# Contributing

Thanks for your interest in PaperTrail!

Ask usage questions on Stack Overflow:
https://stackoverflow.com/tags/paper-trail-gem

**Please do not use github issues to ask usage questions.**

On github, we appreciate bug reports, feature
suggestions, and especially pull requests.

Thanks, and happy (paper) trails :)

## Reporting Bugs

Please use our [bug report template][1].

## Development

Testing is a little awkward because the test suite:

1. Supports three major versions of rails: 3, 4, 5
1. Contains a "dummy" rails app with three databases (test, foo, and bar)
1. Supports three different RDBMS': sqlite, mysql, and postgres

Test against rails 3:

```
bundle exec appraisal ar3 rake
```

Run tests with sqlite:

```
# Create the appropriate database config. file
rm test/dummy/config/database.yml
DB=sqlite bundle exec rake prepare

# If this is the first test run ever, create databases
cd test/dummy
RAILS_ENV=test bundle exec rake db:setup
RAILS_ENV=foo bundle exec rake db:setup
RAILS_ENV=bar bundle exec rake db:setup
cd ../..

# Run tests
DB=sqlite bundle exec rake
```

Run tests with mysql:

```
# Create the appropriate database config. file
rm test/dummy/config/database.yml
DB=mysql bundle exec rake prepare

# If this is the first test run ever, create databases
cd test/dummy
RAILS_ENV=test bundle exec rake db:setup
RAILS_ENV=foo bundle exec rake db:setup
RAILS_ENV=bar bundle exec rake db:setup
cd ../..

# Run tests
DB=mysql bundle exec rake
```

Run tests with postgres:

```
# Create the appropriate database config. file
rm test/dummy/config/database.yml
DB=postgres bundle exec rake prepare

# If this is the first test run ever, create databases.
# Unlike mysql, use create/migrate instead of setup.
cd test/dummy
DB=postgres RAILS_ENV=test bundle exec rake db:create
DB=postgres RAILS_ENV=test bundle exec rake db:migrate
DB=postgres RAILS_ENV=foo bundle exec rake db:create
DB=postgres RAILS_ENV=foo bundle exec rake db:migrate
DB=postgres RAILS_ENV=bar bundle exec rake db:create
DB=postgres RAILS_ENV=bar bundle exec rake db:migrate
cd ../..

# Run tests
DB=postgres bundle exec rake
```

[1]: https://github.com/airblade/paper_trail/blob/master/doc/bug_report_template.rb