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;;; bytecomp-testsuite.el

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;; Copyright (C) 2008-2015 Free Software Foundation, Inc.
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;; Author:         Shigeru Fukaya <shigeru.fukaya@gmail.com>
;; Created:        November 2008
;; Keywords:       internal
;; Human-Keywords: internal

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

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(require 'ert)

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;;; Code:
(defconst byte-opt-testsuite-arith-data
  '(
    ;; some functional tests
    (let ((a most-positive-fixnum) (b 1) (c 1.0))  (+ a b c))
    (let ((a most-positive-fixnum) (b -2) (c 1.0)) (- a b c))
    (let ((a most-positive-fixnum) (b 2) (c 1.0))  (* a b c))
    (let ((a 3) (b 2) (c 1.0))                     (/ a b c))
    (let ((a (+ 1 (expt 2 -64))) (b (expt 2 -65))) (+ a -1 b))
    (let ((a (+ 1 (expt 2 -64))) (b (expt 2 -65))) (- a 1 (- b)))
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    ;; This fails.  Should it be a bug?
    ;; (let ((a (expt 2 -1074)) (b 0.125))		   (* a 8 b))
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    (let ((a 1.0))				   (* a 0))
    (let ((a 1.0))				   (* a 2.0 0))
    (let ((a 1.0))				   (/ 0 a))
    (let ((a 1.0))				   (/ 3 a 2))
    (let ((a most-positive-fixnum) (b 2.0))	   (* a 2 b))
    (let ((a 3) (b 2))				   (/ a b 1.0))
    (/ 3 -1)
    (+ 4 3 2 1)
    (+ 4 3 2.0 1)
    (- 4 3 2 1)				; not new, for reference
    (- 4 3 2.0 1)			; not new, for reference
    (* 4 3 2 1)
    (* 4 3 2.0 1)
    (/ 4 3 2 1)
    (/ 4 3 2.0 1)
    (let ((a 3) (b 2))				   (+ a b 1))
    (let ((a 3) (b 2))				   (+ a b -1))
    (let ((a 3) (b 2))				   (- a b 1))
    (let ((a 3) (b 2))				   (- a b -1))
    (let ((a 3) (b 2))				   (+ a b a 1))
    (let ((a 3) (b 2))				   (+ a b a -1))
    (let ((a 3) (b 2))				   (- a b a 1))
    (let ((a 3) (b 2))				   (- a b a -1))
    (let ((a 3) (b 2))				   (* a b -1))
    (let ((a 3) (b 2))				   (* a -1))
    (let ((a 3) (b 2))				   (/ a b 1))
    (let ((a 3) (b 2))				   (/ (+ a b) 1))

