;;; editfns-tests.el --- tests for editfns.c -*- lexical-binding:t -*-
;; Copyright (C) 2016-2026 Free Software Foundation, Inc.
;; 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 .
;;; Code:
(require 'ert)
(ert-deftest format-properties ()
;; Bug #23730
(should (equal-including-properties
(format (propertize "%d" 'face '(:background "red")) 1)
#("1" 0 1 (face (:background "red")))))
(should (equal-including-properties
(format (propertize "%2d" 'face '(:background "red")) 1)
#(" 1" 0 2 (face (:background "red")))))
(should (equal-including-properties
(format (propertize "%02d" 'face '(:background "red")) 1)
#("01" 0 2 (face (:background "red")))))
(should (equal-including-properties
(format (concat (propertize "%2d" 'x 'X)
(propertize "a" 'a 'A)
(propertize "b" 'b 'B))
1)
#(" 1ab" 0 2 (x X) 2 3 (a A) 3 4 (b B))))
;; Bug #5306
(should (equal-including-properties
(format "%.10s"
(concat "1234567890aaaa"
(propertize "12345678901234567890" 'xxx 25)))
"1234567890"))
(should (equal-including-properties
(format "%.10s"
(concat "123456789"
(propertize "12345678901234567890" 'xxx 25)))
#("1234567891" 9 10 (xxx 25))))
;; Bug #23859
(should (equal-including-properties
(format "%4s" (propertize "hi" 'face 'bold))
#(" hi" 2 4 (face bold))))
;; Bug #23897
(should (equal-including-properties
(format "%s" (concat (propertize "01234" 'face 'bold) "56789"))
#("0123456789" 0 5 (face bold))))
(should (equal-including-properties
(format "%s" (concat (propertize "01" 'face 'bold)
(propertize "23" 'face 'underline)
"45"))
#("012345" 0 2 (face bold) 2 4 (face underline))))
;; The last property range is extended to include padding on the
;; right, but the first range is not extended to the left to include
;; padding on the left!
(should (equal-including-properties
(format "%12s" (concat (propertize "01234" 'face 'bold) "56789"))
#(" 0123456789" 2 7 (face bold))))
(should (equal-including-properties
(format "%-12s" (concat (propertize "01234" 'face 'bold) "56789"))
#("0123456789 " 0 5 (face bold))))
(should (equal-including-properties
(format "%10s" (concat (propertize "01" 'face 'bold)
(propertize "23" 'face 'underline)
"45"))
#(" 012345" 4 6 (face bold) 6 8 (face underline))))
(should (equal-including-properties
(format "%-10s" (concat (propertize "01" 'face 'bold)
(propertize "23" 'face 'underline)
"45"))
#("012345 " 0 2 (face bold) 2 4 (face underline))))
(should (equal-including-properties
(format "%-10s" (concat (propertize "01" 'face 'bold)
(propertize "23" 'face 'underline)
(propertize "45" 'face 'italic)))
#("012345 "
0 2 (face bold) 2 4 (face underline) 4 10 (face italic))))
;; Bug #38191
(should (equal-including-properties
(format (propertize "‘foo’ %s bar" 'face 'bold) "xxx")
#("‘foo’ xxx bar" 0 13 (face bold))))
;; Bug #32404
(should (equal-including-properties
(format (concat (propertize "%s" 'face 'bold)
""
(propertize "%s" 'face 'error))
"foo" "bar")
#("foobar" 0 3 (face bold) 3 6 (face error))))
(should (equal-including-properties
(format (concat "%s" (propertize "%s" 'face 'error)) "foo" "bar")
#("foobar" 3 6 (face error))))
(should (equal-including-properties
(format (concat "%s " (propertize "%s" 'face 'error)) "foo" "bar")
#("foo bar" 4 7 (face error))))
;; Bug #46317
(let ((s (propertize "X" 'prop "val")))
(should (equal-including-properties
(format (concat "%3s/" s) 12)
#(" 12/X" 4 5 (prop "val"))))
(should (equal-including-properties
(format (concat "%3S/" s) 12)
#(" 12/X" 4 5 (prop "val"))))
(should (equal-including-properties
(format (concat "%3d/" s) 12)
#(" 12/X" 4 5 (prop "val"))))
(should (equal-including-properties
(format (concat "%-3s/" s) 12)
#("12 /X" 4 5 (prop "val"))))
(should (equal-including-properties
(format (concat "%-3S/" s) 12)
#("12 /X" 4 5 (prop "val"))))
(should (equal-including-properties
(format (concat "%-3d/" s) 12)
#("12 /X" 4 5 (prop "val"))))))
(ert-deftest propertize/error-even-number-of-args ()
"Number of args for `propertize' must be odd."
(should-error (propertize "foo" 'bar) :type 'wrong-number-of-arguments))
;; Tests for bug#5131.
(defun transpose-test-reverse-word (start end)
"Reverse characters in a word by transposing pairs of characters."
