こんなかんじ・・? #CodePiece

CodePiece.swift

extension Charge {
    static var stubObjects: [Charge] {
        let JSON = json(from: "Fixtures/charges.json")
        return try! decodeArray(JSON, rootKeyPath: "data")
    }
}

struct MockWebAPI: HomeAPIProtocol {
    func getCharges() -> Observable<[Charge]> {
        return Observable.from(Charge.stubObjects)
    }
}

class HomeViewModelSpec: QuickSpec {
    override func spec() {
        describe("HomeViewModel") {
            var viewModel: HomeViewModel!
            beforeEach {
                let api = MockWebAPI()
                viewModel = HomeViewModel(with: api)
            }
            
            describe("#charges") {
                context("initial value") {
                    var charges: [Charge]!
                    beforeEach {
                        charges = viewModel.charges.value
                    }
                    
                    it("should be equal stubing") {
                        let stub = Charge.stubObjects
                        expect(charges).to(equal(stub))
                    }
                }
            }
        }
    }
}