public async Task Execute()
{
await Publisher.PublishAsync(nameof(CancellationTokenSubscriberTest), "Test Message");
await HandledMessages.WaitOneMessage(CancellationToken);
// Explicitly stop Bootstrapper to prove the cancellation token works.
var bootstrapper = Container.GetRequiredService <Bootstrapper>();
await bootstrapper.StopAsync(CancellationToken.None);
var(message, token) = HandledMessages
.OfType <(string Message, CancellationToken Token)>()
.Single();
Assert.Equal("Test Message", message);
Assert.True(token.IsCancellationRequested);
}