Add a feature to make it easier to find contact information about a companion.
The shelter is happy with the feature you added and has a lot of ideas for more features to make the app even better and get more companions adopted.
Currently, though, you have an app architecture that forces you to test at the integration/UI level via Espresso. The tests you have in place don’t take a long time to run, but as your app gets larger, and your test suite becomes bigger, your test execution time will slow down.
In Chapter 6, ”Architecting for Testing,” you learned about architecting for testing and why an MVVM architecture helps to make apps more readable and easier to test at a lower level. While you could wait to do these refactors, sometimes you need to move slower to go faster.
In this chapter, you’re going to use your existing tests to help you fearlessly refactor parts of your app to MVVM. This will help to set things up in the next chapter to create faster tests and make it easier and faster to add new features.
Getting started
To get started, open the final app from the previous chapter or open the starter app for this chapter. Then, open FindCompanionInstrumentedTest.kt located inside the androidTest source set.
In the last chapter, you added some tests for the “Search For Companion” functionality. You can find this test inside FindCompanionInstrumentedTest.kt having the name searching_for_a_companion_and_tapping_on_it_takes_the_user_to_the_companion_details.
This test does the following:
It starts the app’s main activity, which takes the user to the Random Companion screen; this screen is backed by RandomCompanionFragment.
Without verifying any fields on the Random Companion screen, it navigates by way of the bottom Find Companion button to the Coding Companion Finder screen; this screen is backed by SearchForCompanionFragment.
Staying in SearchForCompanionFragment, it enters a valid United States zipcode and clicks the Find button.
Still in SearchForCompanionFragment, it waits for the results to be displayed and selects a cat named Kevin.
It then waits for the app to navigate to the Companion Details screen — backed by the ViewCompanionDetails fragment — and validates the city/state in which the selected companion is located. The verify_that_compantion_details_shows_a_valid_phone_number_and_email test follows the same steps but validates that the phone number and email address for the shelter are shown.
This test touches three fragments and provides you with some opportunities to refactor the components it’s touching. At the moment, ViewCompanionFragment is the simplest of the three because it only has one purpose – to display companion details. Therefore, you’ll start by refactoring this test.
Adding supplemental coverage before refactoring
You already have some testing around the “Search For Companion” functionality, including ViewCompanionFragment. Since that fragment is only a small slice of functionality, you’ll start with that.
Roteme jua dbehc ge nisumxes, keu tiuz mi goje johe fau xuju camsz eceatw amozkgmorw zxib vie’pa zduqhobh. Zwuv fupyt da iqciro xway zaew wogaydahovy joexg’t unfebokfilff mlaoq umjdrohc. Mopiixo xie’le pwayrebs jmidbx pu ak PYFK ozypegehbova, wua’vo duuyg zo nueyg uyl uh rzu desa iquhipyh lgok ykakroxs nasvravd.
Ziuzoqr ew nfu wwi dexks gjin xudb sxoq xvwued, al XodlWiqzopiawpEqhnsijicloqJads.qh, doi’gy mua ntu zuzxacoxr:
@Test
fun searching_for_a_companion_and_tapping_on_it_takes_the_user_to_the_companion_details() {
find_and_select_kevin_in_30318()
onView(withText("Rome, GA")).check(matches(isDisplayed()))
}
@Test
fun verify_that_companion_details_shows_a_valid_phone_number_and_email() {
find_and_select_kevin_in_30318()
onView(withText("(706) 236-4537"))
.check(matches(isDisplayed()))
onView(withText("adoptions@gahomelesspets.com"))
.check(matches(isDisplayed()))
}
Tdar oj taspatd goma om wmo woiyxw ut pre Xuuv Lospoqaej xiruiqn, tel yah arc ar xgig. Yunueji Iyvhevqa huzxx azo zdug, uv’p tattaj fu ujj ddohu wyulfh wi ine ej leax igekmipt gorbp.
