currency selected view model test

CurrencySelectedViewModel_Tests.swift

class CurrencySelectedViewModel_Tests: QuickSpec {
    
    var viewModel: CurrencySelectedViewModel!
    var disposeBag = DisposeBag()
    
    override func spec() {
        context("selected currecy"){
            beforeEach {
                //DB 리셋등 초기화
                Realm.deleteAll(CurrencyExchangeRate.self)
                Defaults[.latestSelectedCurrency] = ""
                Service.shared.mockRegister()
                self.viewModel = Service.shared.container.resolve(CurrencySelectedViewModel.self)!
                self.viewModel.deleteRef()
                self.viewModel.firebaseCurrencyExchangeRate.subscribe().disposed(by: self.disposeBag)
                self.viewModel.databaseModelObservable.bind(to: self.viewModel.currencyCellViewModels).disposed(by: self.disposeBag)
            }
            it("loaded") {
                //currency 목록을 통해 tableviewcellviewmodel 이 48개 생성되어있다면 성공. 필요한 값들이 정상적으로 있는지 확인.
                expect(self.viewModel.currencyCellViewModels.value.count).toEventually(equal(48))
                expect(self.viewModel.currencyCellViewModels.value.map{ UIImage(named: $0.currency.imageName) }.count).to(equal(48))
                expect(self.viewModel.currencyCellViewModels.value.map{ $0.currency.country }.count).to(equal(48))
                expect(self.viewModel.currencyCellViewModels.value.map{ $0.currency.symbol }.count).to(equal(48))
                let exchangeRate = CurrencyExchangeRate(currency: .usd, exchangeRate: 0)
                let expectViewModel = CurrencyCellViewModel(currencyExchangeRate: exchangeRate)
                expect(self.viewModel.currencyCellViewModels.value.filter{ $0 == expectViewModel }[0].exchangeRate).to(equal(1069.03))
            }
            it("selected") {
                //20번째 모델(ILS)를 선택했을때 마지막에 선택된 것으로 ils 나오면 성공.
                expect(self.viewModel.currencyCellViewModels.value.count).toEventually(equal(48))
                self.viewModel.selected(cellViewModel: self.viewModel.currencyCellViewModels.value[20])
                expect(self.viewModel.selected.value.text).to(equal("ILS"))
                expect(Defaults[.latestSelectedCurrency]).to(equal("ils"))
            }
            it("cancel") {
                //...
            }
        }
        
        //...
    }
}