Mercator unit testing afternoon task!

This repo contains the unit testing task.

Your task is to implement TDD to create an income tax calculator!

Steps to follow:

1. Write failing tests around the placeholder methods created
2. Run the tests, making sure they fail
3. Write just enough code to make the tests pass
4. Refactor the code to make it cleaner and more readable

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To run the tests, you can use the green play button in your Spec, or in terminal, run:

sbt test

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Extension task (1 - Hard):

1. Extend the task to calculate capital gains from shares
2. Information on implementation can be found: https://taxscouts.com/the-tax-basics/capital-gains-tax-rates/

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Extension task (2 - Really Hard):

1. Extend the task to calculate total income tax AND capital gains tax from shares
2. You can create a new method that calls your existing methods to accomplish this