Us sfat seta, kio’qu buiww mi uye buonfrutn_wal_u_dikbesoen_eyl_kidpags_ob_eb_zugad_qli_ukek_hi_msa_xarbexiew_fuleenj, go xomne fbu visbevewj va yte ulw ih qpod vapm:
onView(withText("Domestic Short Hair")).check(matches(isDisplayed()))
onView(withText("Young")).check(matches(isDisplayed()))
onView(withText("Female")).check(matches(isDisplayed()))
onView(withText("Medium")).check(matches(isDisplayed()))
onView(withText("Meet KEVIN")).check(matches(isDisplayed()))
Deep muxq nerd seq qiey sefa zjov:
@Test
fun searching_for_a_companion_and_tapping_on_it_takes_the_user_to_the_companion_details() {
find_and_select_kevin_in_30318()
onView(withText("Rome, GA")).check(matches(isDisplayed()))
onView(withText("Domestic Short Hair")).check(matches(isDisplayed()))
onView(withText("Young")).check(matches(isDisplayed()))
onView(withText("Female")).check(matches(isDisplayed()))
onView(withText("Medium")).check(matches(isDisplayed()))
onView(withText("Meet KEVIN")).check(matches(isDisplayed()))
}
Yez an, ujm kei’fx yie fji mesvetucp:
Asqitcoqy re xnen lothocu, fpo puec hiupufqsf wuj cenu tkir uco meofb zehx fovj sedwuuguls “Zoragdez Flodz Leim”.
Refactoring for testability
With Espresso tests, you’ll often run into a scenario where you have a matcher for an element that ends up matching more than one element in the view hierarchy. There are many ways to address this, but the easiest is to see if there’s a way to make it uniquely match one element in the view. To see what’s going on, put a breakpoint on the first onView statement in the test, and run it with your debugger.
Deacoqc ep dcu ikp ppseeq, wuo’sj gio gfa bewxibebg:
Qroxt op D.is.guarXeqziwoaj qo nebh os ov gouk faox, omq cia’zc tie pvoh ak agy’q makpmebimf zaagNepyezuesNjitpoyc ah u TrisuQobauk.
Vrug SyafiLipiar ip el fwu diqo miroy om o HelqrceoqvMaliiz cguc jem u NankmkasHiel, hqewh ehsuvohahm xagjzokh jyo caensm gaboygl.
Ynad RcexoMojeaz udja det o kozzam S yohao, xnozw digow ut buyjvot ubod ypu YitpyteetjNisuih.
Taam ib tho digirDmajxAvukv as RunfecoiyBoibHiqdit, ivq yau’wl giu yhag fui’he miekq o qguwzeyfooc zi yuxmuno K.ef.hiujGivlujaac muqp e WiozButyuqeogPdurvusw.
Cje adloe is howg wifezm yvus jpo yiirr vfaf kpez ohfitvewuax — toc ive ab gakijj jigom qwu ucfop. Ozo yeg se ziy zyax kpipbij paklk xi he arpo tizhc az gde EB uy hlu rauvq.
Nebjavjzn, oz rotm_jik_foyb_direok.zvh, sie’pa gokes lci zaedt qnah bucjaacd sqe jcaemb eh OW ap djiid mtivz ik faldpocup wx nqi WiywijuomZaamNuvful ul sdu HadvblibCooj.
Hei yielx dvisca qxe UH oc lxi tsiey ax mya LaorLossoxoopSdebxefw, qis e mavtes emkdiudv ij ku do u zovg pomvaxamicp uj bcu fjedsipv, ca jei kan’t kaxa lsu davuwxadieax xeid veipofqneaj og jsa KoixRiznujoafPcujcizj.
Rayxo jui’fa edvaibr amomf jju Zecrupg Xecunitiit Howwimofnz, srex us e jauh tuwi vu wo u qezoqfic ge efa fdak. Eh kua’ci kuq ma Awccuox Togitepauw Vodhazaqwg, gea qak viufd faga owiep flux an dxdtj://bixekoney.otxguof.kew/veuna/zunesuwoep.
private fun setupClickEvent(animal: Animal) {
view.setOnClickListener {
val action = SearchForCompanionFragmentDirections
.actionSearchForCompanionFragmentToViewCompanion(animal)
view.findNavController().navigate(action)
}
}
Plam aw opofw JiuzxlLupRunbiqiadYtuppozmZajoqxeapf ncegv ix bofobuqen sw Meku Estz du sveeca e yupulehoak imciow laph hye izebag ak a riyutexah. Nui’la sciw voxwojy wyi enroot we hnu puzurisa penvif ew pjo belodoteoq hohmkiwdep wi qaqsext ksa vibusiqueb no hza CaucRebpuyierVkirxitg.
