Verification, validation, and unit testing - Lecture

Question 1

What is verification?

Answer 1

The process of proving that the software conforms to its specified functional and non-functional requirements.

Question 2

What is validation?

Answer 2

The process of proving that the software meets the customer’s true requirements, needs, and expectations.

Question 3

What is the purpose of unit testing?

Answer 3

Testing small parts of the code (like functions/methods) to make sure they work.
Example: Testing a function that adds two numbers.

Question 4

What is the purpose of integration testing?

Answer 4

Testing how different parts of a program work together.
Example: Checking if the login and registration systems in a website work together without errors.

Question 5

What is the purpose of system testing?

Answer 5

Testing the whole program to ensure it does what it is supposed to do.
Example: Testing a video game to ensure all features, like graphics and controls, work correctly.

Question 6

What is the purpose of acceptance testing?

Answer 6

Final testing to see if the software meets what users and the business want.
Example: Letting real users try a new mobile app to see if it meets their needs and expectations.

Question 7

What is regression testing?

Answer 7

Regression testing is the practice of retesting a software application to ensure that recent changes haven’t introduced new issues or broken existing functionality.

Question 8

What does statement coverage do for us?

Answer 8

It ensures that each line of code is executed at least once during testing.
Statement coverage = (Number of executed statements / total nbr of statements) + 100%

Question 9

What does branch coverage do for us?

Answer 9

It focuses on testing every possible branch or decision point in the code. It helps identify conditions that can lead to different execution branches within the code.
Branch coverage = (Nbr of executed branches / total nbr of branches) * 100%

Question 10

What does path coverage do for us?

Answer 10

It aims to test every possible path through the code. This is a more in-depth form of white box testing, ensuring that all combinations of branches and conditions are exercised.
Path coverage = (nbr of executed paths / total nbr of paths) * 100%

Question 11

Name three black box testing techniques

Answer 11

Boundary value analysis
Equivalence partitioning
Decision table testing

Question 12

What is a test suite?

Answer 12

A test suite is a collection of test cases or test classes grouped
together for testing a specific part of the code or a specific
functionality.