vue cli -b with router generates a test that fails

[christophsturm]

Version

3.4.1

Reproduction link

https://gist.github.com/christophsturm/e54d64e18074206c1806dd375888e29b

Environment info

~/Projects/vue/test-app3% vue info

Environment Info:

  System:
    OS: macOS 10.14.3
    CPU: (12) x64 Intel(R) Core(TM) i7-8700B CPU @ 3.20GHz
  Binaries:
    Node: 11.10.0 - /usr/local/bin/node
    Yarn: 1.13.0 - /usr/local/bin/yarn
    npm: 6.7.0 - /usr/local/bin/npm
  Browsers:
    Chrome: 72.0.3626.119
    Firefox: 63.0.3
    Safari: 12.0.3
  npmPackages:
    @vue/babel-helper-vue-jsx-merge-props:  1.0.0-beta.2
    @vue/babel-plugin-transform-vue-jsx:  1.0.0-beta.2
    @vue/babel-preset-app:  3.4.1
    @vue/babel-preset-jsx:  1.0.0-beta.2
    @vue/babel-sugar-functional-vue:  1.0.0-beta.2
    @vue/babel-sugar-inject-h:  1.0.0-beta.2
    @vue/babel-sugar-v-model:  1.0.0-beta.2
    @vue/babel-sugar-v-on:  1.0.0-beta.2
    @vue/cli-overlay:  3.4.1
    @vue/cli-plugin-babel: ^3.4.0 => 3.4.1
    @vue/cli-plugin-unit-jest: ^3.4.0 => 3.4.1
    @vue/cli-service: ^3.4.0 => 3.4.1
    @vue/cli-shared-utils:  3.4.1
    @vue/component-compiler-utils:  2.6.0
    @vue/preload-webpack-plugin:  1.1.0
    @vue/test-utils: ^1.0.0-beta.20 => 1.0.0-beta.29
    @vue/web-component-wrapper:  1.2.0
    jest-serializer-vue:  2.0.2
    vue: ^2.6.6 => 2.6.7
    vue-hot-reload-api:  2.3.3
    vue-jest:  3.0.3
    vue-loader:  15.6.4
    vue-router: ^3.0.1 => 3.0.2
    vue-style-loader:  4.1.2
    vue-template-compiler: ^2.5.21 => 2.6.7
    vue-template-es2015-compiler:  1.9.1
  npmGlobalPackages:
    @vue/cli: Not Found

Steps to reproduce

just run the code in the gist.

What is expected?

the task should work

What is actually happening?

yarn run v1.13.0
$ vue-cli-service test:unit
FAIL tests/unit/example.spec.js
✕ App should work (23ms)

● App should work

expect(received).toMatch(expected)

Expected value to match:
  "Welcome to Your Vue.js App"
Received:
  "Home |
    About"

  4 | test('App should work', () => {
  5 |   const wrapper = shallowMount(App)
> 6 |   expect(wrapper.text()).toMatch(`Welcome to Your Vue.js App`)
    |                          ^
  7 | })
  8 |

  at Object.toMatch (tests/unit/example.spec.js:6:26)

console.error node_modules/vue/dist/vue.runtime.common.dev.js:621
[Vue warn]: Unknown custom element: - did you register the component correctly? For recursive components, make sure to provide the "name" option.

found in

---> <Anonymous>
       <Root>

console.error node_modules/vue/dist/vue.runtime.common.dev.js:621
[Vue warn]: Unknown custom element: - did you register the component correctly? For recursive components, make sure to provide the "name" option.

found in

---> <Anonymous>
       <Root>

console.error node_modules/vue/dist/vue.runtime.common.dev.js:621
[Vue warn]: Unknown custom element: - did you register the component correctly? For recursive components, make sure to provide the "name" option.

found in

---> <Anonymous>
       <Root>

Test Suites: 1 failed, 1 total
Tests: 1 failed, 1 total
Snapshots: 0 total
Time: 1.443s
Ran all test suites.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.