你如何在 Xcode 中使用 Parse 編寫單元測試（在我的例子中是 Swift）？

Question

這是我的查詢。 它位於測試目標內。 我在 AppDelegate.swift 中設置了 applicationID 和 clientKey。

我在 AppDelegate.swift 中放置了一個斷點，所以當我運行測試時肯定會被擊中。 它還擊中了我在下面代碼第 5 行之前設置的斷點（customer.saveinbackgroundWithBlock...）。 但是當我在該行之后放置一個斷點時，它不會命中它，並且測試會“成功”。 此外，解析儀表板顯示未添加任何客戶。

我在普通應用程序目標中測試了相同的查詢，並且奏效了。 只是不在測試目標中。

func testCustomersExistCase() {
    // Save a test customer
    let customer = Customer(firstName: "Jonathan", lastName: "Goldsmith", email: "theMostInterestingManInTheWorld@en.wikipedia.org", streetAddress: "100 Main St", city: "Monterrey", state: "Texas", zipCode: "55555")
    customer.shopID = "dosequis"

    customer.saveInBackgroundWithBlock({
        (success: Bool, error: NSError?) -> Void in
            if success {
                print("This test should work.")
                self.customerSearchViewControllerDataSource.getAllCustomers(self.customeSearchViewController)

                // Check if it's in the customers array
                for customerResult in self.customeSearchViewController.data! {
                    if customerResult.objectId == customer.objectId {
                        XCTAssertTrue(true, "Success! Customer was added.")

                        // Delete customer if test had succeeded.
                        customer.deleteInBackgroundWithBlock({
                            (success: Bool, error: NSError?) -> Void in
                            if success {
                                print("Clean-up after test was successful")
                            } else {
                                print("Need to delete customer manually")
                            }
                        })
                    } else {
                        XCTAssertTrue(false, "Query is broken. Customer was not retrieved")
                    }
                }
            } else {
                print("This test will not work. Customer was not added to Parse")
            }
        if error != nil {
            print("This test isn't working. Parse threw an error.")
        }
    })
}

}

Answer 1

發生這種情況是因為 parse 塊在與您的測試運行不同的線程上執行，因此您的測試完成時不知道 parse 塊的作用。

要測試異步操作，您應該在 XCTest 子類中創建一個期望並調用 waitForExpectation 方法。 這是一個快速示例：

帶方法的視圖控制器

class ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

func getUserStuff(completionHandler: (succeeded: Bool) -> ()) {

}
}

考試：

func testGetUserInfo() {

    let vc = ViewController()

    let userOpExpectation: XCTestExpectation = expectationWithDescription("Got user info")

    vc.getUserStuff { (succeeded) in
        XCTAssert(succeeded, "Should get user stuff")
        userOpExpectation.fulfill()
    }

    waitForExpectationsWithTimeout(5.0, handler: nil)
}

測試有很多內容，Apple 提供了很多內容，包括代碼和文檔，請查看： https : //developer.apple.com/library/tvos/documentation/DeveloperTools/Conceptual/testing_with_xcode/chapters/ 04-writing_tests.html了解更多信息。