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How to use stepSuffix method in Playwright Internal

Best JavaScript code snippet using playwright-internal

base.js

...187}188function relativeTestPath(config, test) {189  return _path.default.relative(config.rootDir, test.location.file) || _path.default.basename(test.location.file);190}191function stepSuffix(step) {192  const stepTitles = step ? step.titlePath() : [];193  return stepTitles.map(t => ' âº ' + t).join('');194}195function formatTestTitle(config, test, step) {196  // root, project, file, ...describes, test197  const [, projectName,, ...titles] = test.titlePath();198  const location = `${relativeTestPath(config, test)}:${test.location.line}:${test.location.column}`;199  const projectTitle = projectName ? `[${projectName}] âº ` : '';200  return `${projectTitle}${location} âº ${titles.join(' ')}${stepSuffix(step)}`;201}202function formatTestHeader(config, test, indent, index) {203  const title = formatTestTitle(config, test);204  const passedUnexpectedlySuffix = test.results[0].status === 'passed' && test.expectedStatus === 'failed' ? ' -- passed unexpectedly' : '';205  const header = `${indent}${index ? index + ') ' : ''}${title}${passedUnexpectedlySuffix}`;206  return _safe.default.red(pad(header, '='));207}208function formatError(error, file) {209  const stack = error.stack;210  const tokens = [];211  if (stack) {212    tokens.push('');213    const message = error.message || '';214    const messageLocation = stack.indexOf(message);...

playwright-formatters.js

Source: playwright-formatters.js

...102    const title = formatTestTitle(config, test);103    const header = `${indent}${index ? index + ") " : ""}${title}`;104    return pad(header, "=");105}106function stepSuffix(step) {107    const stepTitles = step ? step.titlePath() : [];108    return stepTitles.map((t) => " âº " + t).join("");109}110function relativeTestPath(config, test) {111    return relative(config.rootDir, test.location.file) || _path.default.basename(test.location.file);112}113function formatResultFailure(test, result, initialIndent, highlightCode) {114    var _error;115    const resultTokens = [];116    if (result.status === "timedOut") {117        resultTokens.push("");118        resultTokens.push(indent(red(`Timeout of ${test.timeout}ms exceeded.`), initialIndent));119    }120    if (result.status === "passed" && test.expectedStatus === "failed") {121        resultTokens.push("");122        resultTokens.push(indent(red(`Expected to fail, but passed.`), initialIndent));123    }124    let error = undefined;125    if (result.error !== undefined) {126        error = formatError(result.error, highlightCode, test.location.file);127        resultTokens.push(indent(error.message, initialIndent));128    }129    return {130        tokens: resultTokens,131        position: (_error = error) === null || _error === void 0 ? void 0 : _error.position,132    };133}134function formatTestTitle(config, test, step) {135    // root, project, file, ...describes, test136    const [, projectName, , ...titles] = test.titlePath();137    const location = `${relativeTestPath(config, test)}:${test.location.line}:${test.location.column}`;138    const projectTitle = projectName ? `[${projectName}] âº ` : "";139    return `${projectTitle}${location} âº ${titles.join(" âº ")}${stepSuffix(step)}`;140}141function formatFailure(config, test, options = {}) {142    const { index, includeStdio, includeAttachments = true, filePath } = options;143    const lines = [];144    const title = formatTestTitle(config, test);145    const annotations = [];146    const header = formatTestHeader(config, test, "  ", index);147    lines.push(red(header));148    for (const result of test.results) {149        const resultLines = [];150        const { tokens: resultTokens, position } = formatResultFailure(test, result, "    ", enabled);151        if (!resultTokens.length) continue;152        if (result.retry) {153            resultLines.push("");...

step.js

Source: step.js

...63  }64  set indexShow(value) {65    this.setAttribute("indexShow", value);66  }67  get stepSuffix() {68    return this.getAttribute("stepSuffix");69  }70  set stepSuffix(value) {71    this.setAttribute("stepSuffix", value);72  }73  static get observedAttributes() {74    return ["text", "stepPrefix", "stepSuffix", "indexShow"];75  }76  attributeChangedCallback() {77    this.render();78  }79  render() {80    function getParentAttr(attrName, This) {81      if (This.parentNode.tagName === "LISTBOX") {82        let attrVal = This.parentNode.getAttribute(attrName);83        if (attrVal === "null") {84          attrVal = null;...

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.stepSuffix('test');7  await page.screenshot({ path: `example.png` });8  await browser.close();9})();10![example.png](example.png)

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  await page.stepSuffix('my-step');6  await browser.close();7})();8### `page.stepSuffix(suffix)`9[MIT](LICENSE)

Using AI Code Generation

1const { stepSuffix } = require('@playwright/test/lib/test');2const { test, expect } = require('@playwright/test');3test('should work', async ({ page }) => {4  const title = await page.title();5  expect(title).toBe('Playwright');6  await page.click('text=Get started');7  await page.click('text=Docs');8  await page.click('text=API');9  await page.click('text=BrowserContext');10  await page.click('text=close');11  await page.click('text=BrowserType');12  await page.click('text=launch');13  await page.click('text=Browser');14  await page.click('text=close');15  await page.click('text=Page');16  await page.click('text=close');17  await page.click('text=Selectors');18  await page.click('text=Playwright');19  await page.click('text=Locator');20  await page.click('text=Page');21  await page.click('text=BrowserContext');22  await page.click('text=Browser');23  await page.click('text=BrowserType');24  await page.click('text=Selectors');25  await page.click('text=Locator');26  await page.click('text=ElementHandle');27  await page.click('text=JSHandle');28  await page.click('text=API');29  await page.click('text=Docs');30  await page.click('text=Get started');31  await page.click('text=Blog');32  await page.click('text=GitHub');33  await page.click('text=Twitter');34  await page.click('text=Slack');35  await page.click('text=YouTube');36  await page.click('text=Playwright');37  await page.click('text=Docs');38  await page.click('text=API');39  await page.click('text=BrowserContext');40  await page.click('text=close');41  await page.click('text=BrowserType');42  await page.click('text=launch');43  await page.click('text=Browser');44  await page.click('text=close');45  await page.click('text=Page');46  await page.click('text=close');47  await page.click('text=Selectors');48  await page.click('text=Playwright');49  await page.click('text=Locator');50  await page.click('text=Page');51  await page.click('text=BrowserContext');

