public async Task PublishAsync_Runs_All_Interested_Subscribers()
{
const string message = nameof(message);
var subscriber1Handled = false;
var subscriber2Handled = false;
var subscriber3Handled = false;
var subscriber4Handled = false;
var messageChannel = new MessageChannel();
messageChannel.Subscribe <string>(m =>
{
subscriber1Handled = true;
return(Task.CompletedTask);
});
var subscriber2 = messageChannel.Subscribe <string>(m =>
{
subscriber2Handled = true;
return(Task.CompletedTask);
});
subscriber2.Filter(m => m == message);
var subscriber3 = messageChannel.Subscribe <string>(m =>
{
subscriber3Handled = true;
return(Task.CompletedTask);
});
subscriber3.Filter(m => m != message);
messageChannel.Subscribe <int>(m =>
{
subscriber4Handled = true;
return(Task.CompletedTask);
});
await messageChannel.PublishAsync(message).ConfigureAwait(false);
Assert.True(subscriber1Handled);
Assert.True(subscriber2Handled);
Assert.False(subscriber3Handled);
Assert.False(subscriber4Handled);
}