Apex Intermediate Progress | ( Lessons)

Lesson: 04 | Testing Triggers when there is an exception

Apex Class

trigger PreventAccountDeletionTrigger on Account (before delete) {
    
    for (Account acc : Trigger.old) {
        if (acc.Active__c == 'Yes') {
            acc.addError('Cannot delete an active account.');
        }
    }
    
}

Apex Test Class

@isTest
public class PreventAccountDeletionTriggerTest {
    
    @testSetup static void setupTestData() {
        List<Account> accounts = new List<Account>();
        accounts.add(new Account(Name='Test Account 1', Active__c='No'));
        accounts.add(new Account(Name='Test Account 2', Active__c='Yes'));
        accounts.add(new Account(Name='Test Account 3', Active__c='No'));
        insert accounts;
    }
    
    @isTest static void testActiveAccountDeletion() {
        Test.startTest();
        
        List<Account> accountsToDelete = [SELECT Id FROM Account WHERE Name = 'Test Account 2'];
        try {
            delete accountsToDelete;
            System.assert(false, 'Active account should not have been deleted.');
        } catch (DmlException e) {
            System.assert(e.getMessage().contains('Cannot delete an active account.'), 'Error message not displayed correctly.');
        }
        
        Test.stopTest();
    }
    
    @isTest static void testInactiveAccountDeletion() {
        Test.startTest();
        
        List<Account> accountsToDelete = [SELECT Id FROM Account WHERE Name = 'Test Account 1' OR Name = 'Test Account 3'];
        delete accountsToDelete;
        
        Test.stopTest();
    }
}

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Apex Intermediate

A. Apex DML Operations (8 lessons)

B. Apex Classes (17 lessons)

C. Apex Triggers (9 lessons)

D. Apex Exceptions (11 lessons)

E. Asynchronous Apex (6 lessons)

F. SOSL (10 lessons)

G. Testing Apex (9 lessons)

H. Apex Fast Recap (142 lessons)

I. Build Apex Coding Skills (64 lessons)

J. Miscellaneous (17 lessons)

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Lesson: 04 | Testing Triggers when there is an exception

Apex Class

Apex Code

Apex Test Class

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Apex Intermediate

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Lesson: 04 | Testing Triggers when there is an exception

Apex Class

Apex Intermediate