Integration testing in Testing Fundamentals - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is integration testing?

Integration testing checks if different parts of a program work well together, like testing if puzzle pieces fit.

beginner

Why do we do integration testing after unit testing?

Because unit testing checks parts alone, and integration testing checks if those parts work together correctly.

intermediate

Name one common approach to integration testing.

One common approach is bottom-up testing, where testing starts from the smallest parts and moves up.

intermediate

What is a stub in integration testing?

A stub is a simple fake part that replaces a missing module to help test other parts.

beginner

How does integration testing help catch bugs?

It finds problems in how parts connect, like wrong data passed or timing issues, which unit tests might miss.

What does integration testing focus on?

A Testing individual parts separately

B Testing performance under load

C Testing the user interface only

D Testing how parts work together

Integration testing checks if different parts of the software work together correctly.

Which of these is NOT a type of integration testing?

A Top-down testing

B Bottom-up testing

C Unit testing

D Big bang testing

Unit testing tests parts alone, not their integration.

What is a stub used for in integration testing?

A To measure performance

B To replace a missing module

C To test the user interface

D To write test cases

A stub acts as a simple replacement for a missing module during testing.

When is integration testing usually performed?

A After unit testing

B Before unit testing

C After system testing

D Before requirements gathering

Integration testing is done after unit tests to check combined parts.

Which problem is integration testing most likely to find?

A Incorrect data exchange between modules

B Syntax errors in code

C User interface color issues

D Hardware failures

Integration testing finds issues in how modules share data or interact.

Explain in your own words what integration testing is and why it is important.

Think about how parts of a machine need to work together smoothly.

Describe two common approaches to integration testing and when you might use them.

Consider whether you start testing from small parts or big parts first.