Update codecov/codecov-action action to v4 (#245) #340

	name: ci
	on:
	pull_request:
	branches:
	- master
	push:
	branches:
	- master

	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	go:
	- '1.14'
	- '1.15'
	- '1.16'
	- '1.17'
	- '1.18'
	- '1.19'
	- '1.20'
	env:
	- PAHO_VERSION=v1.2.0
	- PAHO_VERSION=v1.3.2
	env:
	GO111MODULE: on
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Setup Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go }}
	- name: Check paho wrapper go.mod
	run: \|
	(! grep require paho/go.mod)
	(! grep replace paho/go.mod) # don't add require/replace to paho/go.mod
	- name: Prepare integration test
	run: docker-compose up -d
	- name: Run go test
	run: \|
	eval ${{ matrix.env }}

	go vet -tags integration ./...
	go build ./...

	go test $(go list ./... \| grep -v examples) \
	-v \
	-tags integration \
	-race -coverprofile=cover.out -covermode=atomic

	(
	cd paho
	go get github.com/at-wat/mqtt-go
	echo 'replace github.com/at-wat/mqtt-go => ../' >> go.mod
	go get github.com/eclipse/paho.mqtt.golang@${PAHO_VERSION}
	go get github.com/eclipse/paho.mqtt.golang@${PAHO_VERSION}
	go vet ./...
	go test ./... \
	-v \
	-tags integration \
	-race -coverprofile=cover.out -covermode=atomic
	)

	go mod tidy
	git diff --exit-code go.mod go.sum # mod/sum must be up-to-date and tidied
	- uses: codecov/codecov-action@v4
	with:
	files: ./cover.out,./paho/cover.out
	token: ${{ secrets.CODECOV_TOKEN }}

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