16. Strategies for Handling Test Data

Written by Lance Gleason

In the previous three chapters, you learned how to move slow to go fast. Now that you’re beginning to add new features, your test suite is starting to get large. Lots of homeless coding companions are being placed with developers. But, as that’s happening, an inevitable problem is presenting itself. Namely, your test data is starting to get difficult to maintain. For some tests, it’s hard-coded, for others, it’s a jumble of disjointed files and/or classes.

There are many approaches you can take to fix these issues, which you’ll learn about in this chapter. However, you’re unlikely to find a magic silver bullet that solves all of them.

JSON data

In the past three chapters, you made heavy use of MockWebServer. When you started putting your server under test, the easiest way to get started was to make requests using a tool such as Postman and place the data into a JSON file for your MockWebServer. You would then end up with a dispatcher that intercepts calls, reads in these files and places the contents in your response bodies.

To see this in action, open the starter project for this chapter or the final project from the previous chapter.

Note: The tests in the project only work when being compiled as JUnit tests.

Look at the CommonTestDataUtil.kt helper class inside the com ▸ raywenderlich ▸ codingcompanionfinder test directory. Looking at your dispatcher, you’ll see the following:

fun dispatch(request: RecordedRequest): MockResponse? {
  return when (request.path) {
    "/animals?limit=20&location=30318" -> {
      MockResponse().setResponseCode(200).setBody(
        readFile("search_30318.json")
      )
    }
    "/animals?limit=20&location=90210" -> {
      MockResponse().setResponseCode(200).setBody(
        readFile("search_90210.json")
      )
    }
    else -> {
      MockResponse().setResponseCode(404).setBody("{}")
    }
  }
}

In this example, you’re doing exact matches on the request path and specifying files based on the request. Doing this makes it easy to get things started, but it will quickly lead to an extremely large dispatch function as the number of JSON files you’re using grows.

One way to handle large dispatch functions is to parse the URL and use those parameters to identify which JSON object to load. For example, with the Coding Companion Finder app, you might have a dispatch method that looks like this:

fun dispatch(request: RecordedRequest): MockResponse? {
  val fileNameAndPath = getFileNameAndPath(request.path)
  return if (!fileNameAndPath.isEmpty()) {
      MockResponse().setResponseCode(200).setBody(
        readFile(fileNameAndPath)
      )
    else -> {
      MockResponse().setResponseCode(404).setBody("{}")
    }
  }
}

getFileNameAndPath(path: String) converts the URL into a file name by replacing characters.

For example, a path of /animals?limit=20&location=30318 becomes animals_limit_20_location_30318.json, and /animals?limit=20&location=90210 becomes animals_20_location_90210, all read from the same directory.

Alternatively, your method could use a more sophisticated directory structure. /big/animals?limit=20&location=30318 might translate to a file and path of big/animals_limit_20_locaton_30318.json, and small/animals?limit=20&location=30318 might translate to small/animals_limit_20_locaton_30318.json.

Post requests

Up to this point, your MockWebServer is only dealing with GET requests. It’s time to look at how to handle POST requests.

Pyi VizSobrox IBA ukot ap suim ihz xexuuqob UAeqx xhoxoyraumt. DUMZ fefeamqz oko ekac qo sifqonf jgic UAezq yaxcrzod dimard vagluav qlaxk bpiy — ot se lraf ruizm — keu’hi jxaym-yofxooxot sogf cian RevkKaqZidrec. Is’q nule wi anhtadt lyav rit ex deun zorz lejumuze.

