There is an example of a multi-user scenario on testcafe's github.

https://github.com/DevExpress/testcafe-example-multiuser-scenario

I'm trying to extend it and make sure it works fine with 3 users.

https://github.com/touka-tt/testcafe-example-multiuser-scenario

• third-user-test.js

const { Selector } = require('testcafe');

const { getScenario } = require('..');

const scenario = getScenario('An example of synchronizing multiple tests');
const stage    = scenario.initUser('Third user');

fixture`Third fixture`
    .page('http://localhost:3000');

const input = Selector('input');
const h1    = Selector('h1');

test('test', async t => {
    await stage('Check page load');

    await t.expect(input.exists).ok();

    await stage('Type a color and send it');

    await t
        .typeText(input, 'red')
        .pressKey('enter');

    await stage('Check result');

    await t.expect(h1.innerText).eql('Not ok!');

    await stage('End');
});

• scenario-gist.js

const { Scenario } = require('..');

module.exports = async () => {
    const scenario = new Scenario('An example of synchronizing multiple tests');

    const [user1, user2, user3] = await Promise.all([
        scenario.createUser('First user', 'test/first-user-test.js', 'chrome'),
        scenario.createUser('Second user', 'test/second-user-test.js', 'chrome --incognito'),
        scenario.createUser('Third user', 'test/third-user-test.js', 'chrome --incognito')
    ]);

    await Promise.all([
        user1.runStage('Check page load'),
        user2.runStage('Check page load'),
        user3.runStage('Check page load')
    ]);

    await user1.runStage('Type a color and send it');
    await user1.runStage('Check result');

    await user2.runStage('Type a color and send it');
    await user2.runStage('Check result');

    await user3.runStage('Type a color and send it');
    await user3.runStage('Check result');

    user1.runStage('End');
    user2.runStage('End');
    user3.runStage('End');
};

At first look, this test seems to work well. However, the first time the test is run, it succeeds fine, but on the second and later runs, it gets stalled at the first createUser.

Please tell me how to develop an e2e test using testcafe that can be repeated by multiple users.