public async Task Run_LoopsUntilShutdownSignal()
{
shutdown.SetupGet(s => s.ShouldShutdown).Returns(false);
var t = Task.Run(() => testThread.Run());
await Task.Delay(10);
Assert.IsFalse(t.IsCompleted);
await Task.Delay(10);
Assert.IsFalse(t.IsCompleted);
shutdown.SetupGet(s => s.ShouldShutdown).Returns(true);
await Task.Delay(10);
Assert.IsTrue(t.IsCompleted);
await t;
}