RuntimeError: can't modify frozen Array when running rspec in rails 5.1

Question

I recently upgraded to Rails 5.1 from v4.3 and am now getting this error when running tests:

An error occurred while loading 

./spec/controllers/admin/capac         


        

Answer 1

In case this helps anyone in future, it was database connection issue (Postgresql in my case). Head over to config/database.yml file and supply username: and password: < default is toor>

Add this in the development: group.