add headless chrome for ci tests

Author: thecouchcoder

karma.conf.js

@@ -26,6 +26,12 @@ module.exports = function (config) {
     logLevel: config.LOG_INFO,
     autoWatch: true,
     browsers: ['Chrome'],
+    customLaunchers: {
+      ChromeHeadlessCI: {
+        base: 'ChromeHeadless',
+        flags: ['--no-sandbox']
+      }
+    },
     singleRun: false,
     restartOnFileChange: true
   });

package.json

@@ -7,6 +7,7 @@
     "build": "ng build",
     "prod-build": "ng build --prod",
     "test": "ng test",
+    "ci-test": "npm run test -- --no-watch --no-progress --browsers=ChromeHeadlessCI",
     "lint": "ng lint",
     "e2e": "ng e2e"
   },
@@ -47,4 +48,4 @@
     "tslint": "~6.1.0",
     "typescript": "~3.8.3"
   }
-}
+}