; Instrument tramp-tests.el

1 files changed, 8 insertions, 1 deletions

diff --git a/test/lisp/net/tramp-tests.el b/test/lisp/net/tramp-tests.el
index 6bbe9691286..0f40468ec98 100644
--- a/test/lisp/net/tramp-tests.el
+++ b/test/lisp/net/tramp-tests.el
@@ -639,9 +639,13 @@ This checks also `file-name-as-directory', `file-name-directory',
   (should-not
    (unhandled-file-name-directory "/method:host:/path/to/file"))
 
+  (unwind-protect
   ;; Bug#10085.
   (dolist (n-e '(nil t))
     (let ((non-essential n-e))
+      (when (getenv "NIX_STORE")
+        (dolist (elt (all-completions "tramp-" obarray 'functionp))
+          (trace-function-background (intern elt))))
       (dolist (file
                `(,(file-remote-p tramp-test-temporary-file-directory 'method)
                  ,(file-remote-p tramp-test-temporary-file-directory 'host)))
@@ -656,7 +660,10 @@ This checks also `file-name-as-directory', `file-name-directory',
             (file-name-as-directory file)
             (if (tramp-completion-mode-p) file (concat file "./"))))
           (should (string-equal (file-name-directory file) file))
-          (should (string-equal (file-name-nondirectory file) "")))))))
+          (should (string-equal (file-name-nondirectory file) ""))))))
+  (when (getenv "NIX_STORE")
+    (untrace-all)
+    (message "%s" (with-current-buffer trace-buffer (buffer-string))))))
 
 (ert-deftest tramp-test07-file-exists-p ()
   "Check `file-exist-p', `write-region' and `delete-file'."