// make unit test on plain C# class
public class SampleGroup
{
    // all public methods are automatically registered in test group
    public void SumTest()
    {
        var x = int.Parse("100");
        var y = int.Parse("200");

        // using RuntimeUnitTestToolkit;
        // 'Is' is Assertion method, same as Assert(actual, expected)
        (x + y).Is(300);
    }

    // return type 'IEnumerator' is marked as async test method
    public IEnumerator AsyncTest()
    {
        var testObject = new GameObject("Test");

        // wait asynchronous coroutine(UniRx coroutine runnner)
        yield return MainThreadDispatcher.StartCoroutine(MoveToRight(testObject));

        // assrtion
        testObject.transform.position.x.Is(60);

        GameObject.Destroy(testObject);
    }

    IEnumerator MoveToRight(GameObject o)
    {
        for (int i = 0; i < 60; i++)
        {
            var p = o.transform.position;
            p.x += 1;
            o.transform.position =  p;
            yield return null;
        }
    }
}

public static class UnitTestLoader
{
    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
    public static void Register()
    {
        // setup created test class to RegisterAllMethods<T>
        UnitTest.RegisterAllMethods<SampleGroup>();
     
        // and add other classes
    }
}

public IEnumerator WithUniRxTestA()
{
    // subscribe event callback
    var subscription = obj.SomeEventAsObservable().First().ToYieldInstruction();

    // raise event 
    obj.RaiseEventSomething();

    // check event raise complete
    yield return subscription;

    subscription.Result.Is();
}

public IEnumerator UniRxTestB()
{
    // monitor value changed
    var subscription = obj.ObserveEveryValueChanged(x => x.someValue).Skip(1).First().ToYieldInstruction();

    // do something
    obj.DoSomething();

    // wait complete
    yield return subscription;

    subscription.Result.Is();
}