test: migrate from karma to jest

angular.json

@@ -104,26 +104,6 @@
             "browserTarget": "angular-electron:build"
           }
         },
-        "test": {
-          "builder": "@angular-builders/custom-webpack:karma",
-          "options": {
-            "main": "src/test.ts",
-            "polyfills": "src/polyfills-test.ts",
-            "tsConfig": "src/tsconfig.spec.json",
-            "karmaConfig": "src/karma.conf.js",
-            "scripts": [],
-            "styles": [
-              "src/styles.scss"
-            ],
-            "assets": [
-              "src/assets"
-            ],
-            "customWebpackConfig": {
-              "path": "./angular.webpack.js",
-              "target": "electron-renderer"
-            }
-          }
-        },
         "lint": {
           "builder": "@angular-eslint/builder:lint",
           "options": {
@@ -168,4 +148,4 @@
       "prefix": "app"
     }
   }
-}
+}

package.json

@@ -62,6 +62,7 @@
     "@semantic-release/git": "9.0.0",
     "@types/jasmine": "3.5.11",
     "@types/jasminewd2": "2.0.8",
+    "@types/jest": "26.0.14",
     "@types/mocha": "7.0.2",
     "@types/node": "12.12.6",
     "@typescript-eslint/eslint-plugin": "3.6.0",
@@ -78,12 +79,15 @@
     "eslint-plugin-import": "2.22.0",
     "jasmine-core": "3.5.0",
     "jasmine-spec-reporter": "5.0.2",
+    "jest": "26.4.2",
+    "jest-preset-angular": "8.3.1",
     "karma": "5.1.0",
     "karma-coverage-istanbul-reporter": "3.0.3",
     "karma-electron": "6.3.0",
     "karma-jasmine": "3.3.1",
     "karma-jasmine-html-reporter": "1.5.4",
     "mocha": "7.2.0",
+    "ng-mocks": "10.1.3",
     "npm-run-all": "4.1.5",
     "rxjs": "6.6.0",
     "semantic-release": "17.1.1",
@@ -121,5 +125,18 @@
     "ngx-uploader": "10.0.0",
     "uuid": "8.3.0",
     "video-js": "0.7.0"
+  },
+  "jest": {
+    "preset": "jest-preset-angular",
+    "setupFilesAfterEnv": [
+      "<rootDir>/src/setupJest.ts"
+    ],
+    "testMatch": [
+      "**/+(*.)+(spec|test).+(ts)?(x)"
+    ],
+    "coverageReporters": [
+      "html",
+      "lcov"
+    ]
   }
-}
+}

src/karma.conf.js

@@ -1,44 +0,0 @@
-// Karma configuration file, see link for more information
-// https://karma-runner.github.io/0.13/config/configuration-file.html
-
-module.exports = function (config) {
-  config.set({
-    basePath: '',
-    frameworks: ['jasmine', '@angular-devkit/build-angular'],
-    plugins: [
-      require('karma-jasmine'),
-      require('karma-electron'),
-      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
-    },
-    coverageIstanbulReporter: {
-      dir: require('path').join(__dirname, '../coverage'),
-      reports: [ 'html', 'lcovonly' ],
-      fixWebpackSourcePaths: true
-    },
-    reporters: ['progress', 'kjhtml'],
-    port: 9876,
-    colors: true,
-    logLevel: config.LOG_INFO,
-    browsers: ['AngularElectron'],
-    customLaunchers: {
-      AngularElectron: {
-        base: 'Electron',
-        flags: [
-          '--remote-debugging-port=9222'
-        ],
-        browserWindowOptions: {
-          webPreferences: {
-            nodeIntegration: true,
-            nodeIntegrationInSubFrames: true,
-            allowRunningInsecureContent: true
-          }
-        }
-      }
-    }
-  });
-};

src/setupJest.ts

@@ -0,0 +1 @@
+import 'jest-preset-angular';

src/test.ts

@@ -1,20 +0,0 @@
-// This file is required by karma.conf.js and loads recursively all the .spec and framework files
-
-import 'zone.js/dist/zone-testing';
-import { getTestBed } from '@angular/core/testing';
-import {
-  BrowserDynamicTestingModule,
-  platformBrowserDynamicTesting
-} from '@angular/platform-browser-dynamic/testing';
-
-declare const require: any;
-
-// First, initialize the Angular testing environment.
-getTestBed().initTestEnvironment(
-  BrowserDynamicTestingModule,
-  platformBrowserDynamicTesting()
-);
-// Then we find all the tests.
-const context = require.context('./', true, /\.spec\.ts$/);
-// And load the modules.
-context.keys().map(context);

src/tsconfig.spec.json

@@ -1,24 +0,0 @@
-{
-  "extends": "../tsconfig.base.json",
-  "compilerOptions": {
-    "outDir": "../out-tsc/spec",
-    "module": "commonjs",
-    "types": [
-      "jasmine",
-      "node"
-    ]
-  },
-  "files": [
-    "test.ts",
-    "polyfills-test.ts"
-  ],
-  "include": [
-    "**/*.spec.ts",
-    "**/*.d.ts"
-  ],
-  "exclude": [
-    "dist",
-    "release",
-    "node_modules"
-  ]
-}

tsconfig.spec.json

@@ -0,0 +1,11 @@
+{
+    "extends": "./tsconfig.json",
+    "compilerOptions": {
+        "outDir": "../out-tsc/spec",
+        "baseUrl": "./",
+        "types": ["jest", "node"],
+        "experimentalDecorators": true
+    },
+    "files": ["src/polyfills.ts"],
+    "include": ["**/*.spec.ts", "**/*.d.ts"]
+}