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 utils = require('./utils');
  
  /**
   * @type {PageTestSuite}
   */
  module.exports.describe = function({testRunner, expect, product, playwright, FFOX, CHROMIUM, WEBKIT}) {
    const {describe, xdescribe, fdescribe} = testRunner;
    const {it, fit, xit, dit} = testRunner;
    const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;
  
    describe('Page.waitFor', function() {
      it('should wait for selector', async({page, server}) => {
        let found = false;
        const waitFor = page.waitFor('div').then(() => found = true);
        await page.goto(server.EMPTY_PAGE);
        expect(found).toBe(false);
        await page.goto(server.PREFIX + '/grid.html');
        await waitFor;
        expect(found).toBe(true);
      });
      it('should wait for an xpath', async({page, server}) => {
        let found = false;
        const waitFor = page.waitFor('//div').then(() => found = true);
        await page.goto(server.EMPTY_PAGE);
        expect(found).toBe(false);
        await page.goto(server.PREFIX + '/grid.html');
        await waitFor;
        expect(found).toBe(true);
      });
      it('should not allow you to select an element with single slash xpath', async({page, server}) => {
        await page.setContent(`<div>some text</div>`);
        let error = null;
        await page.waitFor('/html/body/div').catch(e => error = e);
        expect(error).toBeTruthy();
      });
      it('should timeout', async({page, server}) => {
        const startTime = Date.now();
        const timeout = 42;
        await page.waitFor(timeout);
        expect(Date.now() - startTime).not.toBeLessThan(timeout / 2);
      });
      it('should work with multiline body', async({page, server}) => {
        const result = await page.waitForFunction(`
          (() => true)()
        `);
        expect(await result.jsonValue()).toBe(true);
      });
      it('should wait for predicate', async({page, server}) => {
        await Promise.all([
          page.waitFor(() => window.innerWidth < 130), // Windows doesn't like windows below 120px wide
          page.setViewportSize({width: 10, height: 10}),
        ]);
      });
      it('should throw when unknown type', async({page, server}) => {
        let error = null;
        await page.waitFor({foo: 'bar'}).catch(e => error = e);
        expect(error.message).toContain('Unsupported target type');
      });
      it('should wait for predicate with arguments', async({page, server}) => {
        await page.waitFor((arg1, arg2) => arg1 !== arg2, {}, 1, 2);
      });
    });
  
    describe('Frame.waitForFunction', function() {
      it('should accept a string', async({page, server}) => {
        const watchdog = page.waitForFunction('window.__FOO === 1');
        await page.evaluate(() => window.__FOO = 1);
        await watchdog;
      });
      it('should work when resolved right before execution context disposal', async({page, server}) => {
        // FIXME: implement Page.addScriptToEvaluateOnNewDocument in WebKit.
        await page.evaluateOnNewDocument(() => window.__RELOADED = true);
        await page.waitForFunction(() => {
          if (!window.__RELOADED)
            window.location.reload();
          return true;
        });
      });
      it('should poll on interval', async({page, server}) => {
        const polling = 100;
        const timeDelta = await page.waitForFunction(() => {
          if (!window.__startTime) {
            window.__startTime = Date.now();
            return false;
          }
          return Date.now() - window.__startTime;
        }, {polling});
        expect(timeDelta).not.toBeLessThan(polling);
      });
      it('should poll on mutation', async({page, server}) => {
        let success = false;
        const watchdog = page.waitForFunction(() => window.__FOO === 'hit', {polling: 'mutation'})
            .then(() => success = true);
        await page.evaluate(() => window.__FOO = 'hit');
        expect(success).toBe(false);
        await page.evaluate(() => document.body.appendChild(document.createElement('div')));
        await watchdog;
      });
      it('should poll on raf', async({page, server}) => {
        const watchdog = page.waitForFunction(() => window.__FOO === 'hit', {polling: 'raf'});
        await page.evaluate(() => window.__FOO = 'hit');
        await watchdog;
      });
