When deploying Apex code to production, Salesforce requires that all Apex triggers have at least 1% code coverage and the overall code coverage must be at least 75%.
In this scenario:
The developer has a test class that covers 95% of the helper class.
The deployment fails because the trigger has 0% coverage.
The error message indicates that the trigger needs at least 1% coverage.
Solution:
Option A: Create a test class and methods to cover the Apex trigger.
Correct Action.
Write a test class that specifically tests the trigger's functionality.
Ensure that the trigger is executed within the test context.
This will increase the trigger's code coverage above the required 1%.
The helper class already has 95% coverage.
Increasing coverage on the helper class does not affect the trigger's coverage.
Option C: Remove the failing test methods from the test class.
Incorrect.
Removing test methods could reduce overall code coverage.
Does not address the issue of the trigger's coverage.
Option D: Run the tests using the 'Run All Tests' method.
Ineffective.
Running all tests does not change the fact that the trigger has 0% coverage.
The trigger must be covered by a test method.
Conclusion:
To successfully deploy the new Apex trigger and helper class, the developer should create a test class and methods that cover the Apex trigger, which is Option A.
Reference:
Writing Test Methods for Triggers
Deployment Requirements
Incorrect Options:
Option B: Increase the test class coverage on the helper class.
Ineffective.