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Copy pathlinux_test.go
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140 lines (120 loc) · 3.07 KB
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// +build linux
/*
* Minio Cloud Storage, (C) 2017 Minio, Inc.
*
* 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 cgroup
import (
"io/ioutil"
"os"
"testing"
)
// Testing parsing correctness for various process cgroup files.
func TestProcCGroup(t *testing.T) {
tmpPath, err := ioutil.TempFile("", "cgroup")
if err != nil {
t.Fatal(err)
}
defer os.Remove(tmpPath.Name())
cgroup := `
11:memory:/user.slice
10:blkio:/user.slice
9:hugetlb:/
8:net_cls,net_prio:/
7:perf_event:/
6:pids:/user.slice/user-1000.slice
5:devices:/user.slice
4:cpuset:/
3:cpu,cpuacct:/user.slice
2:freezer:/
1:name=systemd:/user.slice/user-1000.slice/session-1.scope
`
_, err = tmpPath.WriteString(cgroup)
if err != nil {
t.Fatal(err)
}
// Seek back to read from the beginning.
tmpPath.Seek(0, 0)
cg, err := parseProcCGroup(tmpPath)
if err != nil {
t.Fatal(err)
}
path := cg["memory"]
if len(path) == 0 {
t.Fatal("Path component cannot be empty")
}
if path != "/user.slice" {
t.Fatal("Path component cannot be empty")
}
path = cg["systemd"]
if path != "/user.slice/user-1000.slice/session-1.scope" {
t.Fatal("Path component cannot be empty")
}
// Mixed cgroups with different group names.
cgroup = `
11:memory:/newtest/newtest
10:blkio:/user.slice
9:hugetlb:/
8:net_cls,net_prio:/
7:perf_event:/
6:pids:/user.slice/user-1000.slice
5:devices:/user.slice
4:cpuset:/
3:cpu,cpuacct:/newtest/newtest
2:freezer:/
1:name=systemd:/user.slice/user-1000.slice/session-1.scope
`
// Seek back to read from the beginning.
tmpPath.Seek(0, 0)
_, err = tmpPath.WriteString(cgroup)
if err != nil {
t.Fatal(err)
}
// Seek back to read from the beginning.
tmpPath.Seek(0, 0)
cg, err = parseProcCGroup(tmpPath)
if err != nil {
t.Fatal(err)
}
path = cg["memory"]
if path != "/newtest/newtest" {
t.Fatal("Path component cannot be empty")
}
path = cg["systemd"]
if path != "/user.slice/user-1000.slice/session-1.scope" {
t.Fatal("Path component cannot be empty")
}
}
// Tests cgroup memory limit path construction.
func TestMemoryLimitPath(t *testing.T) {
testCases := []struct {
cgroupPath string
expectedPath string
}{
{
cgroupPath: "/user.slice",
expectedPath: "/sys/fs/cgroup/memory/user.slice/memory.limit_in_bytes",
},
{
cgroupPath: "/docker/testing",
expectedPath: "/sys/fs/cgroup/memory/memory.limit_in_bytes",
},
}
for i, testCase := range testCases {
actualPath := getMemoryLimitFilePath(testCase.cgroupPath)
if actualPath != testCase.expectedPath {
t.Fatalf("Test: %d: Expected: %s, got %s", i+1, testCase.expectedPath, actualPath)
}
}
}