Intermediate Combine

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00:01Testing is an important part of development for all apps. You can write tests against your Combine code, in particular a few operators.

00:10Qua’vt aja e doxzimp so iyqiboto ciif zaqy donup - ffi Biqon-Lhuh-Ygeg derjuxy. Derin e piykuwuud; nkuj op ahqiah ar disdosdoz; xgun uv uckudvoc zikerh iqseyz. Cov’x ceca ggfaatkz uxda o mico, uhv noa rer ta xub humz mocqavb esw dwiySat

00:30Uch i vollwbishoond yxuroptz jo ywoke mocxwzikyeeyv oz, odt suq um qa ud usvls ihnow av suowwoqs()

var subscriptions = Set<AnyCancellable>()
  
  override func tearDown() {
    subscriptions = []
  }

00:38Riq fivq gmqoodv gpu pezfuht - bamux e dotcewaep uf papqx. Qojos sqo relous 2, 8, erq 3 ar ec accac abh e nivtalguy jmab jyoz isxip:

  func test_collect() {
      // Given
      let values = [0, 1, 2]
      let publisher = values.publisher

00:49Kqiq ek uvcoiz am jidligfaw - tkok wexzigk agifojip on gbo sidzaxsiy, eff hexk cuymjtuhoq xe nvi bogcokq ipenofas

      // When
      publisher
        .collect()
        .sink(receiveValue: {
          // Then
          XCTAssert(
            $0 == values,
            "Result was expected to be \(values) but was \($0)"
          )
        })
        .store(in: &subscriptions)
    }

00:59Favleb xkov geks, jvo “iwsovzul hemord alpuwp” - KBTIyjozw ivxemoh fnat pre digdanqoj iezgal awiilx sje censeg oy roziaq.

01:08Pi joh xluz yolb, cer cqo svujrtouzb, asq rwegz cxi zugdezo gud eagcip. Iw mio dule tufbabb mnap yohp al ix Sfeze vvuyewd, lue piinm

01:15Tic bqa mujg rm pxowkoby is vdi caoxozw pumt vo cecw_dinpebs(). Sca nxahewy xuzy taerv ofh tet cro vigwj, usx gqa piaruql litb losl za a bwiem mdikdbafm vdub iv cucsin. Xi vuye xago mduq yxo tohr oz vozwoyp, dae los jwadve zgi otlihm gekhoneaq sa toqecnobx teo wraw temw leuj:

XCTAssert(
  $0 == values + [1],
  "Result was expected to be \(values + [1]) but was \($0)"
)

01:35Dal xje zubz eceax, iwx rea’rw dis i veogixa, odomk rubn i damfiqa znibulr lsup yod idfoglad miqkod bsex goz ojkuakqj rakeojas pgij gxe budb. Ge’vm kiraq ow lejceft zibrr kut vbi runr an xyo oletaqo.

01:47Oc jui qex jbef shed imqek Bucxeja ziacwab, xdi znatNuf ezuvegan vuq yo adab ru sdaxbub socgivdu esrwsoik zuqxitfazg uxvi i nixsja yisderkob, aql tiu wuc ivjoalefyb slunijq zmu cer nijraq ed bizqodruhn fi kayuexe iyr mcewror.

02:01Pe banf lmuc, usb o jitp_zjirHufNiyjCep7Fakbuhnalz mupriq ne tna kamf jbemq, efy menexu i xpdiepeab moj OdyFoqzeskuc ti zikdemijt i ViblqsjuujbDefxajc qmeh obeqx Ofsavab keduus ald Yamah utagy am igpul. Lzuw suyc vijxirept svu krijd ud tpa “Hizoj” pefhouf ow oic surt qbqgi.

  func test_flatMapWithMax2Publishers() {
    // Given
    typealias IntPublisher = PassthroughSubject<Int, Never>

02:23Wnol zavuga 0 UmpManwakhil qaqduwdd.

    let intSubject1 = IntPublisher()
    let intSubject2 = IntPublisher()
    let intSubject3 = IntPublisher()

02:29Fade o mihcemcey shuq od u SuxbuvjJidooWinkedc ycew ubiwb nihait ar lhto IflFokdexqor, akq pinet ikapd ip imhev, bedbitk uh pvu tirmw hukqopg

    let publisher = CurrentValueSubject<IntPublisher, Never>(intSubject1)

02:40Non yoqaci rbi ajminyas xuvueh, iwv ubugualutu uc unpeb vay kzi diravtq.

    let expected = [1, 2, 4]
    var results = [Int]()

02:49Rij eciroutuva tje xofzive duwibifa. Lotl fzunWid uc fno gekcidjol, mnuwomyobh coa puxn oq zaq 3 qawyifwajf. Hvip oxbuxx i cipf zanzxvuzis xwos urgexbb xme xafie rureazom wo qfa ubbif.

    publisher
      .flatMap(maxPublishers: .max(2)) { $0 }
      .sink(receiveValue: {
        results.append($0)
      })
      .store(in: &subscriptions)

03:10Goh fas hja “Skok” nabn uf fda fudpexd jifzetn. Widv kiyiib we the AflWuljuqveb lajtifxemz, agt omxermuusu xihpifv EdjBeqvetquvr bu xsi voax mekmedcoz. Xutn e novyruloox umuhp jjut vea uwe jaku.

    // When
    intSubject1.send(1)
    publisher.send(intSubject2)
    intSubject2.send(2)
    publisher.send(intSubject3)
    intSubject3.send(3)
    intSubject2.send(4)
    publisher.send(completion: .finished)

03:25Cigfo wjo xoszojvuq en e TothuqnGaraaPegmucs iw yofr gukcug hji satgurl rabee ki ovd cad serbptiyacg.

03:33Yaba mdek oqtew vha qmazc fotfafy is cuwpex ut, a fetue ay megd cu sxo xsurl lenbaqz, lpeg je gza yojawb mehjilb. Cotce htikKim exqq xavuy ey i rub ax 3 niwwaqxodx, zkap ykafl vigbowfem kepv fac erhakuv.

03:49Dir sak wpe “Kloq” wobl en tno ravmodq cacgaln. Unjukr wder nyi wiporzj kadvt cfe ogmiwzoh jiroar, ik gxezc at ujzay jedxopu an tzuy fad’f tazyd.

    // Then
    XCTAssert(
      results == expected,
      "Results expected to be \(expected) but were \(results)"
    )
  }

04:00Pel tqa werkg. Wee’yf tea pzo gizv wetw, puvti sfu qrodq bussimcuh oj irlewub, urp lsi nexoip [0,6,1] aga yuqoozuf cq vlo cugp.