      it.skip(FFOX)('should work with strict CSP policy', async({page, server}) => {
        server.setCSP('/empty.html', 'script-src ' + server.PREFIX);
        await page.goto(server.EMPTY_PAGE);
        let error = null;
        await Promise.all([
          page.waitForFunction(() => window.__FOO === 'hit', {polling: 'raf'}).catch(e => error = e),
          page.evaluate(() => window.__FOO = 'hit')
        ]);
        expect(error).toBe(null);
      });
      it('should throw on bad polling value', async({page, server}) => {
        let error = null;
        try {
          await page.waitForFunction(() => !!document.body, {polling: 'unknown'});
        } catch (e) {
          error = e;
        }
        expect(error).toBeTruthy();
        expect(error.message).toContain('polling');
      });
      it('should throw negative polling interval', async({page, server}) => {
        let error = null;
        try {
          await page.waitForFunction(() => !!document.body, {polling: -10});
        } catch (e) {
          error = e;
        }
        expect(error).toBeTruthy();
        expect(error.message).toContain('Cannot poll with non-positive interval');
      });
      it('should return the success value as a JSHandle', async({page}) => {
        expect(await (await page.waitForFunction(() => 5)).jsonValue()).toBe(5);
      });
      it('should return the window as a success value', async({ page }) => {
        expect(await page.waitForFunction(() => window)).toBeTruthy();
      });
      it('should accept ElementHandle arguments', async({page}) => {
        await page.setContent('<div></div>');
        const div = await page.$('div');
        let resolved = false;
        const waitForFunction = page.waitForFunction(element => !element.parentElement, {}, div).then(() => resolved = true);
        expect(resolved).toBe(false);
        await page.evaluate(element => element.remove(), div);
        await waitForFunction;
      });
      it('should respect timeout', async({page}) => {
        let error = null;
        await page.waitForFunction('false', {timeout: 10}).catch(e => error = e);
        expect(error).toBeTruthy();
        expect(error.message).toContain('waiting for function failed: timeout');
        expect(error).toBeInstanceOf(playwright.errors.TimeoutError);
      });
      it('should respect default timeout', async({page}) => {
        page.setDefaultTimeout(1);
        let error = null;
        await page.waitForFunction('false').catch(e => error = e);
        expect(error).toBeInstanceOf(playwright.errors.TimeoutError);
        expect(error.message).toContain('waiting for function failed: timeout');
      });
      it('should disable timeout when its set to 0', async({page}) => {
        const watchdog = page.waitForFunction(() => {
          window.__counter = (window.__counter || 0) + 1;
          return window.__injected;
        }, {timeout: 0, polling: 10});
        await page.waitForFunction(() => window.__counter > 10);
        await page.evaluate(() => window.__injected = true);
        await watchdog;
      });
      it('should survive cross-process navigation', async({page, server}) => {
        let fooFound = false;
        const waitForFunction = page.waitForFunction('window.__FOO === 1').then(() => fooFound = true);
        await page.goto(server.EMPTY_PAGE);
        expect(fooFound).toBe(false);
        await page.reload();
        expect(fooFound).toBe(false);
        await page.goto(server.CROSS_PROCESS_PREFIX + '/grid.html');
        expect(fooFound).toBe(false);
        await page.evaluate(() => window.__FOO = 1);
        await waitForFunction;
        expect(fooFound).toBe(true);
      });
      it('should survive navigations', async({page, server}) => {
        const watchdog = page.waitForFunction(() => window.__done);
        await page.goto(server.EMPTY_PAGE);
        await page.goto(server.PREFIX + '/consolelog.html');
        await page.evaluate(() => window.__done = true);
        await watchdog;
      });
    });
  
    describe('Frame.waitForSelector', function() {
      const addElement = tag => document.body.appendChild(document.createElement(tag));
      it('should immediately resolve promise if node exists', async({page, server}) => {
        await page.goto(server.EMPTY_PAGE);
        const frame = page.mainFrame();
        await frame.waitForSelector('*');
        await frame.evaluate(addElement, 'div');
        await frame.waitForSelector('div');