    ;; coverage test
    (let ((a 3) (b 2) (c 1.0)) (+))
    (let ((a 3) (b 2) (c 1.0)) (+ 2))
    (let ((a 3) (b 2) (c 1.0)) (+ 2 0))
    (let ((a 3) (b 2) (c 1.0)) (+ 2 0.0))
    (let ((a 3) (b 2) (c 1.0)) (+ 2.0))
    (let ((a 3) (b 2) (c 1.0)) (+ 2.0 0))
    (let ((a 3) (b 2) (c 1.0)) (+ 2.0 0.0))
    (let ((a 3) (b 2) (c 1.0)) (+ 0 2))
    (let ((a 3) (b 2) (c 1.0)) (+ 0 2.0))
    (let ((a 3) (b 2) (c 1.0)) (+ 0.0 2))
    (let ((a 3) (b 2) (c 1.0)) (+ 0.0 2.0))
    (let ((a 3) (b 2) (c 1.0)) (+ a))
    (let ((a 3) (b 2) (c 1.0)) (+ a 0))
    (let ((a 3) (b 2) (c 1.0)) (+ a 0.0))
    (let ((a 3) (b 2) (c 1.0)) (+ 0 a))
    (let ((a 3) (b 2) (c 1.0)) (+ 0.0 a))
    (let ((a 3) (b 2) (c 1.0)) (+ c 0))
    (let ((a 3) (b 2) (c 1.0)) (+ c 0.0))
    (let ((a 3) (b 2) (c 1.0)) (+ 0 c))
    (let ((a 3) (b 2) (c 1.0)) (+ 0.0 c))
    (let ((a 3) (b 2) (c 1.0)) (+ a b 0 c 0))
    (let ((a 3) (b 2) (c 1.0)) (+ 0 a))
    (let ((a 3) (b 2) (c 1.0)) (+ 0 a b))
    (let ((a 3) (b 2) (c 1.0)) (+ 0 a b c))
    (let ((a 3) (b 2) (c 1.0)) (+ 1 2 3))
    (let ((a 3) (b 2) (c 1.0)) (+ 3.0 2.0 1))
    (let ((a 3) (b 2) (c 1.0)) (+ 3.0 2.0 1 4))
    (let ((a 3) (b 2) (c 1.0)) (+ a 1))
    (let ((a 3) (b 2) (c 1.0)) (+ a -1))
    (let ((a 3) (b 2) (c 1.0)) (+ 1 a))
    (let ((a 3) (b 2) (c 1.0)) (+ -1 a))
    (let ((a 3) (b 2) (c 1.0)) (+ c 1))
    (let ((a 3) (b 2) (c 1.0)) (+ c -1))
    (let ((a 3) (b 2) (c 1.0)) (+ 1 c))
    (let ((a 3) (b 2) (c 1.0)) (+ -1 c))
    (let ((a 3) (b 2) (c 1.0)) (+ a b 0))
    (let ((a 3) (b 2) (c 1.0)) (+ a b 1))
    (let ((a 3) (b 2) (c 1.0)) (+ a b -1))
    (let ((a 3) (b 2) (c 1.0)) (+ a b 2))
    (let ((a 3) (b 2) (c 1.0)) (+ 1 a b c))
    (let ((a 3) (b 2) (c 1.0)) (+ a b c 0))
    (let ((a 3) (b 2) (c 1.0)) (+ a b c 1))
    (let ((a 3) (b 2) (c 1.0)) (+ a b c -1))

    (let ((a 3) (b 2) (c 1.0)) (-))
    (let ((a 3) (b 2) (c 1.0)) (- 2))
    (let ((a 3) (b 2) (c 1.0)) (- 2 0))
    (let ((a 3) (b 2) (c 1.0)) (- 2 0.0))
    (let ((a 3) (b 2) (c 1.0)) (- 2.0))
    (let ((a 3) (b 2) (c 1.0)) (- 2.0 0))
    (let ((a 3) (b 2) (c 1.0)) (- 2.0 0.0))
    (let ((a 3) (b 2) (c 1.0)) (- 0 2))
    (let ((a 3) (b 2) (c 1.0)) (- 0 2.0))
    (let ((a 3) (b 2) (c 1.0)) (- 0.0 2))
    (let ((a 3) (b 2) (c 1.0)) (- 0.0 2.0))
    (let ((a 3) (b 2) (c 1.0)) (- a))
    (let ((a 3) (b 2) (c 1.0)) (- a 0))
    (let ((a 3) (b 2) (c 1.0)) (- a 0.0))
    (let ((a 3) (b 2) (c 1.0)) (- 0 a))
    (let ((a 3) (b 2) (c 1.0)) (- 0.0 a))
    (let ((a 3) (b 2) (c 1.0)) (- c 0))
    (let ((a 3) (b 2) (c 1.0)) (- c 0.0))
    (let ((a 3) (b 2) (c 1.0)) (- 0 c))
    (let ((a 3) (b 2) (c 1.0)) (- 0.0 c))
    (let ((a 3) (b 2) (c 1.0)) (- a b 0 c 0))
    (let ((a 3) (b 2) (c 1.0)) (- 0 a))
    (let ((a 3) (b 2) (c 1.0)) (- 0 a b))
    (let ((a 3) (b 2) (c 1.0)) (- 0 a b c))
    (let ((a 3) (b 2) (c 1.0)) (- 1 2 3))
    (let ((a 3) (b 2) (c 1.0)) (- 3.0 2.0 1))
    (let ((a 3) (b 2) (c 1.0)) (- 3.0 2.0 1 4))
    (let ((a 3) (b 2) (c 1.0)) (- a 1))
    (let ((a 3) (b 2) (c 1.0)) (- a -1))
    (let ((a 3) (b 2) (c 1.0)) (- 1 a))
    (let ((a 3) (b 2) (c 1.0)) (- -1 a))
    (let ((a 3) (b 2) (c 1.0)) (- c 1))
    (let ((a 3) (b 2) (c 1.0)) (- c -1))
    (let ((a 3) (b 2) (c 1.0)) (- 1 c))
    (let ((a 3) (b 2) (c 1.0)) (- -1 c))
    (let ((a 3) (b 2) (c 1.0)) (- a b 0))
    (let ((a 3) (b 2) (c 1.0)) (- a b 1))
    (let ((a 3) (b 2) (c 1.0)) (- a b -1))
    (let ((a 3) (b 2) (c 1.0)) (- a b 2))
    (let ((a 3) (b 2) (c 1.0)) (- 1 a b c))
    (let ((a 3) (b 2) (c 1.0)) (- a b c 0))
    (let ((a 3) (b 2) (c 1.0)) (- a b c 1))
    (let ((a 3) (b 2) (c 1.0)) (- a b c -1))

