Fix for the libraries to parts map.

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 test.src.task.dart_work_manager_test;
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/engine.dart'
     show
@@ skipping 558 matching lines @@
   }
 
   void test_resultsComputed_includedParts_updatePartLibraries() {
     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');
     _getOrCreateEntry(part1).setValue(CONTAINING_LIBRARIES, [], []);
     expect(cache.getState(part1, CONTAINING_LIBRARIES), CacheState.VALID);
+    // configure AnalysisContext mock
+    when(context.prioritySources).thenReturn(<Source>[]);
+    when(context.shouldErrorsBeAnalyzed(anyObject, anyObject))
+        .thenReturn(false);
     // library1 parts
     manager.resultsComputed(library1, {
-      INCLUDED_PARTS: [part1, part2]
+      INCLUDED_PARTS: [part1, part2],
+      SOURCE_KIND: SourceKind.LIBRARY
     });
     expect(manager.partLibrariesMap[part1], [library1]);
     expect(manager.partLibrariesMap[part2], [library1]);
     expect(manager.partLibrariesMap[part3], isNull);
     expect(manager.libraryPartsMap[library1], [part1, part2]);
     expect(manager.libraryPartsMap[library2], isNull);
     // library2 parts
     manager.resultsComputed(library2, {
-      INCLUDED_PARTS: [part2, part3]
+      INCLUDED_PARTS: [part2, part3],
+      SOURCE_KIND: SourceKind.LIBRARY
     });
     expect(manager.partLibrariesMap[part1], [library1]);
     expect(manager.partLibrariesMap[part2], [library1, library2]);
     expect(manager.partLibrariesMap[part3], [library2]);
     expect(manager.libraryPartsMap[library1], [part1, part2]);
     expect(manager.libraryPartsMap[library2], [part2, part3]);
     // part1 CONTAINING_LIBRARIES
     expect(cache.getState(part1, CONTAINING_LIBRARIES), CacheState.INVALID);
   }
 
@@ skipping 73 matching lines @@
         ]));
   }
 
   void test_resultsComputed_sourceKind_isPart() {
     manager.unknownSourceQueue.addAll([source1, source2, source3]);
     manager.resultsComputed(source2, {SOURCE_KIND: SourceKind.PART});
     expect_librarySourceQueue([]);
     expect_unknownSourceQueue([source1, source3]);
   }
 
+  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);
+  }
+
   CacheEntry _getOrCreateEntry(Source source) {
     CacheEntry entry = cache.get(source);
     if (entry == null) {
       entry = new CacheEntry(source);
       cache.put(entry);
     }
     return entry;
   }
 }
 
@@ skipping 23 matching lines @@
   }
 
   @override
   ChangeNoticeImpl getNotice(Source source) {
     return _pendingNotices.putIfAbsent(
         source, () => new ChangeNoticeImpl(source));
   }
 
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }