v8/test/inspector/runtime/get-properties-preview.js

// Copyright 2016 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.

let {session, contextGroup, Protocol} = InspectorTest.start('Tests generated previews in Runtime.getProperties');

contextGroup.setupInjectedScriptEnvironment();

Protocol.Runtime.evaluate({ "expression": "({p1: {a:1}, p2: {b:'foo', bb:'bar'}})" }).then(callbackEvaluate);

function callbackEvaluate(result)
{
  Protocol.Runtime.getProperties({ "objectId": result.result.result.objectId, "ownProperties": true }).then(callbackGetProperties.bind(null, false));
  Protocol.Runtime.getProperties({ "objectId": result.result.result.objectId, "ownProperties": true, "generatePreview": true }).then(callbackGetProperties.bind(null, true));
}

function callbackGetProperties(completeTest, result)
{
  for (var property of result.result.result) {
    if (!property.value || property.name === "__proto__")
      continue;
    if (property.value.preview)
      InspectorTest.log(property.name + " : " + JSON.stringify(property.value.preview, null, 4));
    else
      InspectorTest.log(property.name + " : " + property.value.description);
  }
  if (completeTest)
    InspectorTest.completeTest();
}