    (let ((a 3) (b 2) (c 1.0)) (*))
    (let ((a 3) (b 2) (c 1.0)) (* 2))
    (let ((a 3) (b 2) (c 1.0)) (* 2 0))
    (let ((a 3) (b 2) (c 1.0)) (* 2 0.0))
    (let ((a 3) (b 2) (c 1.0)) (* 2.0))
    (let ((a 3) (b 2) (c 1.0)) (* 2.0 0))
    (let ((a 3) (b 2) (c 1.0)) (* 2.0 0.0))
    (let ((a 3) (b 2) (c 1.0)) (* 0 2))
    (let ((a 3) (b 2) (c 1.0)) (* 0 2.0))
    (let ((a 3) (b 2) (c 1.0)) (* 0.0 2))
    (let ((a 3) (b 2) (c 1.0)) (* 0.0 2.0))
    (let ((a 3) (b 2) (c 1.0)) (* a))
    (let ((a 3) (b 2) (c 1.0)) (* a 0))
    (let ((a 3) (b 2) (c 1.0)) (* a 0.0))
    (let ((a 3) (b 2) (c 1.0)) (* 0 a))
    (let ((a 3) (b 2) (c 1.0)) (* 0.0 a))
    (let ((a 3) (b 2) (c 1.0)) (* c 0))
    (let ((a 3) (b 2) (c 1.0)) (* c 0.0))
    (let ((a 3) (b 2) (c 1.0)) (* 0 c))
    (let ((a 3) (b 2) (c 1.0)) (* 0.0 c))
    (let ((a 3) (b 2) (c 1.0)) (* a b 0 c 0))
    (let ((a 3) (b 2) (c 1.0)) (* 0 a))
    (let ((a 3) (b 2) (c 1.0)) (* 0 a b))
    (let ((a 3) (b 2) (c 1.0)) (* 0 a b c))
    (let ((a 3) (b 2) (c 1.0)) (* 1 2 3))
    (let ((a 3) (b 2) (c 1.0)) (* 3.0 2.0 1))
    (let ((a 3) (b 2) (c 1.0)) (* 3.0 2.0 1 4))
    (let ((a 3) (b 2) (c 1.0)) (* a 1))
    (let ((a 3) (b 2) (c 1.0)) (* a -1))
    (let ((a 3) (b 2) (c 1.0)) (* 1 a))
    (let ((a 3) (b 2) (c 1.0)) (* -1 a))
    (let ((a 3) (b 2) (c 1.0)) (* c 1))
    (let ((a 3) (b 2) (c 1.0)) (* c -1))
    (let ((a 3) (b 2) (c 1.0)) (* 1 c))
    (let ((a 3) (b 2) (c 1.0)) (* -1 c))
    (let ((a 3) (b 2) (c 1.0)) (* a b 0))
    (let ((a 3) (b 2) (c 1.0)) (* a b 1))
    (let ((a 3) (b 2) (c 1.0)) (* a b -1))
    (let ((a 3) (b 2) (c 1.0)) (* a b 2))
    (let ((a 3) (b 2) (c 1.0)) (* 1 a b c))
    (let ((a 3) (b 2) (c 1.0)) (* a b c 0))
    (let ((a 3) (b 2) (c 1.0)) (* a b c 1))
    (let ((a 3) (b 2) (c 1.0)) (* a b c -1))

