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//go:build windows
// +build windows
package tools
import (
"crypto/sha256"
"encoding/hex"
"fmt"
"io"
"os"
"testing"
"github.com/git-lfs/git-lfs/v3/errors"
"github.com/stretchr/testify/assert"
)
func TestCloneFile(t *testing.T) {
testDir := os.Getenv("REFS_TEST_DIR")
if testDir == "" {
testDir, _ = Getwd()
}
t.Logf("testing on: %s", testDir)
supported, err := CheckCloneFileSupported(testDir)
if err != nil || !supported {
t.Skip(err)
}
testCases := []struct {
name string
size int64
}{
{"Small", 123},
{"Smaller than 4K", 4*1024 - 1},
{"Equal to 4K", 4 * 1024},
{"Larger than 4K", 4*1024 + 1},
{"Smaller than 64K", 64*1024 - 1},
{"Equal to 64K", 64 * 1024},
{"Larger than 64K", 64*1024 + 1},
{"Large", 12345678},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
as := assert.New(t)
src, err := os.CreateTemp(testDir, tc.name+"_src")
as.NoError(err)
dst, err := os.CreateTemp(testDir, tc.name+"_dst")
as.NoError(err)
srcHash, err := fillFile(src, tc.size)
as.NoError(err)
ok, err := CloneFile(dst, src)
as.NoError(err)
as.True(ok)
sha := sha256.New()
dst.Seek(0, io.SeekStart)
io.Copy(sha, dst)
dstHash := hex.EncodeToString(sha.Sum(nil))
as.Equal(srcHash, dstHash)
})
}
}
func fillFile(target *os.File, size int64) (hash string, err error) {
str := make([]byte, 1024)
for i := 0; i < 1023; i++ {
str[i] = fmt.Sprintf("%x", i%16)[0]
}
str[1023] = '\n'
for i := int64(0); i < size; i += 1024 {
_, err := target.Write(str)
if err != nil {
panic(err)
}
}
err = target.Truncate(size)
if err != nil {
return "", err
}
err = target.Sync()
if err != nil {
return "", err
}
_, err = target.Seek(0, io.SeekStart)
if err != nil {
return "", err
}
sha := sha256.New()
copySize, err := io.Copy(sha, target)
if err != nil {
return "", err
}
if size != copySize {
return "", errors.New("size mismatch")
}
return hex.EncodeToString(sha.Sum(nil)), nil
}
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