTraceback( R R t out( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_printingSmokeTestD s
c C s d } t d t } t j } | j | | j | j d | j d t j d | j t j } | j
| | j | j d t j } | j | | j | j d d S( s
None of the print* methods fail when called on a L{Failure} constructed
with C{captureVars=True}.
Local variables on the stack can be seen in the detailed traceback.
t xyzzyt captureVarss *--- Failures exampleLocalVar.*xyzzyR N( R t TrueR R R R t assertNotEqualt Nonet ret searchR! R" ( R t exampleLocalVarR R# ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt" test_printingCapturedVarsSmokeTestT s
c C s^ d } t d t } | j t j } | j | | j d t j d | j d S( s
C{printDetailedTraceback} includes information about local variables on
the stack after C{cleanFailure} has been called.
R% R& s exampleLocalVar.*xyzzyN(
R R' t cleanFailureR R R( R) R* R+ R ( R R, R R# ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt) test_printingCapturedVarsCleanedSmokeTestj s
c C s t j } t } | j | g | j j D] } | j d r5 | ^ q5 } | j g | | j d | j d S( s
Calling C{Failure()} with no arguments does not capture any locals or
globals, so L{printDetailedTraceback} cannot show them in its output.
s s& Capture of Locals and Globals disabledN( R R R R t
splitlinesR R t assertSubstring( R R# R t linet
linesWithVars( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_printingNoVarsx s
c C sp t j } t d t } | j | g | j j D] } | j d r; | ^ q; } | j g | d S( s
Calling C{Failure(captureVars=True)} captures the locals and globals
for its stack frames, so L{printDetailedTraceback} will show them in
its output.
R& s N( R R R' R R R0 R R( ( R R# R R2 R3 ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_printingCaptureVars s
c C s< t } t j | } | j t | j | j | d S( N( R R R R R t value( R t eR ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt testExplictPass s
c C sT y | j Wn3 t k
rC t j t j d } | d d SXt d d S( Ni is3 f.raiseException() didn't raise ZeroDivisionError!?( t raiseExceptiont ZeroDivisionErrort tracebackt
extract_tbt syst exc_infot Exception( R R t tb( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt _getInnermostFrameLine s
c C s, t } | j | } | j | d d S( Ns 1/0( R RA R ( R R t innerline( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt testRaiseExceptionWithTB s c C s6 t } | j | j | } | j | d d S( Ns 1/0( R R. RA R ( R R RB ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt testLackOfTB s
sQ the traceback is not preserved, exarkun said he'll try to fix this! god knows hows
bugger offc C s' y
| j Wn t j } n X| S( N( t _stringExceptionR R ( R R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt _getStringFailure s
c C sQ | j } y | j Wn$ | j t j d | j n
Xt d d S( Ni s Should have raised( RF R9 R R= R> RE t AssertionError( R R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_raiseStringExceptions s !t messages( raising a string exception is deprecatedc C sU | j } t j } | j d | | j j } | j | d | j d S( s
L{Failure.printTraceback} should write out stack and exception
information, even for string exceptions.
t fileiN( RF R R" R R0 R RE ( R R t outputt lines( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_printStringExceptions s
i i s> String exceptions aren't supported anymore starting Python 2.6c C s | j t j t j d S( s
Creating a Failure with no arguments causes it to try to discover the
current interpreter exception state. If no such state exists, creating
the Failure should raise a synchronous exception.
N( R R t NoCurrentExceptionErrorR ( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt testConstructionFails s c C s& t } | j | j | j d S( s
If the C{Failure} has not been cleaned, then C{getTracebackObject}
returns the traceback object that captured in its constructor.
N( R R t getTracebackObjectR@ ( R R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_getTracebackObject s c C s[ y d d Wn/ t k
r= t j } t j d t } n X| j | j | j d S( sc
C{captureVars=True} has no effect on the result of
C{getTracebackObject}.
i i R& N( R: R R R' R RP R@ ( R t
noVarsFailuret varsFailure( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt& test_getTracebackObjectFromCaptureVars s
c C sa t } t j | j } | j t j | j } | j d | | j | | d S( s
If the Failure has been cleaned, then C{getTracebackObject} returns an
object that looks the same to L{traceback.extract_tb}.
N( R R; R< RP R. R( R) R ( R R t expectedt observed( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_getTracebackObjectFromClean s
c C sW t d t } t j | j } | j t j | j } | j | | d S( s
If the Failure was created with captureVars, then C{getTracebackObject}
returns an object that looks the same to L{traceback.extract_tb}.
