Unit Test

Unit testing with Trap.apex is easy. Here is how you do it in the unit test.

@isTest
private static void contextTest() {
    // test code

    Trap.getInstance().start(Trap.Event.BeforeInsert, null, new List{ new Case() });

    // test code
}

Pass the trigger event, old list and new list into the Trap.start or TriggerHandler.run, and the same code will be executed completely from the data you passed in, not from Salesforce trigger context.