Hi,
I’m seeing an unexpected change in how XCTFail behaves in UI tests after updating Xcode.
I use the following helper method:
`func waitForExistance(file: StaticString, line: UInt) -> Self {
if !(element.exists || element.waitForExistence(timeout: Configuration.current.predicateTimeout)) {
XCTFail("couldn't find element: \(element) after \(Configuration.current.predicateTimeout) seconds",
file: file,
line: line)
return self
} else {
return self
}
}`
In Xcode 16.4, this worked as expected:
– when an element wasn’t found, XCTFail was triggered, but the test continued running, allowing my retry logic to execute.
After updating to Xcode 26.1 / 26.2 - the test now immediately aborts after XCTFail, without executing the next retry.
The logs show:
`t = 113.22s Tear Down
t = 113.22s Terminate com.viessmann.care:81789
*** Assertion failure in -[UITests.Tests _caughtUnhandledDeveloperExceptionPermittingControlFlowInterruptions:caughtInterruptionException:whileExecutingBlock:], XCTestCase+IssueHandling.m:273
Test Case '-[UITests.Tests test_case]' failed (114.323 seconds).
Flushing outgoing messages to the IDE with timeout 600.00s
Received confirmation that IDE processed remaining outgoing messages`
It looks like XCTFail in Xcode 26 is now treated as an unhandled developer exception, which stops the test execution immediately, even when it’s called inside a helper method. This was not the case in earlier versions.
My questions:
Is this a regression in XCTest?
Or an intentional change in how XCTFail behaves in newer Xcode versions?
Should failures now be reported differently (e.g., using record(.init(type: .assertionFailure, …))) if I want to continue the test instead of aborting it?
I would like to restore the previous behavior where the failure is logged without terminating the entire test, so my retry mechanism can still run.
Has anyone else run into this after upgrading?
Thanks in advance!
If you’d like, I can also add recommended workarounds that actually work with Xcode 16.4 (e.g., replacing XCTFail with a non-terminating issue record).
