无法在XCTest中从UIStoryboard转换自定义UIViewController

时间:2014-08-16 23:38:17

标签: swift xctest

在Swift,Xcode6-Beta5中,我试图对我的“ViewController”进行单元测试,而不是一个非常有创意的名字。

通过查看其他回复,我认为我没有正确配置“测试”目标。

测试代码失败:

  func testItShouldLoadFromStoryboard() {

    var storyBoard: UIStoryboard?
    var anyVC: AnyObject?
    var viewController: ViewController?
    var uiViewController: UIViewController?

    storyBoard = UIStoryboard(name:"Main", bundle: nil)
    XCTAssert(storyBoard != nil, "Test Not Configured Properly")

    anyVC = storyBoard?.instantiateInitialViewController()
    viewController = anyVC  as? ViewController
    // Failing Assertion 
    XCTAssert(viewController != nil, "Test Not Configured Properly")

    uiViewController = anyVC as? UIViewController
    XCTAssert(uiViewController != nil, "Test Not Configured Properly")

  }

我可以使用以下几行强制演员:

anyVC = storyBoard?.instantiateInitialViewController()
viewController = (anyVC != nil) ? (anyVC  as ViewController) : nil

但这导致了以下崩溃:

libswiftCore.dylib`swift_dynamicCastClassUnconditional:
0x10724f5a0:  pushq  %rbp
0x10724f5a1:  movq   %rsp, %rbp
0x10724f5a4:  pushq  %r14
0x10724f5a6:  pushq  %rbx
0x10724f5a7:  movq   %rsi, %rbx
0x10724f5aa:  movq   %rdi, %r14
0x10724f5ad:  testq  %r14, %r14
0x10724f5b0:  je     0x10724f5de               ; swift_dynamicCastClassUnconditional + 62
0x10724f5b2:  movabsq $-0x7fffffffffffffff, %rax
0x10724f5bc:  andq   %r14, %rax
0x10724f5bf:  jne    0x10724f5de               ; swift_dynamicCastClassUnconditional + 62
0x10724f5c1:  movq   %r14, %rdi
0x10724f5c4:  callq  0x107279a6e               ; symbol stub for: object_getClass
0x10724f5c9:  nopl   (%rax)
0x10724f5d0:  cmpq   %rbx, %rax
0x10724f5d3:  je     0x10724f5ed               ; swift_dynamicCastClassUnconditional + 77
0x10724f5d5:  movq   0x8(%rax), %rax
0x10724f5d9:  testq  %rax, %rax
0x10724f5dc:  jne    0x10724f5d0               ; swift_dynamicCastClassUnconditional + 48
0x10724f5de:  leaq   0x3364d(%rip), %rax       ; "Swift dynamic cast failed"
0x10724f5e5:  movq   %rax, 0xa456c(%rip)       ; gCRAnnotations + 8
0x10724f5ec:  int3   
0x10724f5ed:  movq   %r14, %rax
0x10724f5f0:  popq   %rbx
0x10724f5f1:  popq   %r14
0x10724f5f3:  popq   %rbp
0x10724f5f4:  retq   
0x10724f5f5:  nopw   %cs:(%rax,%rax)

我还成功地直接实例化了ViewController,但是没有进行IBOutlet处理,这是我测试的目的之一,以确保我不会通过重命名来删除链接,删除连接中的连接故事板编辑器,或者我发现的许多其他方式来破坏事物......

编辑---- 我从一个新项目开始,选择iOS应用程序 - >单一视图应用程序模板。

将testExample替换为如下所示的代码,将ViewController添加到测试目标。类似的结果。此模板具有ViewController类型的单个视图控制器,故事板中没有其他内容。

  func testExample() {


      var storyBoard: UIStoryboard?
      var anyVC: AnyObject?
      var viewController: ViewController?

      storyBoard = UIStoryboard(name:"Main", bundle: nil)
      XCTAssert(storyBoard != nil, "Test Not Configured Properly")

      anyVC = storyBoard?.instantiateInitialViewController()
      viewController = anyVC as? ViewController
      XCTAssert(viewController != nil, "Test Not Configured Properly")

      // This is an example of a functional test case.
      XCTAssert(true, "Pass")

    }

在设置anyVC的值之后的断点处输出以下lldb:

(lldb) po anyVC
(instance_type = Builtin.RawPointer = 0x00007fe22c92a290 -> 0x000000010e20bd80 (void *)0x000000010e20bea0: OBJC_METACLASS_$__TtC22TestingViewControllers14ViewController)
 {
  instance_type = 0x00007fe22c92a290 -> 0x000000010e20bd80 (void *)0x000000010e20bea0: OBJC_METACLASS_$__TtC22TestingViewControllers14ViewController
} 

3 个答案:

答案 0 :(得分:14)

我提出了一个更好的解决方案,而不是公开一切。实际上你只需要使用来自测试包的故事板而不是使用nil(强制它来自主要目标的捆绑包)。

var storyboard: UIStoryboard = UIStoryboard(name: "Main", bundle: NSBundle(forClass: self.dynamicType))
vc = storyboard.instantiateViewControllerWithIdentifier("LoginVC") as LoginViewController
vc.loadView()

答案 1 :(得分:0)

感谢@Derrik Hathaway提供解决方案的关键。应用程序和测试目标是不同的模块。

我的应用程序有一个不幸的名称TestingViewControllers为了解决这个问题,我做了以下更改,并在应用程序代码中将ViewController作为public类。

添加此行以测试案例:

import TestingViewControllers

将测试用例更改为:

func testExample() {


  var storyBoard: UIStoryboard?
  var anyVC: AnyObject?
  var viewController: TestingViewControllers.ViewController?

  storyBoard = UIStoryboard(name:"Main", bundle: nil)
  XCTAssert(storyBoard != nil, "Test Not Configured Properly")

  anyVC = storyBoard?.instantiateInitialViewController()
  viewController = anyVC as? TestingViewControllers.ViewController
  XCTAssert(viewController != nil, "Test Not Configured Properly")

  // This is an example of a functional test case.
  XCTAssert(true, "Pass")

}

测试用例传递

答案 2 :(得分:0)

你是否设置了storyboardID,如果你有,你可以像这样投射它。

您还需要将视图控制器类重命名为例如MyAppViewController使主故事板使用它而不是标准的viewcontroller类然后将storyboardID设置为例如MyappVC

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