It sounds like you’re hitting a local network privacy restriction (see my
Local Network Privacy FAQ for more on this). Your
XCTestCase is hosted in a test runner process. This is not a standard application and thus the system is unable to present the local network privacy alert on its behalf, and so the system will fail all your local network requests as if the user denied local network access.
I don’t see an easy way around this. In a unit test you can avoid this issue by hosting the unit test within your app, but that’s tricky for a UI test.
What sort of network access patterns do your tests need? If it’s just a matter of setting things up in advance, you could do that from your Mac prior to running the test. But if it’s an interactive sequence — set up the accessory, run a test, set up the accessory in a different way, run the test, and so on — that won’t work.
Another option might be to run a proxy on the Raspberry Pi and configure your test device to use that proxy.
Regardless, I think you should
file a bug against Xcode’s testing infrastructure. The local network privacy feature was not created to protect users from UI test code (-:
Please post your bug number, just for the record.
Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@apple.com"