    (let ((a 3) (b 2) (c 1.0)) (/))
    (let ((a 3) (b 2) (c 1.0)) (/ 2))
    (let ((a 3) (b 2) (c 1.0)) (/ 2 0))
    (let ((a 3) (b 2) (c 1.0)) (/ 2 0.0))
    (let ((a 3) (b 2) (c 1.0)) (/ 2.0))
    (let ((a 3) (b 2) (c 1.0)) (/ 2.0 0))
    (let ((a 3) (b 2) (c 1.0)) (/ 2.0 0.0))
    (let ((a 3) (b 2) (c 1.0)) (/ 0 2))
    (let ((a 3) (b 2) (c 1.0)) (/ 0 2.0))
    (let ((a 3) (b 2) (c 1.0)) (/ 0.0 2))
    (let ((a 3) (b 2) (c 1.0)) (/ 0.0 2.0))
    (let ((a 3) (b 2) (c 1.0)) (/ a))
    (let ((a 3) (b 2) (c 1.0)) (/ a 0))
    (let ((a 3) (b 2) (c 1.0)) (/ a 0.0))
    (let ((a 3) (b 2) (c 1.0)) (/ 0 a))
    (let ((a 3) (b 2) (c 1.0)) (/ 0.0 a))
    (let ((a 3) (b 2) (c 1.0)) (/ c 0))
    (let ((a 3) (b 2) (c 1.0)) (/ c 0.0))
    (let ((a 3) (b 2) (c 1.0)) (/ 0 c))
    (let ((a 3) (b 2) (c 1.0)) (/ 0.0 c))
    (let ((a 3) (b 2) (c 1.0)) (/ a b 0 c 0))
    (let ((a 3) (b 2) (c 1.0)) (/ 0 a))
    (let ((a 3) (b 2) (c 1.0)) (/ 0 a b))
    (let ((a 3) (b 2) (c 1.0)) (/ 0 a b c))
    (let ((a 3) (b 2) (c 1.0)) (/ 1 2 3))
    (let ((a 3) (b 2) (c 1.0)) (/ 3.0 2.0 1))
    (let ((a 3) (b 2) (c 1.0)) (/ 3.0 2.0 1 4))
    (let ((a 3) (b 2) (c 1.0)) (/ a 1))
    (let ((a 3) (b 2) (c 1.0)) (/ a -1))
    (let ((a 3) (b 2) (c 1.0)) (/ 1 a))
    (let ((a 3) (b 2) (c 1.0)) (/ -1 a))
    (let ((a 3) (b 2) (c 1.0)) (/ c 1))
    (let ((a 3) (b 2) (c 1.0)) (/ c -1))
    (let ((a 3) (b 2) (c 1.0)) (/ 1 c))
    (let ((a 3) (b 2) (c 1.0)) (/ -1 c))
    (let ((a 3) (b 2) (c 1.0)) (/ a b 0))
    (let ((a 3) (b 2) (c 1.0)) (/ a b 1))
    (let ((a 3) (b 2) (c 1.0)) (/ a b -1))
    (let ((a 3) (b 2) (c 1.0)) (/ a b 2))
    (let ((a 3) (b 2) (c 1.0)) (/ 1 a b c))
    (let ((a 3) (b 2) (c 1.0)) (/ a b c 0))
    (let ((a 3) (b 2) (c 1.0)) (/ a b c 1))
    (let ((a 3) (b 2) (c 1.0)) (/ a b c -1)))
  "List of expression for test.
Each element will be executed by interpreter and with
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bytecompiled code, and their results compared.")