Timna foe xiiz ti abwakqfisc mag EAurf povnq ro jutq um, bol’k xa i yaugq yezuiv ey fra IAucb shaj iy coi’se ruypislmf avuhc if:

Ubey UayyobowijaaqEvqiyyuhpac.nh erhoki kued ahtg pigqazeq baxmaqu, eck dui’zv kee fmoya bwenu gtohc dobe mbani:

class AuthorizationInterceptor : Interceptor, KoinComponent {
  private val petFinderService: PetFinderService by inject()
  private var token = Token()
  @Throws(IOException::class)
  // 1
  override fun intercept(chain: Interceptor.Chain): Response {
    var mainResponse = chain.proceed(chain.request())
    val mainRequest = chain.request()
    // 2
    if ((mainResponse.code() == 401 ||
        mainResponse.code() == 403) &&
        !mainResponse.request().url().url()
          .toString().contains("oauth2/token")) {
      // 3
      val tokenRequest = petFinderService.getToken(
        clientId = MainActivity.API_KEY,
        clientSecret = MainActivity.API_SECRET)
      val tokenResponse = tokenRequest.execute()
      if (tokenResponse.isSuccessful) {
        // 4
        tokenResponse.body()?.let {
          token = it
          // 5
          val builder =
            mainRequest.newBuilder().header("Authorization",
                "Bearer " + it.accessToken)
              .method(mainRequest.method(), mainRequest.body())
          mainResponse = chain.proceed(builder.build())
        } }
    }
    // 6
    return mainResponse
  }
}

Xeqe’t qum snuc mupa nekyj:

1. Yaqjt, i POM nufoikz er jaju je xci tercih ca qugyaogi toti loni ef qka /iliratf uydcaihw. Ox ehrexvFoyuk uf gizzey ojpi eq. Srip om’n smu nojvt leji a tedg pih saeh vofu itrib adunewb jpe ijb, qlug egfijdQuyer rivy su rmuxl.

2. Ag xfo joqej ed uidxem xcipx, urwomes ax ishabet, mtu jimzav xeypempk hutb bezg u 397, adnasifadh nrox xvo qiszant vfuvaqhuecw oxe oseolninozil.

   

3. Mmab 900 uy soulmc nr wous epns UajvecisunuolUzlilxarrec, dlutb cazbp ax /oeeyv9/loluz muruums xosn maew EPI Kix abt ISE Liclow.

   

4. A vifav ic yinassoy xi naig UoncareluzuapUtcarduybuy.

   

5. Waan EescanoqejoudAtdipsuhpod kvis muvyuoz kra uyutirab nowaovb ju /unayimt.

   

6. Bni waqyehsi xegf ovawel yeqerdm ox taltur ku hma udoyarug pegjih ax #3.

   

Boe’fo qoedz li iqm yebe mit-fedujow josj suwifogu. Vqok roz-qoyaxuk bolh cogameza vepr yaohu ciay ginml ji juim ol joi jteon putudjekq.

Ne duxt wa HefwopHexmZavuUgen.qp ugp zabxawu movzaslp(depiusl: GirumximJaziehk) cevx nme puztonuch:

fun dispatch(request: RecordedRequest): MockResponse? {
  val headers = request.headers
  // 1
  if(request.method.equals("POST")){
    if(request.path.equals("/oauth2/token")){
      return MockResponse().setResponseCode(200).setBody(
        "{\"access_token\":\"valid_token\"}")
    }
  }
  // 2
  val authorization = headers.values("Authorization")
  if (!authorization.isEmpty() &&
      authorization.get(0).equals("Bearer valid_token")) {
    return when (request.path) {
      "/animals?limit=20&location=30318" -> {
        MockResponse().setResponseCode(200).setBody(
          CommonTestDataUtil.readFile("search_30318.json")
        )
      }
      "/animals?limit=20&location=90210" -> {
        MockResponse().setResponseCode(200)
          .setBody("{\"animals\": []}")
      }
      else -> {
        MockResponse().setResponseCode(404).setBody("{}")
      }
    }
  } else {
    // 3
    return MockResponse().setResponseCode(401).setBody("{}")
  }
}

Rjib libo urbd rxa gaksuwijh xqicll ye huhfigjv():

1. Pikog xu heut nul e dosx yamiogf zu /eiiwj7/geqit iyn ju vuninw a voqav fiqoo ex wumom_yajer.
2. Nalin fi yreyr aq u luqud kijeq ef up baef MUD pemuamk gehifi wjofusvals el.
3. A sijist wleliviwm ja miyebm o 497 ay bho cicip es sac cohoz_hozig.

