Integration testing patterns in Node.js - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the main goal of integration testing?

To verify that different parts of the application work together correctly as a group, not just individually.

intermediate

Describe the 'Big Bang' integration testing pattern.

All components are combined at once and tested together. It is simple but can make finding bugs harder.

intermediate

What is the 'Incremental' integration testing pattern?

Components are integrated and tested one by one or in small groups, making it easier to find and fix bugs early.

advanced

Explain the difference between 'Top-Down' and 'Bottom-Up' integration testing.

Top-Down starts testing from the top-level modules down to lower modules. Bottom-Up starts from lower modules up to higher ones.

intermediate

Why are stubs and drivers used in integration testing?

Stubs simulate lower-level modules when testing higher modules. Drivers simulate higher-level modules when testing lower modules. They help isolate parts during testing.

Which integration testing pattern tests all components together at once?

A Incremental

B Bottom-Up

C Top-Down

D Big Bang

Big Bang integrates all components at once for testing.

In which pattern do you test modules starting from the highest level?

A Bottom-Up

B Top-Down

C Big Bang

D Incremental

Top-Down starts testing from top-level modules down.

What is the purpose of a stub in integration testing?

A Simulate lower-level modules

B Simulate higher-level modules

C Replace the database

D Run tests automatically

Stubs simulate lower-level modules to test higher modules.

Which pattern helps find bugs earlier by testing parts step-by-step?

A Top-Down

B Big Bang

C Incremental

D Bottom-Up

Incremental testing integrates and tests parts gradually.

Drivers in integration testing are used to:

A Simulate higher modules

B Manage test data

C Simulate lower modules

D Automate deployment

Drivers simulate higher-level modules when testing lower modules.

Explain the main differences between Big Bang and Incremental integration testing patterns.

Think about how many parts you test together and when bugs are found.

Describe how stubs and drivers help during integration testing.

Imagine you want to test one part but others are missing or incomplete.