I am getting an error while testing with jest in my Javascript code.
The Error:
FAIL src/test/testPlaywright.test.jsx (5.779 s) × Creating a Snapshot of interacting with playwright (149 ms)
● Creating a Snapshot of interacting with playwright
browserType.launch: setImmediate is not defined
4 | for(const browserType of [chromium, firefox, webkit]){
5 | console.log("Testing");
> 6 | const browser = await browserType.launch({headless: false});
| ^
7 | const page = await browser.newPage();
8 | await page.setDefaultNavigationTimeout(1000000);
9 | await page.goto('https://app.wien.gv.at/navigation/', { waitUntil: 'networkidle' });
at Object.<anonymous> (src/test/testPlaywright.test.jsx:6:43)
Test Suites: 1 failed, 1 total Tests: 1 failed, 1 total Snapshots: 0 total Time: 8.517 s Ran all test suites related to changed files.
The Code:
import { chromium, webkit, firefox } from "playwright";
test('Creating a Snapshot of interacting with playwright',async()=>{
for(const browserType of [chromium, firefox, webkit]){
console.log("Testing");
const browser = await browserType.launch({headless: false});
const page = await browser.newPage();
await page.setDefaultNavigationTimeout(1000000);
await page.goto('https://app.wien.gv.at/navigation/', { waitUntil: 'networkidle' });
await page.click("(//mat-icon[text()='keyboard_arrow_down'])[1]")
await page.click("#mat-select-0")
await page.click('//span[@class="mat-option-text"][contains(.,"Veranstaltungszentrum")]')
await page.click("//mat-icon[text()='keyboard_arrow_up']")
await page.click("(//mat-icon[text()='keyboard_arrow_down'])[2]")
await page.click("#mat-select-3")
await page.click('//span[@class="mat-option-text"][contains(.,"Kapelle Krankenhaus Hietzing")]')
await page.waitForTimeout(2000);
await page.screenshot({path:'image-'+browserType.name()+'.png'});
await browser.close();
}
})
The Problem is the setImmediate function.
I just added the polyfill.js in my test class : import 'core-js'; after that setImmediate was defined again and works now as intended.
I suspect your jest.config.js contains
testEnvironment: 'jsdom'
you can try remove this setting or
testEnvironment: 'node'
I hope you have good luck.
The solution that worked well for me, in react-native environment, was the following
yarn add -D core-js
jest.config.js file, or the config file configured on the jest parameter setupFiles the following importimport 'core-js';