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systemd_test.go
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systemd_test.go
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package systemd
import (
"os"
"testing"
"github.com/opencontainers/runc/libcontainer/cgroups"
"github.com/opencontainers/runc/libcontainer/configs"
)
func newManager(t *testing.T, config *configs.Cgroup) (m cgroups.Manager) {
t.Helper()
var err error
if cgroups.IsCgroup2UnifiedMode() {
m, err = NewUnifiedManager(config, "")
} else {
m, err = NewLegacyManager(config, nil)
}
if err != nil {
t.Fatal(err)
}
t.Cleanup(func() { _ = m.Destroy() })
return m
}
func TestSystemdVersion(t *testing.T) {
systemdVersionTests := []struct {
verStr string
expectedVer int
expectErr bool
}{
{`"219"`, 219, false},
{`"v245.4-1.fc32"`, 245, false},
{`"241-1"`, 241, false},
{`"v241-1"`, 241, false},
{`333.45"`, 333, false},
{`v321-0`, 321, false},
{"NaN", -1, true},
{"", -1, true},
{"v", -1, true},
}
for _, sdTest := range systemdVersionTests {
ver, err := systemdVersionAtoi(sdTest.verStr)
if !sdTest.expectErr && err != nil {
t.Errorf("systemdVersionAtoi(%s); want nil; got %v", sdTest.verStr, err)
}
if sdTest.expectErr && err == nil {
t.Errorf("systemdVersionAtoi(%s); wanted failure; got nil", sdTest.verStr)
}
if ver != sdTest.expectedVer {
t.Errorf("systemdVersionAtoi(%s); want %d; got %d", sdTest.verStr, sdTest.expectedVer, ver)
}
}
}
func TestValidUnitTypes(t *testing.T) {
testCases := []struct {
unitName string
expectedUnitType string
}{
{"system.slice", "Slice"},
{"kubepods.slice", "Slice"},
{"testing-container:ab.scope", "Scope"},
}
for _, sdTest := range testCases {
unitType := getUnitType(sdTest.unitName)
if unitType != sdTest.expectedUnitType {
t.Errorf("getUnitType(%s); want %q; got %q", sdTest.unitName, sdTest.expectedUnitType, unitType)
}
}
}
func TestUnitExistsIgnored(t *testing.T) {
if !IsRunningSystemd() {
t.Skip("Test requires systemd.")
}
if os.Geteuid() != 0 {
t.Skip("Test requires root.")
}
podConfig := &configs.Cgroup{
Parent: "system.slice",
Name: "system-runc_test_exists.slice",
Resources: &configs.Resources{},
}
// Create "pods" cgroup (a systemd slice to hold containers).
pm := newManager(t, podConfig)
// create twice to make sure "UnitExists" error is ignored.
for i := 0; i < 2; i++ {
if err := pm.Apply(-1); err != nil {
t.Fatal(err)
}
}
}