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Diffstat (limited to 'test/lisp/files-tests.el')
| -rw-r--r-- | test/lisp/files-tests.el | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/lisp/files-tests.el b/test/lisp/files-tests.el index ae8ea41a797..fe2e958f1c3 100644 --- a/test/lisp/files-tests.el +++ b/test/lisp/files-tests.el @@ -1244,5 +1244,20 @@ See <https://debbugs.gnu.org/35241>." (executable-find (file-name-nondirectory tmpfile)))))) (delete-file tmpfile)))) +(ert-deftest files-tests-dont-rewrite-precious-files () + "Test that `file-precious-flag' forces files to be saved by +renaming only, rather than modified in-place." + (let* ((temp-file-name (make-temp-file "files-tests")) + (advice (lambda (_start _end filename &rest _r) + (should-not (string= filename temp-file-name))))) + (unwind-protect + (with-current-buffer (find-file-noselect temp-file-name) + (advice-add #'write-region :before advice) + (setq-local file-precious-flag t) + (insert "foobar") + (should (null (save-buffer)))) + (ignore-errors (advice-remove #'write-region advice)) + (ignore-errors (delete-file temp-file-name))))) + (provide 'files-tests) ;;; files-tests.el ends here |