* test/lisp/subr-tests.el (subr-tests-bug22027): Add test.

diff --git a/test/lisp/subr-tests.el b/test/lisp/subr-tests.el
index c0bfd40f806845e812f8f4ca6b885ad32912b249..54f4ab5d1b2ca34bc685c16bdbc0f51a62df4314 100644 (file)
--- a/test/lisp/subr-tests.el
+++ b/test/lisp/subr-tests.el
@@ -28,6 +28,7 @@
 ;;; Code:
 
 (require 'ert)
+(eval-when-compile (require 'cl-lib))
 
 (ert-deftest let-when-compile ()
   ;; good case
@@ -316,5 +317,14 @@ cf. Bug#25477."
   (should-not (method-files 'subr-tests--undefined-generic))
   (should-not (method-files 'subr-tests--generic-without-methods)))
 
+(ert-deftest subr-tests-bug22027 ()
+  "Test for http://debbugs.gnu.org/22027 ."
+  (let ((default "foo") res)
+    (cl-letf (((symbol-function 'read-string)
+               (lambda (_prompt _init _hist def) def)))
+      (setq res (read-passwd "pass: " 'confirm (mapconcat #'string default "")))
+      (should (string= default res)))))
+
+
 (provide 'subr-tests)
 ;;; subr-tests.el ends here