Using AI Code Generation

1const { stepSuffix } = require('@playwright/test/lib/utils');2const { test, expect } = require('@playwright/test');3test('test', async ({ page }) => {4  const title = page.locator('text=Playwright');5  expect(title).toHaveText('Playwright');6  await title.dblclick();7  await page.waitForTimeout(3000);8});9import { stepSuffix } from '@playwright/test/lib/utils';10import { test, expect } from '@playwright/test';11test('test', async ({ page }) => {12  const title = page.locator('text=Playwright');13  expect(title).toHaveText('Playwright');14  await title.dblclick();15  await page.waitForTimeout(3000);16});17const { test } = require('@playwright/test');18test.beforeAll(async ({ browser }) => {19  console.log('Before all tests');20});21test.beforeEach(async ({ browser }) => {22  console.log('Before each test');23});24test.afterEach(async ({ browser }) => {25  console.log('After each test');26});27test.afterAll(async ({ browser }) => {28  console.log('After all tests');29});30test('test', async ({ page }) => {31  const title = page.locator('text=Playwright');32  expect(title).toHaveText('Playwright');33  await title.dblclick();34  await page.waitForTimeout(3000);35});36import { test } from '@playwright/test';37test.beforeAll(async ({ browser }) => {38  console.log('Before all tests');39});40test.beforeEach(async ({ browser }) => {41  console.log('Before each test');42});43test.afterEach(async ({ browser }) =>

Using AI Code Generation

1const { stepSuffix } = require('@playwright/test');2stepSuffix('suffix');3const { test } = require('@playwright/test');4test('my test', async ({ page }) => {5});6### `test.beforeAll(callback)`7const { test } = require('@playwright/test');8test.beforeAll(async ({ browser }) => {9  const context = await browser.newContext();10  const page = await context.newPage();11  test.state.context = context;12  test.state.page = page;13});14test('my test', async ({ page }) => {15});16test.afterAll(async ({ browser }) => {17  await test.state.context.close();18});19### `test.afterAll(callback)`20const { test } = require('@playwright/test');21test.beforeAll(async ({ browser }) => {22  const context = await browser.newContext();23  const page = await context.newPage();24  test.state.context = context;25  test.state.page = page;26});27test('my test', async ({ page }) => {28});29test.afterAll(async ({ browser }) => {30  await test.state.context.close();31});32### `test.beforeEach(callback)`

Using AI Code Generation

1const { test, expect } = require('@playwright/test');2const { stepSuffix } = require('@playwright/test/lib/test');3test('test', async ({ page }) => {4  const userAgent = await page.innerText('.useragent');5  console.log(userAgent);6  expect(userAgent).toContain('Chrome');7  await page.screenshot({ path: `example${stepSuffix('screenshot')}.png` });8});

Using AI Code Generation

1const { stepSuffix } = require('@playwright/test');2console.log(stepSuffix('Hello World'));3const { test } = require('@playwright/test');4test('My test', async ({ page }) => {5  const { stepSuffix } = require('@playwright/test');6  console.log(stepSuffix('Hello World'));7});8const { stepTitle } = require('@playwright/test');9console.log(stepTitle('Hello World'));10const { test } = require('@playwright/test');11test('My test', async ({ page }) => {12  const { stepTitle } = require('@playwright/test');13  console.log(stepTitle('Hello World'));14});15const { step } = require('@playwright/test');16console.log(step('Hello World'));17const { test } = require('@playwright/test');18test('My test', async ({ page }) => {19  const { step } = require('@playwright/test');20  console.log(step('Hello World'));21});22const { TestInfo } = require('@playwright/test');23console.log(TestInfo);24const { test } = require('@playwright/test');25test('My test', async ({ page }) => {

StackOverFlow community discussions

Questions

Discussion

Is it possible to get the selector from a locator object in playwright?

How to run a list of test suites in a single file concurrently in jest?

Running Playwright in Azure Function

Jest + Playwright - Test callbacks of event-based DOM library

firefox browser does not start in playwright

Well this is one way, but not sure if it will work for all possible locators!.

// Get a selector from a playwright locator
import { Locator } from "@playwright/test";
export function extractSelector(locator: Locator) {
    const selector = locator.toString();
    const parts = selector.split("@");
    if (parts.length !== 2) { throw Error("extractSelector: susupect that this is not a locator"); }
    if (parts[0] !== "Locator") { throw Error("extractSelector: did not find locator"); }
    return parts[1];
}

https://stackoverflow.com/questions/72044959/is-it-possible-to-get-the-selector-from-a-locator-object-in-playwright

Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????

There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.

To my knowledge there is no way to force jest to run in parallel.

Aside

Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.

// parallel
test.describe.parallel('group', () => {
  test('runs in parallel 1', async ({ page }) => {});
  test('runs in parallel 2', async ({ page }) => {});
});

// serial
test.describe.serial('group', () => {
  test('runs first', async ({ page }) => {});
  test('runs second', async ({ page }) => {});
});

https://stackoverflow.com/questions/73497773/how-to-run-a-list-of-test-suites-in-a-single-file-concurrently-in-jest

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})

https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

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