chore(test): enable mongoid use db config from ENV (#155)

* chore(test): enable mongoid use db config from ENV

* doc: add change log record

* fix: missing comma in changelog

Author: crazyoptimist

CHANGELOG.md

@@ -5,6 +5,7 @@
 * [#145](https://github.com/slack-ruby/slack-ruby-bot-server/pull/145): Added support for Ruby 3.1 - [@dblock](https://github.com/dblock).
 * [#146](https://github.com/slack-ruby/slack-ruby-bot-server/pull/146): Added support for MongoDB 5.0 - [@dblock](https://github.com/dblock).
 * [#147](https://github.com/slack-ruby/slack-ruby-bot-server/pull/147): Added support for PostgreSQL 14 - [@dblock](https://github.com/dblock).
+* [#155](https://github.com/slack-ruby/slack-ruby-bot-server/pull/155): Enable mongoid to get connection URI from ENV for test - [@crazyoptimist](https://github.com/crazyoptimist).
 * Your contribution here.
 
 #### 1.2.1 (2022/03/06)

spec/database_adapters/mongoid/config/mongoid.yml

@@ -11,9 +11,7 @@ development:
 test:
   clients:
     default:
-      database: bot-server_test
-      hosts:
-        - 127.0.0.1:27017
+      uri: <%= ENV["DATABASE_URL"] || 'mongodb://localhost' %>
   options:
     raise_not_found_error: false
     use_utc: true