feat: integrate vitest

vite.config.ts

@@ -44,6 +44,7 @@ export default defineConfig({
         'vue-i18n',
         '@vueuse/head',
         '@vueuse/core',
+        'vitest',
       ],
       dts: 'src/auto-imports.d.ts',
     }),
@@ -165,4 +166,13 @@ export default defineConfig({
       'vue-demi',
     ],
   },
+
+  // https://github.com/vitest-dev/vitest
+  test: {
+    include: ['test/**/*.test.ts'],
+    environment: 'jsdom',
+    deps: {
+      inline: ['@vue', '@vueuse', 'vue-demi'],
+    },
+  },
 })