我有以下要测试的功能:
func getProduct(ean: String) -> Promise<Product> {
return Promise { fullfill, reject in
let urlString = BSConstants.BarcodeScanner.productEndpoint.stringByAppendingString(ean)
serviceClient.GET(urlString, failure: { (error) in
reject(error!)
}) { (response) in
if let json = response {
self.storeProduct(json).then ({ returnedProduct in
fullfill(returnedProduct)
}).error { returnedError in
// HANDLE ERROR
print("HANDLE ERROR")
}
}
}
}
}
这是我创建的模拟经理。
class MockStoreProductProductManager: BSProductManagerSwift {
var storeProductWasCalled = false
var storeProductJSON: JSON?
let deferredPromise = Promise<Product>.pendingPromise()
override func storeProduct(json: JSON) -> Promise<Product> {
storeProductWasCalled = true
storeProductJSON = json
return deferredPromise.promise
}
}
这是非工作测试。
func testGetProduct_WithInStockEAN_RetunsValidInstockJSON() {
// Given
let mockManager = MockStoreProductProductManager(serviceClient: BSNetworkingServiceClient())
let inputEanString = "1234567891234"
var expectedJSON: JSON? = nil
if let jsonPath = NSBundle(forClass: self.dynamicType).pathForResource("getproduct-instock-response", ofType: "json") {
let data = NSData(contentsOfFile: jsonPath)!
stub(http(.GET, uri: "some-url-i-have-removed"), builder: jsonData(data))
let jsonResponse = JSON(data: data)
expectedJSON = jsonResponse["data"]
}
// When
let exp = expectationWithDescription("Return instock product JSON")
mockManager.getProduct(inputEanString).then { returnedProduct in
exp.fulfill()
}.error { error in
XCTFail("🔴 Instock JSON should have been returned")
exp.fulfill()
}
waitForExpectationsWithTimeout(10, handler: nil)
// Then
XCTAssertTrue(mockManager.storeProductWasCalled, "🔴 Expected storeProduct function to be called but it wasn't")
XCTAssertEqual(mockManager.storeProductJSON, expectedJSON, "🔴 Incorrect JSON passed to storeProduct")
}
我知道正在调用模拟管理器,但我的期望从未实现(未调用 exp.fulfill()
),我不知道为什么。有什么想法吗?
最佳答案
事实证明我快到了,但我不得不让我的模拟管理器返回一个 fulfill 并传递一个 Product
(NSManagedObject
子类)。所以现在我的模拟经理看起来像这样并且我的测试有效:
class MockStoreProductProductManager: BSProductManagerSwift {
var storeProductWasCalled = false
var storeProductJSON: JSON?
let deferredPromise = Promise<Product>.pendingPromise()
override func storeProduct(json: JSON) -> Promise<Product> {
storeProductWasCalled = true
storeProductJSON = json
let managedObjectContext = setUpInMemoryManagedObjectContext()
let entity = NSEntityDescription.entityForName("Product", inManagedObjectContext: managedObjectContext)
let product = Product(entity: entity!, insertIntoManagedObjectContext: managedObjectContext)
deferredPromise.fulfill(product)
return deferredPromise.promise
}
}
关于ios - 使用 PromiseKit 的单元测试功能,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/38874869/