# Step 2.4: Testing TypeScript code with Jest (Exercise)

[Lessons](../) | [Exercise](./exercise/) | [Demo](./demo/)

# Exercise

Start the test runner by running `npm test` in the root of the `frontend-bootcamp` folder.

## Basic testing

1. Look at `exercise/src/stack.ts` for a sample implementation of a stack

2. Follow the instructions inside `stack.spec.ts` file to complete the two tests

## Enzyme Testing

1. Open up `exercise/src/TestMe.spec.tsx`

2. Fill in the test using Enzyme concepts introduced in the demo