CAD FREE CAD Test-Driven Development (TDD) Questions and Answers 2

Question 1

In TDD, what is the primary purpose of the refactoring step after a test passes?

Accepted Answer

To improve code structure without changing behavior

Answer

To add new functionality to the codebase

Answer

To write additional test cases for edge cases

Answer

To remove passing tests that are no longer needed

Question 2

Which of the following best describes the 'Arrange-Act-Assert' pattern in TDD?

Accepted Answer

A pattern where you set up preconditions, execute the action, and verify the outcome

Answer

A project management framework for agile teams

Answer

A method for prioritizing which tests to write first

Answer

A deployment strategy for test environments

Question 3

What is a 'test double' in the context of TDD?

Accepted Answer

An object that stands in for a real dependency during testing

Answer

A test that validates two requirements simultaneously

Answer

A duplicate test written to increase code coverage

Answer

A secondary test suite run in a different environment

Question 4

Why should TDD practitioners avoid writing multiple failing tests before making any of them pass?

Accepted Answer

It makes it unclear which code change satisfies which requirement

Answer

It violates the single responsibility principle

Answer

It increases compilation time significantly

Answer

It prevents the use of continuous integration tools

Question 5

In TDD, what does 'triangulation' refer to?

Accepted Answer

Adding more specific test cases to drive a more general implementation

Answer

Running tests across three different environments simultaneously

Answer

Splitting a large class into three smaller components

Answer

Measuring code coverage from three different metrics

Question 6

What is the recommended approach when a TDD practitioner discovers a bug in production code?

Accepted Answer

Write a failing test that reproduces the bug before writing the fix

Answer

Fix the bug immediately and then run existing tests

Answer

Rewrite the entire module using TDD from scratch

Answer

Add the bug to the backlog and address it in the next sprint