R& N( R R' R; R< RP R. R ( R R RU RV ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt. test_getTracebackObjectFromCaptureVarsAndClean s
c C s/ t j t d } | j | j d d S( s
L{failure.Failure}s need not be constructed with traceback objects. If
a C{Failure} has no traceback information at all, C{getTracebackObject}
just returns None.
None is a good value, because traceback.extract_tb(None) -> [].
s
some errorN( R R R? R RP R) ( R R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt' test_getTracebackObjectWithoutTraceback s ( i i ( t __name__t
__module__R R R R$ R- R/ R4 R5 R8 RA RC RD t todoRE RF RH R t suppressRM R= t version_infot skipMsgt skipRO RQ RT RW RX RY ( ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyR & s:
t BrokenStrc B s e Z d Z d Z RS( sb
An exception class the instances of which cannot be presented as strings via
C{str}.
c C s
| d S( N( ( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt __str__/ s ( RZ R[ t __doc__Rb ( ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRa * s t BrokenExceptionMetaclassc B s e Z d Z d Z RS( sa
A metaclass for an exception type which cannot be presented as a string via
C{str}.
c C s t d d S( Ns# You cannot make a string out of me.( R ( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRb : s ( RZ R[ Rc Rb ( ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRd 5 s t BrokenExceptionTypec B s e Z d Z e Z RS( sa
The aforementioned exception type which cnanot be presented as a string via
C{str}.
( RZ R[ Rc Rd t
__metaclass__( ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRe ? s t GetTracebackTestsc B sV e Z d Z d Z d Z d Z d Z d Z d Z d Z d Z
RS( s,
Tests for L{Failure.getTraceback}.
c C s> t } t j | } | j d | } | j | t d S( s
Construct a L{Failure} with an exception that raises an exception from
its C{__str__} method and then call C{getTraceback} with the specified
detail and verify that it returns a string.
t detailN( Ra R R t getTracebackt assertIsInstancet str( R Rh t xR R; ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt _brokenValueTestL s c C s | j d d S( s
A L{Failure} might wrap an exception with a C{__str__} method which
raises an exception. In this case, calling C{getTraceback} on the
failure with the C{"brief"} detail does not raise an exception.
t briefN( Rm ( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_brokenValueBriefDetailX s c C s | j d d S( sY
Like test_brokenValueBriefDetail, but for the C{"default"} detail case.
t defaultN( Rm ( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_brokenValueDefaultDetaila s c C s | j d d S( sY
Like test_brokenValueBriefDetail, but for the C{"default"} detail case.
t verboseN( Rm ( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_brokenValueVerboseDetailh s c C s8 t j t } | j d | } | j | t d S( s
Construct a L{Failure} with an exception type that raises an exception
from its C{__str__} method and then call C{getTraceback} with the
specified detail and verify that it returns a string.
Rh N( R R Re Ri Rj Rk ( R Rh R R; ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt _brokenTypeTesto s c C s | j d d S( s
A L{Failure} might wrap an exception the type object of which has a
C{__str__} method which raises an exception. In this case, calling
C{getTraceback} on the failure with the C{"brief"} detail does not raise
an exception.
Rn N( Rt ( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_brokenTypeBriefDetailz s c C s | j d d S( sX
Like test_brokenTypeBriefDetail, but for the C{"default"} detail case.
Rp N( Rt ( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_brokenTypeDefaultDetail s c C s | j d d S( sX
Like test_brokenTypeBriefDetail, but for the C{"verbose"} detail case.
Rr N( Rt ( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_brokenTypeVerboseDetail s ( RZ R[ Rc Rm Ro Rq Rs Rt Ru Rv Rw ( ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRg H s
t FindFailureTestsc B sY e Z d Z d Z d Z d Z d Z d Z e d k rW d Z
e
e _ n RS( sE
Tests for functionality related to L{Failure._findFailure}.
c C s@ y d d Wn | j t j j d n X| j d d S( s
Within an exception handler, _findFailure should return
C{None} in case no Failure is associated with the current
exception.
i i s No exception raised from 1/0!?N( R R R t _findFailureR) t fail( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt$ test_findNoFailureInExceptionHandler s
c C s7 | j t j d d | j t j j d d S( sS
Outside of an exception handler, _findFailure should return None.