(defun bytecomp-check-1 (pat)
  "Return non-nil if PAT is the same whether directly evalled or compiled."
  (let ((warning-minimum-log-level :emergency)
	(byte-compile-warnings nil)
	(v0 (condition-case nil
		(eval pat)
	      (error nil)))
	(v1 (condition-case nil
		(funcall (byte-compile (list 'lambda nil pat)))
	      (error nil))))
    (equal v0 v1)))
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(put 'bytecomp-check-1 'ert-explainer 'bytecomp-explain-1)
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(defun bytecomp-explain-1 (pat)
  (let ((v0 (condition-case nil
		(eval pat)
	      (error nil)))
	(v1 (condition-case nil
		(funcall (byte-compile (list 'lambda nil pat)))
	      (error nil))))
    (format "Expression `%s' gives `%s' if directly evalled, `%s' if compiled."
	    pat v0 v1)))
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(ert-deftest bytecomp-tests ()
  "Test the Emacs byte compiler."
  (dolist (pat byte-opt-testsuite-arith-data)
    (should (bytecomp-check-1 pat))))
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(defun test-byte-opt-arithmetic (&optional arg)
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  "Unit test for byte-opt arithmetic operations.
Subtests signal errors if something goes wrong."
  (interactive "P")
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  (switch-to-buffer (generate-new-buffer "*Font Pase Test*"))
  (let ((warning-minimum-log-level :emergency)
	(byte-compile-warnings nil)
	(pass-face '((t :foreground "green")))
	(fail-face '((t :foreground "red")))
	(print-escape-nonascii t)
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	(print-escape-newlines t)
	(print-quoted t)
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	v0 v1)
    (dolist (pat byte-opt-testsuite-arith-data)
      (condition-case nil
	  (setq v0 (eval pat))
	(error (setq v0 nil)))
      (condition-case nil
	  (setq v1 (funcall (byte-compile (list 'lambda nil pat))))
	(error (setq v1 nil)))
      (insert (format "%s" pat))
      (indent-to-column 65)
      (if (equal v0 v1)
	  (insert (propertize "OK" 'face pass-face))
	(insert (propertize "FAIL\n" 'face fail-face))
	(indent-to-column 55)
	(insert (propertize (format "[%s] vs [%s]" v0 v1)
			    'face fail-face)))
      (insert "\n"))))

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(defun test-byte-comp-compile-and-load (compile &rest forms)
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  (let ((elfile nil)
        (elcfile nil))
    (unwind-protect
         (progn
           (setf elfile (make-temp-file "test-bytecomp" nil ".el"))
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           (when compile
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             (setf elcfile (make-temp-file "test-bytecomp" nil ".elc")))
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           (with-temp-buffer
             (dolist (form forms)
               (print form (current-buffer)))
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             (write-region (point-min) (point-max) elfile nil 'silent))
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           (if compile
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               (let ((byte-compile-dest-file-function
                      (lambda (e) elcfile)))
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                 (byte-compile-file elfile t))
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             (load elfile nil 'nomessage)))
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      (when elfile (delete-file elfile))
      (when elcfile (delete-file elcfile)))))
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(put 'test-byte-comp-compile-and-load 'lisp-indent-function 1)
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(ert-deftest test-byte-comp-macro-expansion ()
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  (test-byte-comp-compile-and-load t
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    '(progn (defmacro abc (arg) 1) (defun def () (abc 2))))
  (should (equal (funcall 'def) 1)))

