Got all the tests working using Karma-Config & Webpack

Author: JamesMessinger

.mocharc.yml

@@ -2,14 +2,7 @@
 # https://mochajs.org/#configuring-mocha-nodejs
 # https://github.com/mochajs/mocha/blob/master/example/config/.mocharc.yml
 
-spec:
-  - test/fixtures
-  - test/specs/**/*.parsed.js
-  - test/specs/**/*.dereferenced.js
-  - test/specs/**/*.bundled.js
-  - test/specs/**/*.spec.js
-
-require: karma-host-environment
+spec: test/specs/**/*.spec.js
 
 bail: true
 recursive: true

karma.conf.js

@@ -1,148 +1,32 @@
 // Karma config
 // https://karma-runner.github.io/0.12/config/configuration-file.html
-"use strict";
-
-module.exports = function (karma) {
-  var config = {
-    frameworks: ["mocha", "chai", "host-environment"],
-    reporters: ["verbose"],
-
-    files: [
-      // Polyfills for older browsers
-      "test/polyfills/promise.js",
-      "test/polyfills/typedarray.js",
-
-      // Json Schema $Ref Parser
-      "dist/ref-parser.min.js",
-      { pattern: "dist/*.map", included: false, served: true },
-
-      // Test Fixtures
-      "test/fixtures/**/*.js",
-
-      // Test Specs
-      "test/specs/**/*.parsed.js",
-      "test/specs/**/*.dereferenced.js",
-      "test/specs/**/*.bundled.js",
-      "test/specs/**/*.spec.js",
-      { pattern: "test/specs/**", included: false, served: true }
-    ]
-  };
-
-  configureCodeCoverage(config);
-  configureBrowsers(config);
-
-  console.log("Karma Config:\n", JSON.stringify(config, null, 2));
-  karma.set(config);
-};
-
-/**
- * Configures the code-coverage reporter
- */
-function configureCodeCoverage (config) {
-  if (process.argv.indexOf("--coverage") === -1) {
-    console.warn("Code-coverage is not enabled");
-    return;
-  }
-
-  config.reporters.push("coverage");
-  config.coverageReporter = {
-    reporters: [
-      { type: "text-summary" },
-      { type: "lcov" }
-    ]
-  };
-
-  config.files = config.files.map(function (file) {
-    if (typeof file === "string") {
-      file = file.replace(/^dist\/(.*)\.min\.js$/, "dist/$1.coverage.js");
-    }
-    return file;
-  });
-}
-
-/**
- * Configures the browsers for the current platform
- */
-function configureBrowsers (config) {
-  let isWindows = /^win/.test(process.platform) || process.env.WINDOWS === "true";
-  let isMac = /^darwin/.test(process.platform);
-  let isLinux = !isMac && !isWindows;
-  let isCI = process.env.CI === "true";
-
-  if (isCI) {
-    if (isWindows) {
-      // IE and Edge aren't available in CI, so use SauceLabs
-      configureSauceLabs(config);
-    }
-    else if (isMac) {
-      config.browsers = ["FirefoxHeadless", "ChromeHeadless", "Safari"];
-    }
-    else if (isLinux) {
-      config.browsers = ["FirefoxHeadless", "ChromeHeadless"];
-    }
-  }
-  else if (isMac) {
-    config.browsers = ["Firefox", "Chrome", "Safari"];
-  }
-  else if (isLinux) {
-    config.browsers = ["Firefox", "Chrome"];
-  }
-  else if (isWindows) {
-    config.browsers = ["Firefox", "Chrome", "IE", "Edge"];
-  }
-}
-
-/**
- * Configures Sauce Labs emulated browsers/devices.
- * https://github.com/karma-runner/karma-sauce-launcher
- */
-function configureSauceLabs (config) {
-  let username = process.env.SAUCE_USERNAME;
-  let accessKey = process.env.SAUCE_ACCESS_KEY;
-
-  if (!username || !accessKey) {
-    throw new Error(`SAUCE_USERNAME and/or SAUCE_ACCESS_KEY is not set`);
-  }
+// https://jsdevtools.org/karma-config/
 
-  let project = require("./package.json");
-
-  config.sauceLabs = {
-    build: `${project.name} v${project.version} Build #${process.env.TRAVIS_JOB_NUMBER}`,
-    testName: `${project.name} v${project.version}`,
-    tags: [project.name],
-  };
-
-  config.customLaunchers = {
-    IE_11: {
-      base: "SauceLabs",
-      platform: "Windows 7",
-      browserName: "internet explorer"
-    },
-    Edge: {
-      base: "SauceLabs",
-      platform: "Windows 10",
-      browserName: "microsoftedge"
-    },
-  };
-
-  config.reporters.push("saucelabs");
-  config.browsers = Object.keys(config.customLaunchers);
-  // config.concurrency = 1;
-  config.captureTimeout = 60000;
-  config.browserDisconnectTolerance = 5,
-  config.browserDisconnectTimeout = 60000;
-  config.browserNoActivityTimeout = 60000;
-  // config.logLevel = "debug";
-
-  // The following tests tend to fail on SauceLabs,
-  // probably due to zero-byte files and special characters in the paths.
-  // So, exclude these tests when running on SauceLabs.
-  config.exclude = [
+"use strict";
+const { karmaConfig } = require("karma-config");
+let exclude = [];
+
+if (process.env.WINDOWS && process.env.CI) {
+  // We're running in a Windows CI/CD environment, so Karma-Config will use SauceLabs.
+  // The following tests tend to fail on SauceLabs, probably due to zero-byte files
+  // and special characters in the paths. So, exclude them.
+  exclude.push(
     "test/specs/__*/**",
     "test/specs/blank/**/*.spec.js",
     "test/specs/circular*/**/*.spec.js",
     "test/specs/empty/**/*.spec.js",
     "test/specs/invalid/**/*.spec.js",
     "test/specs/parsers/**/*.spec.js"
-  ];
+  );
 }
+
+module.exports = karmaConfig({
+  sourceDir: "lib",
+  fixtures: "test/fixtures/**/*.js",
+  browsers: {
+    ie: true,
+  },
+  config: {
+    exclude,
+  }
+});