SF-PD2 Testing, Debugging, and Deployment Practice Question
A developer wants to ensure that their Apex code is tested against a specific set of data that is consistent across all sandbox environments. What is the best way to achieve this?
⚠ Common exam trap
Candidates often confuse @testSetup with traditional setup methods or assume data is created per test method, leading to redundant queries or data isolation issues.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use the @testSetup annotation to create data once per class.
Using @testSetup methods allows developers to create a baseline set of data that executes once for the entire test class. This ensures that every test method starts with the same data state, reducing setup redundancy and improving test reliability. This consistency is essential for debugging and ensuring that tests remain stable as the project grows and evolves over time.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Hardcode the data creation in each individual @isTest method.
Why it's wrong here
Repeating data creation logic in each method leads to bloated test classes and redundant code. It also makes maintenance difficult; if the data structure changes, you must update every method. @testSetup is designed specifically to solve this issue by centralizing the data preparation for the entire test class.
- ✓
Use the @testSetup annotation to create data once per class.
Why this is correct
The @testSetup annotation provides a clean, efficient way to define common data once. When the test class runs, the setup method executes first, and its data is available for all test methods. This promotes code reuse and makes the tests more readable by separating setup from assertion logic.
- ✗
Query for data that already exists in the environment.
Why it's wrong here
Querying for existing data violates the principle of test isolation. If the environment's data changes, your tests will fail unpredictably. Tests must be self-contained and create the necessary records themselves to guarantee that they are deterministic and that they pass regardless of the state of the org's actual data.
- ✗
Create a separate trigger to populate test data during deployment.
Why it's wrong here
Using a trigger for test data population is an anti-pattern that can lead to unintended side effects, such as infinite loops or hit governor limits. It also pollutes the production environment with unnecessary data. Test data should be managed strictly within the context of the test class itself.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Salesforce exam blueprint
This SF-PD2 practice question is part of Courseiva's free Salesforce certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SF-PD2 exam.