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// SPDX-License-Identifier: GPL-3.0-or-later
package apply
import (
"os"
"path/filepath"
"testing"
"time"
)
func write(t *testing.T, path, content string, mode os.FileMode) string {
t.Helper()
if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
t.Fatal(err)
}
if err := os.WriteFile(path, []byte(content), mode); err != nil {
t.Fatal(err)
}
return path
}
func TestCopyPreservesModeAndModTime(t *testing.T) {
dir := t.TempDir()
src := write(t, filepath.Join(dir, "a", "x.pdf"), "content", 0o640)
old := time.Date(2026, 3, 4, 5, 6, 7, 0, time.UTC)
if err := os.Chtimes(src, old, old); err != nil {
t.Fatal(err)
}
dst := filepath.Join(dir, "b", "x.pdf")
if err := copyFile(src, dst); err != nil {
t.Fatal(err)
}
fi, err := os.Stat(dst)
if err != nil {
t.Fatal(err)
}
if b, _ := os.ReadFile(dst); string(b) != "content" {
t.Errorf("content = %q", b)
}
if fi.Mode().Perm() != 0o640 {
t.Errorf("mode = %v, want 0640", fi.Mode().Perm())
}
if !fi.ModTime().Equal(old) {
t.Errorf("mtime = %v, want %v", fi.ModTime(), old)
}
if si, _ := os.Stat(src); si == nil {
t.Error("copy removed its source")
}
}
func TestCopyLeavesNoTempOnFailure(t *testing.T) {
dir := t.TempDir()
src := write(t, filepath.Join(dir, "x.pdf"), "content", 0o644)
// A destination directory that is really a file: the rename must fail.
blocked := write(t, filepath.Join(dir, "blocked"), "not a directory", 0o644)
if err := copyFile(src, filepath.Join(blocked, "x.pdf")); err == nil {
t.Fatal("copy into a non-directory succeeded")
}
entries, err := os.ReadDir(dir)
if err != nil {
t.Fatal(err)
}
for _, e := range entries {
if len(e.Name()) > 6 && e.Name()[:7] == ".krino-" {
t.Errorf("a temporary file was left behind: %s", e.Name())
}
}
}
// TestMoveAcrossFilesystems exercises the EXDEV fallback. /dev/shm is a
// second filesystem on Linux; the test skips where there is none.
func TestMoveAcrossFilesystems(t *testing.T) {
other, err := os.MkdirTemp("/dev/shm", "krino-apply-")
if err != nil {
t.Skip("no second filesystem available:", err)
}
defer os.RemoveAll(other)
src := write(t, filepath.Join(other, "x.pdf"), "across", 0o644)
dst := filepath.Join(t.TempDir(), "x.pdf")
if err := moveFile(src, dst); err != nil {
t.Fatal(err)
}
if b, err := os.ReadFile(dst); err != nil || string(b) != "across" {
t.Errorf("destination = %q, %v", b, err)
}
if _, err := os.Stat(src); !os.IsNotExist(err) {
t.Error("the source survived a cross-filesystem move")
}
}
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