11 - Defensive Design and testing

• Computing
• Upper Secondary (Key Stage 4)
• GCSE

Defensive Design and Testing

Revision

Defensive Design
and Testing

Comments in code are primarily for aesthetic purposes.

1. True
2. False

Which of the following best describes defensive design?

1. Designing software to protect against cyber attacks
2. Designing software to anticipate and handle unexpected situations
3. Designing software with a focus on user interface aesthetics
4. Designing software without considering potential errors

What is the primary purpose of commenting in code?

1. To explain the purpose and functionality of the code
2. To make the code run faster
3. To hide the code from other developers
4. To add unnecessary complexity to the code

Which of the following is NOT a reason for testing code?

1. To find and fix bugs
2. To ensure the code runs quickly
3. To ensure the code is maintainable
4. To verify the code meets the requirements

Explain why defensive design is important in software development.

A function accepts a number input between 1 and 10.
Normal Data testing would involve entering a number like 5.
Provide an example of boundary testing and explain why it fits that description.

A function accepts a number input between 1 and 10.
Normal Data testing would involve entering a number like 5.
Provide an example of invalid data testing and explain why it fits that description.

A function accepts a number input between 1 and 10.
Normal Data testing would involve entering a number like 5.
Provide an example of erroneous data testing and explain why it fits that description.

An iterative test is performed when _________

Final testing is performed when __________

Why would we iteratively test?

What are we looking for in logic testing?

What are we looking for in syntax testing?

Create a test plan

Create a test plan for a calculator, using all the concepts we've talked about today

Calculator code

https://create.withcode.uk/python/QkW