      });
      it('should work with removed MutationObserver', async({page, server}) => {
        await page.evaluate(() => delete window.MutationObserver);
        const [handle] = await Promise.all([
          page.waitForSelector('.zombo'),
          page.setContent(`<div class='zombo'>anything</div>`),
        ]);
        expect(await page.evaluate(x => x.textContent, handle)).toBe('anything');
      });
      it('should resolve promise when node is added', async({page, server}) => {
        await page.goto(server.EMPTY_PAGE);
        const frame = page.mainFrame();
        const watchdog = frame.waitForSelector('div');
        await frame.evaluate(addElement, 'br');
        await frame.evaluate(addElement, 'div');
        const eHandle = await watchdog;
        const tagName = await eHandle.getProperty('tagName').then(e => e.jsonValue());
        expect(tagName).toBe('DIV');
      });
      it('should work when node is added through innerHTML', async({page, server}) => {
        await page.goto(server.EMPTY_PAGE);
        const watchdog = page.waitForSelector('h3 div');
        await page.evaluate(addElement, 'span');
        await page.evaluate(() => document.querySelector('span').innerHTML = '<h3><div></div></h3>');
        await watchdog;
      });
      it('Page.$ waitFor is shortcut for main frame', async({page, server}) => {
        await page.goto(server.EMPTY_PAGE);
        await utils.attachFrame(page, 'frame1', server.EMPTY_PAGE);
        const otherFrame = page.frames()[1];
        const watchdog = page.waitForSelector('div');
        await otherFrame.evaluate(addElement, 'div');
        await page.evaluate(addElement, 'div');
        const eHandle = await watchdog;
        expect(await eHandle.ownerFrame()).toBe(page.mainFrame());
      });
      it('should run in specified frame', async({page, server}) => {
        await utils.attachFrame(page, 'frame1', server.EMPTY_PAGE);
        await utils.attachFrame(page, 'frame2', server.EMPTY_PAGE);
        const frame1 = page.frames()[1];
        const frame2 = page.frames()[2];
        const waitForSelectorPromise = frame2.waitForSelector('div');
        await frame1.evaluate(addElement, 'div');
        await frame2.evaluate(addElement, 'div');
        const eHandle = await waitForSelectorPromise;
        expect(await eHandle.ownerFrame()).toBe(frame2);
      });
      it('should throw when frame is detached', async({page, server}) => {
        await utils.attachFrame(page, 'frame1', server.EMPTY_PAGE);
        const frame = page.frames()[1];
        let waitError = null;
        const waitPromise = frame.waitForSelector('.box').catch(e => waitError = e);
        await utils.detachFrame(page, 'frame1');
        await waitPromise;
        expect(waitError).toBeTruthy();
        expect(waitError.message).toContain('waitForFunction failed: frame got detached.');
      });
      it('should survive cross-process navigation', async({page, server}) => {
        let boxFound = false;
        const waitForSelector = page.waitForSelector('.box').then(() => boxFound = true);
        await page.goto(server.EMPTY_PAGE);
        expect(boxFound).toBe(false);
        await page.reload();
        expect(boxFound).toBe(false);
        await page.goto(server.CROSS_PROCESS_PREFIX + '/grid.html');
        await waitForSelector;
        expect(boxFound).toBe(true);
      });
      it('should wait for visible', async({page, server}) => {
        let divFound = false;
        const waitForSelector = page.waitForSelector('div').then(() => divFound = true);
        await page.setContent(`<div style='display: none; visibility: hidden;'>1</div>`);
        expect(divFound).toBe(false);
        await page.evaluate(() => document.querySelector('div').style.removeProperty('display'));
        expect(divFound).toBe(false);
        await page.evaluate(() => document.querySelector('div').style.removeProperty('visibility'));
        expect(await waitForSelector).toBe(true);
        expect(divFound).toBe(true);
      });
      it('should wait for visible recursively', async({page, server}) => {
        let divVisible = false;
        const waitForSelector = page.waitForSelector('div#inner', { visibility: 'visible' }).then(() => divVisible = true);
        await page.setContent(`<div style='display: none; visibility: hidden;'><div id="inner">hi</div></div>`);
        expect(divVisible).toBe(false);
