Make Map.keys/values Iterables.

utils/tests/pub/test_pub.dart

 // Copyright (c) 2012, 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.
 
 /**
  * Test infrastructure for testing pub. Unlike typical unit tests, most pub
  * tests are integration tests that stage some stuff on the file system, run
  * pub, and then validate the results. This library provides an API to build
  * tests like that.
  */
@@ skipping 178 matching lines @@
       for (var spec in resolvedPubspecs) {
         var name = spec['name'];
         var version = spec['version'];
         var versions = _servedPackages.putIfAbsent(
             name, () => <String, String>{});
         versions[version] = yaml(spec);
       }
 
       _servedPackageDir.contents.clear();
       for (var name in _servedPackages.keys) {
-        var versions = _servedPackages[name].keys;
+        var versions = _servedPackages[name].keys.toList());
         _servedPackageDir.contents.addAll([
           file('$name.json',
               json.stringify({'versions': versions})),
           dir(name, [
             dir('versions', flatten(versions.mappedBy((version) {
               return [
                 file('$version.yaml', _servedPackages[name][version]),
                 tar('$version.tar.gz', [
                   file('pubspec.yaml', _servedPackages[name][version]),
                   libDir(name, '$name $version')
@@ skipping 1453 matching lines @@
 /// calling [completion] is unnecessary.
 void expectLater(Future actual, matcher, {String reason,
     FailureHandler failureHandler, bool verbose: false}) {
   _schedule((_) {
     return actual.then((value) {
       expect(value, matcher, reason: reason, failureHandler: failureHandler,
           verbose: false);
     });
   });
 }