[Bug Report] Tests failing with error TypeError: Cannot read property 'isHydrating' of undefined

[gadelkareem]

Environment

Vuetify Version: 2.4.5
Last working version: 2.2.11
Vue Version: 2.6.12
Browsers: Other
OS: Linux

Steps to reproduce

The feature/upgrade-vuetify has Vuetify 2.4.5 and that's where the tests fail

Example of test
https://gitlab.com/gadelkareem/skeleton/-/blob/feature/upgrade-vuetify/src/frontend/src/pages/dashboard/account/__tests__/update-profile.spec.js

import {createLocalVue, mount} from '@vue/test-utils'
import Vuex from 'vuex'
import VueRouter from 'vue-router'
import initData from '@@/globals/init-data'
import Page from '../update-profile'
import Vuetify from 'vuetify'

const localVue = createLocalVue()

describe('update-profile.vue', () => {
  let store, vuetify

  beforeEach(() => {
    const actions = {
      'page/title': jest.fn(),
      'loading/start': jest.fn(),
      'loading/finish': jest.fn()
    }
    const getters = {
      'user/user': () => initData().user
    }
    store = new Vuex.Store({
      actions,
      getters,
      state: {
        loading: {status: false}
      }
    })
    vuetify = new Vuetify()
  })

  it('should match snapshot', () => {
    const router = new VueRouter({})
    const w = mount(Page, {
      store,
      router,
      localVue,
      vuetify,
      stubs: ['router-link', 'router-view'],
      created() {
        this.$vuetify.lang = {
          t: () => {
          }
        }
        this.$vuetify.theme = {dark: false}
      }
    })

    expect(w.html()).toMatchSnapshot()
    w.destroy()
  })
})

Jest setup
https://gitlab.com/gadelkareem/skeleton/-/blob/feature/upgrade-vuetify/src/frontend/test/_setup.js

import Vue from 'vue'
import Vuetify from 'vuetify'
import Vuex from 'vuex'
import VueRouter from 'vue-router'

Vue.use(Vuetify)
Vue.use(Vuex)
Vue.use(VueRouter)

require('../src/plugins/mixin')
Vue.use(require('vue-chartist'))
Vue.config.silent = true

jest config https://gitlab.com/gadelkareem/skeleton/-/blob/feature/upgrade-vuetify/src/frontend/jest.config.js#L36

module.exports = {
  moduleFileExtensions: [
    'js',
    'jsx',
    'json',
    'vue'
  ],
  watchman: false,
  moduleNameMapper: {
    '^~/(.*)$': '<rootDir>/$1',
    '^~~/(.*)$': '<rootDir>/src/$1',
    '^@/(.*)$': '<rootDir>/$1',
    '^@@/(.*)$': '<rootDir>/src/$1'
  },
  transform: {
    // process js with `babel-jest`
    '^.+\\.[jt]sx?$': '<rootDir>/node_modules/babel-jest',
    // process `*.vue` files with `vue-jest`
    '.*\\.(vue)$': '<rootDir>/node_modules/vue-jest',
    '.+\\.(css|styl|less|sass|scss|svg|png|jpg|ttf|woff|woff2)$': '<rootDir>/node_modules/jest-transform-stub'
  },
  snapshotSerializers: ['<rootDir>/node_modules/jest-serializer-vue'],
  collectCoverage: false,
  collectCoverageFrom: [
    '<rootDir>/src/components/**/*.vue',
    '<rootDir>/src/pages/*.vue'
  ],
  'verbose': true,
  'modulePaths': [
    '<rootDir>/src',
    '<rootDir>/node_modules'
  ],
  'globals': {
    'NODE_ENV': 'test'
  },
  setupFiles: ['<rootDir>/test/_setup.js'],
  transformIgnorePatterns: [
    '<rootDir>/node_modules/(?!vuetify)'
  ]
}

Expected Behavior

Tests are passing on the master branch for the same project which is using version 2.2.11 https://gitlab.com/gadelkareem/skeleton/-/jobs/1020457978

Actual Behavior

Tests fail https://gitlab.com/gadelkareem/skeleton/-/jobs/1082962881

Reproduction Link

https://gitlab.com/gadelkareem/skeleton/-/jobs/1082962881

[KaelWD]

This seems to be caused by vuejs/vue-test-utils#1661, it works if you roll back to 1.0.4.

[gadelkareem]

@KaelWD it still fails after downgrade https://gitlab.com/gadelkareem/skeleton/-/jobs/1083837675
plz reopen.

[KaelWD]

You didn't downgrade it, ^ matches the latest minor version.

[gadelkareem]

Got it! thanks!