ios - 有没有办法在UITest中将valueForKey与NSPredicate一起使用？

我的iOS UI测试具有以下测试助手功能:

func waitForElementToHaveKeyboardFocus(element: XCUIElement) {
    self.expectationForPredicate(NSPredicate(format:"valueForKey(\"hasKeyboardFocus\") == true"), evaluatedWithObject:element, handler: nil)
    self.waitForExpectationsWithTimeout(5, handler: nil)
}

在我的测试中，我有:

let usernameTextField = app.textFields["Username"]
let passwordTextField = app.secureTextFields["Password"]
waitForElementToHaveKeyboardFocus(usernameTextField)

测试失败，并出现以下错误:

error: -[ExampleAppUITests.ExampleAppUITests testExampleApp] : failed: caught "NSUnknownKeyException", "[<_NSPredicateUtilities 0x10e554ee8> valueForUndefinedKey:]: this class is not key value coding-compliant for the key hasKeyboardFocus."

如果我在测试失败时在测试中放置一个断点，然后在焦点和非焦点字段上手动调用valueForKey("hasKeyboardFocus")，我似乎会得到正确的行为:

(lldb) po usernameTextField.valueForKey("hasKeyboardFocus")
    t =    51.99s     Find the "Username" TextField
    t =    51.99s         Use cached accessibility hierarchy for ExampleApp
    t =    52.00s         Find: Descendants matching type TextField
    t =    52.01s         Find: Elements matching predicate '"Username" IN identifiers'
▿ Optional<AnyObject>
  - Some : 1

(lldb) po passwordTextField.valueForKey("hasKeyboardFocus")
    t =   569.99s     Find the "Password" SecureTextField
    t =   569.99s         Use cached accessibility hierarchy for ExampleApp
    t =   570.01s         Find: Descendants matching type SecureTextField
    t =   570.01s         Find: Elements matching predicate '"Password" IN identifiers'
▿ Optional<AnyObject>
  - Some : 0

是否可以在UI测试中使valueForKey上的XCUIElement与NSPredicate一起使用？还有另一种优雅的方法吗？

最佳答案

看来您的谓词略有偏离。尝试将其更改为以下内容:

NSPredicate(format: "hasKeyboardFocus == true"), evaluatedWithObject:element, handler: nil)

创建谓词时，您无需传递valueForKey部分。

关于ios - 有没有办法在UITest中将valueForKey与NSPredicate一起使用？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/39232896/

valueforkey

ios - 有没有办法在UITest中将valueForKey与NSPredicate一起使用？