Added test make rules for Emacs 23

.gitignore

@@ -0,0 +1,2 @@
+*.elc
+/test/ert.el

Makefile

@@ -1,7 +1,16 @@
-.PHONY: test
+.PHONY: test test-nw test-emacs23 test-emacs23-nw
 
 test:
  emacs -Q -L . -l test/popwin-test.el
 
 test-nw:
  emacs -Q -nw -L . -l test/popwin-test.el
+
+test-emacs23: test/ert.el
+ emacs23 -Q -L . -l test/ert.el -l test/popwin-test.el
+
+test-emacs23-nw: test/ert.el
+ emacs23 -Q -nw -L . -l test/ert.el -l test/popwin-test.el
+
+test/ert.el:
+ wget https://git.savannah.gnu.org/cgit/emacs.git/plain/lisp/emacs-lisp/ert.el -O $@