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Test-Driven Development (TDD) Basics Quiz

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Question 1/15

Why is the refactoring step important in the TDD cycle?

Select your answer

To increase test run speeds.

To remove tests that add no value.

To merge tests with production code.

To improve code structure and quality after ensuring the test is passed.

Question 2/15

What should happen immediately after a developer writes a failing test in TDD?

Select your answer

Fix the test so that it passes without changing the code.

Ignore the failing test and write code for other parts.

Write the minimum amount of code necessary to pass the test.

Make all other tests fail.

Question 3/15

How does TDD help in maintaining backward compatibility?

Select your answer

By ensuring existing functionality is not broken when adding new features.

By encouraging manual testing before deployment.

By logging all backward compatibility issues to be addressed later.

By automatically removing outdated test cases.

Question 4/15

What is the primary goal of test-driven development (TDD)?

Select your answer

To reduce the number of defects in the final product.

To increase the number of features in the product.

To speed up the development process.

To write documentation before coding.

Question 5/15

Which type of testing is NOT directly a focus of TDD?

Select your answer

Regression testing

Performance testing

Unit testing

Integration testing

Question 6/15

What is an anti-pattern in the context of TDD?

Select your answer

Writing tests solely for legacy code review.

Testing only after full implementation is completed.

Adopting test frameworks incompatible with the team.

Refactoring every test case after implementation.

Question 7/15

Which statement best describes 'refactoring' in TDD?

Select your answer

Improving code structure and readability without changing its functionality.

Rewriting failing tests to pass with the current code.

Removing tests that fail to avoid test suite noise.

Changing test outcomes without altering code behavior.

Question 8/15

Why is continuous integration beneficial when used alongside TDD?

Select your answer

It manages version control automatically without developers.

It provides instant feedback on test outcomes whenever changes are made in the codebase.

It allows tests to be run only once before deployment.

It increases deployment time by aggregating tests in batches.

Question 9/15

In TDD, what should be done if a test continues to fail after writing sufficient code?

Select your answer

Ignore the test as long as the program works.

Comment out the test to avoid test suite failures.

Consider the test as unnecessary and delete it.

Review the test and code logic for errors.

Question 10/15

How does TDD help in achieving clean code?

Select your answer

By focusing strictly on functional programming practices.

By eliminating the need for comments through comprehensive tests.

By ensuring tests cover only the main business logic.

By forcing frequent refactoring to improve code quality and remove redundancies.

Question 11/15

When a test first fails in the TDD cycle, what does this indicate?

Select your answer

The test is incorrect and should be fixed immediately.

The requirements for the application have changed.

No code exists yet to fulfill the test's requirements, which is expected.

The code is reliable, and the test should be disregarded.

Question 12/15

What is the primary focus of tests in the TDD approach?

Select your answer

Decreasing network traffic

Performance profiling

Verification of code behavior

Streamlining user interfaces

Question 13/15

In the context of TDD, what is a 'unit' test?

Select your answer

A test that covers an entire application functionality.

A test that only runs in isolation in specific hardware environments.

A test that covers a single function or method.

A test that always runs after integration tests.

Question 14/15

What is one common benefit of applying TDD to software development?

Select your answer

It ensures that all code is 100% bug-free.

It often leads to more modular and maintainable code.

It reduces the requirement for team collaboration.

It eliminates the need for integration testing.

Question 15/15

How does TDD contribute to regression testing?

Select your answer

By maintaining a suite of tests that ensure existing features continue to work as the code evolves.

By creating throwaway tests after each development cycle.

By focusing only on performance improvements.

By providing detailed user feedback reviews.

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