1) Migrate from vuex to pinia.

2) Add tests for all components, store and router.
3) Port `CelebrityGuess` to use `WinnerCard`, `LoserCard` and
`GameSlide`.
4) Delete unused `About.vue`.
5) Added mocks for WebAudio API for tests.
6) Upgrade to latest `vue/test-utils`.
7) Added coverage to tests (now up to 95%!).
8) Migrate off of `vue-cli` test related stuff to straight `jest` with
`babel`.

.eslintignore

@@ -0,0 +1 @@
+tests/test-utils.js

jest.config.js

@@ -1,8 +1,19 @@
 module.exports = {
-  preset: '@vue/cli-plugin-unit-jest',
+  moduleFileExtensions: ['vue', 'js', 'json', 'jsx', 'ts', 'tsx', 'node'],
+  transform: {
+    '^.+\\.vue$': '@vue/vue3-jest',
+    '^.+\\js$': 'babel-jest'
+  },
+  moduleNameMapper: {
+    '^@/(.*)$': '<rootDir>/src/$1'
+  },
+  testEnvironment: 'jsdom',
   setupFiles: [
     './tests/setupTests.js'
   ],
+  setupFilesAfterEnv: [
+    '<rootDir>/jest.setup.js'
+  ],
   collectCoverage: true,
   collectCoverageFrom: [
     'src/**/*.{js,vue}',

jest.setup.js

@@ -0,0 +1,8 @@
+import { mocks } from './tests/test-utils'
+
+// Audio mock
+/* eslint no-undef: "off" */
+global.Audio = jest.fn().mockImplementation(() => ({
+  pause: mocks.Audio.pause,
+  play: mocks.Audio.play
+}))