我现在正在使用Xcode进行UITesting，但遇到了这个错误。*Assertionfailureinvoid_XCTFailInCurrentTest(NSString*,...)(),/Library/Caches/com.apple.xbs/Sources/XCTest_Sim/XCTest-10112/XCTestFramework/Classes/XCTestCase.m:632016-05-1322:31:54.961XCTRunner[15428:168507]*Terminatingappduetouncaughtexception'NSInternalInconsi