Jest reporter

Jest test results processor for generating a summary in HTML

Installation

---

1  npm install jest-html-reporters --save-dev

Usage

---

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

1"jest": {
2  ...,
3  "reporters": [
4    "default",
5    "jest-html-reporters"
6  ],
7  ...
8}
9

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	env variables name	Type	Default	Description
publicPath	JEST_HTML_REPORTERS_PUBLIC_PATH	string	''	specify the base path
filename	JEST_HTML_REPORTERS_FILE_NAME	string	jest_html_reporters.html	Filename of saved report Applies to the generated html
expand	JEST_HTML_REPORTERS_EXPAND	Boolean	false	specify whether default expand all data
pageTitle	JEST_HTML_REPORTERS_PAGE_TITLE	string	Report	specify header and page title
logoImgPath	JEST_HTML_REPORTERS_LOGO_IMG_PATH	string	undefined	specify path of the image that will be displayed to the right of page title
hideIcon	JEST_HTML_REPORTERS_HIDE_ICON	boolean	false	hide default icon
customInfos	JEST_HTML_REPORTERS_CUSTOM_INFOS	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
testCommand	JEST_HTML_REPORTERS_TEST_COMMAND	string	"npx jest"	copy command content to quickly run test file
openReport	JEST_HTML_REPORTERS_OPEN_REPORT	json	in dev=true, rest=false	options for npm package open
env variable support only	JEST_HTML_REPORTERS_TEMP_DIR_PATH	string	system default temporary directory	path to a temporary folder with attachments
failureMessageOnly	JEST_HTML_REPORTERS_FAILURE_MESSAGE_ONLY	boolean	false	show failure test suites messages only in HTML report
enableMergeData	JEST_HTML_REPORTERS_ENABLE_MERGE_DATA	boolean	false	for default enable merge test data feature
dataMergeLevel	JEST_HTML_REPORTERS_DATA_MERGE_LEVEL	number	1	default merge test data level
inlineSource	JEST_HTML_REPORTERS_INLINE_SOURCE	boolean	false	Option to save report in a single combined HTML file #184

---

example add config options

1...,
2"reporters": [
3  "default",
4  ["jest-html-reporters", {
5    "publicPath": "./html-report",
6    "filename": "report.html",
7    "openReport": true
8  }]
9]

---

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

• Attach screenshot to report

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

interface IAddAttachParams {
    attach: string | Buffer;
    description: string;
    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 this.global).

Here is an Example with puppeteer.

1// Example attach with **buffer**
2const { addAttach } = require("jest-html-reporters/helper");
3const puppeteer = require("puppeteer");
4
5describe("just examples", () => {
6  test("test buffer", async () => {
7    const browser = await puppeteer.launch();
8    const page = await browser.newPage();
9    await page.goto("https://www.google.com");
10    const data = await page.screenshot();
11    await browser.close();
12    await addAttach({
13      attach: data,
14      description: 'img 1',
15    });
16    await addAttach({
17      attach: await fs.readFileSync('./test.mp4'),
18      description: 'img 1',
19      bufferFormat: 'mp4',
20    });
21    expect(1).toBe(1);
22  });
23});

1// Example attach with **string**
2const { addAttach } = require("jest-html-reporters/helper");
3const puppeteer = require("puppeteer");
4const path = require("path");
5
6describe("just examples", () => {
7  test("case string", async () => {
8    const filePath = path.resolve(__dirname, "./test.jpg");
9    await browser.close();
10    await addAttach({
11      attach: filePath,
12      description: 'test google 2',
13    });
14
15    await addAttach({
16      attach: 'www.example.com/test.mp4',
17      description: 'test video 2',
18    });
19    expect(1).toBe(2);
20  });
21});

it will show like this

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

Only one parameter is required. If you stringify an object like this JSON.stringify(object, null, 2), the object will be prettified. context is an optional parameter. Here can be specified context (default is this.global).

Here is an Example with Nightmare.

1const { addAttach, addMsg } = require("jest-html-reporters/helper");
2const Nightmare = require("nightmare");
3
4describe("Yet another example", () => {
5  test("Both addAttach & addMsg with failure", async () => {
6    const nightmare = Nightmare({ show: true });
7    await addMsg({ message: JSON.stringify({ won: 1, too: 2 }, null, 2) });
8    await nightmare.goto("https://duckduckgo.com");
9    const s1 = await nightmare.screenshot();
10    await addAttach(s1, "test duckduckgo 1");
11    await nightmare.end();
12    await addMsg({ message: JSON.stringify(process, null, 2) });
13    expect(2).toEqual(1);
14  }, 20000);
15  test("addMsg with success", async () => {
16    await addMsg({ message: JSON.stringify({ free: 3, for: 4 }, null, 2) });
17    expect(2).toEqual(2);
18  });
19});

Message still displays without screenshots and with a successful test