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-rw-r--r--test/lisp/emacs-lisp/bytecomp-resources/warn-free-setq.el2
-rw-r--r--test/lisp/emacs-lisp/bytecomp-resources/warn-free-variable-reference.el4
-rw-r--r--test/lisp/emacs-lisp/bytecomp-tests.el14
3 files changed, 20 insertions, 0 deletions
diff --git a/test/lisp/emacs-lisp/bytecomp-resources/warn-free-setq.el b/test/lisp/emacs-lisp/bytecomp-resources/warn-free-setq.el
new file mode 100644
index 00000000000..6e187129c9b
--- /dev/null
+++ b/test/lisp/emacs-lisp/bytecomp-resources/warn-free-setq.el
@@ -0,0 +1,2 @@
+;;; -*- lexical-binding: t -*-
+(setq foo 'bar)
diff --git a/test/lisp/emacs-lisp/bytecomp-resources/warn-free-variable-reference.el b/test/lisp/emacs-lisp/bytecomp-resources/warn-free-variable-reference.el
new file mode 100644
index 00000000000..50a95272874
--- /dev/null
+++ b/test/lisp/emacs-lisp/bytecomp-resources/warn-free-variable-reference.el
@@ -0,0 +1,4 @@
+;;; -*- lexical-binding: t -*-
+(defvar xxx-test)
+(defun foo ()
+ (setq xxx-test bar))
diff --git a/test/lisp/emacs-lisp/bytecomp-tests.el b/test/lisp/emacs-lisp/bytecomp-tests.el
index 680aa514a27..c9070c03b3f 100644
--- a/test/lisp/emacs-lisp/bytecomp-tests.el
+++ b/test/lisp/emacs-lisp/bytecomp-tests.el
@@ -26,6 +26,7 @@
;;; Commentary:
(require 'ert)
+(require 'ert-x)
(require 'cl-lib)
(require 'subr-x)
(require 'bytecomp)
@@ -546,6 +547,19 @@ Subtests signal errors if something goes wrong."
'(eval-and-compile (defmacro abc (arg) -1) (defun def () (abc 2))))
(should (equal (funcall 'def) -1)))
+(defmacro bytecomp--define-warning-file-test (file re-warning &optional reverse)
+ `(ert-deftest ,(intern (format "bytecomp-warn/%s" file)) ()
+ :expected-result ,(if reverse :failed :passed)
+ (with-current-buffer (get-buffer-create "*Compile-Log*")
+ (let ((inhibit-read-only t)) (erase-buffer))
+ (byte-compile-file ,(ert-resource-file file))
+ (ert-info ((buffer-string) :prefix "buffer: ")
+ (should (re-search-forward ,re-warning))))))
+
+(bytecomp--define-warning-file-test "warn-free-setq.el" "free.*foo")
+
+(bytecomp--define-warning-file-test "warn-free-variable-reference.el" "free.*bar")
+
(ert-deftest test-eager-load-macro-expansion-eval-when-compile ()
;; Make sure we interpret eval-when-compile forms properly. CLISP
;; and SBCL interpreter eval-when-compile (well, the CL equivalent)