v8/test/inspector/runtime/query-objects.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.

let {session, contextGroup, Protocol} =
  InspectorTest.start('Checks Runtime.queryObjects');

InspectorTest.runAsyncTestSuite([
  async function testClass() {
    let contextGroup = new InspectorTest.ContextGroup();
    let session = contextGroup.connect();
    let Protocol = session.Protocol;

    InspectorTest.log('Declare class Foo & store its constructor.');
    await Protocol.Runtime.evaluate({
      expression: 'class Foo{constructor(){}};'
    });
    let {result:{result:{objectId}}} = await Protocol.Runtime.evaluate({
      expression: 'Foo.prototype'
    });

    for (let i = 0; i < 2; ++i) {
      InspectorTest.log('Create object with class Foo.');
      Protocol.Runtime.evaluate({expression: 'new Foo()'});
      await queryObjects(session, objectId, 'Foo');
    }

    session.disconnect();
  },

  async function testDerivedNewClass() {
    let contextGroup = new InspectorTest.ContextGroup();
    let session = contextGroup.connect();
    let Protocol = session.Protocol;

    InspectorTest.log('Declare class Foo & store its constructor.');
    Protocol.Runtime.evaluate({expression: 'class Foo{};'});
    let {result:{result:{objectId}}} = await Protocol.Runtime.evaluate({
      expression: 'Foo.prototype'
    });
    let fooConstructorId = objectId;

    InspectorTest.log('Declare class Boo extends Foo & store its constructor.');
    Protocol.Runtime.evaluate({expression: 'class Boo extends Foo{};'});
    ({result:{result:{objectId}}} = await Protocol.Runtime.evaluate({
      expression: 'Boo.prototype'
    }));
    let booConstructorId = objectId;

    await queryObjects(session, fooConstructorId, 'Foo');
    await queryObjects(session, booConstructorId, 'Boo');

    InspectorTest.log('Create object with class Foo');
    Protocol.Runtime.evaluate({expression: 'new Foo()'});
    await queryObjects(session, fooConstructorId, 'Foo');

    InspectorTest.log('Create object with class Boo');
    Protocol.Runtime.evaluate({expression: 'new Boo()'});
    await queryObjects(session, fooConstructorId, 'Foo');
    await queryObjects(session, booConstructorId, 'Boo');

    session.disconnect();
  },

  async function testNewFunction() {
    let contextGroup = new InspectorTest.ContextGroup();
    let session = contextGroup.connect();
    let Protocol = session.Protocol;

    InspectorTest.log('Declare Foo & store it.');
    Protocol.Runtime.evaluate({expression: 'function Foo(){}'});
    let {result:{result:{objectId}}} = await Protocol.Runtime.evaluate({
      expression: 'Foo.prototype'
    });

    for (let i = 0; i < 2; ++i) {
      InspectorTest.log('Create object using Foo.');
      Protocol.Runtime.evaluate({expression: 'new Foo()'});
      await queryObjects(session, objectId, 'Foo');
    }
    session.disconnect();
  },

  async function testNonInspectable() {
    let contextGroup = new InspectorTest.ContextGroup();
    let session = contextGroup.connect();
    let Protocol = session.Protocol;

    InspectorTest.log('Declare Foo & store it.');
    Protocol.Runtime.evaluate({expression: 'function Foo(){}'});
    let {result:{result:{objectId}}} = await Protocol.Runtime.evaluate({
      expression: 'Foo.prototype'
    });

    InspectorTest.log('Create object using Foo.');
    Protocol.Runtime.evaluate({expression: 'a = new Foo()'});
    await queryObjects(session, objectId, 'Foo');
    InspectorTest.log('Mark object as not inspectable.')
    Protocol.Runtime.evaluate({expression: 'inspector.markObjectAsNotInspectable(a)'});
    await queryObjects(session, objectId, 'Foo');
    session.disconnect();
  },

  async function testObjectCreate() {
    let contextGroup = new InspectorTest.ContextGroup();
    let session = contextGroup.connect();
    let Protocol = session.Protocol;

    InspectorTest.log('Declare Object p & store it.');
    let {result:{result:{objectId}}} = await Protocol.Runtime.evaluate({
      expression: 'p = {a:1}'
    });
    for (let i = 0; i < 2; ++i) {
      InspectorTest.log('Create object using Object.create(p).');
      Protocol.Runtime.evaluate({expression: 'Object.create(p)'});
      await queryObjects(session, objectId, 'p');
    }
    session.disconnect();
  }
]);

const constructorsNameFunction = `
function() {
  return this.map(o => o.constructor.name + ',' + typeof o).sort();
}`;

async function queryObjects(sesion, prototypeObjectId, name) {
  let {result:{objects}} = await sesion.Protocol.Runtime.queryObjects({
    prototypeObjectId
  });
  InspectorTest.log(`Query objects with ${name} prototype.`);
  let {result:{result:{value}}} = await sesion.Protocol.Runtime.callFunctionOn({
    objectId: objects.objectId,
    functionDeclaration: constructorsNameFunction,
    returnByValue: true
  });
  InspectorTest.log('Dump each object constructor name.');
  InspectorTest.logMessage(value);
}