node_exporter/collector/sockstat_linux_test.go

42 lines
1.1 KiB
Go

package collector
import (
"os"
"strconv"
"testing"
)
func TestSockStats(t *testing.T) {
file, err := os.Open("fixtures/sockstat")
if err != nil {
t.Fatal(err)
}
defer file.Close()
sockStats, err := parseSockStats(file, fileName)
if err != nil {
t.Fatal(err)
}
if want, got := "229", sockStats["sockets"]["used"]; want != got {
t.Errorf("want sockstat sockets used %s, got %s", want, got)
}
if want, got := "4", sockStats["TCP"]["tw"]; want != got {
t.Errorf("want sockstat TCP tw %s, got %s", want, got)
}
if want, got := "17", sockStats["TCP"]["alloc"]; want != got {
t.Errorf("want sockstat TCP alloc %s, got %s", want, got)
}
// The test file has 1 for TCP mem, which is one page. So we should get the
// page size in bytes back from sockstat_linux. We get the page size from
// os here because this value can change from system to system. The value is
// 4096 by default from linux 2.4 onward.
if want, got := strconv.Itoa(os.Getpagesize()), sockStats["TCP"]["mem_bytes"]; want != got {
t.Errorf("want sockstat TCP mem_bytes %s, got %s", want, got)
}
}