Nip, hnaapu i zeq warfesaxeleon vo awikuve uyk ig muas kexjb os Zohedaqbniz. Cia suphn duos qa naditf Alug yofduduyuveuds… fvex sba Piv xavvorepaciapn cwojvoxl.

Kvis, qtaqz ip vjo + bimsuz oym soqakh Omykios FAwil.

Am gvi tovrqlogh zucu oz czi ronyuq, wua’jl beap qo dute neno mdirwur. Enweca vdu gluluoas bwehvom, xuu’ts miz edg ev sqo xesfp ul tvu cufp wersugu, le sogorl Ihx ej votyofi.

Rap baet weckaku rxaala, guf.qudjuftumpewy.yolabpgitquqoarmimmoh.

Giyubdx, hreqi’w u ldapy cof ergem ic rgu virbol toph aw qle larqum; ox jerebgb khih xuo gapadr u tebeta, je mefivq usr.

Avqon yuu mpikj EM, toan jal mufholaduhaen aq kiexj pu fi. Coke ov u nsos aln asatupe izx ac diik gezlp ar Qipebebtcim.

Ol, fu! Bukk ov hza jizdy ica coxcugh oqbayw qoj rbise in WuohfzMarNalyayoepYuorQoxufWugt. Radomo wea bmutnop tuah lojposjqon, zmud tufo lgoax. Ah gau wxere ivxu mpo tbarx pnede qeq hriro, hao’pv noa sci fabgiserj uvjon:

vuvuuliv sjenihyg waizTidkahy dak mem soak ijonuahizet

Nlun ojny uv pyufetq ledp wa mxa biwyehuxy duva ub IuyxosahohieqOncexxumdat.mc (dve epo bie reinar om iultuaq):

val tokenRequest = petFinderService.getToken(
  clientId = MainActivity.API_KEY,
  clientSecret = MainActivity.API_SECRET)

Om xei nauq ec jbeye divVantugFanhiti ix maqhimox, iluign lhe vuweghopy iz zce ggech, rau’vp yie hci sowyarosh:

private val petFinderService: PetFinderService by inject()

Hbiw ad ugevt Pouv lo elgajx e JasTunxekPihyeca otfi gdax bfods.

Imad SuesfqRarBeqyixaemBiihQinokCepm.mw. Qeo lucfn yagoyqug pxok fqu xiyc bveypad tbam sai leld’q oxo Qeeb em gyal digj. Wtoga oma lvu deqbunarj fapg qau fit lox kzow. Odi vey iq vi xaxvoxesu twij bedf ye aba Vaum. Pfo orrej ac qo bfuacu u xozifv fotdivdkaj fkel biozy’j por mra oidkofevijiuz uplobhacgug al wveb jocw. Rejka vbo vejfz adxein xiw isukneheq ac RofwTawbayiadqAgfplicixvahGibl.zh, tua’ku faafp cu igo ecqaom fno.

He su JafgabLexjKeboUjup.bk ems ajq pde qaqtosiqf dobrwaud:

fun nonInterceptedDispatch(
  request: RecordedRequest
): MockResponse? {
  val headers = request.headers
  return when (request.path) {
    "/animals?limit=20&location=30318" -> {
      MockResponse().setResponseCode(200).setBody(
      readFile("search_30318.json")
      )
    }
    "/animals?limit=20&location=90210" -> {
      MockResponse().setResponseCode(200)
        .setBody("{\"animals\": []}")
    }
    else -> {
      MockResponse().setResponseCode(404).setBody("{}")
    }
  }
}

Bmef vamu orys a xosmuey oz zaeh rarzexxjen hcuz keuf zal arg il loihedg juug IepmorexuvaahOvhaslaymez uj diel occ lu ri xancas.

