go-mtree/update_test.go

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// +build go1.7
package mtree
import (
"encoding/json"
"io/ioutil"
"os"
"os/user"
"path/filepath"
"strconv"
"testing"
"time"
)
func TestUpdate(t *testing.T) {
content := []byte("I know half of you half as well as I ought to")
dir, err := ioutil.TempDir("", "test-check-keywords")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir) // clean up
tmpfn := filepath.Join(dir, "tmpfile")
if err := ioutil.WriteFile(tmpfn, content, 0666); err != nil {
t.Fatal(err)
}
// Walk this tempdir
dh, err := Walk(dir, nil, append(DefaultKeywords, "sha1"), nil)
if err != nil {
t.Fatal(err)
}
// Touch a file, so the mtime changes.
now := time.Now()
if err := os.Chtimes(tmpfn, now, now); err != nil {
t.Fatal(err)
}
if err := os.Chmod(tmpfn, os.FileMode(0600)); err != nil {
t.Fatal(err)
}
// Changing user is a little tough, but the group can be changed by a limited user to any group that the user is a member of. So just choose one that is not the current main group.
u, err := user.Current()
if err != nil {
t.Fatal(err)
}
ugroups, err := u.GroupIds()
if err != nil {
t.Fatal(err)
}
for _, ugroup := range ugroups {
if ugroup == u.Gid {
continue
}
gid, err := strconv.Atoi(ugroup)
if err != nil {
t.Fatal(ugroup)
}
if err := os.Lchown(tmpfn, -1, gid); err != nil {
t.Fatal(err)
}
}
// Check for sanity. This ought to have failures
res, err := Check(dir, dh, nil, nil)
if err != nil {
t.Fatal(err)
}
if len(res) == 0 {
t.Error("expected failures (like mtimes), but got none")
}
//dh.WriteTo(os.Stdout)
res, err = Update(dir, dh, DefaultUpdateKeywords, nil)
if err != nil {
t.Error(err)
}
if len(res) > 0 {
// pretty this shit up
buf, err := json.MarshalIndent(res, "", " ")
if err != nil {
t.Errorf("%#v", res)
}
t.Error(string(buf))
}
// Now check that we're sane again
res, err = Check(dir, dh, nil, nil)
if err != nil {
t.Fatal(err)
}
// should have no failures now
if len(res) > 0 {
// pretty this shit up
buf, err := json.MarshalIndent(res, "", " ")
if err != nil {
t.Errorf("%#v", res)
}
t.Error(string(buf))
}
}