(require 'ert) (ert-deftest feature-gnutls () (should (gnutls-available-p))) (ert-deftest feature-json () (should (progn (require 'json) (fboundp json-serialize)))) (ert-deftest feature-pbm () (should (image-type-available-p 'pbm))) (ert-deftest feature-xpm () (should (image-type-available-p 'xpm))) (ert-deftest feature-bmp () (should (image-type-available-p 'bmp))) (ert-deftest feature-gif () (should (image-type-available-p 'gif))) (ert-deftest feature-png () (should (image-type-available-p 'png))) (ert-deftest feature-xpm () (should (image-type-available-p 'xpm))) (ert-deftest feature-jpeg () (should (image-type-available-p 'jpeg))) (ert-deftest feature-tiff () (should (image-type-available-p 'tiff))) (ert-deftest feature-svg () (should (image-type-available-p 'svg)))