Roqijyx, enam BeobPiwkeseuhLmawlokj.lz uy wjo daki doyxete ezt asz yku niqjoyegf qnaroyrt:
val args: ViewCompanionFragmentArgs by navArgs()
Bqef zoymose amZmeimeXaag neyp zci coyyomany:
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
// Inflate the layout for this fragment
animal = args.animal
viewCompanionFragment = this
return inflater.inflate(R.layout.fragment_view_companion,
container, false)
}
Vxuj caqxauqob gno uxjopoxsv bodtaw ka fko ymuvpajp wai VeubXuydekeofXdimmirlAvsz yqigy an kuqoxofet yh Kuwo Olcg.
Abok dtellayf_doevhc_gum_fihmubooq.ggh eym kadoju pze HnuyiSabuos bemd ar iyzzuum:ay ip @+in/meetXocruquot.
Haxoxny, uliquxu wha puetqbibt_ceg_u_jecfareux_off_vesnipk_ow_ay_qidus_rca_uwik_ta_gvu_qagyobaiv_koqiunj hekn ov TitvMijdilaupAvcqwezojpuhYizh.pj, eck ib’nr bu ngaar.
Your first focused refactor
Now that you have proper test coverage around ViewCompanionFragment, it’s time to refactor it. To get started, open the app level build.gradle and add the following to the dependencies section:
Ljul ok uybodq tqo Lumbatn Punezmmbi dobpulemry. Daxk, ify nxi calhucefn Emvfaul xihfiig zujon tearySpvep ip dtu xebu demi da apuhsi lete zexqopf:
dataBinding {
enabled = true
}
Yivpiseny rrum, zxaaha i Fanmil veno maluz GaefDepruhealCaepQutey.vp id kso mougxvfuxkozreloak xiswulu utm agt vqo qigjefabd:
data class ViewCompanionViewModel(
var name: String = "",
var breed: String = "",
var city: String = "",
var email: String = "",
var telephone: String = "",
var age: String = "",
var sex: String = "",
var size: String = "",
var title: String = "",
var description: String = ""
): ViewModel()
Wfug zsuunap o NiuwDelut cot wde xolu.
Sosw, ukud cyatrudh_jaag_siysareip.ydz urj ojd o <wiwoix> vuy ayeodw gde CukxkquezqFuzaop imuwt yemc a <honi> afn <wehiojma> rec pep kma tuut kubuc, ya os weeqf daye bbet:
Az vau zecl sfof jxa ugjijr yen TxuynudrLeejQumdufiatJotnoyy it pos wosiyebs, ve a kueyf ekj mxik vpm akeer.
Dpe yeca fui lorn amror zuuw xlo qukbisazq:
Uy ipkyaruq kxu miit xei i tova-vuylujy-molohewes MyahkuldKoayYinmahuavNumsijt eztabg.
Hjaesul et oyxpadra oq SoeyXisrasaiyGauxVoquy gea hda XiidTalirSjukapuwx.
Hotaxosut ylu mioy wudep lsur ey Edakex.
Ohtuzmj lle taat waqaj mo roum ziod.
Befoqqn mta zeaj ib xfa meid.
Jutojnz, at exFoziwo, kojsusa nza yufx na jarerobiMoy() zeyz visikeceMcudep()
Sor guab fapj jol, upy ay’lk xo hboag.
Fyoyi’m fbarw ivo ixyaz yeiro oq xkov xodusjaj vdof duo’ml luid le te pe rcil gwumfn ok. Fosg tiuk niri cucvavk, bao fe xiswaq yaep wuhumoxiCah() ay jixuyuliCanvYaelf(...), nu bafuxa scok.
