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Add test suite for sgml-html-meta-auto-coding-function

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* test/lisp/international/mule-tests.el (sgml-html-meta-pre)
(sgml-html-meta-post, sgml-html-meta-run, sgml-html-meta-utf-8)
(sgml-html-meta-windows-hebrew, sgml-html-meta-none)
(sgml-html-meta-unknown-coding, sgml-html-meta-no-pre)
(sgml-html-meta-no-post-less-than-10lines)
(sgml-html-meta-no-post-10lines, sgml-html-meta-utf-8-with-bom): Add.
This commit is contained in:
Benjamin Riefenstahl 2023-01-17 20:13:39 +02:00 • committed by Eli Zaretskii
parent 0fb90f524d
commit 846838dbab
1 changed files with 66 additions and 0 deletions
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66
test/lisp/international/mule-tests.el
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@ -70,6 +70,72 @@
;; The chinese-hz encoding is not ASCII compatible.
(should-not (coding-system-get 'chinese-hz :ascii-compatible-p)))
;;; Testing `sgml-html-meta-auto-coding-function'.
(defconst sgml-html-meta-pre "<!doctype html><html><head>"
"The beginning of a minimal HTML document.")
(defconst sgml-html-meta-post "</head></html>"
"The end of a minimal HTML document.")
(defun sgml-html-meta-run (coding-system)
"Run `sgml-html-meta-auto-coding-function' on a minimal HTML.
When CODING-SYSTEM is not nil, insert it, wrapped in a '<meta>'
element. When CODING-SYSTEM contains HTML meta characters or
white space, insert it as-is, without additional formatting. Use
the variables `sgml-html-meta-pre' and `sgml-html-meta-post' to
provide HTML fragments. Some tests override those variables."
(with-temp-buffer
(insert sgml-html-meta-pre
(cond ((not coding-system)
"")
((string-match "[<>'\"\n ]" coding-system)
coding-system)
(t
(format "<meta charset='%s'>" coding-system)))
sgml-html-meta-post)
(goto-char (point-min))
(sgml-html-meta-auto-coding-function (- (point-max) (point-min)))))
(ert-deftest sgml-html-meta-utf-8 ()
"Baseline: UTF-8."
(should (eq 'utf-8 (sgml-html-meta-run "utf-8"))))
(ert-deftest sgml-html-meta-windows-hebrew ()
"A non-Unicode charset."
(should (eq 'windows-1255 (sgml-html-meta-run "windows-1255"))))
(ert-deftest sgml-html-meta-none ()
(should (eq nil (sgml-html-meta-run nil))))
(ert-deftest sgml-html-meta-unknown-coding ()
(should (eq nil (sgml-html-meta-run "XXX"))))
(ert-deftest sgml-html-meta-no-pre ()
"Without the prefix, so not HTML."
(let ((sgml-html-meta-pre ""))
(should (eq nil (sgml-html-meta-run "utf-8")))))
(ert-deftest sgml-html-meta-no-post-less-than-10lines ()
"No '</head>', detect charset in the first 10 lines."
(let ((sgml-html-meta-post ""))
(should (eq 'utf-8 (sgml-html-meta-run
(concat "\n\n\n\n\n\n\n\n\n"
"<meta charset='utf-8'>"))))))
(ert-deftest sgml-html-meta-no-post-10lines ()
"No '</head>', do not detect charset after the first 10 lines."
(let ((sgml-html-meta-post ""))
(should (eq nil (sgml-html-meta-run
(concat "\n\n\n\n\n\n\n\n\n\n"
"<meta charset='utf-8'>"))))))
(ert-deftest sgml-html-meta-utf-8-with-bom ()
"Requesting 'UTF-8' does not override `utf-8-with-signature'.
Check fix for Bug#20623."
(let ((buffer-file-coding-system 'utf-8-with-signature))
(should (eq 'utf-8-with-signature (sgml-html-meta-run "utf-8")))))
;; Stop "Local Variables" above causing confusion when visiting this file.