| 10 | ) |
| 11 | |
| 12 | func TestRootRejectsDirectorySwapDuringOpen(t *testing.T) { |
| 13 | rootDir := t.TempDir() |
| 14 | originalDir := filepath.Join(rootDir, "nested") |
| 15 | require.NoError(t, os.Mkdir(originalDir, 0o755)) |
| 16 | redirectedDir := filepath.Join(rootDir, "redirected") |
| 17 | require.NoError(t, os.Mkdir(redirectedDir, 0o755)) |
| 18 | |
| 19 | root, err := OpenRoot(rootDir) |
| 20 | require.NoError(t, err) |
| 21 | defer root.Close() |
| 22 | |
| 23 | defaultOpenRoot := root.openRoot |
| 24 | swapped := false |
| 25 | root.openRoot = func(parent *os.Root, name string) (*os.Root, error) { |
| 26 | if name == "nested" && !swapped { |
| 27 | swapped = true |
| 28 | moved := filepath.Join(rootDir, "moved") |
| 29 | require.NoError(t, os.Rename(originalDir, moved)) |
| 30 | if err := os.Symlink("redirected", originalDir); err != nil { |
| 31 | t.Skipf("directory symlinks unavailable: %v", err) |
| 32 | } |
| 33 | } |
| 34 | return defaultOpenRoot(parent, name) |
| 35 | } |
| 36 | |
| 37 | err = root.WriteFile(filepath.Join("nested", "file.txt"), []byte("content"), 0o644, 0o755, false) |
| 38 | require.Error(t, err) |
| 39 | assert.NoFileExists(t, filepath.Join(redirectedDir, "file.txt")) |
| 40 | assert.NoFileExists(t, filepath.Join(rootDir, "moved", "file.txt")) |
| 41 | } |