Install
(package-install-file "ert-extras.el")
Use
(require 'ert-extras.el)
are
macro
(ert-deftest addition-works-as-expected ()
(are
(= 2 (+ 1 1))
(= 5 (+ 2 3))
(= 23 (+ 17 (* 2 3)))))
Test
M-x load-file test-ert-extras.el M-x ert-run-tests-interactively