collectCoverage not collecting from all files

package.json

    "@babel/plugin-transform-runtime": "^7.2.0",
    "@babel/preset-env": "^7.3.1",
    "@commitlint/cli": "^7.3.2",
    "@commitlint/config-conventional": "^7.3.1",
    "@vue/cli-plugin-babel": "^3.4.0",
    "@vue/cli-plugin-eslint": "^3.4.0",
    "@vue/cli-plugin-unit-jest": "^3.4.0",
    "@vue/cli-service": "^3.4.0",
    "@vue/eslint-config-prettier": "^4.0.1",
    "@vue/eslint-config-standard": "^4.0.0",
    "@vue/test-utils": "^1.0.0-beta.20",
    "babel-core": "7.0.0-bridge.0",
    "babel-eslint": "^10.0.1",
    "babel-jest": "^23.6.0",
    "eslint": "^5.8.0",
    "eslint-plugin-jest": "^22.2.2",
    "eslint-plugin-vue": "^5.0.0",
    "jest-junit": "^6.0.1",
    "jest-transform-stub": "^1.0.0",
    "jest-vue-preprocessor": "^1.4.0",
    "node-sass": "^4.11.0",
    "prettier": "^1.15.3",
    "sass-loader": "^7.1.0",
    "vue-jest": "^4.0.0-beta.0",
    "vue-template-compiler": "^2.5.21"

jest.config.js

module.exports = {
  moduleFileExtensions: ['js', 'json', 'vue'],
  transform: {
    '^.+\\.vue$': '<rootDir>/node_modules/vue-jest',
    '.+\\.(css|styl|less|sass|scss|svg|png|jpg|ttf|woff|woff2)$': '<rootDir>/node_modules/jest-transform-stub',
    '^.+\\.js?$': '<rootDir>/node_modules/babel-jest',
  },
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/src/$1',
  },
  roots: ['<rootDir>/src/'],
  collectCoverage: true,
  coverageDirectory: '<rootDir>/reports/coverage',
  reporters: ['default', ['jest-junit', { output: './reports/junit.xml' }]],
  coverageReporters: ['json-summary', 'lcov', 'text', 'text-summary'],
  collectCoverageFrom: ['**/*.{js,vue}'],
  cache: false,
  snapshotSerializers: ['jest-serializer-vue'],
  testURL: 'http://localhost/',
  testMatch: ['**/__tests__/**/*.js', '**/?(*.)+(spec|test).js'],
  globals: {
    'vue-jest': {
      babelConfig: '<rootDir>/.babelrc',
    },
    __DEV__: true,
    CSInterface: class CSInterface {},
  },
};

.babelrc

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "modules": false,
        "targets": {
          "browsers": ["> 1%", "last 2 versions", "not ie <= 8"]
        }
      }
    ]
  ],
  "plugins": ["@babel/plugin-transform-runtime"],
  "env": {
    "test": {
      "presets": ["@babel/preset-env"]
    }
  }
}

I’m using the command vue-cli-service test:unit --no-cache to run tests. All the tests run, but coverage is not collected from anything in the component subdir from within src. This means most of my tests are not collecting coverage.

I’m also having an issue with the jest global I have set up in my jest config not actually working. Nothing I do to my set up seems to fix either of these issues.

[matsieftw]

Sorry, I cannot provide a repo.

Solution to the problem for anyone coming here later:

If your component is stateless/does not have runnable JS in the file, vue-jestwill not run tests on the component.

To work around this, you must add dummy data to your component so vue-jest will run the associated tests for that component.

  data() {
    return {};
  },

[eddyerburgh]

Yes the fix was in beta.1, current version is beta.2