     }
     
     func testFilterNoSuchElement() {
-        let e = self.expectationWithDescription("")
+        let e = self.expectation()
         future(3).filter { $0 > 5}.onComplete { result in
             if let err = result.error {
                 XCTAssert(err.domain == NoSuchElementError, "filter should yield no result")

            future(fibonacci(i))
        }
        
        let e = self.expectationWithDescription("")
        
        f.onSuccess { fibSeq in
            XCTAssertEqual(fibSeq.count, n)

            Future.completeAfter(0.4, withValue: 83),
        ]
        
        let e = self.expectation()
        
        FutureUtils.firstCompletedOf(futures).onSuccess { val in
            XCTAssertEqual(val, 9)
