How do I troubleshoot unit tests in Node.js?

How do I troubleshoot unit tests in Node.js?

To troubleshoot unit tests in Node.js, start by checking the error messages in your test output. What errors are you seeing?

I'm getting a 'test failed' message, but I don't know why.

Check if the test case is correctly set up. Ensure that the function being tested is returning the expected output. Can you share the test code?

Sure, here's my test code: test('adds 1 + 2 to equal 3', () => { expect(add(1, 2)).toBe(3); }); But it fails.

It looks like the add function might not be defined correctly. Can you show me the implementation of the add function?

Here's the implementation: function add(a, b) { return a - b; }.

The issue is in your add function; it should return a + b instead of a - b. Fix that and try running the test again.