Integration testing in software engineering

1. Integration Testing in Software
Engineering
• Understanding Its Role, Techniques, and
Importance
• Presented by: [Your Name]
• Date: [Date]

2. What is Integration Testing?
• - Combines and tests individual units/modules
as a group.
• - Goal: Detect interface defects.
• - Comes after Unit Testing and before System
Testing.

3. Why Integration Testing?
• - Ensures correct module interaction.
• - Detects interface defects.
• - Simulates real-world data flow.
• - Reduces integration risks.

4. Types of Integration Testing
• - Big Bang Integration
• - Top-Down Integration
• - Bottom-Up Integration
• - Sandwich/Hybrid Integration

5. Big Bang Integration
• - Pros: Quick, fewer resources.
• - Cons: Hard to isolate bugs; late issue
detection.

6. Top-Down Integration
• - Tests top modules first.
• - Uses stubs for lower modules.
• - Tests control flow early.

7. Bottom-Up Integration
• - Tests lower modules first.
• - Uses drivers for upper modules.
• - Tests foundational modules.

8. Sandwich Integration
• - Combines top-down and bottom-up
methods.
• - Balanced and flexible approach.

9. Tools for Integration Testing
• - JUnit (Java)
• - NUnit (.NET)
• - TestNG
• - Postman (API)
• - Selenium (UI)

10. Best Practices
• - Start with unit-tested modules.
• - Use stubs and drivers well.
• - Automate where possible.
• - Document tests.
• - Perform regression testing.

11. Challenges
• - Complex module data flow.
• - Stub/driver maintenance.
• - 3rd-party API integration.
• - Synchronization issues.

12. Summary
• - Validates module interaction.
• - Choose suitable strategies.
• - Plan and use tools wisely.

13. Q&A
• Any Questions?