自从升级(不确定是否相关)到Xcode8和使用ios10模拟器后,我已经为我的app...However创建了一个XCUItesting测试套件。我的测试用例只能在ios9中运行,而不能在10中运行。
有没有人也经历过这种情况?或者有人知道我哪里错了吗?
非常感谢
发布于 2017-04-01 03:11:48
根本原因
我也遇到过同样的问题。测试失败了,出现了同样的错误,但根本原因是应用程序崩溃了。我设置了一个异常断点,并打印出回溯以查看位置。
最后,它是由uitableviewdelegate
的一个方法签名中的隐式解包optional引起的崩溃:
public func tableView(_ tableView: UITableView, canPerformAction action: Selector, forRowAt indexPath: IndexPath, withSender sender: Any?) -> Bool
在indexPath
参数为nil
的UI测试期间,系统调用了此方法,从而导致应用程序挂起。
回溯显示如下:
(lldb) thread backtrace
* thread #1: tid = 0x128eaa, 0x000000010c776c3a libswiftFoundation.dylib`static Foundation.IndexPath._unconditionallyBridgeFromObjectiveC (Swift.Optional<__ObjC.NSIndexPath>) -> Foundation.IndexPath + 42, queue = 'com.apple.main-thread', stop reason = EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
* frame #0: 0x000000010c776c3a libswiftFoundation.dylib`static Foundation.IndexPath._unconditionallyBridgeFromObjectiveC (Swift.Optional<__ObjC.NSIndexPath>) -> Foundation.IndexPath + 42
frame #1: 0x0000000108443241 Static`@objc DataSource.tableView(UITableView, canPerformAction : Selector, forRowAt : IndexPath, withSender : Any?) -> Bool + 97 at DataSource.swift:0
frame #2: 0x00000001095aea31 UIKit`-[UITableView _canPerformAction:forCell:sender:] + 169
frame #3: 0x00000001098017c6 UIKit`-[UITableViewCell canPerformAction:withSender:] + 86
frame #4: 0x00000001210a5fc9 UIKit`-[UIResponder(UITextAccessibilityUtilities) _accessibilityHasTextOperations] + 100
frame #5: 0x000000012107bb7c UIKit`-[UITableViewCellAccessibilityElement _accessibilityHasTextOperations] + 48
frame #6: 0x00000001211f09ec UIAccessibility`-[NSObject(AXPrivCategory) accessibilityAttributeValue:] + 5945
frame #7: 0x000000012120bc04 UIAccessibility`_accessibilityAttributesForObject + 767
frame #8: 0x000000012120b5e8 UIAccessibility`-[NSObject(UIAccessibilityAutomation) _accessibilityUserTestingSnapshotDescendantsWithAttributes:maxDepth:maxChildren:maxArrayCount:] + 1736
frame #9: 0x000000012120cf96 UIAccessibility`-[NSObject(UIAccessibilityAutomation) _accessibilityUserTestingSnapshotWithOptions:] + 557
frame #10: 0x00000001211eec0a UIAccessibility`-[NSObject(AXPrivCategory) accessibilityAttributeValue:forParameter:] + 7903
frame #11: 0x00000001211d8856 UIAccessibility`_copyParameterizedAttributeValueCallback + 211
frame #12: 0x0000000120869532 AXRuntime`_AXXMIGCopyParameterizedAttributeValue + 216
frame #13: 0x0000000120863f1c AXRuntime`_XCopyParameterizedAttributeValue + 440
frame #14: 0x0000000120872de5 AXRuntime`mshMIGPerform + 266
frame #15: 0x00000001064e93d9 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 41
frame #16: 0x00000001064e9351 CoreFoundation`__CFRunLoopDoSource1 + 465
frame #17: 0x00000001064e1435 CoreFoundation`__CFRunLoopRun + 2389
frame #18: 0x00000001064e0884 CoreFoundation`CFRunLoopRunSpecific + 420
frame #19: 0x000000010e5bda6f GraphicsServices`GSEventRunModal + 161
frame #20: 0x000000010943dc68 UIKit`UIApplicationMain + 159
frame #21: 0x000000010462c95f GoOut`main + 111 at AppDelegate.swift:47
frame #22: 0x000000010cb7e68d libdyld.dylib`start + 1
frame #23: 0x000000010cb7e68d libdyld.dylib`start + 1
解决方案
在知道是哪种方法导致了这种情况之后,修复方法非常简单--只需将indexPath
类型替换为可选的IndexPath?
(添加问号):
public func tableView(_ tableView: UITableView, canPerformAction action: Selector, forRowAt indexPath: IndexPath?, withSender sender: Any?) -> Bool
然后使用nil
正确地调用该方法,并且不会导致崩溃。
有关更多信息,请参阅:https://openradar.appspot.com/31375101,请随时欺骗雷达。
发布于 2016-12-22 01:37:07
你使用的是swift 2还是swift 3。我在使用.hittable
(swift 2)或.isHittable
(swift 3)检查时似乎经常遇到这个错误。看看删除命中表检查是否有帮助。除了内置的hittable检查之外,还有其他选项。
https://stackoverflow.com/questions/40870055
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