Testing ActiveRecord Finders
ActiveRecord provides a rich set of methods that are wrappers around SQL statements sent to your database. These methods are collectively referred to as finders. One great feature of ActiveRecord finders is that they can be composed, allowing you to express a compound statement like âbring me the most recently completed five large tasksâ as Task.where(status: completed).order("completed_at DESC").where("size > 3").limit(5).
You can even compose the finders if you extract them to their own methods in pieces:
| â | âclassâ Task < ActiveRecord::Base |
| â | |
| â | âdefâ self.completed |
| â | where(status: :completed) |
| â | âendâ |
| â | |
| â | âdefâ self.large |
| â | where(â"size > 3"â) |
| â | âendâ |
| â | |
| â ... |
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