go-mtree/keywords_linux_test.go

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// +build linux
package mtree
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"testing"
"github.com/vbatts/go-mtree/xattr"
)
func TestXattr(t *testing.T) {
testDir, present := os.LookupEnv("MTREE_TESTDIR")
if present == false {
// a bit dirty to create/destory a directory in cwd,
// but often /tmp is mounted tmpfs and doesn't support
// xattrs
testDir = "."
}
dir, err := ioutil.TempDir(testDir, "test.xattrs.")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
fh, err := os.Create(filepath.Join(dir, "file"))
if err != nil {
t.Fatal(err)
}
fh.WriteString("howdy")
fh.Sync()
if _, err := fh.Seek(0, 0); err != nil {
t.Fatal(err)
}
if err := os.Symlink("./no/such/path", filepath.Join(dir, "symlink")); err != nil {
t.Fatal(err)
}
if err := xattr.Set(dir, "user.test", []byte("directory")); err != nil {
t.Skip(fmt.Sprintf("skipping: %q does not support xattrs", dir))
}
if err := xattr.Set(filepath.Join(dir, "file"), "user.test", []byte("regular file")); err != nil {
t.Fatal(err)
}
dirstat, err := os.Lstat(dir)
if err != nil {
t.Fatal(err)
}
// Check the directory
kvs, err := xattrKeywordFunc(dir, dirstat, nil)
if err != nil {
t.Error(err)
}
if len(kvs) == 0 {
t.Errorf("expected a keyval; got none")
}
filestat, err := fh.Stat()
if err != nil {
t.Fatal(err)
}
// Check the regular file
kvs, err = xattrKeywordFunc(filepath.Join(dir, "file"), filestat, fh)
if err != nil {
t.Error(err)
}
if len(kvs) == 0 {
t.Errorf("expected a keyval; got none")
}
linkstat, err := os.Lstat(filepath.Join(dir, "symlink"))
if err != nil {
t.Fatal(err)
}
// Check a broken symlink
_, err = xattrKeywordFunc(filepath.Join(dir, "symlink"), linkstat, nil)
if err != nil {
t.Error(err)
}
}