[ADDED] MQTT: test/bench using external client #2

	name: MQTT-ext
	on: [push, pull_request]

	jobs:
	test:
	env:
	GOPATH: /home/runner/work/nats-server
	GO111MODULE: "on"
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	path: src/github.com/nats-io/nats-server

	- name: Setup Go
	uses: actions/setup-go@v4
	with:
	go-version: 1.21

	- name: Install external test tools
	shell: bash --noprofile --norc -x -eo pipefail {0}
	run: \|
	wget https://github.com/hivemq/mqtt-cli/releases/download/v4.20.0/mqtt-cli-4.20.0.deb
	sudo apt install ./mqtt-cli-4.20.0.deb

	- name: Run 'mqtt test'
	shell: bash --noprofile --norc -x -eo pipefail {0}
	run: \|
	cd src/github.com/nats-io/nats-server
	go test -v -vet=off --run=TestMQTTEx ./server

	bench:
	strategy:
	matrix:
	mode: [Cluster, Server]
	env:
	GOPATH: /home/runner/work/nats-server
	GO111MODULE: "on"

	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	path: src/github.com/nats-io/nats-server

	- name: Setup Go
	uses: actions/setup-go@v4
	with:
	go-version: 1.21

	- name: Install external test tools
	shell: bash --noprofile --norc -x -eo pipefail {0}
	run: \|
	# <>/<> FIXME: use @latest
	go install github.com/ConnectEverything/mqtt-test@36762e7b1c50335f56d9560dda218115e7b475c6

	- name: Run benchmarks
	shell: bash --noprofile --norc -x -eo pipefail {0}
	run: \|
	cd src/github.com/nats-io/nats-server
	pwd
	go test --run=- --bench 'MQTTEx/${{ matrix.mode }}' --benchtime=100x ./server \| tee /tmp/current-bench-result.txt

Provide feedback