(let ((begm (make-marker))
(endm (make-marker)))
(set-marker begm start)
(set-marker endm end)
(while (> endm begm)
(progn (transpose-regions begm (1+ begm) endm (1+ endm) t)
(set-marker begm (1+ begm))
(set-marker endm (1- endm))))))
(defun transpose-test-get-byte-positions (len)
"Validate character position to byte position translation."
(let ((bytes '()))
(dotimes (pos len)
(push (position-bytes (1+ pos)) bytes))
(nreverse bytes)))
(ert-deftest transpose-ascii-regions-test ()
(with-temp-buffer
(erase-buffer)
(insert "abcd")
(transpose-test-reverse-word 1 4)
(should (string= (buffer-string) "dcba"))
(should (equal (transpose-test-get-byte-positions 5) '(1 2 3 4 5)))))
(ert-deftest transpose-nonascii-regions-test-1 ()
(with-temp-buffer
(erase-buffer)
(insert "÷bcd")
(transpose-test-reverse-word 1 4)
(should (string= (buffer-string) "dcb÷"))
(should (equal (transpose-test-get-byte-positions 5) '(1 2 3 4 6)))))
(ert-deftest transpose-nonascii-regions-test-2 ()
(with-temp-buffer
(erase-buffer)
(insert "÷ab\"äé")
(transpose-test-reverse-word 1 6)
(should (string= (buffer-string) "éä\"ba÷"))
(should (equal (transpose-test-get-byte-positions 7) '(1 3 5 6 7 8 10)))))
(ert-deftest editfns-tests--transpose-equal-but-not ()
(with-temp-buffer
(let ((str1 (propertize "ab" 'my-prop 'ab))
(str2 (propertize "SPC" 'my-prop 'SPC))
(str3 (propertize "é" 'my-prop 'é)))
(insert " " str1 str2 str3 " ")
(transpose-regions (+ (point-min) 1) (+ (point-min) 3)
(+ (point-min) 6) (+ (point-min) 7))
(should (equal-including-properties
str3 (buffer-substring (+ (point-min) 1) (+ (point-min) 2))))
(should (equal-including-properties
str2 (buffer-substring (+ (point-min) 2) (+ (point-min) 5))))
(should (equal-including-properties
str1 (buffer-substring (+ (point-min) 5) (+ (point-min) 7)))))))
(defconst editfns-tests--transpose-regions-tests
'(;; adjacent regions with one being empty
("" "foo" "" "" "" [0 3 0 0 0])
("" "" "" "baz" "" [0 0 0 3 0])
;; For the following tests, assume that characters from the range
;; [a-z] are 1 byte long in Emacs's internal text representation,
;; while LATIN SMALL LETTER [AO] WITH DIAERESIS is 2 bytes long.
;; (len1 == len2) && (end1 == start2) && (len1_byte == len2_byte)
("" "fo(o" "" "b)az" "" [0 3 0 3 0])
;; (len1 == len2) && (end1 != start2) && (len1_byte == len2_byte)
("" "fo(o" "[bar]" "b)az" "" [0 3 3 3 0])
;; (len1 != len2) && (end1 != start2) && (len1_byte < len2_byte)
("" "fo(o" "[bar]" "baaz)" "" [0 3 3 4 0])
;; (len1 != len2) && (end1 != start2) && (len1_byte > len2_byte)
("" "(fooo" "[bar]" "baz)" "" [0 4 3 3 0])
;; (len1 == len2) && (end1 == start2) && (len1_byte < len2_byte)
("" "fo(o" "" "b)äz" "" [0 3 0 4 0])
;; (len1 == len2) && (end1 == start2) && (len1_byte > len2_byte)
("" "fo(ö" "" "b)az" "" [0 4 0 3 0])
;; (len1 == len2) && (end1 != start2) && (len1_byte > len2_byte)
("" "fo(o" "[bar]" "b)äz" "" [0 3 3 4 0])
;; (len1 == len2) && (end1 != start2) && (len1_byte > len2_byte)
("" "fo(ö" "[bar]" "b)az" "" [0 4 3 3 0])
;; (len1 != len2) && (end1 == start2) && (len1_byte == len2_byte)
("" "fo(ö" "" "baaz)" "" [0 4 0 4 0])
;; (len1 != len2) && (end1 == start2) && (len1_byte == len2_byte)
("" "(fooo" "" "bäz)" "" [0 4 0 4 0])
;; (len1 != len2) && (end1 != start2) && (len1_byte == len2_byte)
("" "fo(ö" "[bar]" "baaz)" "" [0 4 3 4 0])
;; (len1 != len2) && (end1 != start2) && (len1_byte == len2_byte)
("" "(fooo" "[bar]" "bäz)" "" [0 4 3 4 0])
;; Going entirely non-ASCII. Assume plain greek small letters are
;; two bytes long in Emacs's internal text representation, GREEK
;; SMALL LETTER ALPHA WITH PSILI is three bytes long.
;; To cover the initial patch from bug#70122, define a test
;; consisting of three three-letter strings REG1 MID REG2, with
;; (length REG1) == (length REG2) but (byte-length REG1) !=
;; (byte-length REG2) ...