(ert-deftest test-byte-comp-macro-expansion-eval-and-compile ()
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  (test-byte-comp-compile-and-load t
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    '(eval-and-compile (defmacro abc (arg) -1) (defun def () (abc 2))))
  (should (equal (funcall 'def) -1)))

(ert-deftest test-byte-comp-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)
  ;; in the same way.
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  (test-byte-comp-compile-and-load t
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    '(eval-when-compile
      (defmacro abc (arg) -10)
      (defun abc-1 () (abc 2)))
    '(defmacro abc-2 () (abc-1))
    '(defun def () (abc-2)))
  (should (equal (funcall 'def) -10)))

(ert-deftest test-byte-comp-macro-expand-lexical-override ()
  ;; Intuitively, one might expect the defmacro to override the
  ;; macrolet since macrolet's is explicitly called out as being
  ;; equivalent to toplevel, but CLISP and SBCL both evaluate the form
  ;; this way, so we should too.
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  (test-byte-comp-compile-and-load t
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    '(require 'cl-lib)
    '(cl-macrolet ((m () 4))
      (defmacro m () 5)
      (defun def () (m))))
  (should (equal (funcall 'def) 4)))
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(ert-deftest bytecomp-tests--warnings ()
  (with-current-buffer (get-buffer-create "*Compile-Log*")
    (let ((inhibit-read-only t)) (erase-buffer)))
  (test-byte-comp-compile-and-load t
    '(progn
       (defun my-test0 ()
         (my--test11 3)
         (my--test12 3)
         (my--test2 5))
       (defmacro my--test11 (arg) (+ arg 1))
       (eval-and-compile
         (defmacro my--test12 (arg) (+ arg 1))
         (defun my--test2 (arg) (+ arg 1)))))
  (with-current-buffer (get-buffer-create "*Compile-Log*")
    (goto-char (point-min))
    ;; Should warn that mt--test1[12] are first used as functions.
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    ;; The second alternative is for when the file name is so long
    ;; that pretty-printing starts the message on the next line.
    (should (or (re-search-forward "my--test11:\n.*macro" nil t)
                (re-search-forward "my--test11:\n.*:\n.*macro" nil t)))
    (should (or (re-search-forward "my--test12:\n.*macro" nil t)
                (re-search-forward "my--test12:\n.*:\n.*macro" nil t)))
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    (goto-char (point-min))
    ;; Should not warn that mt--test2 is not known to be defined.
    (should-not (re-search-forward "my--test2" nil t))))

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(ert-deftest test-eager-load-macro-expansion ()
  (test-byte-comp-compile-and-load nil
    '(progn (defmacro abc (arg) 1) (defun def () (abc 2))))
  (should (equal (funcall 'def) 1)))

(ert-deftest test-eager-load-macro-expansion-eval-and-compile ()
  (test-byte-comp-compile-and-load nil
    '(eval-and-compile (defmacro abc (arg) -1) (defun def () (abc 2))))
  (should (equal (funcall 'def) -1)))

(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)
  ;; in the same way.
  (test-byte-comp-compile-and-load nil
    '(eval-when-compile
      (defmacro abc (arg) -10)
      (defun abc-1 () (abc 2)))
    '(defmacro abc-2 () (abc-1))
    '(defun def () (abc-2)))
  (should (equal (funcall 'def) -10)))

(ert-deftest test-eager-load-macro-expand-lexical-override ()
  ;; Intuitively, one might expect the defmacro to override the
  ;; macrolet since macrolet's is explicitly called out as being
  ;; equivalent to toplevel, but CLISP and SBCL both evaluate the form
  ;; this way, so we should too.
  (test-byte-comp-compile-and-load nil
    '(require 'cl-lib)
    '(cl-macrolet ((m () 4))
      (defmacro m () 5)
      (defun def () (m))))
  (should (equal (funcall 'def) 4)))


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;; Local Variables:
;; no-byte-compile: t
;; End:
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(provide 'byte-opt-testsuite)
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