bug#21376: 25.0.50; Python tests fail on MS-Windows -- issues with the prompt

[Eli Zaretskii <eliz@gnu.org>]

Ping!  I really need help in debugging these failures.

TIA

> Date: Sat, 29 Aug 2015 15:21:01 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> 
> 4 of the Python tests fail on MS-Windows due to some issue related to
> the prompts displayed by the Python interpreter.  The 4 failed tests
> are:
> 
>    FAILED  python-shell-make-comint-4
>    FAILED  python-shell-prompt-detect-1
>    FAILED  python-shell-prompt-detect-2
>    FAILED  python-shell-prompt-set-calculated-regexps-6
> 
> I show below the relevant portions of python-tests.log.
> 
> I need help in figuring out what causes these.  One possible suspect
> is some buffering issue, due to which Emacs does not receive the
> prompt that Python prints.  Another possibility might be the version
> of the Python (I have 2.6.6 installed).  Or maybe something else.
> 
> Let me know if I can collect more information about the failures, or
> you'd like me to try something in order to find out the reasons.
> 
> Thanks.
> 
> Here are the relevant portions of the test log for the 4 failed tests:
> 
>   Test python-shell-make-comint-4 condition:
>       (ert-test-failed
>        ((should
> 	 (string= python-shell--prompt-calculated-input-regexp
> 		  (concat "^\\(extralargeinputprompt\\|\\.\\.> \\|" "block\\|py> \\|pdf\\|sml\\|in\\)")))
> 	:form
> 	(string= "^\\(extralargeinputprompt\\|block\\|pdf\\|sml\\|in\\)" "^\\(extralargeinputprompt\\|\\.\\.> \\|block\\|py> \\|pdf\\|sml\\|in\\)")
> 	:value nil))
>      FAILED  192/223  python-shell-make-comint-4
>   Test python-shell-prompt-detect-1 condition:
>       (ert-test-failed
>        ((should
> 	 (equal
> 	  (python-shell-prompt-detect)
> 	  '...))
> 	:form
> 	(equal nil
> 	       (">>> " "... " ""))
> 	:value nil :explanation
> 	(different-types nil
> 			 (">>> " "... " ""))))
>      FAILED  193/223  python-shell-prompt-detect-1
>   Test python-shell-prompt-detect-2 condition:
>       (ert-test-failed
>        ((should
> 	 (equal
> 	  (python-shell-prompt-detect)
> 	  '...))
> 	:form
> 	(equal nil
> 	       ("py> " "..> " "out "))
> 	:value nil :explanation
> 	(different-types nil
> 			 ("py> " "..> " "out "))))
>      FAILED  194/223  python-shell-prompt-detect-2
>   Test python-shell-prompt-set-calculated-regexps-6 condition:
>       (ert-test-failed
>        ((should
> 	 (string= python-shell--prompt-calculated-input-regexp "^\\(\\.\\.> \\|p\\.> \\|\\)"))
> 	:form
> 	(string= "^\\(\\)" "^\\(\\.\\.> \\|p\\.> \\|\\)")
> 	:value nil))
>      FAILED  204/223  python-shell-prompt-set-calculated-regexps-6
> 
> 
> In GNU Emacs 25.0.50.384 (i686-pc-mingw32)
>  of 2015-08-29
> Repository revision: 5e63c842007b0f85e91735a7c4e00be0b7fe9ba5
> Windowing system distributor `Microsoft Corp.', version 5.1.2600
> Configured using:
>  `configure --prefix=/d/usr --enable-checking=yes,glyphs --with-wide-int
>  'CFLAGS=-gdwarf-4 -g3 -O0''
> 
> Configured features:
> XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB
> TOOLKIT_SCROLL_BARS
> 
> Important settings:
>   value of $LANG: ENU
>   locale-coding-system: cp1255
> 
> Major mode: Lisp Interaction
> 
> Minor modes in effect:
>   tooltip-mode: t
>   global-eldoc-mode: t
>   electric-indent-mode: t
>   mouse-wheel-mode: t
>   tool-bar-mode: t
>   menu-bar-mode: t
>   file-name-shadow-mode: t
>   global-font-lock-mode: t
>   font-lock-mode: t
>   blink-cursor-mode: t
>   auto-composition-mode: t
>   auto-encryption-mode: t
>   auto-compression-mode: t
>   line-number-mode: t
>   transient-mark-mode: t
> 
> Recent messages:
> For information about GNU Emacs and the GNU system, type C-h C-a.
> 
> Load-path shadows:
> None found.
> 
> Features:
> (shadow sort gnus-util mail-extr emacsbug message dired format-spec
> rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
> mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
> mm-util help-fns help-mode easymenu cl-loaddefs pcase cl-lib mail-prsvr
> mail-utils time-date mule-util tooltip eldoc electric uniquify
> ediff-hook vc-hooks lisp-float-type mwheel dos-w32 ls-lisp disp-table
> w32-win w32-vars term/common-win tool-bar dnd fontset image regexp-opt
> fringe tabulated-list newcomment elisp-mode lisp-mode prog-mode register
> page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock
> font-lock syntax facemenu font-core frame cl-generic cham georgian
> utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
> japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european
> ethiopic indian cyrillic chinese charscript case-table epa-hook
> jka-cmpr-hook help simple abbrev minibuffer cl-preloaded nadvice
> loaddefs button faces cus-face macroexp files text-properties overlay
> sha1 md5 base64 format env code-pages mule custom widget
> hashtable-print-readable backquote w32notify w32 multi-tty
> make-network-process emacs)
> 
> Memory information:
> ((conses 16 84975 6948)
>  (symbols 56 19924 0)
>  (miscs 48 36 107)
>  (strings 16 15967 5012)
>  (string-bytes 1 393017)
>  (vectors 16 11212)
>  (vector-slots 8 402827 5209)
>  (floats 8 125 127)
>  (intervals 40 260 63)
>  (buffers 856 11))
> 
> 
> 
>