CODEWITHSUNDEEP
angularkarma-jasmine
Lempkin
Lempkin

Reputation: 1578

Disconnected reconnect failed before timeout of X only on Azure CI

My project (angular 11) has about 350 unit tests which runs OK in local. In Azure CI I get following error very often lately :

Disconnected (0 times) reconnect failed before timeout of 10000ms (ping timeout)

I run tests in CI with :

ng test --no-watch --code-coverage --browsers=ChromeHeadless

My Karma.config.js :

// Karma configuration file, see link for more information
// https://karma-runner.github.io/1.0/config/configuration-file.html

module.exports = function (config) {
  config.set({
    basePath: '',
    frameworks: ['jasmine', '@angular-devkit/build-angular'],
    plugins: [
      require('karma-jasmine'),
      require('karma-coverage'),
      require('karma-spec-reporter'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-junit-reporter'),
      require('@angular-devkit/build-angular/plugins/karma')
    ],
    client: {
      clearContext: false
    },
    coverageReporter: {
      dir: '../coverage',
      subdir: '.',
      reporters:[
        {type: 'cobertura', file : 'cobertura-coverage.xml'},
        {type: 'lcovonly'},
        {type: 'text-summary'}
      ],
      type : 'cobertura',

    },
    junitReporter: {
      outputDir: require('path').join(__dirname, '..'),
    },
    reporters: ['progress', 'kjhtml', 'junit', 'spec', 'coverage'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: false,
    browserDisconnectTimeout: 10000
  });
};

I wonder if there's something wrong in my Karma config? Any idea?

Upvotes: 1

Views: 852

Answers (1)

Viktor Ivliiev
Viktor Ivliiev

Reputation: 1324

More often than not, dedicated test machines are weaker than local machines, which can cause the browser to take longer to launch or respond. Karma has a lot of problems with this, mostly solved by increasing this parameter

browserDisconnectTimeout: 60000 Current default value: 30000

Also use a headless browser for ci

    browsers: ['ChromiumHeadlessNoSandbox'],
    customLaunchers: {
      ChromiumHeadlessNoSandbox: {
        base: 'ChromiumHeadless',
        flags: ['--no-sandbox']
      }
    },

Upvotes: 0

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