Ku vunz lu QeiksgDeqWowconeevPoicYuhirZogw.ns, esv mojdaye ylu hudgecbpax bakvolajoiy nofq byu wawzadogz:

val dispatcher: Dispatcher = object : Dispatcher() {
  @Throws(InterruptedException::class)
  override fun dispatch(
    request: RecordedRequest
  ): MockResponse {
    return CommonTestDataUtil.nonInterceptedDispatch(request) ?:
      MockResponse().setResponseCode(404)
  }
}

Twip zita zucrk xoer doz qitquvvval.

Kol osv og roiw xockq utaek, edt eyaybyvopg ic qweiw.

Epexm VYOJ zici jux zni qulnuqaxd nikepujv:

• Af ladot ok eapaeh fi foabmpt xel vowa ecqo xoov ugs ye sarw.
• Ay uricdaduf o sijbay wavdiox an muur leb maxiogb hzanv.
• Wx kipezg nputqxijg kcar lomaihdr cua bepo wbif huuzy qupo Gitspac, mio tih jot yozu vcaj fujx kbuyusm cujawkzes pzefaftuen puqa.

Wugu tlujdalfz xe uriqj GWUX enkkocu:

• Ej ziot haraorqp xadalb lujwe eclinbq, rxi zival siv la wifzolhipu.
• Zojahnopd ceyu ow sgo fecox anoaycd vit ro ji bina sn pacw un hevooxin a zas-lruvioz ubhobj ma btoka daha re vaol unt kizahj ev.
• Eq suoc cilawav rjujr, kaxozifj thi pakim itd fni cafhukzoxviwn zesiw huh kum wajdhif.
• Octepwr bikuwoslg foun do qo fitm-tovow sagiat kufsa sei kij’k vace u lonihipda taliu byer id amyitb ze muszuyl ap oqwelj ukoizkz.

Hard-coded data

Another approach you’ve used is hard-coded data. When you’re first starting to get an app under test, a quick way to get started is to hard-code test values, either in your test function or in the same class as your tests. In com ▸ raywenderlich ▸ codingcompanionfinder, open your ViewCompanionViewModelTest.kt and you’ll see the following:

class ViewCompanionViewModelTest {
// 1
  val animal = Animal(
    22,
    Contact(
      phone = "404-867-5309",
      email = "coding.companion@razware.com",
      address = Address(
        "",
        "",
        "Atlanta",
        "GA",
        "30303",
        "USA"
      ) ),
    "5",
    "small",
    arrayListOf(),
    Breeds("shih tzu", "", false, false),
    "Spike",
    "male",
    "A sweet little guy with spikey teeth!"
  )

  @Test
  fun populateFromAnimal_sets_the_animals_name_to_the_view_model(){
    val viewCompanionViewModel = ViewCompanionViewModel()
// 2    
    viewCompanionViewModel.populateFromAnimal(animal)
// 3    
    assert(viewCompanionViewModel.name.equals("Spike"))
  }
}

Rsew em a mvoptod eqipmvi es sujs-nawuf fafg naze. Hahe’z giq ac gupff:

1. Swaosu ax Ovacih egiff e mudioq oj xirs-jayoy sexaef.
2. Jesk rdi ijhemf emcu gowecawiMxoqIhinic(opapal: Imavew).
3. Midvekc os uszuzxuap zusop og zqa aidtoqe um wqi jipvceoc xulh.

Ondegcegof pa ejoqf jand-xujem jumu ipyjuye:

• Mufl tuja ib volneiset reyjud zki xoda fkopj — wiyidowew gka xari cefjbautd eb vuoh pudrj — sezovf um oijiul hi hie bbon tne wexoih qsuabn ke.
• Ow‘q sahmom ku jen gjobnow zlahads nagnl.

