The following trigger automatically closes cases when a work order linked to the case is
marked Closed. It saves support agents from having to manually close a case after the related work
is complete.
If a case has multiple work orders, the trigger fires the first time any related work
order is marked
Closed.
You
can set up Apex unit tests in the developer console to scan your code for any issues. To
keep things running smoothly, Salesforce requires at least three-quarters of your Apex
code lines to be covered by tests. The following unit test applies to this
trigger.