node/placement: use predefined error for empty netmap #6912

	name: neofs-node tests

	on:
	push:
	branches:
	- master
	- support/**
	paths-ignore:
	- '*.md'
	pull_request:
	branches:
	- master
	- support/**
	paths-ignore:
	- '*.md'

	jobs:
	cover:
	name: Coverage
	runs-on: ubuntu-latest
	steps:
	- name: Setup go
	uses: actions/setup-go@v5
	with:
	cache: true
	go-version: '1.22'

	- name: Check out code
	uses: actions/checkout@v4

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

	- name: Codecov
	uses: codecov/codecov-action@v4
	with:
	fail_ci_if_error: true # if something is wrong on uploading codecov results, then this job will fail
	files: ./coverage.txt
	slug: nspcc-dev/neofs-node
	token: ${{ secrets.CODECOV_TOKEN }}
	verbose: true

	test:
	runs-on: ubuntu-latest
	name: Unit tests
	strategy:
	matrix:
	os: [ubuntu-22.04, macos-14]
	go: [ '1.20.x', '1.21.x', '1.22' ]
	exclude:
	# Only the latest Go version MacOS.
	- os: macos-14
	go: '1.20.x'
	- os: macos-14
	go: '1.21.x'
	# Exclude the latest Go version for Ubuntu as Coverage uses it.
	- os: ubuntu-22.04
	go: '1.22'

	steps:
	- name: Setup go
	uses: actions/setup-go@v5
	with:
	cache: true
	go-version: ${{ matrix.go }}

	- name: Check out code
	uses: actions/checkout@v4

	- name: Run go test
	run: go test -race ./...

	lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-go@v5
	with:
	go-version-file: 'go.mod'
	- name: golangci-lint
	uses: golangci/golangci-lint-action@v4
	with:
	version: latest
	args: --timeout=5m

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