How can I effectively implement unit testing for error handling?

How can I effectively implement unit testing for error handling?

To implement unit testing for error handling, start by identifying the error scenarios in your code. Then, write test cases that simulate these errors.

What are some common error scenarios I should consider?

Common error scenarios include invalid input, network failures, and exceptions thrown by external libraries. Make sure to cover these in your tests.

Can you give me an example of a test case for invalid input?

Sure! For a function that processes user input, you could write a test case that passes an empty string and asserts that it throws a specific exception.

How do I ensure my tests are comprehensive?

Use code coverage tools to analyze which parts of your code are tested. Aim for high coverage, but also review edge cases manually.