Add a test for primitive advicing effectiveness

	* test/src/comp-test-funcs.el (comp-test-primitive-advice-f): New
	function.
	* test/src/comp-tests.el (comp-test-primitive-advice): New test.

2 files changed, 17 insertions, 0 deletions

diff --git a/test/src/comp-test-funcs.el b/test/src/comp-test-funcs.el
index fe9943a1b91..19acec2716e 100644
--- a/test/src/comp-test-funcs.el
+++ b/test/src/comp-test-funcs.el
@@ -337,6 +337,10 @@
         (concat head-padding (substring str from-idx idx)
                 tail-padding ellipsis)))))
 
+(defun comp-test-primitive-advice-f (x y)
+  (declare (speed 2))
+  (+ x y))
+
 
 ;;;;;;;;;;;;;;;;;;;;
 ;; Tromey's tests ;;
diff --git a/test/src/comp-tests.el b/test/src/comp-tests.el
index 220bf1c7736..356bd876ffb 100644
--- a/test/src/comp-tests.el
+++ b/test/src/comp-tests.el
@@ -375,6 +375,19 @@ https://lists.gnu.org/archive/html/bug-gnu-emacs/2020-03/msg00914.html."
   (should (string= (comp-test-42360-f "Nel mezzo del " 18 0 32 "yyy" nil)
                    "Nel mezzo del     yyy")))
 
+(defvar comp-test-primitive-advice)
+(ert-deftest comp-test-primitive-advice ()
+  "Test effectiveness of primitve advicing."
+  (let (comp-test-primitive-advice
+        (f (lambda (&rest args)
+             (setq comp-test-primitive-advice args))))
+    (advice-add #'+ :before f)
+    (unwind-protect
+        (progn
+          (should (= (comp-test-primitive-advice-f 3 4) 7))
+          (should (equal comp-test-primitive-advice '(3 4))))
+      (advice-remove #'+ f))))
+
 
 ;;;;;;;;;;;;;;;;;;;;;
 ;; Tromey's tests. ;;