Generate Unit tests in [UnitySetUp] phase

Hey,

I had a look around the forum but couldnt find the answer to this so creating a new post. I want to create some tests based on a dataset that is changing with each release. Hardcoding the tests wont work. In the past i have been able to generate the TestCaseData during the setup phase of testing however since there is an unknown time delay between requesting the data and it appearing I am hoping to now use the [UnitySetUp] which allows be to yield until the data is ready.

Ive created a simple code sample which has the same issues any help would be amazing;

As far as i can tell from documentation this should work so i must be missing something small/obvious!

using System.Collections;
using System.Collections.Generic;
using NUnit.Framework;
using UnityEngine.TestTools;

namespace Tests
{
    [TestFixture(Category = "Database", Description = "Verify database data is accurate and valid")]
    public class BasicUnitTestExample
    {
        public static List<TestCaseData> TestData;

        [UnitySetUp]
        public IEnumerator TestSetup()
        {
            //Wait for data to be loaded in background
            yield return null;

            //From data loaded create tests
            TestData = new List<TestCaseData>();

            //Mock test created
            TestCaseData caseA = new TestCaseData("Hello");
            caseA.SetName("A");
            TestData.Add(caseA);

            TestCaseData caseB = new TestCaseData("There");
            caseB.SetName("B");
            TestData.Add(caseB);
        }

        [Test, TestCaseSource(nameof(TestData))]
        public void IsEmpty(string data)
        {
            Assert.IsTrue(string.IsNullOrEmpty(data));
        }
    }
}

No, I don’t think this can work. The test execution plan is created before any tests begin executing; you can’t dynamically add/remove tests in the middle of a run.