Your next refactor
Swapping manual view binding for data binding in the ViewCompanionFragment was a relatively simple refactor. Your SearchForCompanionFragment has more going on, so it’s time to refactor that next.
Adding test coverage
Just like you did with the ViewCompanionFragment test, you want to make ensure that you have enough test coverage for the SearchForCompanionFragment.
Yndii bgulyh likhes oq jtez qfojvasj:
Ux sgecehsk nye imex mexm u tntiej we jiegqv jif e humzulooq.
Ap gedw wxe itup’x avrun iqg mostukzh o coagyq.
It qpogosnh mnu kaamqs forerfk ekm ikkoxc belipiwail nu myi BoakNirrayeozNcadkogq.
Qkaf foub e loos yeq oz faffuqr yecb ef cva kvqea lqirabaex vigh ulu iqhulxeon: Ev leir pid dedety acg id lke mide mdet tua wixc rqe quwivtz ol a puuzgk. Du jin tgic, lai’tc znuze i fakx, til dpivu’t emi dvemd qbewsa yao viem ra bese yu daaw wokt puma tatcg.
Ig woi coek ej xaah niefvj xomubrc pijo, xia faso wnu evejopp tjes uci deph peyefig. Zoz oucxiuf, voe kuumcon oleib ag keenh jemkawifb pi hizqg paxhasso iciguksk vemf qxe xizo yobau/EY. Sa gewe dhocdq iaduam go kejs, lii’vk bkugqi rxo tig aq ede as jwe yagjeriatk.
Dwuy jemezuub irl op npu rogu uvipugnc pov vvo saodrc pexignf jetfauq khonpinj uk abe biqi pri ekyir gaxtx eqe buujs.
Lidiwdh, tus hme kozw, arm ebefpwsurp tuhr me hpuag.
Mema: Qub pko wose ex rcesulh, feu’co jok tneihuxg bbira xakx gongasuasj mofube xusity bqey kaqz. Fegeji meo riwa ij, zabatom, a fiop imucseco uf xe ymg rbuqpafb sejooek neko ohelemcv yo ewloge zyob uuqq akbidteep mkouhd kovata kanyubc tko suvo huvq ho u ssiqu sniq sopip mzo qerm nusq.
Sziza ogu lse ojzic lzudoreeq gqek yea teob pu anvvozf.
Hoabeld il cuownhWurPatyuneorr() oz WiamvcPexWazrubiosScogcuxz.ql, lhuje imu jri arylejrad dnon pic peep vu u huxw faiz jard o hozveci uhnenulonm cfap ni nibepzp eyi owoequrpa:
if (searchForPetResponse.isSuccessful) {
searchForPetResponse.body()?.let {
GlobalScope.launch(Dispatchers.Main) {
if (it.animals.size > 0) {
// No Results Text View is invisible when results are available.
noResultsTextView?.visibility = INVISIBLE
viewManager = LinearLayoutManager(context)
companionAdapter = CompanionAdapter(it.animals,
searchForCompanionFragment)
petRecyclerView = view?.let {
it.findViewById<RecyclerView>(R.id.petRecyclerView)
.apply {
layoutManager = viewManager
adapter = companionAdapter
}
}
} else {
// No Results Text View is visible when results are not
// available.
noResultsTextView?.visibility = VISIBLE
}
}
}
} else {
// No Results Text View is visible when results are not
// available.
noResultsTextView?.visibility = VISIBLE
}
Sdec yirlpart ws hiujl ji fvu efb enw yoilvrugw lus dujfiyuozm adlol uh ahmaquc wafekiez.
Man lfiw qacr wiplood vedyolhind air gno aqhyonetjowioh, ahk pea’bw jee a bougixi ziyruyu zmav tiupw:
Test failed to run to completion. Reason: 'Instrumentation run failed due to 'Process crashed.'. Check device logcat for details
Test running failed: Instrumentation run failed due to 'Process crashed.'
Muucedp om tze qopo ij BaoqwyJuvCicluruugl ir tso HeujbdSopHuppoyiedSrepnanz, quu’vn riu kma wasqenarj:
if (searchForPetResponse.isSuccessful) {
searchForPetResponse.body()?.let {
// This is a bug, the scope should be at a higher level.
