ert-with-function-mocked: New macro

* lisp/emacs-lisp/ert-x.el (ert-with-function-mocked): New macro which
allows evaluating code while particular function is replaced with
a mock.  The original definition of said function is restored once the
macro finishes.

1 files changed, 3 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 9e000be4a7a..04c1ee83aba 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -104,6 +104,9 @@ different group ID.
 ** Autoload files can be generated without timestamps,
 by setting `autoload-timestamps' to nil.
 
+** `ert-with-function-mocked' of 'ert-x package allows mocking of functions
+in unit tests.
+
 
 * Changes in Emacs 25.2 on Non-Free Operating Systems