Until Xcode 8/iOS 10, I was able to access the Keychain from within the unit tests of a static library. After upgrading, I get an error, see stack trace:
failed: caught "NSInternalInconsistencyException", "Couldn't add the Keychain Item."
(
0 CoreFoundation 0x000000010b2a734b __exceptionPreprocess + 171
1 libobjc.A.dylib 0x000000010ad0821e objc_exception_throw + 48
2 CoreFoundation 0x000000010b2ab442 +[NSException raise:format:arguments:] + 98
3 Foundation 0x000000010a89eedd -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 195
4 MyLibTests 0x0000000117366dea -[KeychainItemWrapper writeToKeychain] + 970
5 MyLibTests 0x000000011736614a -[KeychainItemWrapper setObject:forKey:] + 218
6 MyLibTests 0x000000011736a794 -[MyUserManager(Credentials) save] + 196
7 PawPointsLibTests 0x0000000116ef5490 -[MyLibTest tearDown] + 256
8 XCTest 0x000000010a6e0547 __24-[XCTestCase invokeTest]_block_invoke_2 + 1304
9 XCTest 0x000000010a7189d4 -[XCTestContext performInScope:] + 190
10 XCTest 0x000000010a6e001c -[XCTestCase invokeTest] + 255
11 XCTest 0x000000010a6e0835 -[XCTestCase performTest:] + 457
12 XCTest 0x000000010a6dd8fd -[XCTestSuite performTest:] + 491
13 XCTest 0x000000010a6dd8fd -[XCTestSuite performTest:] + 491
14 XCTest 0x000000010a6dd8fd -[XCTestSuite performTest:] + 491
15 XCTest 0x000000010a6c9b0c __25-[XCTestDriver _runSuite]_block_invoke + 51
16 XCTest 0x000000010a6eafc3 -[XCTestObservationCenter _observeTestExecutionForBlock:] + 602
17 XCTest 0x000000010a6c99a9 -[XCTestDriver _runSuite] + 436
18 XCTest 0x000000010a6ca7a2 -[XCTestDriver _checkForTestManager] + 287
19 XCTest 0x000000010a719f5c _XCTestMain + 628
20 xctest 0x000000010a64c922 xctest + 6434
21 libdyld.dylib 0x000000010e01368d start + 1
22 ??? 0x0000000000000005 0x0 + 5
Any ideas how to make this work again. At the app level, enabling keychain sharing and adding entitlements took care of it, but that won't help me b/c I need to be able to test the library independently before shipping, since the app development is done by a different team. I am using Apple's old example for how to add to keychain, but have tried other libraries, all with the same result.