xUnit - Display test names for theory memberdata (TestCase)

Currently I can only see one test in the test explorer even tho I have 6 tests in the test case.

This is because your test data is not considered serializable by xUnit.net. See this issue: https://github.com/xunit/xunit/issues/1473

The salient details are:

The short answer

If some of your theory data can't be "serialized" by xUnit.net, then it cannot be encapsulated into the serialization of a test case which we're required to do for the Visual Studio test runner.

The long answer

In the Visual Studio test runner, test cases are discovered in one process, and executed in another. Therefore, test cases must be able to be turned into an unqualified string representation (aka, "serialized") in order to be run. We can also serialize at the test method level, because that just involves knowing the type and method name (both strings). When you start putting data into the mix, we need to ensure we know how to serialize that data; if we can't serialize all of the data for a theory, then we have to fall back to just a single method (which we know we can serialize).

The full answer contains more detail.

In NUnit you can easily set each test name in the test case using the SetName function in a TestCaseData class.

Does xUnit have a similar function for this?

Not at this time.

This worked for me:

public class TestScenario
{
...
    public override string ToString()
    {
        return $"Role: {Role}...";
    }
}

    [Theory]
    [ClassData(typeof(MyProvider))]
    public void TestScenarios(TestScenario scenaro)
    {
        TestScenarioInternal(scenaro);

    }