prometheusmetricsnode-metricsprocfsprometheus-exportersystem-informationhost-metricssystem-metricsmachine-metrics
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88 lines
2.3 KiB
88 lines
2.3 KiB
// Copyright 2024 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build !nopcidevice
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package collector
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import (
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"fmt"
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"io"
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"log/slog"
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"os"
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"strings"
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"testing"
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"github.com/alecthomas/kingpin/v2"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/testutil"
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)
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func TestPCICollectorWithNameResolution(t *testing.T) {
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// Test the PCI collector with name resolution enabled and compare against expected output
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if _, err := kingpin.CommandLine.Parse([]string{
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"--path.sysfs", "fixtures/sys",
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"--path.procfs", "fixtures/proc",
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"--path.rootfs", "fixtures",
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"--collector.pcidevice",
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"--collector.pcidevice.names",
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// "--collector.pcidevice.idsfile", "/usr/share/misc/pci.ids",
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"--collector.pcidevice.idsfile", "fixtures/pci.ids",
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}); err != nil {
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t.Fatal(err)
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}
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logger := slog.New(slog.NewTextHandler(io.Discard, nil))
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c, err := NewPcideviceCollector(logger)
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if err != nil {
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t.Fatal(err)
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}
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reg := prometheus.NewRegistry()
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reg.MustRegister(&testPCICollector{pc: c})
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// Read expected output from fixture file
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expectedOutput, err := os.ReadFile("fixtures/pcidevice-names-output.txt")
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if err != nil {
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t.Fatal(err)
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}
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err = testutil.GatherAndCompare(reg, strings.NewReader(string(expectedOutput)))
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if err != nil {
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t.Fatal(err)
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}
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}
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// testPCICollector wraps the PCI collector for testing
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type testPCICollector struct {
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pc Collector
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}
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func (tc *testPCICollector) Collect(ch chan<- prometheus.Metric) {
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sink := make(chan prometheus.Metric)
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go func() {
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err := tc.pc.Update(sink)
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if err != nil {
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panic(fmt.Errorf("failed to update collector: %s", err))
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}
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close(sink)
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}()
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for m := range sink {
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ch <- m
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}
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}
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func (tc *testPCICollector) Describe(ch chan<- *prometheus.Desc) {
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// No-op for testing
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}
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