Salesforce Platform Developer Practice Exam

What type of test class should a developer write to ensure Apex coverage?

1. Unit tests only cover individual classes

2. Test classes should align with all triggers

3. Only classes that contain specific operations need testing

4. All classes and triggers require a minimum of 75% coverage

The correct answer is: All classes and triggers require a minimum of 75% coverage

To ensure adequate Apex coverage in Salesforce, writing test classes that cover all classes and triggers is essential. This is because Salesforce enforces a requirement that all Apex code must achieve at least 75% code coverage to be deployed to a production environment. When a developer writes test classes, the goal is not only to meet this coverage requirement but to ensure that the logic within these classes and triggers operates as intended across a wide range of scenarios. This practice also helps in identifying any potential issues before moving code to production. The specific requirement of 75% coverage means that the developer should aim to write comprehensive unit tests for both classes and triggers, ensuring that as much of the code as possible is executed during testing. This could involve testing various scenarios, including positive, negative, and edge cases, to ensure robustness. By ensuring coverage for all classes and triggers, a developer can confidently deploy code, knowing that it has been validated through testing. This approach also aligns with best practices for software development, where thorough testing is an integral part of the development process.