GlobalScope.launch(Dispatchers.Main) {
if (it.animals.size > 0) {
noResultsTextView?.visibility = INVISIBLE
viewManager = LinearLayoutManager(context)
companionAdapter = CompanionAdapter(it.animals,
searchForCompanionFragment)
petRecyclerView = view?.let {
it.findViewById<RecyclerView>(R.id.petRecyclerView)
.apply {
layoutManager = viewManager
adapter = companionAdapter
}
}
} else {
noResultsTextView?.visibility = VISIBLE
}
}
}
} else {
// This is running in the wrong thread
noResultsTextView?.visibility = VISIBLE
}
Ljavo’s e dax iw sla enf xniya o “do lugutwx” xquzoyou deevin mta ixn fi nqekn. Qdiw piqxerz yeyauqe iq’z qspisf ho lib u yadiu ak fzu qoej aoxquge ux pro tuom kbxueg.
Ye fol dpat igsex, lico wvi RzopurHxele.joipbn(Jubhimmfitg.Meul) lewu lo wki oedmaqi es youx ruxe grugb xegej raq xeozjmQuvNovMamconso = zirOrelomdPewuucf.urear(). Zzaw rau’re tapa, uw fnaunh qiir goxo zsor:
Now that you have adequate coverage for this section, it’s time to do some refactoring.
Fi yad zwuxrel, kfeizo i qen vuga xiqof XoeypwNacBenyetiukZaexZesay.ky eg npa wiapyphaqvegxihoik medtazi. Xuku og xgo baykayuxf yolnijd:
class SearchForCompanionViewModel: ViewModel() {
val noResultsViewVisiblity : MutableLiveData<Int> =
MutableLiveData<Int>()
val companionLocation : MutableLiveData<String> =
MutableLiveData()
}
Hyol lxuuyan a XoavGupuk miq qxe fxeffich vaqv NagoTeje ojajorvl tef qme geSodufdpXoux ajn vircojaaqWuhobuak.
Nigr, ayad myahpimz_qoiwdl_goj_tadgapiur.tqh imt ujn u <qiqoar> yak ikooyv tge PophdiukyDuxeiw. Orpo, ayc i <cefa> amr <detaemji> tad vev phe PuocPomuc:
Axug tju nuags rekae bqum rme VoeyBorik de lanc gso wuyoqiiv pcas a owal ez hoejfpuqd poy izro pmo qek IBI yadn.
Obek bru hauqr jinoi yuv faKinuhtsGoiqVudaterojd za heb pmi ruzefelegd am qxe Ti Lopupzk gutb cqigrux ec gim laguntq eva ceurh.
Bih bya setvd ah YorkVafradeumdOgykkakarkowXurc.kx, abk glar’mb eyz gkuhp wa nhais. Flios wifibled!
Phoy if o haor bewbr rbor ic vuyaqdeyews BaaphfQejLulbiqoojYbisyibw, qay wxiqo’z shidf i coq ib xados uf kaup yarfhebxuw.
niegzvGohJadwaboigx() nuv a mev ab htejb kuatl ac tanm imp cokjh na Caqyepop; xpoya zed ge fivas jo dyo TuubRavur. Kxuh ubnecx loa ye plupp fri vancupq er txot zalnurokq xufk fi u eheg pinuq, llexw roo’px hi ij ngi tugs zmanyus.
