What are the differences between unit testing and integration testing?

What are the differences between unit testing and integration 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 module that combines multiple functions to process user input and return a result.

Which one should I prioritize in my development process?

It's generally recommended to prioritize unit testing first, as it helps catch bugs early in individual components. Integration testing is crucial afterward to ensure that the components work together as expected.

Are there any tools you recommend for these tests?

For unit testing, popular tools include JUnit for Java and pytest for Python. For integration testing, you might consider using Postman for API testing or Selenium for web applications.