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package archive
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"strings"
"testing"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/gitaly/v16/internal/git/gittest"
"gitlab.com/gitlab-org/gitaly/v16/internal/helper/perm"
"gitlab.com/gitlab-org/gitaly/v16/internal/testhelper"
"gitlab.com/gitlab-org/gitaly/v16/internal/testhelper/testcfg"
)
func TestWriteTarball(t *testing.T) {
t.Parallel()
ctx := testhelper.Context(t)
tempDir := testhelper.TempDir(t)
srcDir := filepath.Join(tempDir, "src")
// regular file
writeFile(t, filepath.Join(srcDir, "a.txt"), []byte("a"))
// empty dir
require.NoError(t, os.Mkdir(filepath.Join(srcDir, "empty_dir"), perm.PublicDir))
// file with long name
writeFile(t, filepath.Join(srcDir, strings.Repeat("b", 150)+".txt"), []byte("b"))
// regular file that is not expected to be part of the archive (not in the members list)
writeFile(t, filepath.Join(srcDir, "excluded.txt"), []byte("excluded"))
// folder with multiple files all expected to be archived
nestedPath := filepath.Join(srcDir, "nested1")
for i := 0; i < readDirEntriesPageSize+1; i++ {
writeFile(t, filepath.Join(nestedPath, fmt.Sprintf("%d.txt", i)), []byte{byte(i)})
}
// nested file that is not expected to be part of the archive
writeFile(t, filepath.Join(srcDir, "nested2/nested/nested/c.txt"), []byte("c"))
// deeply nested file
writeFile(t, filepath.Join(srcDir, "nested2/nested/nested/nested/nested/d.txt"), []byte("d"))
// file that is used to create a symbolic link, is not expected to be part of the archive
writeFile(t, filepath.Join(srcDir, "nested3/target.txt"), []byte("target"))
// link to the file above
require.NoError(t, os.Symlink(filepath.Join(srcDir, "nested3/target.txt"), filepath.Join(srcDir, "link.to.target.txt")))
// directory that is a target of the symlink should not be archived
writeFile(t, filepath.Join(srcDir, "nested4/stub.txt"), []byte("symlinked"))
// link to the folder above
require.NoError(t, os.Symlink(filepath.Join(srcDir, "nested4"), filepath.Join(srcDir, "link.to.nested4")))
tarPath := filepath.Join(tempDir, "out.tar")
archFile, err := os.Create(tarPath)
require.NoError(t, err)
defer func() { _ = archFile.Close() }()
err = writeTarball(
ctx,
archFile,
srcDir,
"a.txt",
strings.Repeat("b", 150)+".txt",
"nested1",
"nested2/nested/nested/nested/nested/d.txt",
"link.to.target.txt",
"link.to.nested4",
)
require.NoError(t, err)
require.NoError(t, archFile.Close())
cfg := testcfg.Build(t)
dstDir := filepath.Join(tempDir, "dst")
require.NoError(t, os.Mkdir(dstDir, perm.PublicDir))
output, err := exec.Command("tar", "-xf", tarPath, "-C", dstDir).CombinedOutput()
require.NoErrorf(t, err, "%s", output)
diff := gittest.ExecOpts(t, cfg, gittest.ExecConfig{ExpectedExitCode: 1}, "diff", "--no-index", "--name-only", "--exit-code", dstDir, srcDir)
expected := strings.Join(
[]string{
filepath.Join(srcDir, "excluded.txt"),
filepath.Join(srcDir, "nested2/nested/nested/c.txt"),
filepath.Join(srcDir, "nested3/target.txt"),
filepath.Join(srcDir, "nested4/stub.txt\n"),
},
"\n",
)
require.Equal(t, expected, string(diff))
}
func writeFile(tb testing.TB, path string, data []byte) {
tb.Helper()
require.NoError(tb, os.MkdirAll(filepath.Dir(path), perm.PrivateDir))
require.NoError(tb, os.WriteFile(path, data, perm.PrivateFile))
}
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