        await page.evaluate(() => document.querySelector('div').style.removeProperty('display'));
        expect(divVisible).toBe(false);
        await page.evaluate(() => document.querySelector('div').style.removeProperty('visibility'));
        expect(await waitForSelector).toBe(true);
        expect(divVisible).toBe(true);
      });
      it('hidden should wait for visibility: hidden', async({page, server}) => {
        let divHidden = false;
        await page.setContent(`<div style='display: block;'></div>`);
        const waitForSelector = page.waitForSelector('div', { visibility: 'hidden' }).then(() => divHidden = true);
        await page.waitForSelector('div'); // do a round trip
        expect(divHidden).toBe(false);
        await page.evaluate(() => document.querySelector('div').style.setProperty('visibility', 'hidden'));
        expect(await waitForSelector).toBe(true);
        expect(divHidden).toBe(true);
      });
      it('hidden should wait for display: none', async({page, server}) => {
        let divHidden = false;
        await page.setContent(`<div style='display: block;'></div>`);
        const waitForSelector = page.waitForSelector('div', { visibility: 'hidden' }).then(() => divHidden = true);
        await page.waitForSelector('div'); // do a round trip
        expect(divHidden).toBe(false);
        await page.evaluate(() => document.querySelector('div').style.setProperty('display', 'none'));
        expect(await waitForSelector).toBe(true);
        expect(divHidden).toBe(true);
      });
      it('hidden should wait for removal', async({page, server}) => {
        await page.setContent(`<div></div>`);
        let divRemoved = false;
        const waitForSelector = page.waitForSelector('div', { visibility: 'hidden' }).then(() => divRemoved = true);
        await page.waitForSelector('div'); // do a round trip
        expect(divRemoved).toBe(false);
        await page.evaluate(() => document.querySelector('div').remove());
        expect(await waitForSelector).toBe(true);
        expect(divRemoved).toBe(true);
      });
      it('should return null if waiting to hide non-existing element', async({page, server}) => {
        const handle = await page.waitForSelector('non-existing', { visibility: 'hidden' });
        expect(handle).toBe(null);
      });
      it('should respect timeout', async({page, server}) => {
        let error = null;
        await page.waitForSelector('div', { timeout: 10 }).catch(e => error = e);
        expect(error).toBeTruthy();
        expect(error.message).toContain('waiting for selector "div" failed: timeout');
        expect(error).toBeInstanceOf(playwright.errors.TimeoutError);
      });
      it('should have an error message specifically for awaiting an element to be hidden', async({page, server}) => {
        await page.setContent(`<div></div>`);
        let error = null;
        await page.waitForSelector('div', { visibility: 'hidden', timeout: 10 }).catch(e => error = e);
        expect(error).toBeTruthy();
        expect(error.message).toContain('waiting for selector "[hidden] div" failed: timeout');
      });
      it('should respond to node attribute mutation', async({page, server}) => {
        let divFound = false;
        const waitForSelector = page.waitForSelector('.zombo').then(() => divFound = true);
        await page.setContent(`<div class='notZombo'></div>`);
        expect(divFound).toBe(false);
        await page.evaluate(() => document.querySelector('div').className = 'zombo');
        expect(await waitForSelector).toBe(true);
      });
      it('should return the element handle', async({page, server}) => {
        const waitForSelector = page.waitForSelector('.zombo');
        await page.setContent(`<div class='zombo'>anything</div>`);
        expect(await page.evaluate(x => x.textContent, await waitForSelector)).toBe('anything');
      });
      it('should have correct stack trace for timeout', async({page, server}) => {
        let error;
        await page.waitForSelector('.zombo', { timeout: 10 }).catch(e => error = e);
        expect(error.stack).toContain('waittask.spec.js');
      });
      it('should throw for unknown waitFor option', async({page, server}) => {
        await page.setContent('<section>test</section>');
        const error = await page.waitForSelector('section', { visibility: 'foo' }).catch(e => e);
        expect(error.message).toContain('Unsupported waitFor option');
      });
