Bump actions/cache from 3 to 4 #104

	#
	# Copyright © 2021-present Peter M. Stahl [email protected]
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either expressed or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	name: build

	on:
	push:
	branches:
	- main
	paths:
	- '**.go'
	- '**.mod'
	- '**.yml'
	pull_request:
	branches:
	- main
	paths:
	- '**.go'
	- '**.mod'
	- '**.yml'

	jobs:
	build-and-test:
	name: Build and test

	runs-on: ubuntu-latest

	steps:
	- name: Check out repository
	uses: actions/checkout@v4

	- name: Set Up Go
	uses: actions/setup-go@v5
	with:
	go-version: '1.18'

	- name: Store or retrieve Go modules cache
	uses: actions/cache@v4
	with:
	path: ~/go/pkg/mod
	key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
	restore-keys: ${{ runner.os }}-go-

	- name: Build library and dependencies
	run: go build

	- name: Run unit tests
	run: go test -coverprofile=coverage.txt -covermode=atomic

	- name: Upload code coverage report to Codecov
	uses: codecov/codecov-action@v3
	with:
	files: ./coverage.txt

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