Avajs bug report

See avajs/ava#1319

Testing

1. Clone the repo

git clone https://github.com/wasting-light/avajs-bug-report-x89

2. Install dependencies

npm install

3. Testing

If the tests are inside test folder, it works:

npm run working

If the tests are not inside test folder or is inside a subfolder (test/unit), it doest not work:

npm run not-working