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package git
import (
"os"
"path/filepath"
"strings"
"testing"
"github.com/go-git/go-billy/v5/osfs"
"github.com/go-git/go-git/v5/plumbing/cache"
"github.com/go-git/go-git/v5/storage/filesystem"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// For additional context: #1159.
func TestIndexEntrySizeUpdatedForNonRegularFiles(t *testing.T) {
w := osfs.New(t.TempDir(), osfs.WithBoundOS())
dot, err := w.Chroot(GitDirName)
require.NoError(t, err)
s := filesystem.NewStorage(dot, cache.NewObjectLRUDefault())
r, err := Init(s, w)
require.NoError(t, err)
require.NotNil(t, r)
wt, err := r.Worktree()
require.NoError(t, err)
require.NotNil(t, wt)
file := "LICENSE"
f, err := w.OpenFile(file, os.O_CREATE|os.O_WRONLY, 0o666)
require.NoError(t, err)
require.NotNil(t, f)
content := []byte(strings.Repeat("a\n", 1000))
_, err = f.Write(content)
require.NoError(t, err)
err = f.Close()
require.NoError(t, err)
_, err = wt.Add(file)
require.NoError(t, err)
_, err = wt.Commit("add file", &CommitOptions{})
require.NoError(t, err)
st, err := wt.StatusWithOptions(StatusOptions{Strategy: Preload})
require.NoError(t, err)
assert.Equal(t,
&FileStatus{Worktree: Unmodified, Staging: Unmodified},
st.File(file))
// Make the file not regular. The same would apply to a transition
// from regular file to symlink.
err = os.Chmod(filepath.Join(w.Root(), file), 0o777)
require.NoError(t, err)
f, err = w.OpenFile(file, os.O_APPEND|os.O_RDWR, 0o777)
require.NoError(t, err)
require.NotNil(t, f)
_, err = f.Write([]byte("\n\n"))
require.NoError(t, err)
err = f.Close()
require.NoError(t, err)
_, err = wt.Add(file)
assert.NoError(t, err)
// go-git's Status diverges from "git status", so this check does not
// fail, even when the issue is present. As at this point "git status"
// reports the unstaged file was modified while "git diff" would return
// empty, as the files are the same but the index has the incorrect file
// size.
st, err = wt.StatusWithOptions(StatusOptions{Strategy: Preload})
assert.NoError(t, err)
assert.Equal(t,
&FileStatus{Worktree: Unmodified, Staging: Modified},
st.File(file))
idx, err := wt.r.Storer.Index()
assert.NoError(t, err)
require.NotNil(t, idx)
require.Len(t, idx.Entries, 1)
// Check whether the index was updated with the two new line breaks.
assert.Equal(t, uint32(len(content)+2), idx.Entries[0].Size)
}
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