      it('should throw for numeric waitFor option', async({page, server}) => {
        await page.setContent('<section>test</section>');
        const error = await page.waitForSelector('section', { visibility: 123 }).catch(e => e);
        expect(error.message).toContain('Unsupported waitFor option');
      });
      it('should throw for true waitFor option', async({page, server}) => {
        await page.setContent('<section>test</section>');
        const error = await page.waitForSelector('section', { visibility: true }).catch(e => e);
        expect(error.message).toContain('Unsupported waitFor option');
      });
      it('should throw for false waitFor option', async({page, server}) => {
        await page.setContent('<section>test</section>');
        const error = await page.waitForSelector('section', { visibility: false }).catch(e => e);
        expect(error.message).toContain('Unsupported waitFor option');
      });
      it('should support >> selector syntax', async({page, server}) => {
        await page.goto(server.EMPTY_PAGE);
        const frame = page.mainFrame();
        const watchdog = frame.waitForSelector('css=div >> css=span');
        await frame.evaluate(addElement, 'br');
        await frame.evaluate(addElement, 'div');
        await frame.evaluate(() => document.querySelector('div').appendChild(document.createElement('span')));
        const eHandle = await watchdog;
        const tagName = await eHandle.getProperty('tagName').then(e => e.jsonValue());
        expect(tagName).toBe('SPAN');
      });
      it('$wait alias should work', async({page, server}) => {
        await page.setContent('<section>test</section>');
        const handle = await page.$wait('section');
        expect(await handle.evaluate(e => e.textContent)).toBe('test');
      });
    });
  
    describe('Frame.waitForSelector xpath', function() {
      const addElement = tag => document.body.appendChild(document.createElement(tag));
  
      it('should support some fancy xpath', async({page, server}) => {
        await page.setContent(`<p>red herring</p><p>hello  world  </p>`);
        const waitForXPath = page.waitForSelector('//p[normalize-space(.)="hello world"]');
        expect(await page.evaluate(x => x.textContent, await waitForXPath)).toBe('hello  world  ');
      });
      it('should respect timeout', async({page}) => {
        let error = null;
        await page.waitForSelector('//div', { timeout: 10 }).catch(e => error = e);
        expect(error).toBeTruthy();
        expect(error.message).toContain('waiting for selector "//div" failed: timeout');
        expect(error).toBeInstanceOf(playwright.errors.TimeoutError);
      });
      it('should run in specified frame', async({page, server}) => {
        await utils.attachFrame(page, 'frame1', server.EMPTY_PAGE);
        await utils.attachFrame(page, 'frame2', server.EMPTY_PAGE);
        const frame1 = page.frames()[1];
        const frame2 = page.frames()[2];
        const waitForXPathPromise = frame2.waitForSelector('//div');
        await frame1.evaluate(addElement, 'div');
        await frame2.evaluate(addElement, 'div');
        const eHandle = await waitForXPathPromise;
        expect(await eHandle.ownerFrame()).toBe(frame2);
      });
      it('should throw when frame is detached', async({page, server}) => {
        await utils.attachFrame(page, 'frame1', server.EMPTY_PAGE);
        const frame = page.frames()[1];
        let waitError = null;
        const waitPromise = frame.waitForSelector('//*[@class="box"]').catch(e => waitError = e);
        await utils.detachFrame(page, 'frame1');
        await waitPromise;
        expect(waitError).toBeTruthy();
        expect(waitError.message).toContain('waitForFunction failed: frame got detached.');
      });
      it('should return the element handle', async({page, server}) => {
        const waitForXPath = page.waitForSelector('//*[@class="zombo"]');
        await page.setContent(`<div class='zombo'>anything</div>`);
        expect(await page.evaluate(x => x.textContent, await waitForXPath)).toBe('anything');
      });
      it('should allow you to select an element with single slash', async({page, server}) => {
        await page.setContent(`<div>some text</div>`);
        const waitForXPath = page.waitForSelector('//html/body/div');
        expect(await page.evaluate(x => x.textContent, await waitForXPath)).toBe('some text');
      });
    });
  
  };
  