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// Copyright 2018 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.
package procfs
import (
"math"
"os"
"testing"
)
func TestProcStat(t *testing.T) {
p, err := getProcFixtures(t).Proc(26231)
if err != nil {
t.Fatal(err)
}
s, err := p.Stat()
if err != nil {
t.Fatal(err)
}
// pid stat int fields
for _, test := range []struct {
name string
want int
have int
}{
{name: "pid", want: 26231, have: s.PID},
{name: "user time", want: 1677, have: int(s.UTime)},
{name: "system time", want: 44, have: int(s.STime)},
{name: "start time", want: 82375, have: int(s.Starttime)},
{name: "virtual memory size", want: 56274944, have: int(s.VSize)},
{name: "resident set size", want: 1981, have: s.RSS},
} {
if test.want != test.have {
t.Errorf("want %s %d, have %d", test.name, test.want, test.have)
}
}
// pid stat uint64 fields
for _, test := range []struct {
name string
want uint64
have uint64
}{
{name: "RSS Limit", want: 18446744073709551615, have: s.RSSLimit},
{name: "delayacct_blkio_ticks", want: 31, have: s.DelayAcctBlkIOTicks},
} {
if test.want != test.have {
t.Errorf("want %s %d, have %d", test.name, test.want, test.have)
}
}
// pid stat uint fields
for _, test := range []struct {
name string
want uint
have uint
}{
{name: "processor", want: 0, have: s.Processor},
{name: "rt_priority", want: 0, have: s.RTPriority},
{name: "policy", want: 0, have: s.Policy},
} {
if test.want != test.have {
t.Errorf("want %s %d, have %d", test.name, test.want, test.have)
}
}
}
func TestProcStatLimits(t *testing.T) {
p, err := getProcFixtures(t).Proc(26232)
if err != nil {
t.Fatal(err)
}
s, err := p.Stat()
if err != nil {
t.Errorf("want not error, have %s", err)
}
// max values of stat int fields
for _, test := range []struct {
name string
want int
have int
}{
{name: "waited for children user time", want: math.MinInt64, have: s.CUTime},
{name: "waited for children system time", want: math.MaxInt64, have: s.CSTime},
} {
if test.want != test.have {
t.Errorf("want %s %d, have %d", test.name, test.want, test.have)
}
}
}
func TestProcStatComm(t *testing.T) {
s1, err := testProcStat(26231)
if err != nil {
t.Fatal(err)
}
if want, have := "vim", s1.Comm; want != have {
t.Errorf("want comm %s, have %s", want, have)
}
s2, err := testProcStat(584)
if err != nil {
t.Fatal(err)
}
if want, have := "(a b ) ( c d) ", s2.Comm; want != have {
t.Errorf("want comm %s, have %s", want, have)
}
}
func TestProcStatVirtualMemory(t *testing.T) {
s, err := testProcStat(26231)
if err != nil {
t.Fatal(err)
}
if want, have := 56274944, int(s.VirtualMemory()); want != have {
t.Errorf("want virtual memory %d, have %d", want, have)
}
}
func TestProcStatResidentMemory(t *testing.T) {
s, err := testProcStat(26231)
if err != nil {
t.Fatal(err)
}
if want, have := 1981*os.Getpagesize(), s.ResidentMemory(); want != have {
t.Errorf("want resident memory %d, have %d", want, have)
}
}
func TestProcStatStartTime(t *testing.T) {
s, err := testProcStat(26231)
if err != nil {
t.Fatal(err)
}
time, err := s.StartTime()
if err != nil {
t.Fatal(err)
}
if want, have := 1418184099.75, time; want != have {
t.Errorf("want start time %f, have %f", want, have)
}
}
func TestProcStatCPUTime(t *testing.T) {
s, err := testProcStat(26231)
if err != nil {
t.Fatal(err)
}
if want, have := 17.21, s.CPUTime(); want != have {
t.Errorf("want cpu time %f, have %f", want, have)
}
}
func testProcStat(pid int) (ProcStat, error) {
fs, err := NewFS(procTestFixtures)
if err != nil {
return ProcStat{}, err
}
p, err := fs.Proc(pid)
if err != nil {
return ProcStat{}, err
}
return p.Stat()
}