iN( R R= R> R) R R Ry ( R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_findNoFailure s c C sU t } | j y | j Wn | j t j j | n X| j d d S( s
Within an exception handler, it should be possible to find the
original Failure that caused the current exception (if it was
caused by raiseException).
s) No exception raised from raiseException!?N( R R. R9 R R R Ry Rz ( R R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_findFailure s
c C sd t } | j y | j Wn/ t j } | j | j | j n X| j d d S( s
When a Failure is constructed in the context of an exception
handler that is handling an exception raised by
raiseException, the new Failure should be chained to that
original Failure.
s) No exception raised from raiseException!?N( R R. R9 R R R Ri Rz ( R R t newF( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt, test_failureConstructionFindsOriginalFailure s
c C s[ y t j Wn9 t j k
rI t j } | j | j t j n X| j d d S( s
Pyrex and Cython are known to insert fake stack frames so as to give
more Python-like tracebacks. These stack frames with empty code objects
should not break extraction of the exception.
s$ No exception raised from extension?!N( R R9 t RaiserExceptionR R R t checkRz ( R R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt/ test_failureConstructionWithMungedStackSucceeds s s raiser extension not availableN( RZ R[ Rc R{ R| R} R R R R) R_ R` ( ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRx s t TestFormattableTracebackc B s e Z d Z d Z d Z RS( s
Whitebox tests that show that L{failure._Traceback} constructs objects that
can be used by L{traceback.extract_tb}.
If the objects can be used by L{traceback.extract_tb}, then they can be
formatted using L{traceback.format_tb} and friends.
c C sA t j d d d i i g g } | j t j | d g d S( s
A C{_Traceback} object constructed with a single frame should be able
to be passed to L{traceback.extract_tb}, and we should get a singleton
list containing a (filename, lineno, methodname, line) tuple.
t methods filename.pyi{ N( s filename.pyi{ s methodN( R t
_TracebackR R; R< R) ( R R@ ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_singleFrame s !c C sV t j d d d i i g d d d i i g g } | j t j | d d g d S( s
A C{_Traceback} object constructed with multiple frames should be able
to be passed to L{traceback.extract_tb}, and we should get a list
containing a tuple for each frame.
t method1s filename.pyi{ t method2i N( s filename.pyi{ R N( s filename.pyi R N( R R R R; R< R) ( R R@ ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_manyFrames s ( RZ R[ Rc R R ( ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyR s t TestFrameAttributesc B s e Z d Z d Z RS( sq
_Frame objects should possess some basic attributes that qualify them as
fake python Frame objects.
c C sR t j d d } | j | j t | j | j t | j | j t j d S( s
L{_Frame} instances have the C{f_globals} and C{f_locals} attributes
bound to C{dict} instance. They also have the C{f_code} attribute
bound to something like a code object.
t dummynamet
dummyfilenameN( R t _FrameRj t f_globalst dictt f_localst f_codet _Code( R t frame( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_fakeFrameAttributes s ( RZ R[ Rc R ( ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyR s t
TestDebugModec B s) e Z d Z d Z d Z d Z RS( sF
Failure's debug mode should allow jumping into the debugger.
c s^ t j t j j d f d } | j | g | _ | j j t _ t j d S( sK
Override pdb.post_mortem so we can make sure it's called.
t __init__c s t _ t j j d <d S( NR ( t pdbt post_mortemR R t __dict__( ( R t origInit( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt restore* s N( R R R R R t
addCleanupt resultt appendt startDebugMode( R R ( ( R R s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt setUp# s
c C sd y d d Wn( t j \ } } } t j } n X| j | j | g | j | j t d S( s~
If startDebugMode() is called, calling Failure() will first call
pdb.post_mortem with the traceback.
i i N( R= R> R R R R R& t False( R t typt excR@ R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_regularFailure4 s c C sj y d d Wn. t j \ } } } t j d t } n X| j | j | g | j | j t d S( sk
If startDebugMode() is called, passing captureVars to Failure() will
not blow up.
i i R& N( R= R> R R R' R R R& ( R R R R@ R ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_captureVarsB s ( RZ R[ Rc R R R ( ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyR s i i ( t TwoPointFiveFailureTests( Rc R* R= R R; R t
twisted.trialR R t twisted.pythonR t twisted.testR t ImportErrorR) R t TestCaseR R? Ra R Rd t objectRe Rg Rx R R R R^ t$ twisted.test.generator_failure_testsR ( ( ( s= /usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt <module> s0
KR&3