test: &test
  adapter: postgresql
  database: activerecord_views_test
  min_messages: warning
development:
  <<: *test
production:
  <<: *test

test: &test
  adapter: postgresql
  database: activerecord_views_test
  min_messages: warning
  advisory_locks: <%= !Rails.version.start_with?('6.0.') %>
development:
  <<: *test
production:
  <<: *test

Disable migration advisory locks on Rails 6.0
Disable migration advisory locks on Rails 6.0

The connection for the lock prevents Combustion from
dropping and re-creating the test database.

This seems to only be a problem in Rails 6.0
and is fixed in Rails 6.1.
