A local file-based Index implementation.

pkg/analysis_server/test/index/store/single_source_container.dart

Index: pkg/analysis_server/test/index/store/single_source_container.dart
diff --git a/pkg/analysis_server/test/index/store/single_source_container.dart b/pkg/analysis_server/test/index/store/single_source_container.dart
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+// 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.index.store_single_source_container;
+
+import 'package:analyzer/src/generated/source.dart';
+
+
+/**
+ * A [SourceContainer] with a single [Source].
+ */
+class SingleSourceContainer implements SourceContainer {
+  final Source _source;
+
+  SingleSourceContainer(this._source);
+
+  @override
+  bool contains(Source source) => source == _source;
+}