karma.conf.js

module.exports = function (config) {
  const process = require("process");
  process.env.CHROME_BIN = require("puppeteer").executablePath();

  config.set({
    basePath: ".",
    frameworks: ["mocha", "chai"],
    files: [
      { pattern: "dist/*.css", watched: false, included: true },
      { pattern: "dist/*.js", type: "module", included: false, served: true },
      { pattern: "tests/**/*.png", watched: false, included: false, served: true, nocache: false },
      { pattern: "tests/**/*.jpg", watched: false, included: false, served: true, nocache: false },
      { pattern: "tests/**/*.html", watched: false, included: false, served: true, nocache: false },
      { pattern: "src/shared/**/*.js", type: "module", included: true, served: true },
      { pattern: "tests/*.js", type: "module" },
    ],
    proxies: {
      "/assets/": "/base/tests/assets/",
    },
    reporters: ["progress"],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    browsers: ["ChromeHeadlessNoSandbox"],
    customLaunchers: {
      ChromeHeadlessNoSandbox: {
        base: "ChromeHeadless",

        flags: [
          "--disable-gpu",
          "--renderer",
          "--no-sandbox",
          "--no-service-autorun",
          "--no-experiments",
          "--no-default-browser-check",
          "--disable-dev-shm-usage",
          "--disable-setuid-sandbox",
          "--no-first-run",
          "--no-zygote",
          "--single-process",
          "--disable-extensions",
        ],
      },
    },
    autoWatch: false,
    singleRun: true,
    browserDisconnectTimeout: 5000,
    browserDisconnectTolerance: 2,
  });
};