[inspector] introduced v8::debug::EntriesPreview for inspector

test/inspector/runtime/internal-properties.js

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+print('Checks internal properties in Runtime.getProperties output');
+
+Protocol.Runtime.enable();
+Protocol.Debugger.enable();
+
+InspectorTest.runTestSuite([
+  function generatorFunction(next) {
+    checkExpression('(function* foo() { yield 1 })').then(next);
+  },
+
+  function regularFunction(next) {
+    checkExpression('(function foo() {})').then(next);
+  },
+
+  function boxedObjects(next) {
+    checkExpression('new Number(239)')
+      .then(() => checkExpression('new Boolean(false)'))
+      .then(() => checkExpression('new String(\'abc\')'))
+      .then(() => checkExpression('Object(Symbol(42))'))
+      .then(next);
+  },
+
+  function promise(next) {
+    checkExpression('Promise.resolve(42)')
+      .then(() => checkExpression('new Promise(() => undefined)'))
+      .then(next);
+  },
+
+  function generatorObject(next) {
+    checkExpression('(function* foo() { yield 1 })()')
+      .then(next);
+  },
+
+  function iteratorObject(next) {
+    checkExpression('(new Map([[1,2]])).entries()')
+      .then(() => checkExpression('(new Set([[1,2]])).entries()'))
+      .then(next);
+  }
+]);
+
+function checkExpression(expression)
+{
+  InspectorTest.log(`expression: ${expression}`);
+  return Protocol.Runtime.evaluate({ expression: expression })
+    .then(message => Protocol.Runtime.getProperties({ objectId: message.result.result.objectId }))
+    .then(message => { delete message.result.result; return message; })
+    .then(InspectorTest.logMessage);
+}