X-Git-Url: http://git.chise.org/gitweb/?p=chise%2Fxemacs-chise.git.1;a=blobdiff_plain;f=tests%2Fautomated%2Fbyte-compiler-tests.el;h=21c110f8eac20667abf48a6afc3bc0a7320e6235;hp=87612aef72f0af40251dc5dec62a0b99e2953195;hb=46f51e794ddb493a8a76ec2f3be00b41e3b0be22;hpb=976b002b16336930724ae22476014583ad022e7d

diff --git a/tests/automated/byte-compiler-tests.el b/tests/automated/byte-compiler-tests.el
index 87612ae..21c110f 100644
--- a/tests/automated/byte-compiler-tests.el
+++ b/tests/automated/byte-compiler-tests.el
@@ -91,3 +91,30 @@
  error "`let' bindings can have only one value-form"
  (eval '(let* ((x 1 2)) 3)))
 
+(defmacro before-and-after-compile-equal (&rest form)
+  `(Assert (equal (funcall (quote (lambda () ,@form)))
+		 (funcall (byte-compile (quote (lambda () ,@form)))))))
+
+(defvar simplyamarker (point-min-marker))
+
+;; The byte optimizer must be careful with +/- with a single argument.
+
+(before-and-after-compile-equal (+))
+(before-and-after-compile-equal (+ 2 2))
+(before-and-after-compile-equal (+ 2 1))
+(before-and-after-compile-equal (+ 1 2))
+;; (+ 1) is OK. but (+1) signals an error.
+(before-and-after-compile-equal (+ 1))
+(before-and-after-compile-equal (+ 3))
+(before-and-after-compile-equal (+ simplyamarker 1))
+;; The optimization (+ m) --> m is invalid when m is a marker.
+;; Currently the following test fails - controversial.
+;; (before-and-after-compile-equal (+ simplyamarker))
+;; Same tests for minus.
+(before-and-after-compile-equal (- 2 2))
+(before-and-after-compile-equal (- 2 1))
+(before-and-after-compile-equal (- 1 2))
+(before-and-after-compile-equal (- 1))
+(before-and-after-compile-equal (- 3))
+(before-and-after-compile-equal (- simplyamarker 1))
+(before-and-after-compile-equal (- simplyamarker))