18 Trigger Scenario | Before Delete | Custom Validation in Apex Trigger | try & catch in Test Class

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[@mchan9424]

thank you so much sir!

[@SanjayGuptaTechSchool]

Keep watching

[@samsir8317]

Sir plzz upload more videos on LWC

[@TheegalaNaveenkumar08]

Tq

[@mchan9424]

hi sir @sanjayGupta , why we should use trigger.old?

[@mchan9424]

still i cannot understand!

[@nikhiltripathi2760]

@@mchan9424 beacuse you are deleting record which is old

[@nikhiltripathi2760]

use false in last assertion method

[@mchan9424]

Suggestion: Below code is much simpler to understand for beginners
insert accList;
boolean exceptionThrown=false;
try
{
delete accList;
}
catch(exception e)
{
exceptionThrown=true;
System.assert(e.getMessage().contains('Warning!: Active Account can\'t be deleted!'), 'Exception was not thrwon');
}
Test.stopTest();
system.assertEquals(true, exceptionThrown);