/jest-snapshot-custom-paths-bug-reproduction

Reproduction for https://github.com/facebook/jest/issues/7257

Primary LanguageJavaScript

Bug Demonstration - Custom Snapshot Resolver

The purpose of this repo is to reproduce the issue described here [jest-snapshot] Custom Snapshot Directories confuse the Obsolete Snapshot Logger #7257

Reproduction steps

  1. clone this repo
  2. yarn install
  3. Run the tests:
$ yarn test
yarn run v1.12.1
$ cp -R src/ dist; jest
 PASS  dist/__tests__/Link.react.test.js
  ✓ Link changes the class when hovered (18ms)

Snapshot Summary
 › 2 snapshot files obsolete from 2 test suites. To remove them all, run `yarn test -u`.

Test Suites: 1 passed, 1 total
Tests:       1 passed, 1 total
Snapshots:   2 files obsolete, 3 passed, 3 total
Time:        1.264s
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.yarn test`
  1. Notice: the tests pass, but also it says there are 2 snapshot files obsolete. If you subsequently run yarn test -u it will delete these files, and then running yarn test again, will re-create them, then running yarn test again will once again declare that 2 snapshot files are obsolete.

Expected behavior

I would expect it to not consider these files obsolete, and to not have this toggling behavior of deleting & recreating all the snapshots.

Key Notes

  • Pretends it's using a pre-processor/separate compile phase like tsc by copying the files into dist/ before running the tests against the dist/ directory