Adds setUp and tearDown to the XCTestCase protocol.
Adds setUp and tearDown to the XCTestCase protocol.
apple/swift-corelibs-xctest,apple/swift-corelibs-xctest,tiagomartinho/swift-corelibs-xctest,tiagomartinho/swift-corelibs-xctest,yoonapps/swift-corelibs-xctest,yoonapps/swift-corelibs-xctest