Regression testing in Software Engineering - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is regression testing?

Regression testing is a type of software testing that ensures new code changes do not break or negatively affect existing features.

beginner

Why is regression testing important in machine learning projects?

It helps confirm that updates to data processing or model code do not cause unexpected errors or reduce model performance.

intermediate

Name one common method to automate regression testing.

Using automated test scripts that run predefined tests after each code change to quickly detect issues.

intermediate

How does regression testing differ from unit testing?

Unit testing checks small parts of code individually, while regression testing checks that the whole system still works after changes.

beginner

What is a regression test suite?

A collection of test cases designed to verify that software features continue to work correctly after changes.

What is the main goal of regression testing?

A To write new features

B To improve user interface design

C To check if new code breaks existing functionality

D To test hardware compatibility

Regression testing ensures that new code changes do not break existing features.

When is regression testing usually performed?

A After code changes or bug fixes

B Before any code is written

C Only at the end of a project

D Only during user acceptance testing

Regression testing is done after code changes to verify nothing else is broken.

Which of these is a benefit of automating regression tests?

A Slower feedback on bugs

B Manual effort increases

C Less test coverage

D Faster detection of issues

Automation speeds up testing and helps find problems quickly.

Regression testing is most closely related to which testing type?

A Integration testing

B Performance testing

C Security testing

D Exploratory testing

Regression testing often includes integration tests to check combined parts still work.

What does a regression test suite contain?

A Only new test cases

B Test cases for existing features

C Only performance tests

D Only user interface tests

A regression test suite includes tests for existing features to ensure they still work.

Explain regression testing and why it is important in software and machine learning projects.

Think about how changes might break things and why testing again helps.

Describe how automated regression testing can improve software development.

Consider the benefits of running tests automatically after each change.