 		}
 		
 		describe("combinePrevious") {
-			
 			var sink: Signal<Int, NoError>.Observer!
-			var initialValue: Int!
+			let initialValue: Int = 0
 			var latestValues: (Int, Int)?
 			
 			beforeEach {
 				latestValues = nil
-				initialValue = 0
 				
 				let (signal, baseSink) = Signal<Int, NoError>.pipe()
 				sink = baseSink

				expect(latestValues?.0).to(equal(1))
				expect(latestValues?.1).to(equal(2))
			}
			
		}

		describe("combineLatest") {
			
			var sinkA: Signal<Int, NoError>.Observer!
			var sinkB: Signal<Int, NoError>.Observer!
			var sinkC: Signal<Int, NoError>.Observer!

				expect(completed).to(beTruthy())
			}
		}
	}
}
