单元测试状态代码不在 HttpStatusCode 枚举中的 ApiController 方法

Question

我有一个看起来像这样的 ApiController 方法...

    [HttpPost]
    public IHttpActionResult Post([FromBody] GloballyEnumeratedMessage gem)
    {
        var result = _gemPublisher.PublishGem(gem);

        if (result.Success)
        {
            return Ok();
        }

        return new StatusCodeResult((HttpStatusCode)422, this);
    }

我检查Ok结果的测试如下。

    [TestMethod]
    public void Post_ValidGem_Returns200()
    {
        _gemPublisherMock.Setup(v => v.PublishGem(It.IsAny<GloballyEnumeratedMessage>())).Returns(ResultStatus.FromSuccess());

        var controller = new PublishGemController(_gemPublisherMock.Object);

        // Act
        IHttpActionResult actionResult = controller.Post(It.IsAny<GloballyEnumeratedMessage>());

        // Assert
        Assert.IsInstanceOfType(actionResult, typeof(OkResult));
    }

在我 returning 422 之前，我 returning BadRequest 测试看起来像这样：

    [TestMethod]
    public void Post_InvalidGem_Returns400()
    {
        _gemPublisherMock.Setup(v => v.PublishGem(It.IsAny<GloballyEnumeratedMessage>())).Returns(ResultStatus.FromFailure());

        var controller = new PublishGemController(_gemPublisherMock.Object);

        // Act
        IHttpActionResult actionResult = controller.Post(It.IsAny<GloballyEnumeratedMessage>());

        // Assert
        Assert.IsInstanceOfType(actionResult, typeof(BadRequestResult));
    }

我想为另一个潜在的失败保留 BadRequest，因此决定在发布失败时将 Post 方法更改为 return 422。我检查 422 状态代码的测试是什么样的？

编辑：根据对问题的评论解决

[TestMethod]
public void Post_InvalidGem_Returns422()
{
    _gemPublisherMock.Setup(v => v.PublishGem(It.IsAny<GloballyEnumeratedMessage>())).Returns(ResultStatus.FromFailure());

    var controller = new PublishGemController(_gemPublisherMock.Object);

    // Act
    IHttpActionResult actionResult = controller.Post(It.IsAny<GloballyEnumeratedMessage>());
    var result = (StatusCodeResult) actionResult;

    // Assert
    Assert.IsInstanceOfType(actionResult, typeof(StatusCodeResult));
    Assert.AreEqual(422, (int)result.StatusCode);
}

Answer 1

下面的控制器和测试做我相信你想要完成的事情：

控制器：

public class MyTestController : ApiController
{
    [HttpPost]
    public IHttpActionResult Post([FromBody] object gem)
    {
        return new StatusCodeResult((HttpStatusCode)422, this);
    }
}

测试：

    [TestMethod]
    public void Post_Returns422()
    {
        var controller = new MyTestController();

        // Act
        IHttpActionResult actionResult = controller.Post(It.IsAny<object>());

        // Assert
        Assert.IsInstanceOfType(actionResult, typeof(StatusCodeResult));
        Assert.AreEqual((int)((StatusCodeResult)actionResult).StatusCode,422);
    }

单元测试状态代码不在 HttpStatusCode 枚举中的 ApiController 方法

Unit testing ApiController methods with status codes not in HttpStatusCode enum

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