Extract testing utilities into a separate package.

pkg/analyzer/test/index/store/mocks.dart

+// 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.mocks;
+
+import 'package:analyzer/index/index.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/index/store/codec.dart';
+import 'package:typed_mock/typed_mock.dart';
+
+
+class MockContextCodec extends TypedMock implements ContextCodec {
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class MockElementCodec extends TypedMock implements ElementCodec {
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class MockInstrumentedAnalysisContextImpl extends TypedMock implements
+    InstrumentedAnalysisContextImpl {
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class MockLocation extends TypedMock implements Location {
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class MockRelationshipCodec extends TypedMock implements RelationshipCodec {
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}