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Added Jest (unit tests are WIP)
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6 files changed

+146
-7
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6 files changed

+146
-7
lines changed

‎jest-puppeteer.config.js‎

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module.exports = {
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"launch": {
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"headless": "false"
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},
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"browserContext": "default"
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}

‎jest.config.js‎

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module.exports = {
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"preset": "jest-puppeteer",
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"verbose": true
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}

‎package.json‎

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@@ -4,11 +4,13 @@
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"description": "",
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1",
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"test": "jest",
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"format": "rome format --write --indent-style tab --line-width 160 --quote-style single index.js",
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"lint": "rome check index.js",
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"lint:fix": "rome check --apply-suggested index.js",
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"build": "esbuild index.js --bundle --outfile=index.min.js --minify --sourcemap"
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"lint": "rome check src/index.js",
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"lint:fix": "rome check --apply-suggested src/index.js",
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"build": "esbuild src/index.js --bundle --outfile=build/index.min.js --minify --sourcemap",
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"build:hot": "npm run build -- --watch",
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"start": "concurrently -n \"build,serve\" \"npm run build:hot\" \"npx serve build\""
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},
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"repository": {
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"type": "git",
@@ -22,6 +24,12 @@
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"license": "MIT",
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"dependencies": {
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"esbuild": "^0.16.13",
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"rome": "^11.0.0"
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"rome": "^11.0.0",
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"serve": "^14.1.2"
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},
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"devDependencies": {
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"concurrently": "^7.6.0",
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"jest": "^29.3.1",
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"jest-puppeteer": "^6.2.0"
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}
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}

index.js renamed to src/index.js

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@@ -267,6 +267,9 @@ function apply_custom_class(element, className) {
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function do_apply(element, selectors, classes, events, media_query) {
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if (media_query) {
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if ('(' !== media_query[0]) {
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media_query = `(${media_query})`;
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}
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if (!window.matchMedia(media_query).matches) {
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return;
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}
@@ -361,7 +364,7 @@ function do_apply(element, selectors, classes, events, media_query) {
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function init(document, event = undefined) {
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const tag_console = `init : ${event ? `(${event.type})` : ''}`;
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console.time(tag_console);
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console.log(event?.type);
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// console.log(event?.type);
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const elements = document.querySelectorAll('*:not(head, head *)[class]');
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@@ -374,7 +377,7 @@ function init(document, event = undefined) {
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}
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}
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const observer = new MutationObserver(init);
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const observer = new MutationObserver(init_observer);
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observer.observe(document, {
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attributes: true,
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attributeFilter: ['class'],
@@ -388,9 +391,28 @@ function init(document, event = undefined) {
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document.body.removeAttribute('hidden');
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}
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function init_observer(record) {
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console.time('init_observer');
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for (let i = 0; i < record.length; i++) {
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const { type, target, attributeName } = record[i];
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if (type === 'attributes' && attributeName === 'class') {
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apply_custom_class(target, target.className);
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}
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if (type === 'childList') {
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const elements = target.querySelectorAll('*:not(head, head *)[class]');
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for (let j = 0; j < elements.length; j++) {
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const element = elements[j];
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apply_custom_class(element, element.className);
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}
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}
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}
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console.timeEnd('init_observer');
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}
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const CSS_IN_JS_IN_HTML = {
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// apply: apply_custom_class,
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init,
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fromClassNameToGroups: split_classname_to_classes_groups
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};
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window.CSS_IN_JS_IN_HTML = CSS_IN_JS_IN_HTML;

‎tests/index.html‎

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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document test</title>
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</head>
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<body>
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<div id="example"></div>
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<div id="example-second">
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<ul>
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<li>One</li>
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<li>Two</li>
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<li>Three</li>
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</ul>
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</div>
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</body>
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</html>

‎tests/index.test.js‎

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const path = require('path');
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async function getComputedStyle(element, pseudoElement = null) {
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return page.evaluate((element, pseudoElement) => {
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const style = window.getComputedStyle(element, pseudoElement);
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return JSON.parse(JSON.stringify(style));
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}, element, pseudoElement);
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}
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async function getClasses(element) {
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return page.evaluate((element) => element.className, element);
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}
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async function sleep(ms) {
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return new Promise(resolve => setTimeout(resolve, ms));
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}
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const COLORS = {
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red: 'rgb(255, 0, 0)',
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green: 'rgb(0, 128, 0)',
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blue: 'rgb(0, 0, 255)',
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};
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const EXAMPLES = {
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first: '.example',
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second: '.example:nth-of-type(2)'
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}
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describe('CSS-in-JS-in-HTML process', () => {
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beforeAll(async () => {
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const url = 'file://' + path.join(__dirname, 'index.html');
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await page.goto(url);
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await page.addScriptTag({ path: path.join(__dirname, '..', 'build', 'index.min.js') });
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await page.addScriptTag({
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content: `CSS_IN_JS_IN_HTML.init(document, null);`
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});
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});
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describe('Classes only', () => {
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it('class "background-[red]" should be "background" as "red"', async () => {
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const element = await page.evaluate( async () => {
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const element = document.querySelector('#example');
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element.className = 'background-[red]';
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await Promise.resolve(setTimeout(() => {}, 1000));
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return JSON.parse(JSON.stringify(getComputedStyle(element)));
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});
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expect(element.backgroundColor).toBe(COLORS.red);
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});
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53+
it('class "background-[green] color-[blue]" should be "background" as "green" and "color" as "blue"', async () => {
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const element = await page.evaluate( async () => {
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const element = document.querySelector('#example');
56+
element.className = 'background-[green] color-[blue]';
57+
await Promise.resolve(setTimeout(() => {}, 1000));
58+
return JSON.parse(JSON.stringify(getComputedStyle(element)));
59+
});
60+
expect(element.backgroundColor).toBe(COLORS.green);
61+
expect(element.color).toBe(COLORS.blue);
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});
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});
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65+
describe('Selectors + Classes', () => {
66+
it('class "[ul]:display-[flex]" should be "display" as "flex" for every "ul" element in child tree', async () => {
67+
const is_every_ul_flex = await page.evaluate( async () => {
68+
const element = document.querySelector('#example-second');
69+
element.className = '[ul]:display-[flex]';
70+
await Promise.resolve(setTimeout(() => {}, 1000));
71+
const every_ul = element.querySelectorAll('ul');
72+
const check_every_ul = Array.from(every_ul).every((ul) => {
73+
return ul.style.display === 'flex';
74+
});
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return check_every_ul;
76+
});
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expect(is_every_ul_flex).toBe(true);
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});
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});
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});

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