pkg/async: cleanup unused variables in tests

test/stream_zip_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import "dart:async";
 import "package:async/stream_zip.dart";
 import "package:test/test.dart";
 
 /// Create an error with the same values as [base], except that it throwsA
 /// when seeing the value [errorValue].
@@ skipping 137 matching lines @@
       Timer.run(() { controller.addError("BAD-6"); });
       s.close();
     });
     testZip([mks([1, 2, 3]).transform(trans),
              mks([4, 5, 6]).transform(trans),
              controller.stream],
            [[1, 4, 7], [2, 5, 8], [3, 6, 9]]);
   });
 
   test("Pause/Resume", () {
-    var done = expectAsync((){});  // Call to complete test.
-
     int sc1p = 0;
     StreamController c1 = new StreamController(
       onPause: () {
         sc1p++;
       },
       onResume: () {
         sc1p--;
       });
 
     int sc2p = 0;
     StreamController c2 = new StreamController(
       onPause: () {
         sc2p++;
       },
       onResume: () {
         sc2p--;
       });
+
+    var done = expectAsync((){
+      expect(sc1p, equals(1));
+      expect(sc2p, equals(0));
+    });  // Call to complete test.

[nweiz, 2015/07/01 00:47:24]

Why are these expects added?

+
     Stream zip = new StreamZip([c1.stream, c2.stream]);
 
     const ms25 = const Duration(milliseconds: 25);
 
     // StreamIterator uses pause and resume to control flow.
     StreamIterator it = new StreamIterator(zip);
 
     it.moveNext().then((hasMore) {
       expect(hasMore, isTrue);
       expect(it.current, equals([1, 2]));
@@ skipping 35 matching lines @@
       } else if (ctr == 2) {
         sub.pause();
         new Future.delayed(const Duration(milliseconds: 25)).then((_) {
           sub.resume();
         });
       }
       ctr++;
     }, count: 4));
   });
 }