I installed drush via composer, initially drush 8 was installed.
I then try to run tests via drush test-run command,unfortunately I get the following output indicating the command is not found.
(16:38 vagrant@devbox .composer) > drush test-run help The drush command 'test-run help' could not be found. Run
drush cache-clear drushto clear the [error]
Installing version 7 via composer gives same output. Clearing the drush cache did not help, am I missing something?