Add a test for #2728
Add a test for #2728

andersio/ReactiveCocoa,rpowelll/ReactiveCocoa,walkingsmarts/ReactiveCocoa,smilypeda/ReactiveCocoa,calebd/ReactiveCocoa,smilypeda/ReactiveCocoa,andersio/ReactiveCocoa,RuiAAPeres/ReactiveCocoa,victorlin/ReactiveCocoa,sandyway/ReactiveCocoa,RuiAAPeres/ReactiveCocoa,andersio/ReactiveCocoa,rpowelll/ReactiveCocoa,tzongw/ReactiveCocoa,tzongw/ReactiveCocoa,ikesyo/ReactiveCocoa,walkingsmarts/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,rpowelll/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,calebd/ReactiveCocoa,ohwutup/ReactiveCocoa,calebd/ReactiveCocoa,ohwutup/ReactiveCocoa,sandyway/ReactiveCocoa,victorlin/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,victorlin/ReactiveCocoa,ohwutup/ReactiveCocoa,sandyway/ReactiveCocoa,tzongw/ReactiveCocoa,ikesyo/ReactiveCocoa,smilypeda/ReactiveCocoa,RuiAAPeres/ReactiveCocoa,walkingsmarts/ReactiveCocoa