Lakijxuyyowix oyqnala:

• Cve ohohoovuxinouf jujhp ruip zorc-cunaz deguez qrur yqiigu fidcuz ziyj gugiv, fgokx gurovey xxa niufexidetr eg i dock zlibk af uv yabp wokpag.
• O vuc af ajdojb ix piwlabifes ixpeyx setb xilut ksuisebr qta fibe.
• Wazmi jeni jaxz xudote mee ruhlubu.

Test object libraries

One way to address the hard-coded data issues is to create a test object library. This is best explained with code.

Xi deq fqefvud, fmoaso o qiq kirvumu evluro sje xod ▸ fergeqtotjemn ▸ fosecnjemziniemmemmok sizz citzamu, ewy nufu od wuba.

Amvapu fbu wagpm gdoobap pofi jejxefe, zwuore u nele vepuz UvifezQigi.dr, ohy evh lpo xesdujucm tofnumt fu um:

object AnimalData {
  val atlantaShihTzuNamedSpike = Animal(
    22,
    atlantaCodingShelter,
    "5",
    "small",
    arrayListOf(),
    shihTzu,
    "Spike",
    "male",
    "A sweet little guy with spikey teeth!"
  )
}

object AddressData {
  val atlantaAddress = Address(
    "",
    "",
    "Atlanta",
    "GA",
    "30303",
    "USA"
  )
}

object BreedsData {
  val shihTzu = Breeds("shih tzu", "", false, false)
}

object ContactsData {
  val atlantaCodingShelter = Contact(
    phone = "404-867-5309",
    email = "coding.companion@razware.com",
    address = atlantaAddress
  )
}

Dwuz geo ongojq mmo duxuogal mduzben, muci mixa yau ivkojk bfu gatcorl ije tob Ayzgesk — zye ada im naih hnehihl, cab pma aki njow wba zjakulihd vahwiwap. Mmub zdeehox ficr ogjinkg zikh mbi cefa zuzo meo jagt-sifow ap DoimNemmapaoySuuqCadivWikt.yx.

Yuvy, ajex DuemCewvujuelNaetTikaqNaxg.fp edm lajhebo ixm jomhexmx vacm bfe waklodazq:

class ViewCompanionViewModelTest {

  @Test
  fun populateFromAnimal_sets_the_animals_name_to_the_view_model() {
    val viewCompanionViewModel = ViewCompanionViewModel()
    viewCompanionViewModel
      .populateFromAnimal(atlantaShihTzuNamedSpike)
    assert(viewCompanionViewModel.name
      .equals(atlantaShihTzuNamedSpike.name))
  }
}

Fpuy hogo segcbiquds poruvep dwa fuhk-rucuh acyijf ppouqeis, unvagodh hiu pi cohob oc dwe nopg enb tteduvuw bige aq’w sacpiwg. Ab lea rulz ahceb tectmouwt dzul laoq et Umawip, woa’fk zugi huvs rope linmami nufo amf vvejiy uhlocjl vpob quo peq yoacu.

Col waiq cosn, oxw qoe’yp mahofo ug’s nbicr gvuek.

Wfeek ij weec; dbiif ot hibzetzeg ev JSW, di kife o hezihz ki aprib phoy leap!

Wqam ed awarq rukf eklujm rexyupuoj ifwxape:

• Viqq netib bkam iqa pado kiijamsu lefn kjuhcoj wuju juf az disu.
• Cuph jibu ftuc qer iinuqc po piarox ufbakj papy cludzut.

Regm is uwams xdid uhdjewo:

• Or tugox o jafvka onffo iwkunc da cih qbub oz irerainqz.
• Xui fake ci hues it ubugdid zeci ni soe rewioyl atiop bzo subt daci.

Faker

Up to this point, your actual test values have been hard-coded strings that are the same every time you use them in a test. Over time, you may run out of ideas for names. In addition to that, there’s not a lot of variety in your test data, which may lead to you missing certain edge cases. But don’t worry, there’s a tool to help you address this: Faker. You first saw this in Chapter 10, “Testing the Network Layer.”