("ἀ(ρχή" "φ[ωω" "β){αρ" "β<ἀ]ζ}" "τέλ>ος" [9 6 6 7 10])
;; ... and a test with (length REG1) == (length REG2) and
;; (byte-length REG1) == (byte-length REG2).
("ἀ(ρχή" "φ[ωω" "β){αρ" "β<α]ζ}" "τέλ>ος" [9 6 6 6 10])
;; Define the moral equivalent of
;; `editfns-tests--transpose-equal-but-not'.
(" " "(ab)" "[SPC]" "{é}" " " [1 2 3 2 1])
;; Likewise, for the testcase from bug#70122 in
;; https://debbugs.gnu.org/cgi/bugreport.cgi?bug=70122#5.
("" "" "(a):\n[b]: \x2113\x2080\n" "{v}: scaling" "" [0 0 13 10 0])
;; Likewise, for the testcase from bug#70122 in
;; https://debbugs.gnu.org/cgi/bugreport.cgi?bug=70122#52.
("(Query replace (default abc → d): )" "abc" "[ → ]" "d" "" [35 3 5 1 0]))
"List of test strings and their markup to test `transpose-regions'.
Each element of this list should be a list
HEAD REG1 MID REG2 TAIL BYTE-LENGTHS
where the first five elements are (possibly empty) string snippets and
the sixth element is a five-element vector providing the lengths of the
string snippets, counted in bytes in Emacs's internal text
representation.
Test `editfns-tests--transpose-regions' inserts the five snippets into
its temporary buffer, adds text properties to them as described for
variable `editfns-tests--transpose-regions-markups', transposes REG1 and
REG2, probably undoes the change, and at each stage ensures that all
involved entities look as expected.")
(defconst editfns-tests--transpose-regions-markups
'("()" "[]" "{}" "<>")
"List of two-characters strings \"BE\" describing text property markup.
For each element in this list, test `editfns-tests--transpose-regions'
searches once for regular expression \"B.+E\" in its temporary buffer,
adds a text property `markup' with value \"BE\" to the matching text,
and then removes the markup characters B and E around the matching text.
The test searches in the buffer with all test snippets already inserted,
so characters B and E can originate from different snippets, and the
various B's and E's of different markup items do not need to nest.")
(ert-deftest editfns-tests--transpose-regions ()
"Test function `transpose-regions'.
Execute tests as described by `editfns-tests--transpose-regions-tests'."
(dolist (test editfns-tests--transpose-regions-tests)
(dolist (leave-markers '(nil t))
(message "test: %S leave-markers: %S" test leave-markers)
(with-temp-buffer
(let ((test (take 5 test))
(blengthv (nth 5 test))
(smarkers nil) ; Separator markers.
(pmarkers nil) ; Property markers.
(pmpos nil) ; Their positions before transposing.
(strings nil) ; Net text snippets, propertized.
(blengths nil) ; Their lengths in bytes.
(tstrings nil) ; Net text snippets with REG1/2 transposed.
(test-undo nil)
p beg end beg2 end2)
(buffer-enable-undo)
;; Insert text snippets. While doing so, create the separator
;; markers which we need later to determine the net text
;; snippets.
(cl-assert (eq (length test) 5))
(setq p test)
(while (cdr p)
(insert (car p))
(push (point-marker) smarkers)
(setq p (cdr p)))
(insert (car p))
(setq smarkers (nreverse smarkers))
;; Propertize them according to markup, remove markup
;; characters, add property markers.
(dolist (markup editfns-tests--transpose-regions-markups)
(cl-assert (eq (length markup) 2))
(goto-char (point-min))
(when (search-forward-regexp
(concat "\\("
(regexp-quote (substring markup 0 1))
".+"
(regexp-quote (substring markup 1 2))
"\\)")
nil t)
(setq beg (copy-marker (match-beginning 1))
end (copy-marker (match-end 1)))
(delete-region beg (1+ beg))
(delete-region (1- end) end)
(add-text-properties beg end (list 'markup markup))
(push beg pmarkers)
(push end pmarkers)))
(setq pmarkers (sort pmarkers)
pmpos (mapcar #'marker-position pmarkers))
;; Determine net text snippets, plain and with transposed REG1
;; and REG2. Determine the byte lengths of the net text
;; snippets and ensure they meet our expectation.
(setq p smarkers
beg (point-min))
(while p
(push (buffer-substring beg (car p)) strings)
(push (- (position-bytes (car p)) (position-bytes beg))
blengths)
(setq beg (car p) p (cdr p)))
(push (buffer-substring beg (point-max)) strings)
(push (- (position-bytes (point-max)) (position-bytes beg))
blengths)
(setq strings (nreverse strings)
blengths (nreverse blengths))
(setq tstrings (list (nth 0 strings) (nth 3 strings)
(nth 2 strings) (nth 1 strings)
(nth 4 strings)))
(should (equal blengthv (apply #'vector blengths)))
;; Transpose REG1 and REG2. Some transpositions might not
;; generate undo, keep track of that in flag `test-undo'.
