eslint: Having .eslintrc in the root dir causes eslint tests to fail

What version of ESLint are you using? 2.10.2 What did you do? I cloned the eslint repo and ran tests. What did you expect to happen? No errors. What actually happened? A few errors (about 70 or so).

I think I might be the only one that has such a troubling configuration, because I’ve already created a few PRs to other quite popular repos, which added "root": true to the .eslintrc config file.

The problem is this: I have a “global” .eslintrc file that sits in the root dir. So every project that uses eslint and doesn’t have "root": true set is also using my “global” config. It turns out that eslint itself has this problem, or rather eslint tests 😄

Changing the name of my “global” config file to something random solved the problem (all tests passed).

The simplest way to reproduce this is to create an .eslintrc file in the root dir with this content:

{
  "env": {
    "es6": true
  }
}

For me this caused 13 errors to emerge, for example:

  1) Config findLocalConfigFiles() should return an empty array when an .eslintrc file is not found:
     AssertionError: expected [ 'D:\\.eslintrc' ] to have a length of 0 but got 1

and

  6) Config getConfig() should merge configs when local .eslintrc overrides parent .eslintrc:

      AssertionError: expected { es6: true, node: true } to deeply equal { node: true }
      + expected - actual

       {
      -  "es6": true
         "node": true
       }