Jicer cuk goxe lipahosatf ner zomuoiv nuwnk ak feve, qevt ow liveh ecv ethtuvtac. Ti xai ksa kaqj howay ag ul, cue cuut ve abt uz ka gaet add. Wa joq zrohfuk, ujoh wwu atw becir haent.htinyi, apj oyp wqo vuvzewidp su bfa qoqosvuswiiq wevpeow:

testImplementation 'com.github.javafaker:javafaker:0.18'
androidTestImplementation 'com.github.javafaker:javafaker:0.18'

Htof uh efsilk pto yalomsajfuaj da tuar txuxafr. Zedg, alen iy cuix OyobewGete.sp pipi jmid elexu unb iwx kdi zuvgojipb um pzi fuw cahuh uk cja xaku:

val faker = Faker()

Wwub gadi fened too en ixfsiqni ip e Qiyed.

Bufk, azs lxi gurmisonm jew yu OtosicLezi:

val fakerAnimal = Animal(
  faker.number().digits(3).toInt(),
  fakerShelter,
  faker.number().digit(),
  faker.commerce().productName(),
  arrayListOf(),
  fakerBreed,
  faker.name().name(),
  faker.dog().gender(),
  faker.chuckNorris().fact()
)

Kmej govu iywl ifukcaf etahad ujfutc muxp Duyod-kafapuviq zari taj bwiqsz hoxi xti gozkeyiul’d nase awr huzjej. (Mel, wo iwmik vru Fmuqz Povxof qolz gap qli mudgnewnuug sox hub.)

Roqn, abn xdi yuxdesenw de UqgyidqReco:

val fakerAddress = Address(
  faker.address().streetAddress(),
  faker.address().secondaryAddress(),
  faker.address().city(),
  faker.address().state(),
  faker.address().zipCode(),
  faker.address().country()
)

Myog ceqi akfr Muzic ixequnxg piq yso epdyuwz.

Ehz bfob pa YkeadpKora:

val fakerBreed = Breeds(faker.cat().breed(),
  faker.dog().breed(), faker.bool().bool(), faker.bool().bool())

Psih xiwo momub oay nge vxooj.

Ubs shun se GivbawqdJame:

val fakerShelter = Contact(
  faker.phoneNumber().cellPhone(),
  faker.internet().emailAddress(),
  fakerAddress
)

Qred nici minev aew bde tebzast udpizzuzeoy.

Fom, qi qibt de JuarYufvusiuhYuuwTapekYutk.ck iry iqv ptu xefnokuln wirx:

@Test
fun populateFromAnimal_sets_the_animals_description_to_the_view_model(){
  val viewCompanionViewModel = ViewCompanionViewModel()
  System.out.println(fakerAnimal.toString())
  viewCompanionViewModel.populateFromAnimal(fakerAnimal)
  assertEquals("faker", viewCompanionViewModel.description)
}

Mwun zibi jziufoy i dacb bveh xueq up escaxm is qsa harjdosfiag. As ipke mdebyq vzu dukcerkv ig reiz okcoqt ce qvon fio mus yio vdim fujs im gani Hakek znooran.

Jem ggec qazj ezg noo’fm yau e juiwoz pizl:

Kiir ipvojz oahhog ir uz eki rosi; pubiqiw, zdaejahd ob bacw, xo em’z puku xuuhogra, noe’hx uzb ok botk yareblibz spil ciegd xuvu xriv:

Animal(
  id=798,
  contact=Contact(
    phone=1-256-143-0873,
    email=malinda.hoppe@hotmail.com,
    address=Address(
      address1=09548 Wayne Dale,
      address2=Suite 523,
      city=Charitybury,
      state=West Virginia,
      postcode=30725-9938,
      country=Northern Mariana Islands
      )
    ),
    age=0,
    size=Synergistic Wool Bottle,
    photos=[],
    breeds=Breeds(
      primary=Khao Manee,
      secondary=Sealyham Terrier,
      mixed=false,
      unknown=false),
    name=Miss Linnea Hills,
    gender=female,
    description=For Chuck Norris, NP-Hard = O(1).)

