Coverage isn't calculated properly for non-SFC

[dmytrokirpa]

Version

3.0.5

Reproduction link

https://github.com/dmitriykirpa/vue-cli-jest-coverage-example

Environment info

  System:
    OS: macOS 10.15.4
    CPU: (12) x64 Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
  Binaries:
    Node: 14.2.0 - /usr/local/bin/node
    Yarn: 1.21.0 - /usr/local/bin/yarn
    npm: 6.14.4 - /usr/local/bin/npm
  Browsers:
    Chrome: 81.0.4044.138
    Firefox: 70.0.1
    Safari: 13.1
  npmPackages:
    @vue/cli-overlay:  4.3.1 
    @vue/cli-plugin-eslint: ^4.3.0 => 4.3.1 
    @vue/cli-plugin-router:  4.3.1 
    @vue/cli-plugin-unit-jest: ^4.3.0 => 4.3.1 
    @vue/cli-plugin-vuex:  4.3.1 
    @vue/cli-service: ^4.3.0 => 4.3.1 
    @vue/cli-shared-utils:  4.3.1 
    @vue/component-compiler-utils:  3.1.2 
    @vue/eslint-config-prettier: ^6.0.0 => 6.0.0 
    @vue/preload-webpack-plugin:  1.1.1 
    @vue/test-utils: 1.0.0-beta.31 => 1.0.0-beta.31 
    @vue/web-component-wrapper:  1.2.0 
    eslint-plugin-vue: ^6.2.2 => 6.2.2 
    jest-serializer-vue:  2.0.2 
    vue: ^2.6.11 => 2.6.11 
    vue-eslint-parser:  7.1.0 
    vue-hot-reload-api:  2.3.4 
    vue-jest:  3.0.5 
    vue-loader:  15.9.2 
    vue-style-loader:  4.1.2 
    vue-template-compiler: ^2.6.11 => 2.6.11 
    vue-template-es2015-compiler:  1.9.1 
  npmGlobalPackages:
    @vue/cli: Not Found

Steps to reproduce

1. Create a new vue-cli project (or configure it manually) with vue-jest configured.
2. Move the script section from the src/components/HelloWorld.vue to a separate file script.js.
3. Add the <script src="./script.js" /> to src/components/HelloWorld.vue
4. Run yarn/npm run test:unit --coverage
5. Observe the result.

What is expected?

Coverage for script.js calculated properly

What is actually happening?

Coverage for script.js is 0

[lmiller1990]

Hi! Thanks fore this.

I started to work on this repo (around 1 month? 2 months?) ago. I am not super familiar with how this all works yet, but I would like to start digging into it more and closing out some of these long standing issues.

Happy to help out if you would like to give it a shot, too.

[superkikin2]

Same error.
I'm using @vue/cli-plugin-unit-jest, with this jest.config.js:

  module.exports = {
  preset                     : '@vue/cli-plugin-unit-jest',
  transformIgnorePatterns    : ['node_modules/(?!(?:@babel|place|folders|here))'],
  setupFilesAfterEnv         : ['./tests/unit/jest.setup.js'],
  collectCoverage            : true,
  collectCoverageFrom        : ['src/**/*.{js,vue}', '!**/__DEMO/**', '!**/vendor/**'],
  coverageDirectory          : '<rootDir>/coverage',
  coveragePathIgnorePatterns : ['/node_modules/', '/src/main.m?js', '/src/index.m?js', '/src/lang', '/src/locale', '/__DEMO/', '/src/manage/'],
  coverageThreshold          : {
    global : {
      branches   : 90,
      functions  : 90,
      lines      : 90,
      statements : -10
    }
  }
};

When i run test everything is ok but coverage report not show correct info.
If i see html report file .vue contains js code and 100% passed, and .js file is marked like not passed.

Summary:

file .vue:

file .js:

[jrkienle]

I'm experiencing the same issue, has there been any progress on this?

[lmiller1990]

Which version of vue-jest are you using @jrkienle ? 3 or 4 (or 5?)

[webrsb]

same issue is using vue-jest v3.0.6

[lmiller1990]

Can you please upgrade to v4 and see how that goes? That is the latest version (works with Vue 2).

[sakakunk]

Same problem for me, I'm using v4.0.0 beta 6.

[OClement]

Same with v5...

[lmiller1990]

If anyone is super motivated to tackle this I can try to help out, I have many other higher priority bugs like proper TS support, releasing Test Utils v2, etc, so I was not able to tackle this.

As far as I can see it's (mostly) working ok for SFCs? Is this just for non sfc components? Is the main use case JSX/TSX?