我目前正在进行单元测试,当发送无效的表单集合数据时会引发错误。
异常是在 HttpPost Index ActionResult 方法中抛出的,如下所示:
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Index(FormCollection formCollection, PaymentType payType, string progCode)
{
ActionResult ar = redirectFromButtonData(formCollection, payType, progCode);
if (ar != null)
{
return ar;
}
else
{
throw new Exception("Cannot redirect to payment form from cohort decision - Type:[" + payType.ToString() + "] Prog:[" + Microsoft.Security.Application.Encoder.HtmlEncode(progCode) + "]");
}
}
到目前为止,我已经编写了一个成功命中异常的测试(我已经通过启用代码覆盖验证了这一点,我一直在使用它来查看每个单独测试正在执行的代码)但目前测试失败,因为我没有尚未定义一种测试是否已抛出异常的方法,可以在下面找到此测试的代码:
[TestMethod]
public void Error_Is_Thrown_If_HVM_FormCollection_Data_Is_Incorrect()
{
var formCollection = new FormCollection();
formCollection.Add("__RequestVerificationToken", "__RequestVerificationToken");
formCollection.Add("invalid - invalid", "invalid- invalid");
var payType = new PaymentType();
payType = PaymentType.deposit;
var progCode = "hvm";
var mocks = new MockRepository();
var httpRequest = mocks.DynamicMock<HttpRequestBase>();
var httpContext = mocks.DynamicMock<HttpContextBase>();
controller.ControllerContext = new ControllerContext(httpContext, new RouteData(), controller);
mocks.ReplayAll();
httpRequest.Expect(r => r.Url).Return(new Uri("http://localhost:8080/hvm/full/self/")).Repeat.Any();
httpContext.Expect(c => c.Request).Return(httpRequest).Repeat.Any();
var result = controller.Index(formCollection, payType, progCode);
}
我研究过使用 [ExpectedException(typeof(Exception)]
注释可以在这种情况下使用吗?
最佳答案
我冒昧地更改了您的测试代码,稍微符合 rhino-mocks 的最新功能。不再需要创建 MockRepository
, 你可以使用静态类 MockRepository
并调用GenerateMock<>
.我还移动了您的 SuT(被测系统)实例低于您模拟的规范。
Nunit 示例(与 MSTest 相比,我对 Nunit 的体验更好。主要是因为 Nunit 发布更频繁并且具有更可靠的功能集。同样,不确定它是否适用于 TFS,但这应该不难发现) .
[Test] // Nunit
[ExpectedException(typeof(Exception)) // NOTE: it's wise to throw specific
// exceptions so that you prevent false-positives! (another "exception"
// might make the test pass while it's a completely different scenario)
public void Error_Is_Thrown_If_HVM_FormCollection_Data_Is_Incorrect()
{
var formCollection = new FormCollection();
formCollection.Add("__RequestVerificationToken", "__RequestVerificationToken");
formCollection.Add("invalid - invalid", "invalid- invalid");
var payType = new PaymentType();
payType = PaymentType.deposit;
var progCode = "hvm";
var httpRequest = MockRepository.GenerateMock<HttpRequestBase>();
var httpContext = MockRepository.GenerateMock<HttpContextBase>();
// define behaviour
httpRequest.Expect(r => r.Url).Return(new Uri("http://localhost:8080/hvm/full/self/")).Repeat.Any();
httpContext.Expect(c => c.Request).Return(httpRequest).Repeat.Any();
// instantiate SuT (system under test)
controller.ControllerContext = new ControllerContext(httpContext, new RouteData(), controller);
// Test the stuff, and if nothing is thrown then the test fails
var result = controller.Index(formCollection, payType, progCode);
}
与 MStest 的处理几乎相同,只是您需要更老一点地定义预期的异常。
[TestMethod] // MStest
public void Error_Is_Thrown_If_HVM_FormCollection_Data_Is_Incorrect()
{
try
{
var formCollection = new FormCollection();
formCollection.Add("__RequestVerificationToken", "__RequestVerificationToken");
formCollection.Add("invalid - invalid", "invalid- invalid");
var payType = new PaymentType();
payType = PaymentType.deposit;
var progCode = "hvm";
var httpRequest = MockRepository.GenerateMock<HttpRequestBase>();
var httpContext = MockRepository.GenerateMock<HttpContextBase>();
// define behaviour
httpRequest.Expect(r => r.Url).Return(new Uri("http://localhost:8080/hvm/full/self/")).Repeat.Any();
httpContext.Expect(c => c.Request).Return(httpRequest).Repeat.Any();
// instantiate SuT (system under test)
controller.ControllerContext = new ControllerContext(httpContext, new RouteData(), controller);
// Test the stuff, and if nothing is thrown then the test fails
var result = controller.Index(formCollection, payType, progCode);
}
catch (Exception)
{
Assert.Pass();
}
Assert.Fail("Expected exception Exception, was not thrown");
}
如果您使该部分正常工作,您可以通过提供的链接重构它以提高可重用性:Assert exception from NUnit to MS TEST .
关于c# - 单元测试 Controller 中抛出的异常,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14855980/