Jest doesn't detect tests if root path contains a dot

[ghost]

Do you want to request a feature or report a bug?
Bug (regression)

What is the current behavior?
Jest 19.0.2:

~/.project $ npm test

> project@1.0.0 test /Users/work/.project
> jest

No tests found
  2 files checked.
  roots: /Users/work/.project - 2 matches
  testMatch: **/__tests__/**/*.js?(x),**/?(*.)(spec|test).js?(x) - 0 matches
  testPathIgnorePatterns: /node_modules/ - 2 matches

What is the expected behavior?
Jest 18.1.0:

~/.project $ npm test

> project@1.0.0 test /Users/work/.project
> jest

 PASS  __tests__/sample.test.js
  test
    ✓ passes (2ms)

Test Suites: 1 passed, 1 total
Tests:       1 passed, 1 total
Snapshots:   0 total
Time:        0.925s
Ran all test suites.

Please provide your exact Jest configuration and mention your Jest, node, yarn/npm version and operating system.

• macOS 10.12.3 (used to manually run examples above)
  ** Jest: 19.0.2
  ** node: 7.4
  ** npm: 4.0.5

• Debian 8 (https://github.com/Strider-CD/strider)
  ** Jest: 19.0.2
  ** Jest configuration: default
  ** node: 7.5
  ** npm: 4.1.2

Note
The regression is critical for Strider based continuous integration setup. Strider uses ~/.strider as its working folder.

[cpojer]

This will be fixed in the next release next week: #3006

[JohnAlbin]

This was working in Jest v22.4.4 and is broken again in the latest Jest v23.

[SimenB]

Can you open up a new issue with a reproduction?

[SimenB]

That said, the test in #3006 is failing for me locally, need to investigate that

[github-actions]

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