## Usage

It requires two environment variables:
* *TEST_WORKERS* - Total number of workers or batches. It uses to identify a total number of batches, that would be run in parallel. Default: 1
* *TEST_WORKER_NUM* - Current worker id. The value is between 1 and *TEST_WORKERS*

```shell
$ bundle exec rake test:parallel TEST_WORKERS=5 TEST_WORKER_NUM=1
```