add unit test #7

	name: CI

	on:
	pull_request:
	push:
	branches:
	- main

	jobs:
	build:
	strategy:
	matrix:
	go:
	- '1.21'
	- '1.22'
	- '1.23'

	runs-on: ubuntu-latest
	steps:
	- name: Check out code into the Go module directory
	uses: actions/checkout@v3

	- name: Set up Go ${{ matrix.go }}
	uses: actions/setup-go@v4
	with:
	go-version: ${{ matrix.go }}

	- name: Go test
	run: make test

	- name: Go build
	run: make build

Provide feedback