What are some common JavaScript testing errors?

What are some common JavaScript testing errors I should be aware of?

Some common JavaScript testing errors include not properly mocking dependencies, ignoring asynchronous code, and failing to test edge cases.

Can you explain why mocking dependencies is important?

Mocking dependencies is crucial because it isolates the unit of code being tested, ensuring that tests are reliable and not affected by external factors.

What about asynchronous code? How can it lead to errors?

Asynchronous code can lead to errors if not handled properly, such as not waiting for promises to resolve, which can result in tests passing or failing unexpectedly.

What are edge cases, and why should I test them?

Edge cases are scenarios that occur at the extreme ends of input ranges. Testing them ensures your code handles unexpected or rare situations gracefully.