Kill service_test.cc tests in favor of dart tests for the service protocol.

runtime/observatory/tests/service/get_retaining_path_rpc_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.
+// VMOptions=--compile-all --error_on_bad_type --error_on_bad_override
+
+import 'dart:async';
+
+import 'package:observatory/service_io.dart';
+import 'package:unittest/unittest.dart';
+
+import 'test_helper.dart';
+
+class _TestClass {
+  _TestClass(this.x, this.y);
+  var x;
+  var y;
+}
+
+var target1;
+var target2;
+var target3;
+var globalObject;
+var globalList;
+
+void warmup() {
+  target1 = new _TestClass(null, null);
+  target2 = new _TestClass(null, null);
+  globalObject = new _TestClass(target1, target2);
+
+  target3 = new _TestClass(null, null);
+  globalList = new List(100);
+  globalList[12] = target3;
+}
+
+eval(Isolate isolate, String expression) async {
+  Map params = {
+    'targetId': isolate.rootLib.id,
+    'expression': expression,
+  };
+  return await isolate.invokeRpcNoUpgrade('eval', params);
+}
+
+var tests = [
+  // simple path
+  (Isolate isolate) async {
+    var obj = await eval(isolate, 'globalObject');
+    var params = {
+      'targetId': obj['id'],
+      'limit': 4,
+    };
+    var result = await isolate.invokeRpcNoUpgrade('_getRetainingPath', params);
+    expect(result['elements'][1]['value']['name'], equals('globalObject'));
+  },
+
+  // missing limit.
+  (Isolate isolate) async {
+    var obj = await eval(isolate, 'globalObject');
+    var params = {
+      'targetId': obj['id'],
+    };
+    var result = await isolate.invokeRpcNoUpgrade('_getRetainingPath', params);
+    expect(result['message'], contains("invalid 'limit' parameter"));
+  },
+
+  (Isolate isolate) async {
+    var target1 = await eval(
+        isolate, '() { var tmp = target1; target1 = null; return tmp;} ()');
+    var params = {
+      'targetId': target1['id'],
+      'limit': 4,
+    };
+    var result = await isolate.invokeRpcNoUpgrade('_getRetainingPath', params);
+    expect(result['type'], equals('RetainingPath'));
+    expect(result['elements'][0]['parentField']['name'], equals('x'));
+    expect(result['elements'][2]['value']['name'], equals('globalObject'));
+  },
+
+  (Isolate isolate) async {
+    var target2 = await eval(
+        isolate, '() { var tmp = target2; target2 = null; return tmp;} ()');
+    var params = {
+      'targetId': target2['id'],
+      'limit': 4,
+    };
+    var result = await isolate.invokeRpcNoUpgrade('_getRetainingPath', params);
+    expect(result['type'], equals('RetainingPath'));
+    expect(result['elements'][0]['parentField']['name'], equals('y'));
+    expect(result['elements'][2]['value']['name'], equals('globalObject'));
+  },
+
+  (Isolate isolate) async {
+    var target3 = await eval(
+        isolate, '() { var tmp = target3; target3 = null; return tmp;} ()');
+    var params = {
+      'targetId': target3['id'],
+      'limit': 4,
+    };
+    var result = await isolate.invokeRpcNoUpgrade('_getRetainingPath', params);
+    expect(result['type'], equals('RetainingPath'));
+    expect(result['elements'][0]['parentListIndex'], equals(12));
+    expect(result['elements'][2]['value']['name'], equals('globalList'));
+  },
+];
+
+main(args) async => runIsolateTests(args, tests, testeeBefore:warmup);