'find did not return Component' since beta.9 for jest example

[dvic]

Version

1.0.0-beta.11

Reproduction link

https://codesandbox.io/s/3ypyovl7ym

Steps to reproduce

• git clone https://github.com/vuejs/vue-test-utils-jest-example.git
• npm install --save-dev [email protected] (also occurs with beta.11)
• npm install
• npm run test

What is expected?

All tests pass.

What is actually happening?

> jest

 FAIL  test/MessageToggle.spec.js
  ● MessageToggle.vue › toggles msg passed to Message when button is clicked

    [vue-test-utils]: find did not return Component, cannot call props() on empty Wrapper

      at throwError (node_modules/vue-test-utils/dist/vue-test-utils.js:11:9)
      at Object.<anonymous> (test/MessageToggle.spec.js:11:29)
          at new Promise (<anonymous>)
          at <anonymous>
      at process._tickCallback (internal/process/next_tick.js:188:7)

 PASS  test/List.spec.js
 PASS  test/Message.spec.js

Test Suites: 1 failed, 2 passed, 3 total
Tests:       1 failed, 4 passed, 5 total
Snapshots:   1 passed, 1 total
Time:        1.002s
Ran all test suites.

[lusarz]

After short investigation I think that key information may be that Message component is functional:
https://github.com/vuejs/vue-test-utils-jest-example/blob/8445f03efd7d6070dab568e07620004c8bdd9fe6/src/components/Message.js

[dvic]

Ah yes, that is probably it. I commented on #296 that the issue is probably still not solved.