对于我正在进行的项目,我正在SpecFlow 1.9.2中实现一些功能测试。
我遇到这些测试的问题是,在尝试将ActionResult强制转换为ViewResult时,我得到一个Null Reference异常。然而,这个问题存在的原因是因为在我们的控制器中,我们有两个代码路径,如:
public class CurrentController : Controller
{
[HttpPost]
public ActionResult SomeAction(MyModel model)
{
if(ModelState.IsValid)
{
model.Save();
return RedirectToAction("SomeOtherAction", "Current");
}
// Views will be omitted as they're irrelevant to my question.
return View(model);
}
[HttpGet]
public ActionResult SomeOtherAction()
{
SomeModel model = new SomeModel();
return View(model);
}
}
...在我的功能测试中,我有一个步骤来调用HTTP帖子:
public class MyFeatureTest
{
private ActionResult _actionResult;
private ViewResult _viewResult;
private MyModel _myModel;
private SomeModel _someModel;
// SNIP: Other steps unnecessary to this problem description...
[When(@"I click save on the first action")]
public void WhenIClickSaveOnTheFirstAction()
{
_actionResult = _currentController.SomeAction(_myModel);
_viewResult = _actionResult as ViewResult; // Evaluates to null
_someModel = _viewResult.ViewData.Model as SomeModel;
}
}
尝试分配_someModel
时,抛出NullReference异常。
要尝试规避此问题,我尝试将HTTP帖子中的RedirectToAction
电话更改为SomeOtherAction
上的直接电话,但这会导致网站错误。
问题:如上所述,我的问题的核心是RedirectToRouteResult不是ViewResult。在功能测试的上下文中,有什么方法可以解析RedirectToRouteResult以使控制器生成适当的ViewResult?
答案 0 :(得分:2)
默认情况下,ModelState.IsValid
将返回true,这会导致RedirectToRouteResult而不是继续并返回ViewResult。
您可以尝试调用_currentController.ModelState.AddModelError()
强制ModelState.IsValid
返回false。