C#、NUnit：测试 ArgumentException 是否具有正确 ParamName 的清晰方法

发布于 2024-08-17 09:54:22 字数 261 浏览 1 评论 0原文

要测试某些东西是否会抛出ArgumentException，我可以这样做：

Assert.Throws<ArgumentException>(() => dog.BarkAt(deafDog));

How can I check that the ParamName is Correct in a clear way?还有额外的问题：或者您可能会建议根本不测试这个？

原文

To test that something throws for example an ArgumentException I can do this:

Assert.Throws<ArgumentException>(() => dog.BarkAt(deafDog));

How can I check that the ParamName is correct in a clear way? And bonus question: Or would you perhaps perhaps recommend not testing this at all?

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玩套路吗 2024-08-24 09:54:22

找到了一种非常清晰的方法（但如果有人有更好的方法，请告诉我！）

var e = Assert.Throws<ArgumentException>(() => dog.BarkAt(deafDog));
Assert.That(e.ParamName, Is.EqualTo("otherDog"));

Facepalm< /a>...

Found a pretty clear way (but please let me know if anyone have an even better one!)

var e = Assert.Throws<ArgumentException>(() => dog.BarkAt(deafDog));
Assert.That(e.ParamName, Is.EqualTo("otherDog"));

Facepalm...

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家住魔仙堡 2024-08-24 09:54:22

如果您想对异常执行更多操作，而不仅仅是断言抛出该异常，则 Assert.Throws 实际上会返回该异常，您可以执行以下操作：

var exception = Assert.Throws<ArgumentException>(() => dog.BarkAt(deafDog));
// Assert something else about the exception

If you want to do more with the exception than just assert that it is thrown, then Assert.Throws actually returns the exception and you can do this:

var exception = Assert.Throws<ArgumentException>(() => dog.BarkAt(deafDog));
// Assert something else about the exception

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阳光的暖冬 2024-08-24 09:54:22

跳转到12年后的未来->你现在可以这样做（使用 NUnit 3 的流利语法）：

TestDelegate testDelegate = () => dawg.BarkAt(xzibit);

Assert.That(testDelegate, Throws.ArgumentException.With.Property(nameof(ArgumentException.ParamName)).EqualTo("otherDawg"));

Skipping 12 years into the future -> you can now do it like this (using NUnit 3's fluent syntax):

TestDelegate testDelegate = () => dawg.BarkAt(xzibit);

Assert.That(testDelegate, Throws.ArgumentException.With.Property(nameof(ArgumentException.ParamName)).EqualTo("otherDawg"));

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~没有更多了~