UI Tests no longer working on Xcode 7.3

Question

I have a set of XCUITests that run with our iOS app. They used to run fine on Xcode 7.2.1, but upgrading to 7.3 causes tests to fail in the "Set Up -> Wait for app to idle" phase with the following error:

UI Testing Failure - Failed to perform AX action for monitoring the animations of <XCUIApplicationProcess: 0x7f82450288c0 [appName here] (25670)>, error: Error -25204 performing AXAction 2043

This failure is seen on every single UI test, both on bots and when running locally.

Has anyone else seen this or have any workarounds?

Nita

I'm experiencing this issue as well – Compatriot

Also having this problem. – Mump

Answer 1

Note to self: Don't have code that crashes your app on purpose while tests are trying to run. D:

Basically there was a call to terminate the app within the launch phase of the app for a certain scheme (in our case, the TEST scheme). Be thorough in checking what the app is doing when it launches for testing, because there might be errant behavior.

Nita

I have this problem, but not this solution. – Mump

Answer 2

In case anyone still has this issue - for me it was activating the Optimizely framework that caused this error. Disabling the framework when running XCUITest solved it for me.

Marga

Any idea specifically what this framework was doing that caused the error? – Inessential