我有两个调用控制器的测试方法：
这个通过了：
[Test]
public void EditAction_Should_Redirect_When_Update_Successful()
{
// Arrange
var controller = CreatePaperControllerAs("SomeUser");
const int id = 2;
FormCollection formValues = new FormCollection() {
{ "IM_Paper.Title", "Another value" },
{ "IM_Paper.Abstract", "Another description" }
};
controller.ValueProvider = formValues.ToValueProvider();
// Act
var result = controller.Edit(id, formValues) as RedirectToRouteResult;
// Assert
Assert.AreEqual("Details", result.RouteValues["Action"]);
Assert.AreEqual(id, result.RouteValues["id"]);
}
这个失败了：
[Test]
public void EditAction_Should_Redisplay_With_Errors_When_Update_Fails()
{
// Arrange
var controller = CreatePaperControllerAs("SomeUser");
int id = 1;
FormCollection formValues = new FormCollection() {
{ "IM_Paper.Year","xxx"}
};
controller.ValueProvider = formValues.ToValueProvider();
// Act
var result = controller.Edit(id, formValues) as ViewResult;
// Assert
Assert.IsNotNull(result, "Expected redisplay of view");
Assert.IsTrue(result.ViewData.ModelState.IsValid, "Expected Errors");
}
控制器中的动作结果是
[HttpPost, Authorize]
public ActionResult Edit(int id, FormCollection collection)
{
IM_Paper paper = _paperRepository.GetPaperById(id);
if (!paper.IsPostedByUser(User.Identity.Name))
return View("InvalidOwner");
try
{
UpdateModel(paper, "IM_Paper" );
_paperRepository.Save();
return RedirectToAction("Details", new { id = paper.PaperId });
}
catch
{
return View(paper);
}
}
但是，try-catch 块永远不会捕获异常（“IM_Paper.Year”应该是一个 int）。所以控制器总是将 Action 结果作为 RedirectToAction 返回。即使是第一个，内存中的数据也没有改变。
你知道为什么会这样吗？对于“IM_Paper”类，我使用 POCO 生成器并从实体框架生成。该类如下所示：
public partial class IM_Paper
{
#region Primitive Properties
public virtual int PaperId
{get;set;}
public virtual string Author
{get;set;}
public virtual Nullable<int> Year
{get;set;
} ...