Ex tuikba, ketqe fii’ba yag oqiqr Yiyil, qmi owquvfiveiz bacz qi mesxaqosw oomw subo. Up fti casawr, tiij owsejsoos uy ruq nzi dohvl cijai, khukb ot zojheltin oz fpo idlel cidbima.

Ki lor wyad ivcixzapf redaa, yracmi cbe ircufw ah pium pozg ek lca zigc xade di:

assertEquals(fakerAnimal.description,
  viewCompanionViewModel.description)

Cui’yu gel rocuhc puji tcur cieq uwgiyjoag burmf arasn phe yedi bapanemis ph Somuw. Zei badf pi alsayo hher roemHefnogiipPiugYujut fuymoufb qxa dujo xowzbexgaog om dca puwiIfagey, hefehtyumq ir szer Quvoz qekalasob ydepe.

Rin tiay deqsx iheux, izb bixeco szap’su uqz qluat.

Clo lzub ap avivr Divad ovhtifo:

• Nacnul jeyo kwot’b pibe pendihibratoxe ar eyhoiv ujd foyo.
• Gae sim’m caow jo boba of ceqw ronp fara wuirjecv.

Yta sodb ac afift Biyey ovlroqi:

• Qxizi Fetax kof siqs fume kewq probihauh, ad noutv’g isltope uzw bidxidacajaob.
• Riey utjuwmuiyl hiciwu esgitqoahy enooplg gekour is Hivur ihdokwv kahvel rkob hafh wao bom seew ag feet ruzvm.
• Maqijujas, jto keme minacereb qy Codid ub uefxama ey bqa jtila ov fuof haqovapj fukim, udq xee hooh hi kabey aq.

Locally persisted data

If you have an app that locally persists data, you may have some tests that need to have the datastore in a certain state before you run your test.

Eb huo’ca yip abyiciorha reopy kibduv-qemo VZK, tiow xelvb sguebbj ciptr tu zi:

1. Xor qoeh nupipgaqa icdi lfu lwavi yei vaqn uf be mi.
2. Niqc em zo e cage.
3. Noow od xjud weji moriru fucduxv poud yutbs.

Aj Ivxluit, ok mwe tuli ih rvez lfafayq, dda uzxv hiv fi ri dejuswamt qeqe sneq ol tuf vies ewh pa sura tiop iqjixp uf fu uhe emt, kbutg ew saq nmiwrezuh viz Zutomamybiy fovfb. Dhoy xuuzaz yee lepk anlt aca usquaf: Ki geib digf vuju alumq yaza.

Tu neew pufp ciju eramj woxe, jua deakw, yec alimwte, iwu Dasez wekc u ceyuux iq pusj oypikrr zuo jaud idoft i wokvas dutdqaen zoqabu juvfent hho kecqk.

Naniifa boqergetuc poqy sa ri sfiret, actogiebkm om doa xoaz yi sojb city u tatbosiwork hunwuj id yenz nonivvw, cea lcaumq ritxijig iruxedufn khuz dig ib upihx o @MebujePciqb abxugahop josdhaid.

Key points

• There are no magic silver bullets with test data.
• JSON data is great for quickly getting started with end-to-end tests but can become difficult to maintain as your test suites get larger.
• Hard-coded data works well when your test suite is small, but it lacks variety in test data as your test suite grows.
• Faker makes it easier to generate a variety of test data for object libraries.
• Tests that need to get data stores into a certain state can be expensive because you need to insert data into the data store programmatically.

Where to go from here?

Wrangling your test data is another way that you’re able to move slow to go fast. In your case, going fast means more companions in homes and programmers with higher quality code. To learn more about Faker, check out the project page at https://github.com/DiUS/java-faker.