the process of running cases is blocked since No binary for Chrome browser on your platform, but I have configured two browsers, one is available and one is missing.

[hanalice]

Expected behaviour

I am working on a Centos environment, it has Firefox by default, and I didn't install Chrome browser. I have install the karma-firefox-launcher in devDependencies. I have browsers: ['Firefox','Chrome'] in karma.conf.js, I suppose it can automatically open Firefox and executes cases, and ignore the Chrome not installed error.

And I have tested, once I remove the Chrome from the browsers, and the require of karma-chrome-launcher, it will execute the cases immediately. So my question is, whether does this happen? I am not sure if it's a bug or work-as-design.

And I have tested on Windows environement ,which has both Firefox and Chrome, it works fine.

Actual behaviour

After I run npm run test, it throws below errors, and indeed, I have no chrome in my environment. It will automatically open firefox, but the cases will not run, it has been blocked.

below is the console output,

[root@localhost]$ npm run test
> ng test

?Browser application bundle generation complete.
12 07 2023 15:14:54.270:WARN [karma]: No captured browser, open http://localhost:9876/
12 07 2023 15:14:54.283:INFO [karma-server]: Karma v6.3.20 server started at http://localhost:9876/
12 07 2023 15:14:54.284:INFO [launcher]: Launching browsers Firefox, Chrome with concurrency unlimited
12 07 2023 15:14:54.288:INFO [launcher]: Starting browser Firefox
12 07 2023 15:14:54.349:INFO [launcher]: Starting browser Chrome
12 07 2023 15:14:54.350:ERROR [launcher]: No binary for Chrome browser on your platform.
  Please, set "CHROME_BIN" env variable.
12 07 2023 15:14:59.124:INFO [Firefox 102.0 (Linux x86_64)]: Connected on socket xH76gJECbuD7YSLcAAAB with id 78973281

this is the browser screenshot,

Environment Details

• karma version "~6.3.0",

• Relevant part of karma.config.js file

module.exports = function (config) {
  config.set({
    basePath: '',
    frameworks: ['jasmine', '@angular-devkit/build-angular'],
    plugins: [
      require('karma-jasmine'),
      require('karma-firefox-launcher'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-coverage'),
      require('@angular-devkit/build-angular/plugins/karma')
    ],
    ...
    port: 9876,
    autoWatch: true,
    browsers: ['Firefox','Chrome'],
    singleRun: false,
    restartOnFileChange: true
  });
};

Steps to reproduce the behaviour

1. install the karma-firefox-launcher in devDependencies
2. add Firefox into browsers option, and add require of karma-firefox-launcher in karma.conf.js
3. run npm run test in a Centos ssh terminal