Rollback CL 240003005, causes deleting contexts after marker operations.

editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/internal/analysis/model/WorkspaceDeltaProcessorTest.java

 /*
  * Copyright (c) 2013, the Dart project authors.
  * 
  * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
  * 
  * http://www.eclipse.org/legal/epl-v10.html
  * 
  * Unless required by applicable law or agreed to in writing, software distributed under the License
  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
  * or implied. See the License for the specific language governing permissions and limitations under
  * the License.
  */
 package com.google.dart.tools.core.internal.analysis.model;
 
 import com.google.dart.engine.context.AnalysisContext;
+import com.google.dart.engine.context.ChangeSet;
 import com.google.dart.engine.index.Index;
 import com.google.dart.engine.sdk.DartSdk;
 import com.google.dart.engine.sdk.DirectoryBasedDartSdk;
+import com.google.dart.engine.source.FileBasedSource;
 import com.google.dart.tools.core.DartCore;
 import com.google.dart.tools.core.analysis.model.Project;
 import com.google.dart.tools.core.analysis.model.ProjectManager;
 import com.google.dart.tools.core.internal.builder.MockContext;
 import com.google.dart.tools.core.internal.builder.TestProjects;
 import com.google.dart.tools.core.internal.model.DartIgnoreManager;
 import com.google.dart.tools.core.mock.MockDelta;
 import com.google.dart.tools.core.mock.MockFile;
 import com.google.dart.tools.core.mock.MockFolder;
 import com.google.dart.tools.core.mock.MockProject;
@@ skipping 105 matching lines @@
     manager.assertProjectRemoved(null);
     processor.assertBackgroundAnalysisStarted(false);
   }
 
   public void test_resourceChanged_file_in_package() {
     MockFolder packages = projectContainer.getMockFolder(DartCore.PACKAGES_DIRECTORY_NAME);
     MockFolder pkg1 = packages.getMockFolder("pkg1");
     MockFile file = pkg1.getMockFile("bar.dart");
     MockDelta delta = new MockDelta(projectContainer);
     delta.add(packages).add(pkg1).add(file);
-    MockContext context = (MockContext) project.getDefaultContext();
     processor.resourceChanged(new MockResourceChangeEvent(delta));
 
+    ChangeSet expected = new ChangeSet();
+    expected.changedSource(new FileBasedSource(file.getLocation().toFile()));
+    MockContext context = (MockContext) project.getDefaultContext();
+    context.assertChanged(expected);
+    context.assertNoCalls();
     manager.assertProjectRemoved(null);
-    MockContext newContext = (MockContext) project.getDefaultContext();
-    assertNotSame(context, newContext);
-
+    processor.assertBackgroundAnalysisStarted(true);
   }
 
   public void test_resourceChanged_project_removed() {
     MockDelta delta = new MockDelta(projectContainer, IResourceDelta.REMOVED);
     processor.resourceChanged(new MockResourceChangeEvent(delta));
 
     MockContext context = (MockContext) project.getDefaultContext();
     context.assertNoCalls();
     manager.assertProjectRemoved(project);
     processor.assertBackgroundAnalysisStarted(false);
   }
 
   @Override
   protected void setUp() throws Exception {
     rootContainer = new MockWorkspaceRoot();
     projectContainer = TestProjects.newPubProject3(rootContainer);
     rootContainer.add(projectContainer);
     DartSdk sdk = DirectoryBasedDartSdk.getDefaultSdk();
     String sdkContextId = "sdk-id";
     manager = new MockProjectManagerImpl(rootContainer, sdk, sdkContextId, new DartIgnoreManager());
     project = new MockProjectImpl(projectContainer, sdk, sdkContextId, manager.getIndex());
     processor = new Target(manager);
   }
 }