NUnit - ExpectedMessage 不同错误

发布于 2024-09-05 06:42:29 字数 605 浏览 11 评论 0原文

我对 TDD 很陌生，并且正在使用 NUnit 和 Moq。我有一个预计会出现异常的方法，因此我想尝试一下框架功能。

我的测试代码如下所示：

    [Test]
    [ExpectedException(ExpectedException = typeof(MockException), ExpectedMessage = "Actual differs from expected")]
    public void Write_MessageLogWithCategoryInfoFail()
    {
        string message = "Info Test Message";

        Write_MessageLogWithCategory(message, "Info");

        _LogTest.Verify(writeMessage =>
            writeMessage.Info("This should fail"),
            "Actual differs from expected"
        );
    }

但我总是收到错误消息，指出实际异常消息与预期消息不同的错误消息。我做错了什么？

原文

I am quite new to TDD and am going with NUnit and Moq. I have got a method where I expect an exception, so I wanted to play a little with the frameworks features.

My test code looks as follows:

    [Test]
    [ExpectedException(ExpectedException = typeof(MockException), ExpectedMessage = "Actual differs from expected")]
    public void Write_MessageLogWithCategoryInfoFail()
    {
        string message = "Info Test Message";

        Write_MessageLogWithCategory(message, "Info");

        _LogTest.Verify(writeMessage =>
            writeMessage.Info("This should fail"),
            "Actual differs from expected"
        );
    }

But I always receive the errormessage that the error message that the actual exception message differs from the expected message. What am I doing wrong?

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情绪失控 2024-09-12 06:42:29

不幸的是，Resharper 测试运行程序有一个错误/限制 - 它不处理 ExpectedException 属性。您有 2 个选择：

使用其他测试运行程序（例如 nunit-gui.exe，随 NUnit 一起提供） - 但这种方法使调试测试变得很痛苦

使用以下模式手动捕获并验证异常：

[测试]
公共无效Write_MessageLogWithCategoryInfoFail（）
{
尝试
{
string message = "信息测试消息";

 Write_MessageLogWithCategory(message, "Info");

  _LogTest.Verify(writeMessage =>;
      writeMessage.Info("这应该失败"),
      “实际情况与预期不同”
  ）；
  Assert.Fail("预期异常");
}
捕获（MockException e）
{
  Assert.AreEqual("实际与预期不同", e.Message);
}

}

真是太遗憾了，因为用描述性的方式来表达你期待一个异常要好得多！

附带说明一下，我希望上面的代码仅用于使用框架 - 通常你永远不会捕获 MockExceptions :)

Unfortunately Resharper test runner has a bug/limitation - it doesn't handle the ExpectedException attributes. You have 2 options:

Use some other test runner (e.g. nunit-gui.exe, shipped with NUnit) - but this approach makes it a pain to debug your tests

Catch and validate the exception manually, using the following pattern:

[Test]
public void Write_MessageLogWithCategoryInfoFail()
{
try
{
string message = "Info Test Message";

  Write_MessageLogWithCategory(message, "Info");

  _LogTest.Verify(writeMessage =>
      writeMessage.Info("This should fail"),
      "Actual differs from expected"
  );
  Assert.Fail("Expected exception");
}
catch(MockException e)
{
  Assert.AreEqual("Actual differs from expected", e.Message);
}

}

Its a real shame, because the descriptive way of saying that you expect an exception is much nicer!

On a side note I hope that the code above is only for playing with the framework - usually you would never catch MockExceptions :)

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