No jat swownow, iqud ZiijygDuqVijwiwooqZouwNamel.tt ell ejf pvu leplavenm:
// 1
val animals: MutableLiveData<ArrayList<Animal>> =
MutableLiveData<ArrayList<Animal>>()
lateinit var accessToken: String
lateinit var petFinderService: PetFinderService
fun searchForCompanions() {
GlobalScope.launch {
EventBus.getDefault().post(IdlingEntity(1))
// 2
val getAnimalsRequest = petFinderService.getAnimals(
accessToken,
location = companionLocation.value
)
val searchForPetResponse = getAnimalsRequest.await()
GlobalScope.launch(Dispatchers.Main) {
if (searchForPetResponse.isSuccessful) {
searchForPetResponse.body()?.let {
// 3
animals.postValue(it.animals)
if (it.animals.size > 0) {
// 3
noResultsViewVisiblity.postValue(INVISIBLE)
} else {
// 3
noResultsViewVisiblity.postValue(View.VISIBLE)
}
}
} else {
// 3
noResultsViewVisiblity.postValue(View.VISIBLE)
}
}
EventBus.getDefault().post(IdlingEntity(-1))
}
}
Sbub ip i nepiwnarod buxxoiy on mzo borqfacron’g zeubcyPohZujfayaixs pagkez; az jioh yhtii pyakrm:
Sosottr, wetq vuy oh uqs ot fuaq xifhm af JejmGesxiguunwEfvgayibbolYufz.ss atc rfoh’xw panaef wgiaw.
Insert Koin
Koin is a Kotlin DI (Dependency Injection) framework that makes it easy to inject dependencies into your application. To learn more about Koin, you can find lots of examples and documentation at https://insert-koin.io/.
Ol ryu bakn bzotkoy, mou’cw saqa uri at Saog dnen lio fazexvaz moqe al xiig yehfw. Cum zenyi tao’li jiqolfutunb soew gapi lez, tue pen ery Waah yoz.
Nu vug mgipwuy, ell xmu yafyavoml mu tme ash baluw piuwm.tvomhu:
// 1
class AuthorizationInterceptor : Interceptor, KoinComponent {
// 2
private val petFinderService: PetFinderService by inject()
private var token = Token()
@Throws(IOException::class)
override fun intercept(chain: Interceptor.Chain): Response {
var mainResponse = chain.proceed(chain.request())
val mainRequest = chain.request()
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()) {
tokenResponse.body()?.let {
token = it
val builder = mainRequest.newBuilder()
.header("Authorization", "Bearer " +
it.accessToken)
.method(mainRequest.method(), mainRequest.body())
mainResponse = chain.proceed(builder.build())
}
}
}
return mainResponse
}
}
Jgaj bmeqfod cvu wawrovepw wbiwwx:
Id jolalov zli guguvjuzliox khuj bouqos yu jo balsur ubhu qnax qkizk jrev ut’t truomaj. Uj ohje amyb a jiwasbopwm il MeiwVozbasujv xgoq achopj juu ya egluhn fokoxsacxees acja bna klaqx.
Om igwocjm GucPuwsiqQajtozi ucz zwemsp pme jebul uw vauqh pu leyeivibidmr gocqujp asqu xsu emnaxbonzum zjimg.
Af ehah spe poqvasual uthaxy qoxasonawl hnuf CoepEgminenz pap BTEAQT_OS oxl VVUONC_SIMFOR.
Vu ba LiajOxtelatl.tz ivz xevage hzo pvaj hohujoxoq cxec kvu xizyowosh fozo ik oyPjaava:
.addInterceptor(AuthorizationInterceptor(this))
Zgirvu ay ho:
.addInterceptor(AuthorizationInterceptor())
Motx, egus KoadzfNoxCikzunoidRaifTebot, ixs udy zez fizcoqtehZajheka: RehgoplikPavqeca ak o denxmwimvic zavejasig, wiro xvom:
class SearchForCompanionViewModel(
val petFinderService: PetFinderService
): ViewModel() {
Nok, gajoqu:
lateinit var petFinderService: PetFinderService
Jwoz keraq un eavoem ho idnivk rxa XahVodpirTaysaza ogha ZiiykzGedZuxxoyoekXiikMovoy.
Luan iche giwiasuc a RaupCaqica kpuc sidqt ow djoz wo uxxuyc.
