[FIXED] Prevent a server from panicking when shutdown immediately after starting. #102

	name: MQTT external test
	on: [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@v5
	with:
	go-version-file: src/github.com/nats-io/nats-server/go.mod
	cache-dependency-path: src/github.com/nats-io/nats-server/go.sum

	- name: Set up testing tools and environment
	shell: bash --noprofile --norc -eo pipefail {0}
	id: setup
	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
	go install github.com/ConnectEverything/[email protected]

	- name: Run tests (3 times to detect flappers)
	shell: bash --noprofile --norc -eo pipefail {0}
	run: \|
	cd src/github.com/nats-io/nats-server
	go test -v --count=3 --run='TestXMQTT' ./server

	- name: Run tests with --race
	shell: bash --noprofile --norc -eo pipefail {0}
	run: \|
	cd src/github.com/nats-io/nats-server
	go test -v --race --failfast --run='TestXMQTT' ./server

	- name: Run benchmarks
	shell: bash --noprofile --norc -eo pipefail {0}
	run: \|
	cd src/github.com/nats-io/nats-server
	go test --run='-' --count=3 --bench 'BenchmarkXMQTT' --benchtime=100x ./server

	# TODO: compare benchmarks

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