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/*
Copyright The containerd 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 fs2
import (
"path/filepath"
"strings"
"testing"
"github.com/opencontainers/cgroups"
)
func TestParseCgroupFromReader(t *testing.T) {
cases := map[string]string{
"0::/user.slice/user-1001.slice/session-1.scope\n": "/user.slice/user-1001.slice/session-1.scope",
"2:cpuset:/foo\n1:name=systemd:/\n": "",
"2:cpuset:/foo\n1:name=systemd:/\n0::/user.slice/user-1001.slice/session-1.scope\n": "/user.slice/user-1001.slice/session-1.scope",
}
for s, expected := range cases {
g, err := parseCgroupFromReader(strings.NewReader(s))
if expected != "" {
if g != expected {
t.Errorf("expected %q, got %q", expected, g)
}
if err != nil {
t.Error(err)
}
} else {
if err == nil {
t.Error("error is expected")
}
}
}
}
func TestDefaultDirPath(t *testing.T) {
if !cgroups.IsCgroup2UnifiedMode() {
t.Skip("need cgroupv2")
}
// same code as in defaultDirPath()
ownCgroup, err := parseCgroupFile("/proc/self/cgroup")
if err != nil {
// Not a test failure, but rather some weird
// environment so we can't run this test.
t.Skipf("can't get own cgroup: %v", err)
}
ownCgroup = filepath.Dir(ownCgroup)
cases := []struct {
cgPath string
cgParent string
cgName string
expected string
}{
{
cgPath: "/foo/bar",
expected: "/sys/fs/cgroup/foo/bar",
},
{
cgPath: "foo/bar",
expected: filepath.Join(UnifiedMountpoint, ownCgroup, "foo/bar"),
},
}
for _, c := range cases {
cg := &cgroups.Cgroup{
Path: c.cgPath,
Parent: c.cgParent,
Name: c.cgName,
}
got, err := defaultDirPath(cg)
if err != nil {
t.Fatal(err)
}
if got != c.expected {
t.Fatalf("expected %q, got %q", c.expected, got)
}
}
}
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