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|
//go:build linux
package mount
import (
"os"
"path"
"slices"
"testing"
"github.com/stretchr/testify/require"
)
func TestMountOptionsParsing(t *testing.T) {
options := "noatime,ro,size=10k"
flag, data := ParseOptions(options)
if data != "size=10k" {
t.Fatalf("Expected size=10 got %s", data)
}
expectedFlag := NOATIME | RDONLY
if flag != expectedFlag {
t.Fatalf("Expected %d got %d", expectedFlag, flag)
}
}
func TestMounted(t *testing.T) {
if os.Getuid() != 0 {
t.Skip("root required")
}
tmp := path.Join(os.TempDir(), "mount-tests")
if err := os.MkdirAll(tmp, 0o777); err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmp)
var (
sourceDir = path.Join(tmp, "source")
targetDir = path.Join(tmp, "target")
sourcePath = path.Join(sourceDir, "file.txt")
targetPath = path.Join(targetDir, "file.txt")
)
if err := os.Mkdir(sourceDir, 0o777); err != nil {
t.Fatal(err)
}
if err := os.Mkdir(targetDir, 0o777); err != nil {
t.Fatal(err)
}
f, err := os.Create(sourcePath)
if err != nil {
t.Fatal(err)
}
if _, err = f.WriteString("hello"); err != nil {
t.Fatal(err)
}
f.Close()
f, err = os.Create(targetPath)
if err != nil {
t.Fatal(err)
}
f.Close()
if err := Mount(sourceDir, targetDir, none, "bind,rw"); err != nil {
t.Fatal(err)
}
defer func() {
if err := Unmount(targetDir); err != nil {
t.Fatal(err)
}
}()
mounted, err := Mounted(targetDir)
if err != nil {
t.Fatal(err)
}
if !mounted {
t.Fatalf("Expected %s to be mounted", targetDir)
}
if _, err := os.Stat(targetDir); err != nil {
t.Fatal(err)
}
}
func TestMountReadonly(t *testing.T) {
if os.Getuid() != 0 {
t.Skip("root required")
}
tmp := path.Join(os.TempDir(), "mount-tests")
if err := os.MkdirAll(tmp, 0o777); err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmp)
var (
sourceDir = path.Join(tmp, "source")
targetDir = path.Join(tmp, "target")
sourcePath = path.Join(sourceDir, "file.txt")
targetPath = path.Join(targetDir, "file.txt")
)
if err := os.Mkdir(sourceDir, 0o777); err != nil {
t.Fatal(err)
}
if err := os.Mkdir(targetDir, 0o777); err != nil {
t.Fatal(err)
}
f, err := os.Create(sourcePath)
if err != nil {
t.Fatal(err)
}
_, err = f.WriteString("hello")
if err != nil {
t.Fatal(err)
}
f.Close()
f, err = os.Create(targetPath)
if err != nil {
t.Fatal(err)
}
f.Close()
if err := Mount(sourceDir, targetDir, none, "bind,ro"); err != nil {
t.Fatal(err)
}
defer func() {
if err := Unmount(targetDir); err != nil {
t.Fatal(err)
}
}()
f, err = os.OpenFile(targetPath, os.O_RDWR, 0o777)
if err == nil {
f.Close()
t.Fatal("Should not be able to open a ro file as rw")
}
}
func TestGetMounts(t *testing.T) {
mounts, err := GetMounts()
if err != nil {
t.Fatal(err)
}
if !slices.ContainsFunc(mounts, func(entry *Info) bool {
return entry.Mountpoint == "/"
}) {
t.Fatal("/ should be mounted at least")
}
}
func TestMergeTmpfsOptions(t *testing.T) {
options := []string{"noatime", "ro", "size=10k", "defaults", "atime", "defaults", "rw", "rprivate", "size=1024k", "slave"}
expected := []string{"atime", "rw", "size=1024k", "slave"}
merged, err := MergeTmpfsOptions(options)
if err != nil {
t.Fatal(err)
}
require.Equal(t, expected, merged)
options = []string{"noatime", "ro", "size=10k", "atime", "rw", "rprivate", "size=1024k", "slave", "size"}
_, err = MergeTmpfsOptions(options)
if err == nil {
t.Fatal("Expected error got nil")
}
}
|
