fix: switch to karma-coverage (#385)

angular.json

@@ -80,7 +80,7 @@
             "main": "src/test.ts",
             "polyfills": "src/polyfills.ts",
             "tsConfig": "src/tsconfig.spec.json",
-            "karmaConfig": "src/karma.conf.js",
+            "karmaConfig": "karma.conf.js",
             "styles": [],
             "scripts": [],
             "assets": [
@@ -162,4 +162,4 @@
     }
   },
   "defaultProject": "angular-template-for-threejs"
-}
+}

karma.conf.js

@@ -0,0 +1,54 @@
+// Karma configuration file, see link for more information
+// https://karma-runner.github.io/1.0/config/configuration-file.html
+
+module.exports = function (config) {
+  config.set({
+    basePath: 'src',
+    frameworks: ['jasmine', '@angular-devkit/build-angular'],
+    plugins: [
+      require('karma-jasmine'),
+      require('karma-chrome-launcher'),
+      require('karma-jasmine-html-reporter'),
+      require('karma-coverage'),
+      require('@angular-devkit/build-angular/plugins/karma')
+    ],
+    client: {
+      jasmine: {
+        // you can add configuration options for Jasmine here
+        // the possible options are listed at https://jasmine.github.io/api/edge/Configuration.html
+        // for example, you can disable the random execution with `random: false`
+        // or set a specific seed with `seed: 4321`
+      },
+      clearContext: false // leave Jasmine Spec Runner output visible in browser
+    },
+    customLaunchers: {
+      ChromeHeadlessCustom: {
+        base: 'ChromeHeadless',
+        flags: ['--no-sandbox', '--disable-gpu']
+      }
+    },
+    jasmineHtmlReporter: {
+      suppressAll: true // removes the duplicated traces
+    },
+    coverageReporter: {
+      dir: require('path').join(__dirname, './coverage/app'),
+      subdir: '.',
+      reporters: [
+        { type: 'html' },
+        { type: 'text-summary' },
+        { type: 'lcov', subdir: 'report-lcov' },
+      ]
+    },
+    preprocessors: {
+      'src/**/*.ts': 'coverage'
+    },
+    reporters: ['progress', 'kjhtml', 'coverage'],
+    port: 9876,
+    colors: true,
+    logLevel: config.LOG_INFO,
+    autoWatch: true,
+    browsers: ['Chrome'],
+    singleRun: false,
+    restartOnFileChange: true
+  });
+};