Add a couple of new tests for DartWorkManager.

pkg/analyzer/test/src/task/dart_work_manager_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.dart_work_manager_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart' show ScannerErrorCode;
 import 'package:analyzer/src/generated/engine.dart'
@@ skipping 329 matching lines @@
     manager.libraryPartsMap[library1] = [part1];
     manager.libraryPartsMap[library2] = [part1, part2];
     // getLibrariesContainingPart
     expect(manager.getLibrariesContainingPart(part1),
         unorderedEquals([library1, library2]));
     expect(
         manager.getLibrariesContainingPart(part2), unorderedEquals([library2]));
     expect(manager.getLibrariesContainingPart(part3), isEmpty);
   }
 
+  void test_getLibrariesContainingPart_askResultProvider() {
+    Source part1 = new TestSource('part1.dart');
+    Source part2 = new TestSource('part2.dart');
+    Source part3 = new TestSource('part3.dart');
+    Source library1 = new TestSource('library1.dart');
+    Source library2 = new TestSource('library2.dart');
+    // configure AnalysisContext mock
+    when(context.aboutToComputeResult(anyObject, CONTAINING_LIBRARIES))
+        .thenInvoke((CacheEntry entry, ResultDescriptor result) {
+      if (entry.target == part1) {
+        entry.setValue(result, <Source>[library1, library2], []);
+        return true;
+      }
+      if (entry.target == part2) {
+        entry.setValue(result, <Source>[library2], []);
+        return true;
+      }
+      return false;
+    });
+    // getLibrariesContainingPart
+    expect(manager.getLibrariesContainingPart(part1),
+        unorderedEquals([library1, library2]));
+    expect(
+        manager.getLibrariesContainingPart(part2), unorderedEquals([library2]));
+    expect(manager.getLibrariesContainingPart(part3), isEmpty);
+  }
+
   void test_getLibrariesContainingPart_inSDK() {
     Source part = new _SourceMock('part.dart');
     when(part.isInSystemLibrary).thenReturn(true);
     // SDK work manager
     DartWorkManager sdkDartWorkManagerMock = new _DartWorkManagerMock();
     when(sdkDartWorkManagerMock.getLibrariesContainingPart(part))
         .thenReturn([source2, source3]);
     // SDK context mock
     InternalAnalysisContext sdkContextMock = new _InternalAnalysisContextMock();
     when(sdkContextMock.workManagers).thenReturn([sdkDartWorkManagerMock]);
@@ skipping 398 matching lines @@
 
   void test_resultsComputed_updatePartsLibraries_partParsed() {
     Source part = new TestSource('part.dart');
     expect(manager.libraryPartsMap, isEmpty);
     // part.dart parsed, no changes is the map of libraries
     manager.resultsComputed(
         part, {SOURCE_KIND: SourceKind.PART, INCLUDED_PARTS: <Source>[]});
     expect(manager.libraryPartsMap, isEmpty);
   }
 
+  void test_unitIncrementallyResolved() {
+    manager.unitIncrementallyResolved(source1, source2);
+    expect_librarySourceQueue([source1]);
+  }
+
   CacheEntry _getOrCreateEntry(Source source, [bool explicit = true]) {
     CacheEntry entry = cache.get(source);
     if (entry == null) {
       entry = new CacheEntry(source);
       entry.explicitlyAdded = explicit;
       cache.put(entry);
     }
     return entry;
   }
 }
@@ skipping 44 matching lines @@
 class _SourceFactoryMock extends TypedMock implements SourceFactory {}
 
 class _SourceMock extends TypedMock implements Source {
   final String shortName;
   _SourceMock(this.shortName);
   @override
   String get fullName => '/' + shortName;
   @override
   String toString() => fullName;
 }