Unit Testing

Question 1

What does setup in nunit do?

Answer 1

It is used to provide a set of functions that are performed just before each test method is called

Question 2

What are the three parts of a unit test

Answer 2

Arrange, Act, Assert

Question 3

What are the characteristics of a good unit test

Answer 3

Fast: Takes little time to run.

Isolated: have no dependencies on any outside factors.

Repeatable: consistent with its results.

Self-Checking: automatically detect if it passed or failed.

Timely: should not take a long time to write.

Question 4

What is the TDD cycle?

Answer 4

Fail, Pass, Refactor

Question 5

What advantages of using TDD?

Answer 5

Better program design and code quality, reduces time required for project development, easier maintenance

Question 6

If a Nunit class has a constructor, when does it run?

Answer 6

They only run once per test class. Test run with any order, usually alphabetically by default.

Question 7

What does the [TestCaseSource] attribute do?

Answer 7

Uses a reference field, method or property that has test arguements that can be applied to multiple parameterized test methods.

Question 8

What are the pitfalls of doing TDD?

Answer 8

You might have to rewrite code that doesn’t work anymore the further you go. You might end up with redundant tests over simple functionality