-[GTMSessionFetcherServiceTest testThreadingStress] is flaky

[bhamiltoncx]

I ran swift test twice at be65155.

The first time it failed:

Test Case '-[GTMSessionFetcherServiceTest testThreadingStress]' started.
gtm-session-fetcher/UnitTests/GTMSessionFetcherServiceTest.m:852: error: -[GTMSessionFetcherServiceTest testThreadingStress] : ((fetchData) != nil) failed - index 55
gtm-session-fetcher/UnitTests/GTMSessionFetcherServiceTest.m:853: error: -[GTMSessionFetcherServiceTest testThreadingStress] : ((fetchError) == nil) failed: "Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo={_kCFStreamErrorCodeKey=60, NSUnderlyingError=0x600001a6e910 {Error Domain=kCFErrorDomainCFNetwork Code=-1001 "(null)" UserInfo={_NSURLErrorNWPathKey=satisfied (Path is satisfied), interface: lo0, _kCFStreamErrorCodeKey=60, _kCFStreamErrorDomainKey=1}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <E354E876-A4E9-4A2A-93E3-74DE878D7BA3>.<25>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
    "LocalDataTask <E354E876-A4E9-4A2A-93E3-74DE878D7BA3>.<25>"
), NSLocalizedDescription=The request timed out., NSErrorFailingURLStringKey=http://localhost:59841/gettysburgaddress.txt, NSErrorFailingURLKey=http://localhost:59841/gettysburgaddress.txt, _kCFStreamErrorDomainKey=1}" - index 55
Test Case '-[GTMSessionFetcherServiceTest testThreadingStress]' failed (26.597 seconds).

The second time, it passed.

I'm guessing this test is flaky.

[thomasvl]

I saw this once today, but I haven't been able to repo it since. Even running the test in a loop with Xcode, no failures in 100 iterations. 😞