gistfile1.as

[Test]
public function command_dispatches_completed_when_all_sync_commands_complete():void
{
    var command:CompositeSignalCommand = getCompositeSignalCommandWithThreeSubCommands();
    var completedSignal:VerifyDispatchSignal = new VerifyDispatchSignal();
    command.completed = completedSignal;

    command.execute();

    assertThat(completedSignal.dispatched, isTrue());
}

private function getCompositeSignalCommandWithThreeSubCommands():CompositeSignalCommand
{
    var command:CompositeSignalCommand = new CompositeSignalCommand();
    command.reflector = new SwiftSuspendersReflector();
    command.injector = context.getInjector();
    command.signalCommandMap = new SignalCommandMap(command.injector);

    command.addCommand(TestCompleteSyncCommand);
    command.addCommand(TestCompleteSyncCommand);
    command.addCommand(TestCompleteSyncCommand);

    return command
}

gistfile2.as

package org.robotlegs.test.support
{
    import org.osflash.signals.Signal;

    public class VerifyDispatchSignal extends Signal
    {
        public var dispatched:Boolean;

        override public function dispatch(... rest):void
        {
            dispatched = true;
            super.dispatch(rest);
        }
    }
}