You can open this repository in Codesandbox by going to the following link where you add your Github username at the end: https://codesandbox.io/s/github/redi-react-fall-2020/03-exercises-array-methods-## Your github username ##
If you opened this repo in code-sandbox, the tests are rerun everytime you save and you can see if you have passed a tests in the tests section.
You can also open the console in Codesandbox to see the output of your functions.