1package moxio

2

3import (

4 "fmt"

5 "os"

6 "path/filepath"

7 "testing"

8

9 "github.com/mjl-/mox/mlog"

10)

11

12func tcheckf(t *testing.T, err error, format string, args ...any) {

13 if err != nil {

14 t.Helper()

15 t.Fatalf("%s: %s", fmt.Sprintf(format, args...), err)

16 }

17}

18

19func TestLinkOrCopy(t *testing.T) {

20 log := mlog.New("linkorcopy", nil)

21

22 // link in same directory. file exists error. link to file in non-existent

23 // directory (exists error). link to file in system temp dir (hopefully other file

24 // system).

25 src := "linkorcopytest-src.txt"

26 f, err := os.Create(src)

27 tcheckf(t, err, "creating test file")

28 defer os.Remove(src)

29 defer f.Close()

30 err = LinkOrCopy(log, "linkorcopytest-dst.txt", src, nil, false)

31 tcheckf(t, err, "linking file")

32 err = os.Remove("linkorcopytest-dst.txt")

33 tcheckf(t, err, "remove dst")

34

35 err = LinkOrCopy(log, "bogus/linkorcopytest-dst.txt", src, nil, false)

36 if err == nil || !os.IsNotExist(err) {

37 t.Fatalf("expected is not exist, got %v", err)

38 }

39

40 // Try with copying the file. This can currently only really happen on systems that

41 // don't support hardlinking. Because other code and tests already use os.Rename on

42 // similar files, which will fail for being cross-filesystem (and we do want

43 // users/admins to have the mox temp dir on the same file system as the account

44 // files).

45 dst := filepath.Join(os.TempDir(), "linkorcopytest-dst.txt")

46 err = LinkOrCopy(log, dst, src, nil, true)

47 tcheckf(t, err, "copy file")

48 err = os.Remove(dst)

49 tcheckf(t, err, "removing dst")

50

51 // Copy based on open file.

52 _, err = f.Seek(0, 0)

53 tcheckf(t, err, "seek to start")

54 err = LinkOrCopy(log, dst, src, f, true)

55 tcheckf(t, err, "copy file from reader")

56 err = os.Remove(dst)

57 tcheckf(t, err, "removing dst")

58}

59