c# - 发生异常时如何测试用户是否被重定向到错误页面？

问题描述

我正在尝试编写一个单元测试来测试我的控制器的一个操作ShareWorkbook。Startup.cs如果上述操作发生异常，测试应检查用户是否被发送到通用错误页面（定义在中）。但是，目前，由于我的硬编码异常，我的单元测试失败了。我知道我的测试检查用户是否被重定向到错误页面，但该异常会破坏单元测试（请参阅下面的异常）有没有办法解决这个问题，以便忽略异常并通过测试？

那是我的HomeController与我要测试的操作：

public class HomeController : Controller
{
...

[HttpPost]
[ValidateAntiForgeryToken]
public IActionResult ShareWorkbook(string emails, string title, string workbookId)
    {
        var emailStrArr = Regex.Split(emails, Constants.SplitPattern).ToList();

        var workbookShareModel = new WorkbookShareModel
        {
            WorkbookId = workbookId,
            Title = title,
            Emails = emailStrArr
        };

        // check to see if the 'WorkbookShareModel' is valid (takes into account its property DataAnnotation)
        if (TryValidateModel(workbookShareModel))
        {
            try
            {
                ShareWorkbook(workbookShareModel);
            }
            catch (Exception e)
            {
                _logger.LogException(e, e.Message);
                throw;
            }
        }

        // return no content to avoid page refresh
        return NoContent();
    }

    private void ShareWorkbook(WorkbookShareModel workbookShareModel)
    {
       // MOCK SERVICE
        _workbookManagementService.ShareWorkbook(workbookShareModel);
    }
}

目前，我有一个硬编码的异常，我已经添加到我的MockService：

public class MockManagementService : IManagementService
{
    public void ShareWorkbook(WorkbookShareModel sharedWorkbook)
    {
        if (string.IsNullOrEmpty(sharedWorkbook.WorkbookId))
            throw new Exception("Couldn't share workbook");
    }
}

我得到的异常（预期）：

System.Exception : Couldn't share workbook
   at Project.Test.Services.MockManagementService.ShareWorkbook(WorkbookShareModel sharedWorkbook) in D:\_JustCodeHere\Apps\ProjectCore\ProjectCore.Test\Services\MockManagementService.cs:line 27

那是我的单元测试：

public class HomeControllerTest
{
    [Fact]
    public void error_page_is_shown_if_exception_occurs_during_workbook_sharing_process()
    {
        // Arrange
        var workbookService = new MockManagementService();
        var mockLogger = new Mock<ILogger>();
        var controller = new HomeController(null, null, workbookService, mockLogger.Object);
        controller.ObjectValidator = new TestingObjectValidator();

        // Act
        // passing 'null' for the workbookId parameter raises an exception
        var result = controller.ShareWorkbook("test@email.com", "workbook title", null);

        // Assert
        var redirectToActionResult = Assert.IsType<RedirectToActionResult>(result);
        Assert.Equal("Error", redirectToActionResult.ActionName);
    }
}

这就是我设置错误页面的方式：

public class Startup
{
    ...
    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {

    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    else
    {
        app.UseExceptionHandler("/Home/Error");
    }

    ...
    }
}

标签： c#unit-testingasp.net-corexunit

我最终将throw;控制器操作中的调用替换为return RedirectToAction("Error");. 这使我可以单元测试用户是否被重定向到正确的页面，如下所示：

public void error_page_is_shown_if_exception_occurs_during_workbook_sharing_process()
{
    // Arrange
    var emails = "test@email.com";
    var title = "";

    // Act
    // passing 'null' for the workbookId parameter raises an exception
    var result = _controller.ShareWorkbook(emails, title, null);

    // Assert
    var redirectToActionResult = Assert.IsType<RedirectToActionResult>(result);
    Assert.Equal("Error", redirectToActionResult.ActionName);
}

c# - 发生异常时如何测试用户是否被重定向到错误页面？

问题描述

解决方案

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