feat: upgrade jest to 23.1.0

BREAKING CHANGE: jest is upgraded to 23.1.0 with minor breaking changes but should not affect normal test cases

Author: yyx990803

package.json

@@ -49,7 +49,7 @@
  "eslint-plugin-vue-libs": "^2.1.0",
  "globby": "^8.0.1",
  "http-server": "^0.11.1",
- "jest": "^22.1.4",
+ "jest": "^23.1.0",
  "lerna": "^2.8.0",
  "lint-staged": "^6.0.1",
  "memfs": "^2.8.0",

packages/@vue/cli-plugin-unit-jest/__tests__/jestGenerator.spec.js

@@ -7,7 +7,12 @@ test('base', async () => {
  apply: require('../generator'),
  options: {}
  },
- // mock presence of the eslint plugin
+ // mock presence of the babel & eslint plugin
+ {
+ id: 'babel',
+ apply: () => {},
+ options: {}
+ },
  {
  id: 'eslint',
  apply: () => {},
@@ -17,9 +22,27 @@ test('base', async () => {
 
  expect(pkg.scripts['test:unit']).toBe('vue-cli-service test:unit')
  expect(pkg.devDependencies).toHaveProperty('@vue/test-utils')
+
+ // should inject babel-jest
  expect(pkg.devDependencies).toHaveProperty('babel-jest')
+ // babel-core 6 -> 7 shim
+ expect(pkg.devDependencies).toHaveProperty('babel-core')
+ // eslint
  expect(files['tests/unit/.eslintrc.js']).toMatch('jest: true')
 
  const spec = files['tests/unit/HelloWorld.spec.js']
  expect(spec).toMatch(`expect(wrapper.text()).toMatch(msg)`)
 })
+
+test('without babel/eslint', async () => {
+ const { pkg, files } = await generateWithPlugin([
+ {
+ id: 'unit-jest',
+ apply: require('../generator'),
+ options: {}
+ }
+ ])
+
+ expect(pkg.devDependencies).not.toHaveProperty('babel-jest')
+ expect(files['tests/unit/.eslintrc.js']).toBeUndefined()
+})

packages/@vue/cli-plugin-unit-jest/generator/index.js

@@ -40,7 +40,7 @@ module.exports = api => {
  jestConfig.transform['^.+\\.jsx?$'] = 'babel-jest'
  api.extendPackage({
  devDependencies: {
- 'babel-jest': '^22.4.3',
+ 'babel-jest': '^23.0.1',
  // this is for now necessary to force babel-jest and vue-jest to use babel 7
  'babel-core': '7.0.0-bridge.0'
  }

packages/@vue/cli-plugin-unit-jest/package.json

@@ -23,14 +23,14 @@
  },
  "dependencies": {
  "@vue/cli-shared-utils": "^3.0.0-beta.15",
- "jest": "^22.4.3",
+ "jest": "^23.1.0",
  "jest-serializer-vue": "^1.0.0",
  "jest-transform-stub": "^1.0.0",
  "vue-jest": "^2.6.0"
  },
  "devDependencies": {
  "@vue/test-utils": "^1.0.0-beta.16",
- "babel-jest": "^22.4.3",
+ "babel-jest": "^23.0.1",
  "ts-jest": "^22.4.6"
  }
 }