(setq beg (+ 1 (length (nth 0 strings)))
end (+ beg (length (nth 1 strings)))
beg2 (+ end (length (nth 2 strings)))
end2 (+ beg2 (length (nth 3 strings))))
(undo-boundary)
(transpose-regions beg end beg2 end2 leave-markers)
(when (car buffer-undo-list)
(setq test-undo t))
(undo-boundary)
;; Check resulting buffer text and its properties.
(should (equal-including-properties
(buffer-string)
(mapconcat #'identity tstrings)))
;; Check property marker positions.
(if leave-markers
(should (equal (mapcar #'marker-position pmarkers) pmpos))
;; Meh. This more or less blindly duplicates function
;; transpose_markers, since I have been too lazy to
;; reproduce the arithmetic myself.
(setq pmpos
(mapcar
(lambda (pos)
(cond
((< pos beg) pos)
((>= pos end2) pos)
((< pos end) (+ pos (+ (- end2 beg2) (- beg2 end))))
((< pos beg2) (+ pos (- (- end2 beg2) (- end beg))))
(t (- pos (+ (- end beg) (- beg2 end))))))
pmpos))
(should (equal (mapcar #'marker-position pmarkers) pmpos)))
;; Undo the transposition and check text and properties again,
;; if needed. This does not undo any marker transpositions as
;; per the comment before the call to transpose_markers in
;; Ftranspose_regions, so nothing to check on the marker side
;; after the undo.
(when test-undo
(undo)
(should (equal-including-properties
(buffer-string)
(mapconcat #'identity strings))))
;; Be nice and clean up markers.
(dolist (marker smarkers) (set-marker marker nil))
(dolist (marker pmarkers) (set-marker marker nil)))))))
(ert-deftest format-c-float ()
(should-error (format "%c" 0.5)))
(ert-deftest format-binary-zero ()
"Check that `%#b' and `%#B' are simplified for zero values."
(should (string-equal (format "%#b" 0) "0"))
(should (string-equal (format "%#B" 0) "0")))
(ert-deftest format-binary-floats ()
"Check that `%b' and `%B' drop the fractional part of floats."
(let* ((n 5) (N 10)
(fracs (mapcar #'(lambda (d) (/ d N 1.0)) (number-sequence 0 (1- N)))))
(dolist (f fracs)
(should (string-equal (format "%b" (+ n f)) (format "%b" n)))
(should (string-equal (format "%B" (+ n f)) (format "%B" n))))))
(ert-deftest format-binary-nonzero-integers ()
"Check `%b' and `%B' for non-zero integers.
For numbers of both signs, check each flag (`0' padding, signs `+' &
space, left alignment `-') with and without the alternative display
format `#'. Include both fixed and big numbers. The widths are chosen
sufficiently large to avoid truncation."
(dolist (nbits `((#x-5A . "1011010")
(#x5A . "1011010")
(#x-E97 . "111010010111")
(#xE97 . "111010010111")
(#xFFFFFFFFFFFFFFFFF . ,(make-string 68 ?1))
(#x-FFFFFFFFFFFFFFFFF . ,(make-string 68 ?1))))
(let* ((n (car nbits)) (bits (cdr nbits))
(extra (+ 1 2 2)) ; 1 (sign) + 2 (0b prefix) + 2 (pad)
(w (+ (length bits) extra))
(Npad (- extra (if (< n 0) 1 0))) ; 0 & space padding w/ prefix
(Nsgn (- extra 1)) ; padding w/o sign
(sgn- (if (< n 0) "-" "")) (sgn (if (< n 0) "-" "+"))
(0pad (make-string Npad ?0)) (0padalt (make-string (- Npad 2) ?0))
(spad (make-string Npad ? )) (spadalt (make-string (- Npad 2) ? ))
(+pad (make-string Nsgn ? )) (+padalt (make-string (- Nsgn 2) ? )))
;; %b
(should (string-equal (format "%b" n) (concat sgn- bits)))
(should (string-equal (format "%B" n) (concat sgn- bits)))
(should (string-equal (format "%#b" n) (concat sgn- "0b" bits)))
(should (string-equal (format "%#B" n) (concat sgn- "0B" bits)))
;; %0wb
(should (string-equal (format (format "%%0%db" w) n)
(concat sgn- 0pad bits)))
(should (string-equal (format (format "%%0%dB" w) n)
(concat sgn- 0pad bits)))
(should (string-equal (format (format "%%#0%db" w) n)
(concat sgn- "0b" 0padalt bits)))
(should (string-equal (format (format "%%#0%dB" w) n)
(concat sgn- "0B" 0padalt bits)))
;; %-wb
(should (string-equal (format (format "%%-%db" w) n)
(concat sgn- bits spad)))
(should (string-equal (format (format "%%-%dB" w) n)
(concat sgn- bits spad)))
(should (string-equal (format (format "%%#-%db" w) n)
(concat sgn- "0b" bits spadalt)))
(should (string-equal (format (format "%%#-%dB" w) n)
(concat sgn- "0B" bits spadalt)))
;; %+wb
(should (string-equal (format (format "%%+%db" w) n)
(concat +pad sgn bits)))
(should (string-equal (format (format "%%+%dB" w) n)
(concat +pad sgn bits)))
(should (string-equal (format (format "%%#+%db" w) n)
(concat +padalt sgn "0b" bits)))
(should (string-equal (format (format "%%#+%dB" w) n)
(concat +padalt sgn "0B" bits)))
;; % wb
(should (string-equal (format (format "%% %db" w) n)
(concat spad sgn- bits)))
(should (string-equal (format (format "%% %dB" w) n)
(concat spad sgn- bits)))
(should (string-equal (format (format "%%# %db" w) n)
(concat spadalt sgn- "0b" bits)))
(should (string-equal (format (format "%%# %dB" w) n)
(concat spadalt sgn- "0B" bits))))))
;;; Test for Bug#29609.
