🌱 add karma config for testing

Author: marcode24

angular.json

@@ -103,6 +103,11 @@
               "src/favicon.ico",
               "src/assets"
             ],
+            "stylePreprocessorOptions": {
+              "includePaths": [
+                "src/assets/scss"
+              ]
+            },
             "styles": [
               "src/styles.scss"
             ],

karma.conf.js

@@ -10,7 +10,8 @@ module.exports = function (config) {
       require('karma-chrome-launcher'),
       require('karma-jasmine-html-reporter'),
       require('karma-coverage'),
-      require('@angular-devkit/build-angular/plugins/karma')
+      require('@angular-devkit/build-angular/plugins/karma'),
+      require('karma-mocha-reporter'),
     ],
     client: {
       jasmine: {
@@ -32,12 +33,18 @@ module.exports = function (config) {
         { type: 'text-summary' }
       ]
     },
-    reporters: ['progress', 'kjhtml'],
+    reporters: ['mocha'],
     port: 9876,
     colors: true,
     logLevel: config.LOG_INFO,
     autoWatch: true,
-    browsers: ['Chrome'],
+    browsers: ['ChromeHeadless'],
+    customLaunchers: {
+      ChromeHeadlessCI: {
+        base: 'ChromeHeadless',
+        flags: ['--no-sandbox']
+      }
+    },
     singleRun: false,
     restartOnFileChange: true
   });