build: fix unit test using jest

Author: elevatebart

jest.config.js

@@ -1,20 +1,3 @@
 module.exports = {
-  moduleFileExtensions: ["js", "jsx", "json", "vue"],
-  transform: {
-    "^.+\\.vue$": "vue-jest",
-    ".+\\.(css|styl|less|sass|scss|svg|png|jpg|ttf|woff|woff2)$":
-      "jest-transform-stub",
-    "^.+\\.jsx?$": "babel-jest",
-  },
-  transformIgnorePatterns: ["/node_modules/"],
-  moduleNameMapper: {
-    "^@/(.*)$": "<rootDir>/src/$1",
-  },
-  snapshotSerializers: ["jest-serializer-vue"],
-  testMatch: ["**/__tests__/*.(js|jsx|ts|tsx)"],
-  testURL: "http://localhost/",
-  watchPlugins: [
-    "jest-watch-typeahead/filename",
-    "jest-watch-typeahead/testname",
-  ],
-};
+  preset: '@vue/cli-plugin-unit-jest'
+}