You will need to setup for this week's exercises. Use the prep from this week to install Jest. Note: You must install Jest in the root of this repo.

console.log is most often used as a debugging tool. We use to inspect the state of our program during runtime. We can use console.assert to write assertions: however, it is not very effective for writing large test suites.

Your first task is to rewrite the assertions from week-3/implement using Jest syntax. You will also need to update the filenames in week-3/implement so they have a .test.js extension and not just a .js extension. Keep running npm test to check the new tests you've created.

In this exercise, you'll need to play computer with the function find. This function makes use of a while loop statement. Your task will be to step through the code to figure out what is happening when the computer executes the code.

In the implement directory you've got a number of functions you'll need to implement. For each function, you also have a number of different cases you'll need to check for your function.

Use the acceptance criteria as an aid in writing tests to check your functionality.

Recommended order:

1. get-ordinal-number.test.js
2. count.test.js
3. repeat.test.js
4. is-prime.test.js

Try implementing the functions specified in password-validator.js and card-validator.md