[ACS-4865] setup and enable code coverage for all projects (#3074)

projects/aca-preview/karma.conf.js

@@ -1,32 +1,15 @@
 // Karma configuration file, see link for more information
 // https://karma-runner.github.io/1.0/config/configuration-file.html
+const { join } = require('path');
+const getBaseKarmaConfig = require('../../karma.conf');
 
 module.exports = function (config) {
+  const baseConfig = getBaseKarmaConfig();
   config.set({
-    basePath: '',
-    frameworks: ['jasmine', '@angular-devkit/build-angular'],
-    plugins: [
-      require('karma-jasmine'),
-      require('karma-chrome-launcher'),
-      require('karma-jasmine-html-reporter'),
-      require('karma-coverage-istanbul-reporter'),
-      require('@angular-devkit/build-angular/plugins/karma')
-    ],
-    client: {
-      clearContext: false // leave Jasmine Spec Runner output visible in browser
+    ...baseConfig,
+    coverageReporter: {
+      ...baseConfig.coverageReporter,
+      dir: join(__dirname, '../../coverage/aca-preview'),
     },
-    coverageIstanbulReporter: {
-      dir: require('path').join(__dirname, '../../coverage/aca-preview'),
-      reports: ['html', 'lcovonly', 'text-summary'],
-      fixWebpackSourcePaths: true
-    },
-    reporters: ['progress', 'kjhtml'],
-    port: 9876,
-    colors: true,
-    logLevel: config.LOG_INFO,
-    autoWatch: true,
-    browsers: ['Chrome'],
-    singleRun: true,
-    restartOnFileChange: true
   });
 };