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PressingAboutthisbook•It’sadisciplinedwayofworking•Agreatwaytofocus•Agreatwaytogetfeedbackonifyourcodeanddesignsucks•Agreatwayto facilitatepairLearntouseacceleratedtest-drivendevelopment(TDD)tobuildaReactapplicationfromscratch.Youwillseethedifferencebetweentypesoftests, wheretousethem,andwhenImplementTDDforyourReactapplicationsusingJest,ReactRouter,Redux,andGraphQL/RelayTest-DrivenDevelopmentwith Reactisapracticalandhands-onguidetolearnTDDwithReact,themostprevalentbrowserapplicationframeworkinusetodayUnderstandtechniquesand patternsforwritinggreatautomatedtests•It’sadisciplinedwayofworking•Agreatwaytofocus•Agreatwaytogetfeedbackonifyourcodeanddesignsucks •Agreatwaytofacilitatepairprogramming•Oftenleadstoverylittletimeinthedebugger•OhyeahandtheregressiontestsarenicetooscottsauberBuildtestdrivenapplicationsusingReactandJestWe'llalsointegrateReactRouter,Redux,andGraphQL,allguidedbytestsWhyTestDrivenDevelopment?Usetest doublesandmockseffectively.ItguidesthereaderthroughthefundamentalsofTDDwithReactbyimplementingaseriesofrequirementsinanontrivialexample applicationtoolingandframeworksinJavaScript,manyofwhichhavebeenrelatedtotheareaoftestautomation.Itguidesthereaderthroughthefundamentalsof TDDwithReactbyimplementingaseriesofLearntest-drivenandbehavior-drivendevelopmenttechniquesthatwillgiveyougreaterconfidencewhenbuilding ReactapplicationsKeyFeatures•ExploretheTDDprocess,howitworks,andwhyitwillhelpyouwritemaintainableReactapps•Developacomponenttesting frameworkfromscratch,whichwillhelpyouunderstandthemechanicsofUsetestdoublesandmockseffectivelyWe'lltouchonmanydifferentpartsoftheReact experience,includingbuildingforms,composinginterfaces,andanimatingelementsUnderstandthedifferenttypesoftestdoubleandwhentoapplythem UnderstandtechniquesandpatternsforwritinggreatautomatedtestsTest-drivebrowserAPIs,includingtheFetchAPIandtheSocketAPIIntegratewith librariessuchasReactRouter,Redux,andRelay(GraphQL)Test-DrivenDevelopmentwithReactisapracticalandhands-onguidetolearnTDDwithReact,the mostprevalentbrowserapplicationframeworkinusetodayThisbookexplainshowyourReactcomponentswillbeintegrated,andhowtoTest-DrivenReact helpsyourefineyourReactworkflowtogiveyouthefeedbackyouneedasquicklyaspossibleWritestrongtestsandrunthemcontinuouslyasyouwork,split Thissectionisanexplorationoftheprinciplesoftest-drivendevelopmentYou'lltestdrivetherenderingofdataandtheloadingofdatafromourserver,andinthe process,you'llPublishedatBeBuildtest-drivenapplicationsusingReactandJestTestThisbookfollowsasimpleformat:it'sawalk-throughofbuildingReact applicationsusingatest-drivenapproachTest-drivetheIntegrationoflibrariessuchasReactRouter,Redux,andRelay(GraphQL)LearnwhenWhyTestDriven Development?LearnBDDHereyouwilllearnhowtousetestsforReactapplicationsandtestingbehavioringeneral