add usage case #122

	# This workflow will build a golang project
	# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go

	name: Go

	on:
	push:
	branches: [ "master" ]
	pull_request:
	branches: [ "master" ]

	jobs:

	build:
	name: Build and Use on ${{ matrix.target }}
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	target: ["1.18", "1.19", "1.20", "1.21"]
	steps:
	- uses: actions/checkout@v3

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

	- name: TestFunctions
	run: \|
	go test -v -cover ./cmd/decorator/
	go test -v -cover ./decor/

	- name: Build
	run: \|
	go install -a -work ./cmd/decorator/
	decorator
	decorator --help
	cd ./example/usages/ && go build -toolexec decorator && ./usages && go clean && go clean -x
	cd ../..

	- name: TestExample
	run: \|
	cd ./example/usages/ && go test -v -toolexec decorator

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