I have seen in a Microsoft video about Visual Studio update 2 regarding these attributes. However, I can't find any other information about them and can't get a project to build with them.
Does anyone know anything about these attributes or how to get them working?
[DataTestMethod]
[DataRow("a", "b")]
[DataRow(" ", "a")]
public void TestMethod1(string value1, string value2)
{
Assert.AreEqual(value1 + value2, string.Concat(value1, value2));
}
There is a good walkthrough originally published at https://blogs.msmvps.com/bsonnino/2017/03/18/parametrized-tests-with-ms-test (link is now to archive by wayback machine).
In a nutshell, you will need to install MSTest.TestFramework and MSTest.TestAdapter, and remove references to Microsoft.VisualStudio.QualityTools.UnitTestFramework. You can then indicate a parameterised test with the [DataTestMethod] attribute, and can add your parameters using the [DataRow] attribute, as per your example. The values from the [DataRow] attribute will be passed to the test method in the order in which they are specified.
Note that the values in the [DataRow] attribute must be primitives, so you can't use a DateTime or decimal for example. If you want them, you will have to work around this limitation (e.g. instead of having a DateTime parameter to represent a date, you could have three integer parameters representing year, month and day, and create the DateTime within the test body).