Added test workflow #3

	name: Go

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

	jobs:

	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go-version: [ '1.18', '1.19', '1.20', '1.21.x' ]
	services:
	postgres:
	image: postgres:12
	env:
	POSTGRES_USER: devel
	POSTGRES_PASSWORD: devel
	POSTGRES_DB: grade
	ports:
	- 5432:5432 # exposing 5432 port for application to use
	# needed because the postgres container does not provide a healthcheck
	options: >-
	--health-cmd pg_isready --health-interval 10s
	--health-timeout 5s --health-retries 5

	steps:
	- uses: actions/checkout@v3
	- name: Set up Go ${{ matrix.go-version }}
	uses: actions/setup-go@v4
	with:
	go-version: ${{ matrix.go-version }}

	- name: Test
	run: go test -v ./...
	env:
	DATABASE_URL: postgres://devel:devel@postgres:5432/grade

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