英文:
Cannot set location of an XCUIDevice to nil
问题
我的UI测试要求CLLocationManager实例的location属性最初为nil。
因此，在UI测试的方案中，运行选项将默认位置设置为none。
UI测试使用：
class IPhone_UITestCase: XCTestCase {
//…
let device = XCUIDevice.shared
//…
override func setUp() {
super.setUp()
device.location = nil
//…
myApp.launch()
//…
}
}
而应用程序使用一个单例：
final class LocationManager: CLLocationManager {
static let shared = LocationManager()
//…
}
我期望在我的应用程序启动后，LocationManager.shared.location == nil。
然而，应用程序以location != nil启动。
可能的原因是什么？
编辑：
当在将模拟设备位置设置为nil后在UI测试中停在断点时，有以下情况：
Xcode控制台显示UI测试应用程序为Resetting the simulated location，这是预期的。
但是对于应用程序，Xcode控制台显示CLLocationManager在其代理中调用了locationManager(_:didFailWithError:)，错误为The operation couldn’t be completed. (kCLErrorDomain error 0.)，并且模拟设备位置未重置。
英文:
My UI tests require that property location of a CLLocationManager instance is initially nil.
Thus, in the scheme for the UI tests, the run options set the default location to none.
The UI tests use
class IPhone_UITestCase: XCTestCase {
//…
let device = XCUIDevice.shared
//…
override func setUp() {
super.setUp()
device.location = nil
//…
myApp.launch()
//…
}
and the app uses a singleton
final class LocationManager: CLLocationManager {
static let shared = LocationManager()
//…
}
I expected that in my app after launch, LocationManager.shared.location == nil.
However, the app is launched with location != nil.
What could be the reason?
EDIT:
When the UI test is stopped at a breakpoint after setting the simulated device location to nil, one has the following situation:
The Xcode console shows for the UI test app Resetting the simulated location, as expected.
But for the app, the Xcode console shows that the CLLocationManager did call locationManager(_:didFailWithError:) in its delegate, with the error The operation couldn’t be completed. (kCLErrorDomain error 0.) and the simulated device location was not reset.
答案1
得分: 0
我联系了苹果（TSI）并得到了答案
>...我们认为您的问题在Xcode文档中已经得到了回答
>链接如下：
>构建单元测试的位置
>https://developer.apple.com/documentation/xcode/simulating-location-in-tests#Construct-locations-for-unit-tests
文档表示：
>...通过将共享的XCUIDevice位置设置为XCUILocation的实例来更新模拟设备位置。
显然，这需要解释为不允许（即使可能）将location属性设置为nil，因为nil不是XCUILocation的实例。
英文:
I contacted Apple (TSI) and got the answer
> … we believe your question is answered by the Xcode documentation
> linked here:
>
Construct locations for unit tests
> https://developer.apple.com/documentation/xcode/simulating-location-in-tests#Construct-locations-for-unit-tests
The docu says:
> ... update the simulated device location by setting the shared
> XCUIDevice location to an instance of XCUILocation.
Apparently this has to be interpreted that it is not allowed (even if possible) to set the location property to nil, since nil is not an XCUILocation.
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