In this test you will find a wide cross section of the type of code you will be exposed to at Wealth Wizards.

For an experienced engineer this code test should take ~1 hour to complete. For more junior candidates we would suggest you attempt as much of the test as you can in a 2 hour time limit and submit your progress, however if you should wish to continue beyond that we welcome you to do so.

Click the Use this template button above to create a private repository in your own github account and invite github users @mrwithersea and @rob1256 as collaborators on your repo.

Please commit your work on a new branch and raise a pull request against the master branch of your repo and add us as reviewers. Please add a simple description to your PR outlining which parts of the test have been completed and any comments you feel necessary.

Start the app by running the following commands:

yarn

yarn dev

The placeholder application can be browsed to on:

http://localhost:8080

There is a single API route accessible through the following request:

curl -X POST http://localhost:8080/v1/national-insurance -H 'Content-Type: application/json' -d '{"income": 1234}'

Run this command to see the result of the unit tests, you will need to implement the empty function at line:27 of src/services/national-insurance.js in order to make the failing unit tests pass.

yarn test:unit

Run this command to see the result of the feature tests, you will need to implement the missing feature of the API that is indicated by the failing tests.

yarn test:feature

Run this command to run the application locally.

yarn dev

Alternatively you can run this command to bring the application up in the provided docker container:

make dev

There are a number of packages pre-installed with this codebase, feel free to use any you see fit or add any of your own choosing.

Good luck

This code test was written on macOS but will run natively on Windows 10.

When running on Windows 10 our preference was to follow this guide to using Windows Subsystem for Linux and installing Bash through the Ubuntu distro in the Windows Store.

Users of Ubuntu should be aware that in some versions of the distro there are extra hurdles around the aliasing of the yarn command by the cmdtest library and the use of nodejs rather than node, this page provides details on rectifying these problems.

This code test requires Node.js 10.x (which is in LTS) and we advocate using a node version management tool such as n to help in managing your node versions.