do not allocate gauge if cardinality metrics are turned off #135

	name: Test

	on:
	push:
	branches: ['*']
	tags: ['v*']
	pull_request:
	branches: ['*']

	jobs:

	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go: ["1.17.x", "1.18.x"]
	include:
	- go: 1.18.x
	latest: true

	steps:
	- name: Setup Go
	uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go }}

	- name: Checkout code
	uses: actions/checkout@v2

	- name: Load cached dependencies
	uses: actions/cache@v1
	with:
	path: ~/go/pkg/mod
	key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
	restore-keys: \|
	${{ runner.os }}-go-

	- name: Download Dependencies
	run: \|
	go mod download
	(cd tools && go mod download)

	- name: Lint
	if: matrix.latest
	run: make lint

	- name: Test
	run: make cover

	- name: Upload coverage to codecov.io
	uses: codecov/codecov-action@v1

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