(ert-deftest format-sharp-0-x ()
(should (string-equal (format "%#08x" #x10) "0x000010"))
(should (string-equal (format "%#05X" #x10) "0X010"))
(should (string-equal (format "%#04x" 0) "0000")))
;;; Tests for Bug#30408.
(ert-deftest format-%d-large-float ()
(should (string-equal (format "%d" 18446744073709551616.0)
"18446744073709551616"))
(should (string-equal (format "%d" -18446744073709551616.0)
"-18446744073709551616")))
(ert-deftest format-%x-large-float ()
(should (string-equal (format "%x" 18446744073709551616.0)
"10000000000000000")))
(ert-deftest read-large-integer ()
(should (eq (type-of (read (format "%d0" most-negative-fixnum))) 'integer))
(should (eq (type-of (read (format "%+d" (* -8.0 most-negative-fixnum))))
'integer))
(should (eq (type-of (read (substring (format "%d" most-negative-fixnum) 1)))
'integer))
(should (eq (type-of (read (format "#b%b" most-negative-fixnum)))
'integer))
(should (eq (type-of (read (format "#o%o" most-negative-fixnum)))
'integer))
(should (eq (type-of (read (format "#x%x" most-negative-fixnum)))
'integer))
(should (eq (type-of (read (format "#32rG%x" most-positive-fixnum)))
'integer))
(dolist (fmt '("%d" "%s" "#b%b" "#o%o" "#x%x"))
(dolist (val (list most-negative-fixnum (1+ most-negative-fixnum)
-1 0 1
(1- most-positive-fixnum) most-positive-fixnum))
(should (eq val (read (format fmt val)))))
(dolist (val (list (1+ most-positive-fixnum)
(* 2 (1+ most-positive-fixnum))
(* 4 (1+ most-positive-fixnum))
(* 8 (1+ most-positive-fixnum))
18446744073709551616.0))
(should (= val (read (format fmt val)))))))
(ert-deftest format-%o-negative-float ()
(should (string-equal (format "%o" -1e-37) "0")))
;; Bug#31938
(ert-deftest format-%d-float ()
(should (string-equal (format "%d" -1.1) "-1"))
(should (string-equal (format "%d" -0.9) "0"))
(should (string-equal (format "%d" -0.0) "0"))
(should (string-equal (format "%d" 0.0) "0"))
(should (string-equal (format "%d" 0.9) "0"))
(should (string-equal (format "%d" 1.1) "1")))
(ert-deftest format-with-field ()
(should (equal (format "First argument %2$s, then %3$s, then %1$s" 1 2 3)
"First argument 2, then 3, then 1"))
(should (equal (format "a %2$s %3$d %1$d %2$S %3$d %4$d b" 11 "22" 33 44)
"a 22 33 11 \"22\" 33 44 b"))
(should (equal (format "a %08$s %0000000000000000009$s b" 1 2 3 4 5 6 7 8 9)
"a 8 9 b"))
(should (equal (should-error (format "a %999999$s b" 11))
'(error "Not enough arguments for format string")))
(should (equal (should-error (format "a %2147483647$s b"))
'(error "Not enough arguments for format string")))
(should (equal (should-error (format "a %9223372036854775807$s b"))
'(error "Not enough arguments for format string")))
(should (equal (should-error (format "a %9223372036854775808$s b"))
'(error "Not enough arguments for format string")))
(should (equal (should-error (format "a %18446744073709551615$s b"))
'(error "Not enough arguments for format string")))
(should (equal (should-error (format "a %18446744073709551616$s b"))
'(error "Not enough arguments for format string")))
(should (equal (should-error
(format (format "a %%%d$d b" most-positive-fixnum)))
'(error "Not enough arguments for format string")))
(should (equal (should-error
(format (format "a %%%d$d b" (+ 1.0 most-positive-fixnum))))
'(error "Not enough arguments for format string")))
(should (equal (should-error (format "a %$s b" 11))
'(error "Invalid format operation %$")))
(should (equal (should-error (format "a %-1$s b" 11))
'(error "Invalid format operation %$")))
(should (equal (format "%1$c %1$s" ?±) "± 177")))
(ert-deftest replace-buffer-contents-1 ()
(with-temp-buffer
(insert #("source " 2 4 (prop 7)))
(let ((source (current-buffer)))
(with-temp-buffer
(insert "before dest after")
(let ((marker (set-marker (make-marker) 14)))
(save-restriction
(narrow-to-region 8 13)
(goto-char 12)
(should (looking-at " \\'"))
(replace-region-contents (point-min) (point-max) source)
(should (looking-at " \\'")))
