Converted Observatory library-view element

runtime/observatory/tests/observatory_ui/mocks/repositories/eval.dart

+// Copyright (c) 2016, 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.
+
+part of mocks;
+
+typedef Future<M.Object> EvalRepositoryMockCallback(M.IsolateRef isolate,
+                                                    M.ObjectRef context,
+                                                    String expression);
+
+class EvalRepositoryMock implements M.EvalRepository {
+  final EvalRepositoryMockCallback _get;
+
+  EvalRepositoryMock({EvalRepositoryMockCallback getter})
+    : _get = getter;
+
+  Future<M.Object> evaluate(M.IsolateRef isolate, M.ObjectRef context,
+                            String expression){
+    if (_get != null) {
+      return _get(isolate, context, expression);
+    }
+    return new Future.value(null);
+  }
+}