Jest support error

[sniperadmin]

Jest has unexpected behaviors:

first, this error pops up:

PS C:\Users\Nasr\Desktop\vue-commerce> jest
 FAIL  tests/unit/example.spec.js
  ● Test suite failed to run

    not supported

      at Root.loadSync (node_modules/protobufjs/src/root.js:234:15)
      at Object.loadSync (node_modules/protobufjs/src/index-light.js:69:17)
      at Object.<anonymous> (node_modules/@grpc/proto-loader/build/src/index.js:235:37)
      at Object.<anonymous> (node_modules/@firebase/firestore/dist/index.node.cjs.js:14:19)

[vue-jest]: no tsconfig.json found, defaulting to default typescript options

seond: the project does not use TS by any means.

here are the basic configs

• jest.config.js

  module.exports = {
  preset: '@vue/cli-plugin-unit-jest',
  testEnvironment: 'node',
  roots:['<rootDir>/tests/unit'],
  setupFiles: [
  '<rootDir>/register-context.js',
  '<rootDir>/jest-setup.js'
  ],
  modulePaths: [
  '<rootDir>',
  ],
  modulePathIgnorePatterns: [
  'node_modules',
  ],
  moduleFileExtensions: ['js', 'json', 'vue'],
  transform: {
  // process `*.vue` files with `vue-jest`
  '.*\\.vue$': 'vue-jest',
  '.*\\.js$': 'babel-jest',
  // '^.+\\.tsx?$': 'ts-jest',
  // ".+\\.(css|styl|less|sass|scss|svg|png|jpg|ttf|woff|woff2)$": "jest-transform-stub"
  },
  transformIgnorePatterns: ['node_modules'],
  moduleNameMapper: {
  '^@/(.*)$': '<rootDir>/src/$1',
  "^~/(.*)$": "<rootDir>/src/$1",
  '^vue$': 'vue/dist/vue.common.js',
  },
  }

babel.config.js

module.exports = {
  presets: ['@vue/app'],
  env: {
    test: {
      plugins: ['require-context-hook']
    }
  }
}

[emmanuelthegrey]

I was having this problem too. I realized I was importing another helper class that also referenced a firebase library. Make sure you have mocked out every method that is calling a firebase method and if you are calling them directly then mock those out as well.

[sniperadmin]

Cool @emmanuelthegrey , now i have resolved some config errors. If you could give assistance with the following issues, i will be grateful:

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