DataTestMethod vs TestMethod

[Jonas Nyrup]

I discovered today that [DataRow] can be used with together with [TestMethod], where I had the understanding that [DataTestMethod] was required.

Searching both the source code and docs, I'm a bit confused.

I've find no practical difference between the two attributes in the source code, but the documentation for [DataTestMethod] says that it is intended for data driven tests.
Then the examples for [DataRow] uses [TestMethod].

[jmrnilsson]

This seems accurate. Some MSTest V1 documentation seems to indicate [TestMethod] can be used. But many sources on V2 seems to say that [DataTestMethod] should be used

• https://www.meziantou.net/mstest-v2-data-tests.htm
• https://stackoverflow.com/questions/2367033/mstest-equivalent-for-nunits-parameterized-tests

[Volker Milbrandt]

In this PR of testfx it was reworked and now DataTestMethodAttribute inherits from TestMethodAttribute and doesn't change anything. Should nowadays be the same in usage.

[Christian Rodriguez]

@milbrandt Shouldn't someone update the docs:

https://docs.microsoft.com/en-us/dotnet/core/testing/unit-testing-with-mstest#add-more-features

and then close this issue

[Medeni Baykal]

Thanks for pointing this out. I have a PR to fix this issue.