What are the differences between integration testing and unit testing?

What are the differences between integration testing and unit testing?

Unit testing focuses on testing individual components or functions in isolation, while integration testing checks how these components work together.

Can you give me examples of each type of testing?

Sure! An example of unit testing is testing a single function that calculates the sum of two numbers. Integration testing might involve testing a complete user registration process that includes multiple components like the database and user interface.

Why is integration testing important?

Integration testing is crucial because it helps identify issues that occur when different modules interact, ensuring that the system works as a whole.

How do I decide which type of testing to use?

It depends on your goals. Use unit testing for early bug detection in individual components, and integration testing to ensure that combined components function correctly.