Multi threading unit test

I have a C# method that will be called multiple times using different threads. So I want to create a unit test that will test this method on several threads, but I'm not sure I'm doing it right.

This is my unit test without threading:

    [TestMethod]
    public void FromLocalPoints()
    {
        var projectedCoordinates = this.ConvertFromLocalPoints();
        foreach (var projectedCoordinate in projectedCoordinates)
        {
            Debug.Write(projectedCoordinate.X);
            Debug.Write("; ");
            Debug.WriteLine(projectedCoordinate.Y);
        }
    }

this.ConvertFromLocalPoints() is calling the actual method I want to test.

I've created a delegate, an event and an handler:

public delegate void ReprojectCompleteHandler(IEnumerable<Coordinate> projectedCoordinates);
public event ReprojectCompleteHandler ReprojectCompleteEvent;
private void ReprojectHandler(IEnumerable<Coordinate> projectedCoordinates)
{
        Debug.WriteLine("Conversion is complete");
}

In my TestSetup I listen to my event:

    [TestInitialize]
    public void TestSetup()
    {
        this.ReprojectCompleteEvent += this.ReprojectHandler;
    }

My unit test is:

    [TestMethod]
    public void FromLocalPointsThreaded()
    {
        // Call FromLocalPoints multiple times in separate threads to check if it is thread safe
        for (var i = 0; i < 10; i++)
        {
            var myThread = new Thread(this.ConvertFromLocalPointsThreaded);    
        }

        Debug.WriteLine("FromLocalPointsThreaded is done");
    }

    private void ConvertFromLocalPointsThreaded()
    {
        var projectedCoordinates = this.ConvertFromLocalPoints();

        // Send result to delegate/event:
        if (this.ReprojectCompleteEvent != null)
        {
            this.ReprojectCompleteEvent(projectedCoordinates);
        }
    }

When I run this unit test I get once 'FromLocalPointsThreaded is done' in my output but no 'Conversion is complete'.

What am I missing to get this working? Or should I use a different approach?