# Resistor Color

If you want to build something using a Raspberry Pi, you'll probably use _resistors_.
For this exercise, you need to know two things about them:

* Each resistor has a resistance value.
* Resistors are small - so small in fact that if you printed the resistance value on them, it would be hard to read.

To get around this problem, manufacturers print color-coded bands onto the resistors to denote their resistance values.
Each band has a position and a numeric value.

The first 2 bands of a resistor have a simple encoding scheme: each color maps to a single number.

In this exercise you are going to create a helpful program so that you don't have to remember the values of the bands.

These colors are encoded as follows:

- Black: 0
- Brown: 1
- Red: 2
- Orange: 3
- Yellow: 4
- Green: 5
- Blue: 6
- Violet: 7
- Grey: 8
- White: 9

The goal of this exercise is to create a way:
- to look up the numerical value associated with a particular color band
- to list the different band colors

Mnemonics map the colors to the numbers, that, when stored as an array, happen to map to their index in the array: Better Be Right Or Your Great Big Values Go Wrong.

More information on the color encoding of resistors can be found in the [Electronic color code Wikipedia article](https://en.wikipedia.org/wiki/Electronic_color_code)

Although the color names are capitalised in the description, the function colorCode will always be called with the lowercase equivalent, e.g brown instead of Brown


## Setup

Go through the setup instructions for Javascript to install the necessary
dependencies:

[https://exercism.io/tracks/javascript/installation](https://exercism.io/tracks/javascript/installation)

## Requirements

Please `cd` into exercise directory before running all below commands.

Install assignment dependencies:

```bash
$ npm install
```

## Making the test suite pass

Execute the tests with:

```bash
$ npm test
```

In the test suites all tests but the first have been skipped.

Once you get a test passing, you can enable the next one by changing `xtest` to
`test`.


## Submitting Solutions

Once you have a solution ready, you can submit it using:

```bash
exercism submit resistor-color.js
```

## Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have
completed the exercise.

## Exercise Source Credits

Maud de Vries, Erik Schierboom [https://github.com/exercism/problem-specifications/issues/1458](https://github.com/exercism/problem-specifications/issues/1458)