Database, eventbus, pluginloader fixes

src/frontend/karma.conf.js

@@ -2,7 +2,7 @@
 // https://karma-runner.github.io/1.0/config/configuration-file.html
 
 module.exports = function (config) {
-  config.set({
+  const configuration = {
     basePath: '',
     frameworks: ['jasmine', '@angular-devkit/build-angular'],
     plugins: [
@@ -12,21 +12,34 @@ module.exports = function (config) {
       require('karma-coverage-istanbul-reporter'),
       require('@angular-devkit/build-angular/plugins/karma')
     ],
-    client: {
+    client:{
       clearContext: false // leave Jasmine Spec Runner output visible in browser
     },
     coverageIstanbulReporter: {
-      dir: require('path').join(__dirname, './coverage/dashboard'),
-      reports: ['html', 'lcovonly', 'text-summary'],
+      dir: require('path').join(__dirname, 'coverage'), reports: [ 'html', 'lcovonly' ],
       fixWebpackSourcePaths: true
     },
+    angularCli: {
+      environment: 'dev'
+    },
     reporters: ['progress', 'kjhtml'],
     port: 9876,
     colors: true,
     logLevel: config.LOG_INFO,
     autoWatch: true,
     browsers: ['Chrome'],
-    singleRun: false,
-    restartOnFileChange: true
-  });
+    customLaunchers: {
+      Chrome_travis_ci: {
+        base: 'Chrome',
+        flags: ['--no-sandbox']
+      }
+    },
+    singleRun: false
+  };
+
+  if (process.env.TRAVIS) {
+    configuration.browsers = ['Chrome_travis_ci'];
+  }
+
+  config.set(configuration);
 };