text: /**
   * Copyright 2018 Google Inc. All rights reserved.
   * Modifications copyright (c) Microsoft Corporation.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  const {FFOX, CHROMIUM, WEBKIT} = testOptions;
  
  it('should work', async({page, server}) => {
    const windowHandle = await page.evaluateHandle(() => window);
    expect(windowHandle).toBeTruthy();
  });
  
  it('should accept object handle as an argument', async({page, server}) => {
    const navigatorHandle = await page.evaluateHandle(() => navigator);
    const text = await page.evaluate(e => e.userAgent, navigatorHandle);
    expect(text).toContain('Mozilla');
  });
  
  it('should accept object handle to primitive types', async({page, server}) => {
    const aHandle = await page.evaluateHandle(() => 5);
    const isFive = await page.evaluate(e => Object.is(e, 5), aHandle);
    expect(isFive).toBeTruthy();
  });
  
  it('should accept nested handle', async({page, server}) => {
    const foo = await page.evaluateHandle(() => ({ x: 1, y: 'foo' }));
    const result = await page.evaluate(({ foo }) => {
      return foo;
    }, { foo });
    expect(result).toEqual({ x: 1, y: 'foo' });
  });
  
  it('should accept nested window handle', async({page, server}) => {
    const foo = await page.evaluateHandle(() => window);
    const result = await page.evaluate(({ foo }) => {
      return foo === window;
    }, { foo });
    expect(result).toBe(true);
  });
  
  it('should accept multiple nested handles', async({page, server}) => {
    const foo = await page.evaluateHandle(() => ({ x: 1, y: 'foo' }));
    const bar = await page.evaluateHandle(() => 5);
    const baz = await page.evaluateHandle(() => (['baz']));
    const result = await page.evaluate(x => {
      return JSON.stringify(x);
    }, { a1: { foo }, a2: { bar, arr: [{ baz }] } });
    expect(JSON.parse(result)).toEqual({
      a1: { foo: { x: 1, y: 'foo' } },
      a2: { bar: 5, arr: [{ baz: ['baz'] }] }
    });
  });
  
  it('should throw for circular objects', async({page, server}) => {
    const a = { x: 1 };
    a.y = a;
    const error = await page.evaluate(x => x, a).catch(e => e);
    expect(error.message).toContain('Argument is a circular structure');
  });
  
  it('should accept same handle multiple times', async({page, server}) => {
    const foo = await page.evaluateHandle(() => 1);
    expect(await page.evaluate(x => x, { foo, bar: [foo], baz: { foo }})).toEqual({ foo: 1, bar: [1], baz: { foo: 1 } });
  });
  
  it('should accept same nested object multiple times', async({page, server}) => {
    const foo = { x: 1 };
    expect(await page.evaluate(x => x, { foo, bar: [foo], baz: { foo }})).toEqual({ foo: { x: 1 }, bar: [{ x : 1 }], baz: { foo: { x : 1 } } });
  });
  
  it('should accept object handle to unserializable value', async({page, server}) => {
    const aHandle = await page.evaluateHandle(() => Infinity);
    expect(await page.evaluate(e => Object.is(e, Infinity), aHandle)).toBe(true);
  });
  
  it('should pass configurable args', async({page, server}) => {
    const result = await page.evaluate(arg => {
      if (arg.foo !== 42)
        throw new Error('Not a 42');
      arg.foo = 17;
      if (arg.foo !== 17)
        throw new Error('Not 17');
      delete arg.foo;
      if (arg.foo === 17)
        throw new Error('Still 17');
      return arg;
    }, { foo: 42 });
    expect(result).toEqual({});
  });
  
  it('should work with primitives', async({page, server}) => {
    const aHandle = await page.evaluateHandle(() => {
      window.FOO = 123;
      return window;
    });
    expect(await page.evaluate(e => e.FOO, aHandle)).toBe(123);
  });
  