ISTQB Foundation Level Certification - System Integration Testing

Chapter 2: Testing Throughout the SDLC

Section 2.2: Test Levels and Test Types

2.2.1 Test Levels

• System Integration Testing: Focuses on integration between two or more systems.

System Integration Testing Explained

• Involves testing interfaces, interactions, and communications between systems.
• Not mandatory for all applications, but essential for applications involving multiple systems.

Importance

• Trending Technologies: Many modern applications combine multiple systems.
• Interface Testing: Tests how systems interact with each other, including external services.
• Examples: Embedding Google Maps in Zomato for delivery tracking.

Testing Environment

• Suitable Environments: Should mimic operational environments as closely as possible.
• Challenges: Can't test in production due to cost and feasibility constraints.

Examples of System Integration

1. Software-Software

   • Example: Amazon's integration with Visa, MasterCard, and various banks for payments.
   • COTS Products: Commercial off-the-shelf products used as services within larger applications.

2. Software-Hardware

   • Embedded Products: Examples include smartphones, smartwatches, and elevators.
   • IoT Devices: Internet of Things devices are a mix of software and hardware.

3. Hardware-Hardware

   • Heavy Machinery: Examples include cranes, roller coasters, and JCBs.
   • No Software Involvement: Purely mechanical systems working together.

Conclusion

• System Integration Testing is crucial for ensuring different systems work together seamlessly.

Next Steps: Continue exploring different test levels and types as per the ISTQB syllabus.

Feedback and Queries: Open for comments and questions.

Happy Learning!