TDD with Jest

Let's get good at TDD! Work through the katas in this repo and practice your TDD chops.

For this assignemnt, we will be using Jest, which is a popular javascript testing framework created and used by Facebook.

Instructions

• Fork and clone the repo

• cd into the repo

• Run npm install

  • this will install the dependencies listed in package.json (for this assignment, it's only jest)

• The description for each kata is described in the respective files in src/. The corresponding tests are in test/filename.test.js.

• To run the tests, run npm test in your terminal.

  • Inside package.json, we have defined npm test to execute the jest command, which will run all the tests in the project.

  • We have also defined 2 additional commands:

    • npm run test:watch, which is executing the jest --watch command. The --watch option will rerun the tests everytime you save a file.

    • npm run test:coverage, which is executing the jest --coverage command. The --coverage option produces a test coverage report after running the tests

• To quit the test runner, hit q in the terminal where jest is running.

• Do the assignments in this order:

  • fizzbuzz.js
  • sumWithoutHighestAndLowest.js
  • firstNonConsecutiveNumber.js
  • findMultiples.js

• Once you've passed the first test, change the next test from test.skip(...) to test(...).

• Have fun! And enjoy the dopamines that come with seeing green!

Part 2: Testing state

• Add tests for the methods in account.js

• Update the deposit() method so that it does nothing when the account balance before depositing is 5000 or more

• Update the withdraw() method so that it does nothing when the account balance before withdrawing is 0 or less