(should (equal (marker-buffer marker) (current-buffer)))
(should (equal (marker-position marker) 16)))
(should (equal-including-properties
(buffer-string)
#("before source after" 9 11 (prop 7))))))
(should (equal-including-properties
(buffer-string)
#("source " 2 4 (prop 7))))))
(ert-deftest replace-buffer-contents-2 ()
(with-temp-buffer
(insert "foo bar baz qux")
(let ((source (current-buffer)))
(with-temp-buffer
(insert "foo BAR baz qux")
(replace-region-contents (point-min) (point-max) source)
(should (equal-including-properties
(buffer-string)
"foo bar baz qux"))))))
(ert-deftest replace-buffer-contents-bug31837 ()
(switch-to-buffer "a")
(insert-char (char-from-name "SMILE"))
(insert "1234")
(switch-to-buffer "b")
(insert-char (char-from-name "SMILE"))
(insert "5678")
(replace-region-contents (point-min) (point-max) (get-buffer "a"))
(should (equal (buffer-substring-no-properties (point-min) (point-max))
(concat (string (char-from-name "SMILE")) "1234"))))
(ert-deftest editfns-tests--replace-region ()
;; :expected-result :failed
(with-temp-buffer
(let ((tmpbuf (current-buffer)))
(insert " be ")
(narrow-to-region (+ (point-min) 2) (- (point-max) 2))
(dolist (args `((,tmpbuf)
(,(vector tmpbuf (point-min) (point-max)))
(,"be")
(,(vector tmpbuf (point-min) (point-max)) 0)
(,"be" 0)))
(with-temp-buffer
(insert "here is some text")
(let ((m5n (copy-marker (+ (point-min) 5)))
(m5a (copy-marker (+ (point-min) 5) t))
(m6n (copy-marker (+ (point-min) 6)))
(m6a (copy-marker (+ (point-min) 6) t))
(m7n (copy-marker (+ (point-min) 7)))
(m7a (copy-marker (+ (point-min) 7) t)))
(apply #'replace-region-contents
(+ (point-min) 5) (+ (point-min) 7) args)
(should (equal (buffer-string) "here be some text"))
(should (equal (point) (point-max)))
;; Markers before the replaced text stay before.
(should (= m5n (+ (point-min) 5)))
(should (= m5a (+ (point-min) 5)))
;; Markers in the replaced text can end up at either end, depending
;; on whether they're advance-after-insert or not.
(should (= m6n (+ (point-min) 5)))
(should (<= (+ (point-min) 5) m6a (+ (point-min) 7)))
;; Markers after the replaced text stay after.
(should (= m7n (+ (point-min) 7)))
(should (= m7a (+ (point-min) 7)))))
(widen)))))
(ert-deftest editfns-tests--insert-via-replace ()
(with-temp-buffer
(insert "bar")
(goto-char (point-min))
;; Check that markers insertion type is respected when an insertion
;; happens via a "replace" operation.
(let ((m1 (copy-marker (point) nil))
(m2 (copy-marker (point) t)))
(looking-at "\\(\\)")
(replace-match "foo")
(should (equal "foobar" (buffer-string)))
(should (= (point-min) m1))
(should (= (+ (point-min) 3) m2)))))
(ert-deftest delete-region-undo-markers-1 ()
"Make sure we don't end up with freed markers reachable from Lisp."
;; https://debbugs.gnu.org/cgi/bugreport.cgi?bug=30931#40
(with-temp-buffer
(insert "1234567890")
(setq buffer-undo-list nil)
(narrow-to-region 2 5)
;; `save-restriction' in a narrowed buffer creates two markers
;; representing the current restriction.
(save-restriction
(widen)
;; Any markers *within* the deleted region are put onto the undo
;; list.
(delete-region 1 6))
;; (princ (format "%S" buffer-undo-list) #'external-debugging-output)
;; `buffer-undo-list' is now
;; (("12345" . 1) (# . -1) (# . 1))
;;
;; If temp-marker1 or temp-marker2 are freed prematurely, calling
;; `type-of' on them will cause Emacs to abort. Calling
;; `garbage-collect' will also abort if it finds any reachable
;; freed objects.
(should (eq (type-of (car (nth 1 buffer-undo-list))) 'marker))
(should (eq (type-of (car (nth 2 buffer-undo-list))) 'marker))
(garbage-collect)))
(ert-deftest delete-region-undo-markers-2 ()
"Make sure we don't end up with freed markers reachable from Lisp."
;; https://debbugs.gnu.org/cgi/bugreport.cgi?bug=30931#55
(with-temp-buffer
(insert "1234567890")
(setq buffer-undo-list nil)
;; signal_before_change creates markers delimiting a change
;; region.
