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3.1.7 • Public • Published

Jest reporter

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Jest test results processor for generating a summary in HTML

Example page

example picture


  # yarn
  yarn add jest-html-reporters --dev
  # npm
  npm install jest-html-reporters --save-dev


Configure Jest to process the test results by adding the following entry to the Jest config (jest.config.json):

"jest": {
  "reporters": [

As you run Jest from within the terminal, a file called jest_html_reporters.html will be created within your root folder containing information about your tests.

Available Options

The options below are specific to the reporter.

Option Name Type Default Description env variables name
publicPath string '' specify the base path JEST_HTML_REPORTERS_PUBLIC_PATH
filename string jest_html_reporters.html Filename of saved report
Applies to the generated html
includeConsoleLog boolean false set true to display console logs for each test suite. NOTE: the precondition is to run Jest with --verbose=false in order to catch all logs during the tests. JEST_HTML_REPORTERS_INCLUDE_CONSOLE_LOG
darkTheme boolean false set true to generate dark theme report page JEST_HTML_REPORTERS_DARK_THEME
failureMessageOnly number 0 0 : always create report.
1 : show failure test suites messages only in Report.
2 : only create report when some test suites failed.
inlineSource boolean false Option to save report in a single combined HTML file #184 JEST_HTML_REPORTERS_INLINE_SOURCE
pageTitle string Report specify header and page title JEST_HTML_REPORTERS_PAGE_TITLE
logoImgPath string undefined specify path of the image that will be displayed to the right of page title JEST_HTML_REPORTERS_LOGO_IMG_PATH
hideIcon boolean false hide default icon JEST_HTML_REPORTERS_HIDE_ICON
expand boolean false specify whether default expand all data JEST_HTML_REPORTERS_EXPAND
testCommand string "" copy command content to quickly run test file JEST_HTML_REPORTERS_TEST_COMMAND
openReport boolean in dev=true, rest=false options for npm package open JEST_HTML_REPORTERS_OPEN_REPORT
urlForTestFiles string '' url for test files. If user set this value, Details table shows an icon link to each rows. The link is constructed by joining urlForTestFiles and relativePath (like /src/utils/index.test.js) for each tests. See the detail in #221 JEST_HTML_REPORTERS_URL_FOR_TEST_FILES
customInfos array undefined show some custom data info in the report, example value [ {title: 'test1', value: 'test1'}, {title: 'test2', value: 'test2'}], you can also set value to a environment variable JEST_HTML_REPORTERS_CUSTOM_INFOS, see detail in #32 JEST_HTML_REPORTERS_CUSTOM_INFOS
enableMergeData boolean false for default enable merge test data feature JEST_HTML_REPORTERS_ENABLE_MERGE_DATA
dataMergeLevel number 1 default merge test data level JEST_HTML_REPORTERS_DATA_MERGE_LEVEL
env only string system default temporary directory path to a temporary folder with attachments JEST_HTML_REPORTERS_TEMP_DIR_PATH
stripSkippedTest boolean false skip the pending tests and suites in the final report JEST_HTML_REPORTERS_STRIP_SKIPPED_TEST

example add config options

"reporters": [
  ["jest-html-reporters", {
    "publicPath": "./html-report",
    "filename": "report.html",
    "openReport": true

some features.

  • Collapsable Test Groups

This feature regrading to #37, if a test file has many test cases, here will show a Merge Data checkbox on the expanded table. You can check it to merge data and set the merge level to control how to combine those data.

For Example merge data example

  • Attach screenshot to report

This feature regrading to #36, this package will a new method named addAttach.

interface IAddAttachParams {
    attach: string | Buffer;
    description: string | object;
    context: any;
    bufferFormat: string;

There are three params of this method, description is easy to understand. The param attach referring to the image, you can pass a buffer or string, if it was a buffer the package will help you create a dir named jest-html-reporters-attach and save that buffer as a jpg image in it under the publicPath. if you have already saved the image, just pass the image's path as the attach param. context is an optional parameter. Here can be specified context (default is

Here is an Example with puppeteer.

// Example attach with **buffer**
const { addAttach } = require("jest-html-reporters/helper");
const puppeteer = require("puppeteer");

describe("just examples", () => {
  test("test buffer", async () => {
    const browser = await puppeteer.launch();
    const page = await browser.newPage();
    await page.goto("");
    const data = await page.screenshot();
    await browser.close();
    await addAttach({
      attach: data,
      description: 'img 1',
    await addAttach({
      attach: await fs.readFileSync('./test.mp4'),
      description: 'img 1',
      bufferFormat: 'mp4',
// Example attach with **string**
const { addAttach } = require("jest-html-reporters/helper");
const puppeteer = require("puppeteer");
const path = require("path");

describe("just examples", () => {
  test("case string", async () => {
    const filePath = path.resolve(__dirname, "./test.jpg");
    await browser.close();
    await addAttach({
      attach: filePath,
      description: 'test google 2',

    await addAttach({
      attach: '',
      description: 'test video 2',

it will show like this example

  • Attach a message to the report

This feature is in regards to #63 & #64. It allows you to add a message or log something to the html report with addMsg()

 * @param {object} options - options object
 * @param {string | object} options.message - message string
 * @param {any} [options.context] - custom context (optional)
const addMsg = async ({ message, context }) => { ... }

Only one parameter is required. If you pass an serializable object like, it will auth using JSON.stringify(object, null, 2) to save the object and then prettified it in report. context is an optional parameter. Here can be specified context (default is

Here is an Example with Nightmare.

const { addAttach, addMsg } = require("jest-html-reporters/helper");
const Nightmare = require("nightmare");

describe("Yet another example", () => {
  test("Both addAttach & addMsg with failure", async () => {
    const nightmare = Nightmare({ show: true });
    await addMsg({ message: { won: 1, too: 2 } });
    await nightmare.goto("");
    const s1 = await nightmare.screenshot();
    await addAttach(s1, "test duckduckgo 1");
    await nightmare.end();
    await addMsg({ message: JSON.stringify(process, null, 2) });
  }, 20000);
  test("addMsg with success", async () => {
    await addMsg({ message: JSON.stringify({ free: 3, for: 4 }, null, 2) });


Message still displays without screenshots and with a successful test example

  • Show a link for each test file

If user set some value to urlForTestFiles, Details table shows an icon link to each rows. The link is constructed by joining urlForTestFiles (ex: and relativePath (ex: /src/utils/index.test.js) for each tests.

Details Table shows an icon link to each rows.

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