Change integration test notifications to use structured objects.

pkg/analysis_server/test/integration/server/status_test.dart

 // Copyright (c) 2014, 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.
 
 library test.integration.server.status;
 
 import 'dart:async';
 
-import '../../reflective_tests.dart';
+import 'package:analysis_server/src/protocol.dart';
 import 'package:unittest/unittest.dart';
 
+import '../../reflective_tests.dart';
 import '../integration_tests.dart';
 
 @ReflectiveTestCase()
 class Test extends AbstractAnalysisServerIntegrationTest {
   test_status() {
     // After we kick off analysis, we should get one server.status message with
     // analyzing=true, and another server.status message after that with
     // analyzing=false.
     Completer analysisBegun = new Completer();
     Completer analysisFinished = new Completer();
-    onServerStatus.listen((params) {
-      if (params['analysis'] != null) {
-        if (params['analysis']['isAnalyzing']) {
+    onServerStatus.listen((ServerStatusParams params) {
+      if (params.analysis != null) {
+        if (params.analysis.isAnalyzing) {
           expect(analysisBegun.isCompleted, isFalse);
           analysisBegun.complete();
         } else {
           expect(analysisFinished.isCompleted, isFalse);
           analysisFinished.complete();
         }
       }
     });
     writeFile(sourcePath('test.dart'), '''
 main() {
   var x;
 }''');
     standardAnalysisSetup();
     expect(analysisBegun.isCompleted, isFalse);
     expect(analysisFinished.isCompleted, isFalse);
     return analysisBegun.future.then((_) {
       expect(analysisFinished.isCompleted, isFalse);
       return analysisFinished.future;
     });
   }
 }
 
 main() {
   runReflectiveTests(Test);
 }