This removes the following warnings.
```
test/application/bin_setup_test.rb:43: warning: ambiguous first argument; put parentheses or a space even after `/' operator
```
Currently, `bin/setup` test uses Gemfile of Rails. But this Gemfile is not a
file to be used in Rails application.
Add a Gemfile to Rails application that is created for test, it has been
modified to use the Gemfile.
- Avoided truncating all files if no ENV['LOGS'] specified
- Updated task to accept LOGS=all for truncating all files from log/ i.e. log/*log
- If no LOGS specified will truncates standard environment log files i.e. 'development,test,production'
- CHANGELOG & guide update added
- bin/setup test cases fixed
This PR introduces a key/value type store to Active Record that can be used for storing internal values. It is an alternative implementation to #21237 cc @sgrif @matthewd.
It is possible to run your tests against your production database by accident right now. While infrequently, but as an anecdotal data point, Heroku receives a non-trivial number of requests for a database restore due to this happening. In these cases the loss can be large.
To prevent against running tests against production we can store the "environment" version that was used when migrating the database in a new internal table. Before executing tests we can see if the database is a listed in `protected_environments` and abort. There is a manual escape valve to force this check from happening with environment variable `DISABLE_DATABASE_ENVIRONMENT_CHECK=1`.
