Add tests for 1-to-2 chars mapping #48

	name: tests

	on: [push, pull_request]

	jobs:
	build:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	node-version: [18]

	steps:
	- uses: actions/checkout@v4

	- name: Use Node.js ${{ matrix.node-version }}
	uses: actions/setup-node@v4
	with:
	node-version: ${{ matrix.node-version }}

	- name: Display Node.js and npm informations
	run: \|
	echo "node version $(node -v) running"
	echo "npm version $(npm -v) running"

	- name: Install dependencies
	run: yarn

	- name: "Unit tests"
	run: "yarn test"

	- name: "Build"
	run: "yarn build"

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