SALESFORCE-PD1 Testing Debugging And Deployment Practice Question
A developer runs unit tests in the Developer Console and notices that one test method fails when run as part of the entire test class, but passes successfully when run in isolation. What is the most likely cause of this issue?
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
✓
Test data pollution caused by another test method modifying shared records without resetting state.
Test pollution occurs when test data modified or created by one test method is not properly cleaned up, affecting subsequent test methods.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The Developer Console caches old test results automatically.
Why it's wrong here
The console re-runs tests live and does not serve stale cached results on demand.
- ✗
The test class lacks the @isTest annotation.
Why it's wrong here
Without @isTest, the class would not compile or execute as a test.
- ✗
Governor limits are permanently exhausted for the entire session.
Why it's wrong here
Governor limits reset per test method execution.
- ✓
Test data pollution caused by another test method modifying shared records without resetting state.
Why this is correct
Shared state and lack of data isolation between methods in the same class can cause dependent test failures.
About these practice questions
Courseiva writes every SALESFORCE-PD1 question from scratch — 493 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Salesforce exam blueprint
This SALESFORCE-PD1 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 SALESFORCE-PD1 exam.