6.1 Other Tools for Emacs Lisp ============================== Stubbing out functions or using so-called _mocks_ can make it easier to write tests. See <http://en.wikipedia.org/wiki/Mock_object> for an explanation of the corresponding concepts in object-oriented languages. ERT does not have built-in support for mocks or stubs. The package ‘el-mock’ (see <http://www.emacswiki.org/emacs/el-mock.el>) offers mocks for Emacs Lisp and can be used in conjunction with ERT.