(let ((before-change-functions
(list (lambda (beg end)
(delete-region (1- beg) (1+ end))))))
(delete-region 2 5))
;; (princ (format "%S" buffer-undo-list) #'external-debugging-output)
;; `buffer-undo-list' is now
;; (("678" . 1) ("12345" . 1) (# . -1)
;; (# . -1) (# . -4))
;;
;; If temp-marker1 or temp-marker2 are freed prematurely, calling
;; `type-of' on them will cause Emacs to abort. Calling
;; `garbage-collect' will also abort if it finds any reachable
;; freed objects.
(should (eq (type-of (car (nth 3 buffer-undo-list))) 'marker))
(should (eq (type-of (car (nth 4 buffer-undo-list))) 'marker))
(garbage-collect)))
(ert-deftest format-bignum ()
(let* ((s1 "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF")
(v1 (read (concat "#x" s1)))
(s2 "99999999999999999999999999999999")
(v2 (read s2))
(v3 #x-3ffffffffffffffe000000000000000))
(should (> v1 most-positive-fixnum))
(should (equal (format "%X" v1) s1))
(should (> v2 most-positive-fixnum))
(should (equal (format "%d" v2) s2))
(should (equal (format "%d" v3) "-5316911983139663489309385231907684352"))
(should (equal (format "%+d" v3) "-5316911983139663489309385231907684352"))
(should (equal (format "%+d" (- v3))
"+5316911983139663489309385231907684352"))
(should (equal (format "% d" (- v3))
" 5316911983139663489309385231907684352"))
(should (equal (format "%o" v3)
"-37777777777777777777600000000000000000000"))
(should (equal (format "%#50.40x" v3)
" -0x000000003ffffffffffffffe000000000000000"))
(should (equal (format "%-#50.40x" v3)
"-0x000000003ffffffffffffffe000000000000000 "))))
(ert-deftest test-group-name ()
(let ((group-name (group-name (group-gid))))
;; If the GID has no associated entry in /etc/group there's no
;; name for it and `group-name' should return nil!
(should (or (null group-name) (stringp group-name))))
(should-error (group-name 'foo))
(cond
((memq system-type '(windows-nt ms-dos))
(should-not (group-name 123456789)))
((executable-find "getent")
(with-temp-buffer
(let (stat name)
(dolist (gid (list 0 1212345 (group-gid)))
(erase-buffer)
(setq stat (ignore-errors
(call-process "getent" nil '(t nil) nil "group"
(number-to-string gid))))
(setq name (group-name gid))
(goto-char (point-min))
(cond ((eq stat 0)
(if (looking-at "\\([[:alnum:]_-]+\\):")
(should (string= (match-string 1) name))))
((eq stat 2)
(should-not name)))))))))
(ert-deftest test-translate-region-internal ()
(with-temp-buffer
(let ((max-char #16r3FFFFF)
(tt (make-char-table 'translation-table)))
(aset tt max-char ?*)
(insert max-char)
(translate-region-internal (point-min) (point-max) tt)
(should (string-equal (buffer-string) "*")))))
(ert-deftest find-fields ()
(with-temp-buffer
(insert "foo" (propertize "bar" 'field 'bar) "zot")
(goto-char (point-min))
(should (= (field-beginning) (point-min)))
(should (= (field-end) 4))
(goto-char 5)
(should (= (field-beginning) 4))
(should (= (field-end) 7))
(goto-char 8)
(should (= (field-beginning) 7))
(should (= (field-end) (point-max)))))
;;; Try and catch `*-changes-functions' bugs!
(defvar sanity-check-change-functions-verbose nil)
(defvar sanity-check-change-functions-op nil)
(defmacro sanity-check-change-functions-with-op (op &rest body)
(declare (debug t) (indent 1))
`(let ((sanity-check-change-functions-op (list ,op)))
(sanity-check--message "%S..." ,op)
,@body
(sanity-check--message "%S...done" ,op)))
(defun sanity-check--message (&rest args)
(if sanity-check-change-functions-verbose (apply #'message args)))
(defvar-local sanity-check-change-functions-beg 0)
(defvar-local sanity-check-change-functions-end 0)
(defvar-local sanity-check-change-functions-buffer-size nil)
(defvar sanity-check-change-functions-errors nil)
(defun sanity-check-change-functions-error (description &rest args)
(push (apply #'format description args)
sanity-check-change-functions-errors))
(defun sanity-check-change-functions-check-size ()
(sanity-check--message "Size : %S == %S"
sanity-check-change-functions-buffer-size
(buffer-size))
(cond
((null sanity-check-change-functions-buffer-size)
(setq sanity-check-change-functions-buffer-size (buffer-size)))
((equal sanity-check-change-functions-buffer-size (buffer-size)) nil)
(t
(sanity-check-change-functions-error
"buffer-size %S == %S"
(buffer-size) sanity-check-change-functions-buffer-size)
(setq sanity-check-change-functions-buffer-size (buffer-size)))))
(defun sanity-check-change-functions-before (beg end)
(push `(BEFORE ,beg ,end) sanity-check-change-functions-op)
