Understanding the Scenario:
Trigger Definition:
trigger myTrigger on Contact (before insert) {
MyClass.myStaticMethod(trigger.new);
}
Test Class:
The test method calls MyClass.myStaticMethod directly.
Achieves 81% overall code coverage.
The trigger is not invoked during the test.
Key Points:
Code Coverage Requirements:
Minimum 75% Coverage: To deploy Apex code to production, all Apex classes and triggers must have at least 75% overall code coverage.
Trigger Coverage Requirement: All triggers must have some code coverage, meaning they cannot have 0% coverage.
Conclusion: Incorrect.
Option C:
Statement: The deployment fails because the Apex trigger has no code coverage.
Conclusion: Incorrect.
Best Practices:
Always Test Triggers: Ensure that your test methods perform operations that fire the triggers.
Example:
@isTest
public class MyTriggerTest {
static testMethod void testMyTrigger() {
Contact testContact = new Contact(LastName = 'Test');
insert testContact;
// Additional assertions can be added here
}
}
Use Assertions: While not causing deployment failure due to code coverage, assertions help validate that the code behaves as expected.
Reference:
Apex Developer Guide - Code Coverage
Deployment Guidelines
Implications for the Scenario:
Trigger Coverage:
Since the test method does not perform any operations that would fire the trigger (e.g., inserting a Contact record), the trigger myTrigger has 0% code coverage.
Overall Coverage:
Even though the classes achieve 81% coverage, the trigger's lack of coverage affects the deployment.
Deployment Outcome:
Deployment Fails: Because the trigger has 0% coverage, the deployment fails regardless of the overall coverage percentage.
Option Analysis:
Option A:
Statement: The deployment fails because no assertions were made in the test method.
Conclusion: Incorrect.
Option B:
Statement: The deployment passes because both classes and the trigger were included in the deployment.
Conclusion: Correct.
Option D:
Statement: The deployment passes because the Apex code has the required 75% code coverage.