=Nc@sdZddlZddlZddlZddlZddlZddlmZmZddl m Z yddl m Z Wne k reZ nXdZdejfdYZd efd YZd efd YZd eefdYZdejfdYZdejfdYZdejfdYZdejfdYZdejfdYZejd ddfkrddlmZndS(s Test cases for failure module. iN(tunittesttutil(tfailure(traisercOs,y ddWntj||}nX|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. ii(RtFailure(targstkwargstf((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pytgetDivisionFailures  tFailureTestCasecBs2eZdZdZdZdZdZdZdZdZ dZ d Z d Z d Z d e _d ZdZdZejddge_dZejddge_ejd dkrdZee_ee_ndZdZdZdZdZdZRS(cCs_ytdWntj}nX|jtt}|j|t|j|jtdS(sTrapping a failure.ttestN(tNotImplementedErrorRRttrapt SystemExitt RuntimeErrort assertEqualttype(tselfRterror((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttestFailAndTrap(scCs@y tWntj}nX|jtj|jtdS(s0Making sure trap doesn't trap what it shouldn't.N(t ValueErrorRRt assertRaisesR t OverflowError(RR((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_notTrapped3s  cCs'|j|j|d||fdS(s@ Assert that s starts with a particular prefix. s%r is not the start of %rN(t assertTruet startswith(Rtstprefix((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pytassertStartsWith<scCst}tj}|j||j|jdtj}|j||j|jdtj}|j||j|jddS(s> None of the print* methods fail when called. s *--- Failuret TracebackN(RtStringIOtprintDetailedTracebackRtgetvaluetprintBriefTracebacktprintTraceback(RRtout((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_printingSmokeTestDs       cCsd}tdt}tj}|j||j|jd|jdtj d|jtj}|j ||j|jdtj}|j ||j|jddS(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. txyzzyt captureVarss *--- FailuresexampleLocalVar.*xyzzyRN( RtTrueRRRR tassertNotEqualtNonetretsearchR!R"(RtexampleLocalVarRR#((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt"test_printingCapturedVarsSmokeTestTs      cCs^d}tdt}|jtj}|j||jdtjd|j dS(s C{printDetailedTraceback} includes information about local variables on the stack after C{cleanFailure} has been called. R%R&sexampleLocalVar.*xyzzyN( RR't cleanFailureRRR(R)R*R+R (RR,RR#((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt)test_printingCapturedVarsCleanedSmokeTestjs   cCstj}t}|j|g|jjD]}|jdr5|^q5}|jg||jd|jdS(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(RRRR t splitlinesRRtassertSubstring(RR#Rtlinet linesWithVars((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_printingNoVarsxs   cCsptj}tdt}|j|g|jjD]}|jdr;|^q;}|jg|dS(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(RRR'RR R0RR((RR#RR2R3((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_printingCaptureVarss   cCs<t}tj|}|jt|j|j|dS(N(RRRR Rtvalue(RteR((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttestExplictPasss  cCsTy|jWn3tk rCtjtjd}|ddSXtddS(Niis3f.raiseException() didn't raise ZeroDivisionError!?(traiseExceptiontZeroDivisionErrort tracebackt extract_tbtsystexc_infot Exception(RRttb((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt_getInnermostFrameLines  cCs,t}|j|}|j|ddS(Ns1/0(RRAR(RRt innerline((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttestRaiseExceptionWithTBs cCs6t}|j|j|}|j|ddS(Ns1/0(RR.RAR(RRRB((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt testLackOfTBs  sQthe traceback is not preserved, exarkun said he'll try to fix this! god knows hows bugger offcCs'y |jWntj}nX|S(N(t_stringExceptionRR(RR((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt_getStringFailures  cCsQ|j}y|jWn$|jtjd|jn XtddS(NisShould have raised(RFR9RR=R>REtAssertionError(RR((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_raiseStringExceptionss  !tmessages(raising a string exception is deprecatedcCsU|j}tj}|jd||jj}|j|d|jdS(s L{Failure.printTraceback} should write out stack and exception information, even for string exceptions. tfileiN(RFRR"R R0RRE(RRtoutputtlines((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_printStringExceptionss   iis>String exceptions aren't supported anymore starting Python 2.6cCs|jtjtjdS(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(RRtNoCurrentExceptionErrorR(R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttestConstructionFailsscCs&t}|j|j|jdS(s If the C{Failure} has not been cleaned, then C{getTracebackObject} returns the traceback object that captured in its constructor. N(RRtgetTracebackObjectR@(RR((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_getTracebackObjects cCs[y ddWn/tk r=tj}tjdt}nX|j|j|jdS(sc C{captureVars=True} has no effect on the result of C{getTracebackObject}. iiR&N(R:RRR'RRPR@(Rt noVarsFailuret varsFailure((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt&test_getTracebackObjectFromCaptureVarss    cCsat}tj|j}|jtj|j}|jd||j||dS(s If the Failure has been cleaned, then C{getTracebackObject} returns an object that looks the same to L{traceback.extract_tb}. N(RR;R<RPR.R(R)R(RRtexpectedtobserved((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt test_getTracebackObjectFromCleans   cCsWtdt}tj|j}|jtj|j}|j||dS(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(RR'R;R<RPR.R(RRRURV((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt.test_getTracebackObjectFromCaptureVarsAndCleans  cCs/tjtd}|j|jddS(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(RRR?RRPR)(RR((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt'test_getTracebackObjectWithoutTracebacks(ii(t__name__t __module__RRRR$R-R/R4R5R8RARCRDttodoRERFRHRtsuppressRMR=t version_infotskipMsgtskipRORQRTRWRXRY(((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyR &s:                t BrokenStrcBseZdZdZRS(sb An exception class the instances of which cannot be presented as strings via C{str}. cCs |dS(N((R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt__str__/s(RZR[t__doc__Rb(((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRa*stBrokenExceptionMetaclasscBseZdZdZRS(sa A metaclass for an exception type which cannot be presented as a string via C{str}. cCstddS(Ns#You cannot make a string out of me.