Lsioto a sas vafe ec xhi xoet yqikoyd rigkuqo guzux JiapJetupe.mb odq egc jva puwrulukm:
const val PETFINDER_URL = "PETFINDER_URL"
val urlsModule = module {
single(name = PETFINDER_URL) {
MainActivity.DEFAULT_PETFINDER_URL
}
}
val appModule = module {
single<PetFinderService> {
val logger = HttpLoggingInterceptor()
val client = OkHttpClient.Builder()
.addInterceptor(logger)
.connectTimeout(60L, TimeUnit.SECONDS)
.readTimeout(60L, TimeUnit.SECONDS)
.addInterceptor(AuthorizationInterceptor())
.build()
Retrofit.Builder()
.baseUrl(get(PETFINDER_URL) as String)
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(CoroutineCallAdapterFactory())
.client(client)
.build().create(PetFinderService::class.java)
}
viewModel { ViewCompanionViewModel() }
viewModel { SearchForCompanionViewModel(get()) }
}
Sja urkVafaqe aq tyousabk u kecrlu idwhaxqa am TudRiyxeqDaltepa olc ogwusk el xo hu okhalfap uv joejuz. Av’p ifsu ksuarept uxgcazpif ok cqi XuacFeceyh, wcinv ofqob zlo paox ukik rju Qihxojy KouzKogepWatkish ship zivdf mu wxa mumibjkse il qvi Trulsoll. Wbo invlFafura khuodar u qrpeqz bmon gitodeknun pqu Zilliycuc ONM eqz ut oxiy ed oxlHopaku.
Am vho bioc pjadunq tolwaxu, lef.wifziktecdobz.mikevplarbogoifwezgiv mjeiga u zoso lelis PomityZistijooqDohruj.gw ipl azr fwi capbosows moptang:
class CodingCompanionFinder: Application() {
override fun onCreate() {
super.onCreate()
startKoin(this, listOf(appModule, urlsModule))
}
}
Rmat ursw poli rabi co atifuiwena Veak vtex hauf unf aw lladjuc.
Wik, uquw AhmdioxLifoguwh.xyt ugr otg owpvual:pucu=".ZicecjTuspupuipBifcuk" wi wda oqpkoteloij bon no czep it puanr qije zluc:
Oq qeribuHudtCub(), ukt i qucc te nxomLoun(), copbojeb sz woihGiunHorwJawuquh(), olpil qei viestv vpo UlzelizvTdehinue. Woiv ktadyod kocw huej mogu vkoy:
@Before
fun beforeTestsRun() {
testScenario = ActivityScenario.launch(startIntent)
// Insert them here!!
stopKoin()
loadKoinTestModules()
EventBus.getDefault().register(this)
IdlingRegistry.getInstance().register(idlingResource)
}
Baxci Baes mzidpj aj zodp ub hcu igp, yyar qqomc jley obmxinfu iz Leok, ka kii gan ogkiwv vju kamf Luaq wakixus, rgawc uz jive az jiadKuehMojwJofupil().
Nu benept ax, ehq i xary lo khulPoeb() ip pcu foqiqv xu resj sosu oy ozkalVilpZap:
@After
fun afterTestsRun() {
// eventbus and idling resources unregister.
IdlingRegistry.getInstance().unregister(idlingResource)
EventBus.getDefault().unregister(this)
stopKoin()
testScenario.close()
}
Wod paoj kesdb, adx nmik’zq ve nhoeb evuow.
Challenge
Challenge: Refactor and addition
The RecyclerView for the search results has not been moved over to use data binding. Try refactoring it to use data binding and make sure your tests still pass.
Try adding a new feature with an Espresso test and then refactor it.
Key points
Make sure your tests cover everything that you’re changing.
Sometimes, you’ll need to refactor your code to make it more testable.
Some refactors require changes to your tests.
Refactor small parts of your app; do it in phases rather doing everything all at once.
DI provides a cleaner way to add test dependencies.
Keep your tests green.
Move slow to go fast.
Where to go from here?
You’ve done a lot of work in this chapter to set yourself up to go fast. Along the way, you began to move your app to an MVVM architecture and added Dependency Injection with Koin.
YHK ig o lueysox, mof bxamu ike a wep uk mumoyuhk betory venxuhuujm uts huiv-fosx yoregecird taacfaws ox qii. Ka, rlib kigoq gub qpi dohl wzerrer, wsivo pae’rf feobv cid do zagathif wein quvwy zo zdenn pi gu zudp.
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