helping customers write acceptance tests

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1、HelpingCustomersWriteAcceptanceTests-MakingItEasyJeremyStell-Smithjeremy@thoughtworks.comAgendaWhyTest?TypesofTestsEvolvingaFrameworkOnaWebServiceProjectOnaJ2EEProjectwithaSwingClientLessonsLearnedOtherFrameworksFITMarathonLet’sTryItOut…AgendaWhyTest?TypesofTestsEvolvingaFrameworkOnaWebServ

2、iceProjectOnaJ2EEProjectwithaSwingClientLessonsLearnedOtherFrameworksFITMarathonLet’sTryItOut…WhyTest?What’sthepoint?TomakechangeSAFEToleadtoaflatcostofchangecurveAssuch,testingisthebasisofXPTheCostofChangeCostTimeTraditionalDevelopmenteXtremeProgramming“Test-Time”checkingWhydoweliketypesafe

3、ty?Ascodechanges,thecompilercatcheserrors,andtheseerrorsareeasytofixBut,compile-timecheckingcan’tcheckeverythingThereareruntimeerrors,andworse,bugsTestsCANguardagainsttheseIfitcompiles,therearenocompile-timeerrorsIfthetestspass,therearenoerrorsperiodTypesofTestsFine-grainedvs.coarse-grainedt

4、estsDevelopervs.customertestsFine-grained,developertests(unittests)aretheidealFast,cometheclosestto100%coverageLowduplication->Lowcostofchange,lowcouplingUsecoarse-grainedteststoprotectyourselfagainstholesinyourbricksUsecustomerteststoprotectyourselffrombuildingthewrongthingrightAnAcceptance

5、TestisaCustomerTestDoesnothavetobecoarseGetyourcustomerstowritetestsandtakeownershipMustbeinthelanguageofthecustomerYour“customer”maybeananalystorQAAcceptancetestsarenotspecifictoXPAgendaWhyTest?TypesofTestsEvolvingaFrameworkOnaWebServiceProjectOnaJ2EEProjectwithaSwingClientLessonsLearnedOth

6、erFrameworksFITMarathonLet’sTryItOut…WebServiceProjectXMLin/XMLoutStoriesareintermsofXMLAPI…sotestsshouldbeintermsofXMLExampleStoryGateInContainerStoryIwouldlikerecordacontainerasGatedIntoafacilitybysubmittingthismessage.Thesyntaxshouldbe:

7、>OurFrameworkSimplestthingthatcouldpossiblywork…BuiltontopofJunitGotUIforfreeInthe“language”ofouranalysts&customersSetup/TeardownofDataE