Share LibrarySpecificUnits when possible

pkg/analyzer/test/src/task/driver_test.dart

 // Copyright (c) 2015, 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 analyzer.test.src.task.driver_test;
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/task/driver.dart';
@@ skipping 19 matching lines @@
 class AbstractDriverTest {
   TaskManager taskManager = new TaskManager();
   List<WorkManager> workManagers = <WorkManager>[];
   InternalAnalysisContext context = new _InternalAnalysisContextMock();
   AnalysisDriver analysisDriver;
 
   void setUp() {
     context = new _InternalAnalysisContextMock();
     analysisDriver = new AnalysisDriver(taskManager, workManagers, context);
     when(context.aboutToComputeResult(anyObject, anyObject)).thenReturn(false);
+    when(context.canonicalizeTarget(anyObject)).thenInvoke((target) => target);
   }
 }
 
 @reflectiveTest
 class AnalysisDriverTest extends AbstractDriverTest {
   WorkManager workManager1 = new _WorkManagerMock();
   WorkManager workManager2 = new _WorkManagerMock();
 
   AnalysisTarget target1 = new TestSource('/1.dart');
   AnalysisTarget target2 = new TestSource('/2.dart');
@@ skipping 809 matching lines @@
       if (!skipInputs.contains(dependency) &&
           !evaluatedNodes.contains(dependency)) {
         return dependency;
       }
     }
     return null;
   }
 }
 
 class _WorkManagerMock extends TypedMock implements WorkManager {}