120 lines
3.9 KiB
Go
120 lines
3.9 KiB
Go
// Copyright 2019 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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package prometheus
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import (
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"bytes"
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"os"
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"regexp"
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"testing"
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"github.com/prometheus/common/expfmt"
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)
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func TestWindowsProcessCollector(t *testing.T) {
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registry := NewRegistry()
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if err := registry.Register(NewProcessCollector(ProcessCollectorOpts{})); err != nil {
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t.Fatal(err)
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}
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if err := registry.Register(NewProcessCollector(ProcessCollectorOpts{
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PidFn: func() (int, error) { return os.Getpid(), nil },
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Namespace: "foobar",
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ReportErrors: true, // No errors expected, just to see if none are reported.
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})); err != nil {
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t.Fatal(err)
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}
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mfs, err := registry.Gather()
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if err != nil {
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t.Fatal(err)
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}
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var buf bytes.Buffer
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for _, mf := range mfs {
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if _, err := expfmt.MetricFamilyToText(&buf, mf); err != nil {
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t.Fatal(err)
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}
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}
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for _, re := range []*regexp.Regexp{
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regexp.MustCompile("\nprocess_cpu_seconds_total [0-9]"),
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regexp.MustCompile("\nprocess_max_fds [1-9]"),
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regexp.MustCompile("\nprocess_open_fds [1-9]"),
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regexp.MustCompile("\nprocess_virtual_memory_max_bytes (-1|[1-9])"),
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regexp.MustCompile("\nprocess_virtual_memory_bytes [1-9]"),
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regexp.MustCompile("\nprocess_resident_memory_bytes [1-9]"),
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regexp.MustCompile("\nprocess_start_time_seconds [0-9.]{10,}"),
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regexp.MustCompile("\nfoobar_process_cpu_seconds_total [0-9]"),
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regexp.MustCompile("\nfoobar_process_max_fds [1-9]"),
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regexp.MustCompile("\nfoobar_process_open_fds [1-9]"),
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regexp.MustCompile("\nfoobar_process_virtual_memory_max_bytes (-1|[1-9])"),
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regexp.MustCompile("\nfoobar_process_virtual_memory_bytes [1-9]"),
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regexp.MustCompile("\nfoobar_process_resident_memory_bytes [1-9]"),
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regexp.MustCompile("\nfoobar_process_start_time_seconds [0-9.]{10,}"),
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} {
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if !re.Match(buf.Bytes()) {
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t.Errorf("want body to match %s\n%s", re, buf.String())
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}
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}
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}
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func TestWindowsDescribeAndCollectAlignment(t *testing.T) {
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collector := &processCollector{
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pidFn: getPIDFn(),
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cpuTotal: NewDesc("cpu_total", "Total CPU usage", nil, nil),
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openFDs: NewDesc("open_fds", "Number of open file descriptors", nil, nil),
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maxFDs: NewDesc("max_fds", "Maximum file descriptors", nil, nil),
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vsize: NewDesc("vsize", "Virtual memory size", nil, nil),
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maxVsize: NewDesc("max_vsize", "Maximum virtual memory size", nil, nil),
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rss: NewDesc("rss", "Resident Set Size", nil, nil),
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startTime: NewDesc("start_time", "Process start time", nil, nil),
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inBytes: NewDesc("in_bytes", "Input bytes", nil, nil),
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outBytes: NewDesc("out_bytes", "Output bytes", nil, nil),
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}
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// Collect and get descriptors
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descCh := make(chan *Desc, 15)
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collector.describe(descCh)
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close(descCh)
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definedDescs := make(map[string]bool)
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for desc := range descCh {
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definedDescs[desc.String()] = true
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}
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// Collect and get metrics
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metricsCh := make(chan Metric, 15)
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collector.processCollect(metricsCh)
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close(metricsCh)
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collectedMetrics := make(map[string]bool)
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for metric := range metricsCh {
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collectedMetrics[metric.Desc().String()] = true
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}
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// Verify that all described metrics are collected
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for desc := range definedDescs {
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if !collectedMetrics[desc] {
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t.Errorf("Metric %s described but not collected", desc)
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}
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}
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// Verify that no extra metrics are collected
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for desc := range collectedMetrics {
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if !definedDescs[desc] {
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t.Errorf("Metric %s collected but not described", desc)
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}
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}
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}
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