Merge pull request #1596 from l-lin/unit-tests-firefox

ci: include firefox browser when unit testing code

Author: l-lin

demo/karma.conf.js

@@ -8,6 +8,7 @@ module.exports = function (config) {
     plugins: [
       require('karma-jasmine'),
       require('karma-chrome-launcher'),
+      require('karma-firefox-launcher'),
       require('karma-jasmine-html-reporter'),
       require('karma-coverage-istanbul-reporter'),
       require('@angular-devkit/build-angular/plugins/karma')
@@ -27,7 +28,7 @@ module.exports = function (config) {
     colors: true,
     logLevel: config.LOG_INFO,
     autoWatch: true,
-    browsers: ['Chrome'],
+    browsers: ['Chrome', 'Firefox'],
     singleRun: false
   });
 };