The most important lesson from yesterday: programming requires PATIENCE and SELF AWARENESS. I've learned one of the most important lesson in my (programmer) life. Don't get upset just because you don't know why something doesn't work. There are tons of things that could went wrong really and sometimes these are other peoples mistakes. Take a deep breath, go for a walk and start over with a fresh mind.
it 'has a property species that equals cat', -> expect cat .to.have.property 'species' .which.is.a 'string' .and.is.eql 'cat'
Then he produces the code to pass that test, something like that:
module.exports = species : 'cat'
It may seem easy but I've spent hours to try to pass this kind of tests. Moreover, there are some issues like, should I use ":" or "=" in particular situation? Tests force very organized and precise thinking which is very difficult, yet effective way of programming, I believe.