Node.js: Testing and Code Quality

Question 1

What does code quality consist of?

Answer 1

Quality consists of those product features that meet the needs of customers and thereby provide product satisfaction.

Quality consists of freedom from deficiencies.

Question 2

What does “functionality” mean in the context of code quality?

Answer 2

It means that the code does what it’s supposed to.

Question 3

What does “deficiency-free” mean in the context of code quality?

Answer 3

It means that the code has no failings or shortcomings.

Question 4

What are the two ways that the concept of freedom from deficiency can be generalized?

Answer 4

Usefulness and maintainability.

Question 5

What is “useful” code?

Answer 5

The more flexible and reusable the code is, the more useful it is.

Question 6

What are the three questions that can determine if code is maintainable or not?

Answer 6

1. Can you maintain the code?
2. Can someone else maintain it without help?
3. Can someone else read and understand design and intent?

Question 7

What is the most certain way to determine whether code is maintainable?

Answer 7

1. Peer review – can the reviewer understand design and intent?

Question 8

How do you improve the maintainability of your code?

Answer 8

1. Consistent formatting and logical naming – helps reading
2. Clear comments and functional docs – describes intent
3. Modular components – reusable code