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moby--moby/pkg/parsers/operatingsystem/operatingsystem_test.go

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package operatingsystem
import (
"io/ioutil"
"os"
"path/filepath"
"testing"
)
func TestGetOperatingSystem(t *testing.T) {
var (
backup = etcOsRelease
ubuntuTrusty = []byte(`NAME="Ubuntu"
VERSION="14.04, Trusty Tahr"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 14.04 LTS"
VERSION_ID="14.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"`)
gentoo = []byte(`NAME=Gentoo
ID=gentoo
PRETTY_NAME="Gentoo/Linux"
ANSI_COLOR="1;32"
HOME_URL="http://www.gentoo.org/"
SUPPORT_URL="http://www.gentoo.org/main/en/support.xml"
BUG_REPORT_URL="https://bugs.gentoo.org/"
`)
noPrettyName = []byte(`NAME="Ubuntu"
VERSION="14.04, Trusty Tahr"
ID=ubuntu
ID_LIKE=debian
VERSION_ID="14.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"`)
)
dir := os.TempDir()
etcOsRelease = filepath.Join(dir, "etcOsRelease")
defer func() {
os.Remove(etcOsRelease)
etcOsRelease = backup
}()
for expect, osRelease := range map[string][]byte{
"Ubuntu 14.04 LTS": ubuntuTrusty,
"Gentoo/Linux": gentoo,
"": noPrettyName,
} {
if err := ioutil.WriteFile(etcOsRelease, osRelease, 0600); err != nil {
t.Fatalf("failed to write to %s: %v", etcOsRelease, err)
}
s, err := GetOperatingSystem()
if s != expect {
if expect == "" {
t.Fatalf("Expected error 'PRETTY_NAME not found', but got %v", err)
} else {
t.Fatalf("Expected '%s', but got '%s'. Err=%v", expect, s, err)
}
}
}
}
func TestIsContainerized(t *testing.T) {
var (
backup = proc1Cgroup
nonContainerizedProc1Cgroup = []byte(`14:name=systemd:/
13:hugetlb:/
12:net_prio:/
11:perf_event:/
10:bfqio:/
9:blkio:/
8:net_cls:/
7:freezer:/
6:devices:/
5:memory:/
4:cpuacct:/
3:cpu:/
2:cpuset:/
`)
containerizedProc1Cgroup = []byte(`9:perf_event:/docker/3cef1b53c50b0fa357d994f8a1a8cd783c76bbf4f5dd08b226e38a8bd331338d
8:blkio:/docker/3cef1b53c50b0fa357d994f8a1a8cd783c76bbf4f5dd08b226e38a8bd331338d
7:net_cls:/
6:freezer:/docker/3cef1b53c50b0fa357d994f8a1a8cd783c76bbf4f5dd08b226e38a8bd331338d
5:devices:/docker/3cef1b53c50b0fa357d994f8a1a8cd783c76bbf4f5dd08b226e38a8bd331338d
4:memory:/docker/3cef1b53c50b0fa357d994f8a1a8cd783c76bbf4f5dd08b226e38a8bd331338d
3:cpuacct:/docker/3cef1b53c50b0fa357d994f8a1a8cd783c76bbf4f5dd08b226e38a8bd331338d
2:cpu:/docker/3cef1b53c50b0fa357d994f8a1a8cd783c76bbf4f5dd08b226e38a8bd331338d
1:cpuset:/`)
)
dir := os.TempDir()
proc1Cgroup = filepath.Join(dir, "proc1Cgroup")
defer func() {
os.Remove(proc1Cgroup)
proc1Cgroup = backup
}()
if err := ioutil.WriteFile(proc1Cgroup, nonContainerizedProc1Cgroup, 0600); err != nil {
t.Fatalf("failed to write to %s: %v", proc1Cgroup, err)
}
inContainer, err := IsContainerized()
if err != nil {
t.Fatal(err)
}
if inContainer {
t.Fatal("Wrongly assuming containerized")
}
if err := ioutil.WriteFile(proc1Cgroup, containerizedProc1Cgroup, 0600); err != nil {
t.Fatalf("failed to write to %s: %v", proc1Cgroup, err)
}
inContainer, err = IsContainerized()
if err != nil {
t.Fatal(err)
}
if !inContainer {
t.Fatal("Wrongly assuming non-containerized")
}
}