client_golang/prometheus/process_collector_test.go

55 lines
1.5 KiB
Go

package prometheus
import (
"io/ioutil"
"net/http"
"net/http/httptest"
"os"
"regexp"
"testing"
"github.com/prometheus/procfs"
)
func TestProcessCollector(t *testing.T) {
if _, err := procfs.Self(); err != nil {
t.Skipf("skipping TestProcessCollector, procfs not available: %s", err)
}
registry := newRegistry()
registry.Register(NewProcessCollector(os.Getpid(), ""))
registry.Register(NewProcessCollectorPIDFn(
func() (int, error) { return os.Getpid(), nil }, "foobar"))
s := httptest.NewServer(InstrumentHandler("prometheus", registry))
defer s.Close()
r, err := http.Get(s.URL)
if err != nil {
t.Fatal(err)
}
defer r.Body.Close()
body, err := ioutil.ReadAll(r.Body)
if err != nil {
t.Fatal(err)
}
for _, re := range []*regexp.Regexp{
regexp.MustCompile("process_cpu_seconds_total [0-9]"),
regexp.MustCompile("process_max_fds [0-9]{2,}"),
regexp.MustCompile("process_open_fds [1-9]"),
regexp.MustCompile("process_virtual_memory_bytes [1-9]"),
regexp.MustCompile("process_resident_memory_bytes [1-9]"),
regexp.MustCompile("process_start_time_seconds [0-9.]{10,}"),
regexp.MustCompile("foobar_process_cpu_seconds_total [0-9]"),
regexp.MustCompile("foobar_process_max_fds [0-9]{2,}"),
regexp.MustCompile("foobar_process_open_fds [1-9]"),
regexp.MustCompile("foobar_process_virtual_memory_bytes [1-9]"),
regexp.MustCompile("foobar_process_resident_memory_bytes [1-9]"),
regexp.MustCompile("foobar_process_start_time_seconds [0-9.]{10,}"),
} {
if !re.Match(body) {
t.Errorf("want body to match %s\n%s", re, body)
}
}
}