windows_exporter/internal/collector/net/net_bench_test.go

// SPDX-License-Identifier: Apache-2.0
//
// Copyright The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//go:build windows

package net_test

import (
	"log/slog"
	"sync"
	"testing"

	"github.com/prometheus-community/windows_exporter/internal/collector/net"
	"github.com/prometheus/client_golang/prometheus"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// BenchmarkCollector builds the collector from its config instead of
// testutils.FuncBenchmarkCollector, which doesn't parse the flags and so
// leaves every sub collector disabled.
func BenchmarkCollector(b *testing.B) {
	c := net.New(nil)
	require.NoError(b, c.Build(slog.New(slog.DiscardHandler), nil))

	metrics := make(chan prometheus.Metric)

	var wg sync.WaitGroup
	wg.Go(func() {
		for range metrics {
		}
	})
	b.Cleanup(func() {
		close(metrics)
		wg.Wait()
		assert.NoError(b, c.Close())
	})

	for b.Loop() {
		require.NoError(b, c.Collect(metrics, 0))
	}
}