Debug Node.js Unit Tests

Debugging our unit tests is very important. There are a few techniques for doing that.

Run a single test

Isolating a single test allows us to focus on it and make sure the issue we are debugging is indeed caused by this test. Jasmine provides the fit capability for focusing on a single test and only running it, skipping all the rest.

fit('this is the only test that will run', () => {...})

It works for multiple instances of fit too. See the example below.

fit('this is the only test that will run', () => {...})
fit('this is the only other test that will run', () => {...})

Using the console.log

The console.log (and its sibling methods info, table, …) allows us to log out states and markers at various ...