Home > Glossary > Certified Tester Foundation Level > Regression Testing

📖 What is Regression Testing?

Regression Testing verifies that a recent code modification, such as a defect fix or new feature, has not adversely affected existing, unmodified functionality. It is typically automated due to the high volume of repeated tests.

🥋 Sensei Says:

"Any time code is changed or the environment changes, regression testing is needed. It's the safety net for maintenance and iterative development."

📚 Certification: Certified Tester Foundation Level (CTFL-v4.0)

🔑 What are the Key Concepts of Regression Testing?

▸ Detects unintended side-effects of changes.
▸ Often automated due to repetitiveness.
▸ Crucial for maintenance and iterative development.

🎯 How does Regression Testing appear on the CTFL-v4.0 Exam?

Selecting the appropriate testing when a new feature is added to an existing product.

Deciding what tests to automate first.

❓ Frequently Asked Questions

Why is regression testing often automated?

Because the same tests are run repeatedly after every change.

When is regression testing required?

After any code, environment, or configuration change.

Related Terms from Certified Tester Foundation Level

Moderator Control Flow Graph Checklist-Based Testing Defect (Bug) Exit Criteria Non-functional Testing

📝 Related Study Guides

Study Guide 10 min read

How to Pass ISTQB CTFL v4.0 on Your First Try

To pass the ISTQB CTFL v4.0 on your first try, focus heavily on Chapter 4 (Test Analysis and Design), which accounts for 27.5% of the exam. Combine the official syllabus with high-volume practice exams, aiming for a consistent 80% score. Dedicate 4-6 weeks of study, prioritizing active recall over passive reading.

Deep Dive 10 min read

Equivalence Partitioning vs Boundary Value Analysis: ISTQB

Equivalence Partitioning (EP) divides input data into groups that should be processed identically, reducing test cases by testing one representative value per group. Boundary Value Analysis (BVA) complements this by testing the edges of these partitions, where defects frequently occur, ensuring the system handles limits and transitions correctly.

Study Guide 8 min read

What is Software Testing? ISTQB CTFL v4.0 Chapter 1 Deep Dive

Software testing is a comprehensive process that involves both static and dynamic activities designed to evaluate software quality. It aims to find defects, verify requirements, build confidence in the system, and provide critical information to stakeholders for decision-making.