(R(R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRb:s(RZR[RcRb(((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRd5stBrokenExceptionTypecBseZdZeZRS(sa The aforementioned exception type which cnanot be presented as a string via C{str}. (RZR[RcRdt __metaclass__(((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRe?stGetTracebackTestscBsVeZdZdZdZdZdZdZdZdZ dZ RS( s, Tests for L{Failure.getTraceback}. cCs>t}tj|}|jd|}|j|tdS(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. tdetailN(RaRRt getTracebacktassertIsInstancetstr(RRhtxRR;((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt_brokenValueTestLs cCs|jddS(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. tbriefN(Rm(R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_brokenValueBriefDetailXscCs|jddS(sY Like test_brokenValueBriefDetail, but for the C{"default"} detail case. tdefaultN(Rm(R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_brokenValueDefaultDetailascCs|jddS(sY Like test_brokenValueBriefDetail, but for the C{"default"} detail case. tverboseN(Rm(R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_brokenValueVerboseDetailhscCs8tjt}|jd|}|j|tdS(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. RhN(RRReRiRjRk(RRhRR;((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt_brokenTypeTestoscCs|jddS(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. RnN(Rt(R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_brokenTypeBriefDetailzscCs|jddS(sX Like test_brokenTypeBriefDetail, but for the C{"default"} detail case. RpN(Rt(R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_brokenTypeDefaultDetailscCs|jddS(sX Like test_brokenTypeBriefDetail, but for the C{"verbose"} detail case. RrN(Rt(R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_brokenTypeVerboseDetails( RZR[RcRmRoRqRsRtRuRvRw(((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRgHs   tFindFailureTestscBsYeZdZdZdZdZdZdZedkrWdZ e e_ nRS(sE Tests for functionality related to L{Failure._findFailure}. cCs@y ddWn |jtjjdnX|jddS(s Within an exception handler, _findFailure should return C{None} in case no Failure is associated with the current exception. iisNo exception raised from 1/0!?N(RRRt _findFailureR)tfail(R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt$test_findNoFailureInExceptionHandlers  cCs7|jtjdd|jtjjddS(sS Outside of an exception handler, _findFailure should return None. iN(RR=R>R)RRRy(R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_findNoFailurescCsUt}|jy|jWn |jtjj|nX|jddS(s Within an exception handler, it should be possible to find the original Failure that caused the current exception (if it was caused by raiseException). s)No exception raised from raiseException!?N(RR.R9RRRRyRz(RR((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_findFailures  cCsdt}|jy|jWn/tj}|j|j|jnX|jddS(s When a Failure is constructed in the context of an exception handler that is handling an exception raised by raiseException, the new Failure should be chained to that original Failure. s)No exception raised from raiseException!?N(RR.R9RRRRiRz(RRtnewF((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt,test_failureConstructionFindsOriginalFailures    cCs[ytjWn9tjk rItj}|j|jtjnX|jddS(s Pyrex and Cython are known to insert fake stack frames so as to give more Python-like tracebacks. These stack frames with empty code objects should not break extraction of the exception. s$No exception raised from extension?!N(RR9tRaiserExceptionRRRtcheckRz(RR((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyt/test_failureConstructionWithMungedStackSucceedss  sraiser extension not availableN( RZR[RcR{R|R}RRRR)R_R`(((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRxs      tTestFormattableTracebackcBs eZdZdZdZRS(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. cCsAtjdddiigg}|jtj|dgdS(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. tmethods filename.pyi{N(s filename.pyi{smethodN(Rt _TracebackRR;R<R)(RR@((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_singleFrames!cCsVtjdddiigdddiigg}|jtj|ddgdS( 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. tmethod1s filename.pyi{tmethod2iN(s filename.pyi{RN(s filename.pyiRN(RRRR;R<R)(RR@((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_manyFramess (RZR[RcRR(((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRs tTestFrameAttributescBseZdZdZRS(sq _Frame objects should possess some basic attributes that qualify them as fake python Frame objects. cCsRtjdd}|j|jt|j|jt|j|jtjdS(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(Rt_FrameRjt f_globalstdicttf_localstf_codet_Code(Rtframe((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_fakeFrameAttributess(RZR[RcR(((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyR st TestDebugModecBs)eZdZdZdZdZRS(sF Failure's debug mode should allow jumping into the debugger. cs^tjtjjdfd}|j|g|_|jjt_tjdS(sK Override pdb.post_mortem so we can make sure it's called. t__init__cst_tjjdRRRRR&tFalse(RttyptexcR@R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_regularFailure4s cCsjy ddWn.tj\}}}tjdt}nX|j|j|g|j|jtdS(sk If startDebugMode() is called, passing captureVars to Failure() will not blow up. iiR&N(R=R>RRR'RRR&(RRRR@R((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyttest_captureVarsBs (RZR[RcRRR(((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyRs  ii(tTwoPointFiveFailureTests( RcR*R=RR;Rt twisted.trialRRttwisted.pythonRt twisted.testRt ImportErrorR)RtTestCaseR R?RaRRdtobjectReRgRxRRRR^t$twisted.test.generator_failure_testsR(((s=/usr/lib/python2.7/dist-packages/twisted/test/test_failure.pyts0           KR&3