(sanity-check--message "Before: %S %S" beg end)
(unless (<= (point-min) beg end (point-max))
(sanity-check-change-functions-error
"Position bounds: %S <= %S <= %S <= %S"
(point-min) beg end (point-max)))
(sanity-check-change-functions-check-size)
(setq sanity-check-change-functions-beg beg)
(setq sanity-check-change-functions-end end))
(defun sanity-check-change-functions-after (beg end len)
(push `(AFTER ,beg ,end ,len) sanity-check-change-functions-op)
(sanity-check--message "After : %S %S (%S)" beg end len)
(unless (<= (point-min) beg end (point-max))
(sanity-check-change-functions-error
"Position bounds: %S <= %S <= %S <= %S"
(point-min) beg end (point-max)))
(unless (>= len 0)
(sanity-check-change-functions-error "len: %S >= 0" len))
(let ((bend (+ beg len)))
(unless (<= sanity-check-change-functions-beg
beg bend
sanity-check-change-functions-end)
(sanity-check-change-functions-error
"After covered by before: %S <= %S <= %S <= %S"
sanity-check-change-functions-beg beg bend
sanity-check-change-functions-end)))
(let ((offset (- end beg len)))
(setq sanity-check-change-functions-end
(+ sanity-check-change-functions-end offset))
(setq sanity-check-change-functions-buffer-size
(+ sanity-check-change-functions-buffer-size offset)))
(sanity-check-change-functions-check-size))
(defun sanity-check-change-functions-errors ()
(sanity-check-change-functions-check-size)
(if sanity-check-change-functions-errors
(cons (reverse sanity-check-change-functions-op)
sanity-check-change-functions-errors)))
(ert-deftest editfns-tests--before/after-change-functions ()
(with-temp-buffer
(add-hook 'before-change-functions
#'sanity-check-change-functions-before nil t)
(add-hook 'after-change-functions
#'sanity-check-change-functions-after nil t)
;; Bug#65451
(sanity-check-change-functions-with-op 'DABBREV-EXPAND
(insert "utf-8-unix\n\nUTF")
(call-interactively 'dabbrev-expand)
(should (null (sanity-check-change-functions-errors))))
(let ((beg (point)))
(sanity-check-change-functions-with-op 'ENCODE-CODING-REGION
(insert "ééé")
(encode-coding-region beg (point) 'utf-8)
(should (null (sanity-check-change-functions-errors))))
(sanity-check-change-functions-with-op 'DECODE-CODING-REGION
(decode-coding-region beg (point) 'utf-8)
(should (null (sanity-check-change-functions-errors)))))
(let ((beg (point))) ;bug#78042
(apply #'insert (make-list 5000 "hell\351 "))
(sanity-check-change-functions-with-op 'DECODE-CODING-LARGE-REGION
(decode-coding-region beg (point) 'windows-1252)
(should-not (sanity-check-change-functions-errors))))
(let ((beg (point))) ;bug#78042
(sanity-check-change-functions-with-op 'DECODE-CODING-INSERT
;; The `insert' calls make sure we track the buffer-size
;; so as to detect if `decode-coding-string' fails to run the
;; `*-change-functions'.
(insert "<")
(decode-coding-string "hell\351 " 'windows-1252 nil (current-buffer))
(forward-char 6)
(insert ">")
(should (equal "" (buffer-substring beg (point))))
(should-not (sanity-check-change-functions-errors))))
(sanity-check-change-functions-with-op 'ENCODE-CODING-STRING
(encode-coding-string "ééé" 'utf-8 nil (current-buffer))
(should (null (sanity-check-change-functions-errors))))
(sanity-check-change-functions-with-op 'DECODE-CODING-STRING
(decode-coding-string "\303\251\303\251\303\251"
'utf-8 nil (current-buffer))
(should (null (sanity-check-change-functions-errors))))))
(ert-deftest editfns-tests-styled-print ()
"Test bug#75754."
(let* ((print-unreadable-function
(lambda (&rest _args)
(garbage-collect)
(make-string 100 ?Ā t)))
(str "\"[1] ĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀĀ\""))
(should (string= (format "%S" (format "%S %S" [1] (symbol-function '+)))
str))))
(ert-deftest editfns-tests--bug76124 ()
(with-temp-buffer
(insert "Emacs forever!foo\n")
(insert "toto\n")
(goto-char (point-min))
;; Remove the trailing "foo", so as to move the gap between the
;; two lines.
(delete-region (- (pos-eol) 3) (pos-eol))
(add-hook 'before-change-functions
(lambda (beg end)
;; Eglot uses `encode-coding-region' which can also move
;; the gap, but let's do it more forcefully here.
(save-excursion
(goto-char beg)
(end-of-line)
(unless (> (point) end)
(with-silent-modifications
(insert "foo")
(delete-char -3)))))
nil t)
(goto-char (point-min))
(transpose-regions (pos-bol) (pos-eol)
(pos-bol 2) (pos-eol 2))
(should (equal (buffer-string) "toto\nEmacs forever!\n"))))
;;; editfns-tests.el ends here