Move global state to explicit state 'workspace' controlled by the caller. #19

	name: CI

	on:
	push:
	branches:
	- master
	- main
	pull_request:
	branches:
	- master
	- main

	jobs:
	on-pull-request:
	name: test
	strategy:
	matrix:
	go-version:
	- 1.18.x
	- 1.19.x
	os: [ ubuntu-latest ]
	runs-on: ${{ matrix.os }}
	steps:
	- name: Checkout
	uses: actions/checkout@master

	- name: Set up Go
	uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go-version }}

	- run: go env

	- name: Cache deps
	uses: actions/cache@v2
	with:
	path: ~/go/pkg/mod
	key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
	restore-keys: \|
	${{ runner.os }}-go-

	- name: Install deps
	run: go mod download

	- name: Test
	run: go test ./...

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