[英]MVC Moq Unit Test Void Method
我有一个程序的表单发布,我想用 Moq 进行单元测试。 我有用于单元测试的工作代码 Get WebApi 方法很好用,但我不确定如何在 MVC 控制器中为 void 方法写一篇文章。
我想测试 ModelState.IsValid 并且如果无效则返回异常。
控制器
public class HomeController : Controller
{
private IEditDataRepository _editDataRepository;
public HomeController()
{
//Default Constructor
}
//Dependency Injection using Unity.MVC5 NuGet Package
public HomeController(IEditDataRepository editDataRepository)
{
_editDataRepository = editDataRepository;
}
[HttpPost]
[ValidateAntiForgeryToken]
public void Edit([Bind(Include = "Field1,Field2")] FormViewModel model)
{
if (ModelState.IsValid)
{
_editDataRepository.Edit(model);
}
else
{
throw new HttpException(400, "ModelState Invalid");
}
}
}
存储库
public class EditDataRepository : IEditDataRepository, IDisposable
{
private DBEntities db = new DBEntities();
public void Edit(FormViewModel model)
{
db.MyProcedure(model.Field1,model.Field2);
}
private bool disposed = false;
protected virtual void Dispose(bool disposing)
{
if (!this.disposed)
{
if (disposing)
{
db.Dispose();
}
}
this.disposed = true;
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
}
单元测试
我可以在这里做一些设置,但在那之后我不确定。 如何检查 ModelState.IsValid 和无效(返回异常)?
[TestMethod]
public void TestSomething()
{
//Arrange
var mockRepository1 = new Mock<IEditDataRepository>();
mockRepository1
.Setup(x => x.Edit(It.IsAny<FormViewModel>()));
HomeController controller = new HomeController(mockRepository1.Object);
//Act
controller.Edit(It.IsAny<FormViewModel>());
//Assert
}
[TestMethod]
public void TestSomething()
{
//Arrange
var mockRepository1 = new Mock<IEditDataRepository>();
mockRepository1
.Setup(x => x.Edit(It.IsAny<FormViewModel>()));
HomeController controller = new HomeController(mockRepository1.Object);
controller.ModelState.AddModelError("error", "invalid model");
//Act/Assert
var ex = Assert.Throws<HttpException>(() => controller.Edit(It.IsAny<UTCFormViewModel>()));
Assert.Equal(400, ex.ErrorCode);
}
另外,我建议您不要在您的存储库上实现 Dispose/Finalize 模式。 除非它确实是非托管资源,但情况似乎并非如此。 此 msdn 链接有更多详细信息。
我想我会分享我的路线。 我决定不返回 void 并决定返回一个 HttpStatusCode 。 我已经熟悉如何测试它。
控制器
public class HomeController : Controller
{
private IEditDataRepository _editDataRepository;
//Dependency Injection using Unity.MVC5 NyGet Packages
public HomeController(IEditDataRepository editDataRepository)
{
_editDataRepository = editDataRepository;
}
// GET:
public ActionResult Index()
{
return View();
}
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Edit([Bind(Include = "Field1,Field2")] FormViewModel model)
{
if (ModelState.IsValid)
{
_editDataRepository.Edit(model);
return new HttpStatusCodeResult(HttpStatusCode.OK);
}
else
{
throw new HttpException(400, "ModelState Invalid");
}
}
}
存储库
public class EditDataRepository : IEditDataRepository, IDisposable
{
private DBEntities db = new DBEntities();
public void Edit(FormViewModel model)
{
db.MyProcedure(model.Field1,model.Field2);
}
private bool disposed = false;
protected virtual void Dispose(bool disposing)
{
if (!this.disposed)
{
if (disposing)
{
db.Dispose();
}
}
this.disposed = true;
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
}
单元测试
[TestClass]
public class HomeControllerTests
{
/// <summary>
/// Tests the Edit method is run
/// </summary>
[TestMethod]
public void Edit_Method_Is_Run()
{
//Arrange
var mockRepository = new Mock<IEditDataRepository>();
mockRepository
.Setup(x => x.Edit(It.IsAny<FormViewModel>()));
HomeController controller = new HomeController(mockRepository.Object);
//Act
controller.Edit(It.IsAny<FormViewModel>());
//Assert
mockRepository.VerifyAll();
}
[TestMethod]
public void Edit_Returns_OK()
{
//Arrange
var mockRepository = new Mock<IEditDataRepository>();
mockRepository
.Setup(x => x.Edit(It.IsAny<FormViewModel>()));
HomeController controller = new HomeController(mockRepository.Object);
//Act
var response = controller.Edit(It.IsAny<FormViewModel>());
//Assert
Assert.IsInstanceOfType(response, typeof(HttpStatusCodeResult));
var httpResult = response as HttpStatusCodeResult;
Assert.AreEqual(200, httpResult.StatusCode);
}
/// <summary>
/// Tests the Edit method throws exception
/// </summary>
[TestMethod]
[ExpectedException(typeof(HttpResponseException))]
public void Edit_Returns_Exception()
{
var mockRepository = new Mock<IEditDataRepository>();
mockRepository
.Setup(x => x.Edit(It.IsAny<FormViewModel>()))
.Throws(new HttpResponseException(new HttpResponseMessage(HttpStatusCode.BadRequest)));
HomeController controller = new HomeController(mockRepository.Object);
//Act
var response = controller.Edit(It.IsAny<FormViewModel>());
//Assert
Assert.IsInstanceOfType(response, typeof(HttpResponseException));
}
}
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