Rename all test files to reflect source layout.

 * CONTRIBUTE,Makefile.in,configure.ac: Update to reflect
   test directory moves.
 * test/file-organisation.org: New file.
 * test/automated/Makefile.in
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   test/automated/data/epg/pubkey.asc
   test/automated/data/epg/seckey.asc
   test/automated/data/files-bug18141.el.gz
   test/automated/data/flymake/test.c
   test/automated/data/flymake/test.pl
   test/automated/data/package/archive-contents
   test/automated/data/package/key.pub
   test/automated/data/package/key.sec
   test/automated/data/package/multi-file-0.2.3.tar
   test/automated/data/package/multi-file-readme.txt
   test/automated/data/package/newer-versions/archive-contents
   test/automated/data/package/newer-versions/new-pkg-1.0.el
   test/automated/data/package/newer-versions/simple-single-1.4.el
   test/automated/data/package/package-test-server.py
   test/automated/data/package/signed/archive-contents
   test/automated/data/package/signed/archive-contents.sig
   test/automated/data/package/signed/signed-bad-1.0.el
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   test/automated/data/package/simple-single-readme.txt
   test/automated/data/package/simple-two-depend-1.1.el
   test/automated/abbrev-tests.el
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   test/automated/calc-tests.el
   test/automated/icalendar-tests.el
   test/automated/character-fold-tests.el
   test/automated/comint-testsuite.el
   test/automated/descr-text-test.el
   test/automated/electric-tests.el
   test/automated/cl-generic-tests.el
   test/automated/cl-lib-tests.el
   test/automated/eieio-test-methodinvoke.el
   test/automated/eieio-test-persist.el
   test/automated/eieio-tests.el
   test/automated/ert-tests.el
   test/automated/ert-x-tests.el
   test/automated/generator-tests.el
   test/automated/let-alist.el
   test/automated/map-tests.el
   test/automated/advice-tests.el
   test/automated/package-test.el
   test/automated/pcase-tests.el
   test/automated/regexp-tests.el
   test/automated/seq-tests.el
   test/automated/subr-x-tests.el
   test/automated/tabulated-list-test.el
   test/automated/thunk-tests.el
   test/automated/timer-tests.el
   test/automated/epg-tests.el
   test/automated/eshell.el
   test/automated/faces-tests.el
   test/automated/file-notify-tests.el
   test/automated/auth-source-tests.el
   test/automated/gnus-tests.el
   test/automated/message-mode-tests.el
   test/automated/help-fns.el
   test/automated/imenu-test.el
   test/automated/info-xref.el
   test/automated/mule-util.el
   test/automated/isearch-tests.el
   test/automated/json-tests.el
   test/automated/bytecomp-tests.el
   test/automated/coding-tests.el
   test/automated/core-elisp-tests.el
   test/automated/decoder-tests.el
   test/automated/files.el
   test/automated/font-parse-tests.el
   test/automated/lexbind-tests.el
   test/automated/occur-tests.el
   test/automated/process-tests.el
   test/automated/syntax-tests.el
   test/automated/textprop-tests.el
   test/automated/undo-tests.el
   test/automated/man-tests.el
   test/automated/completion-tests.el
   test/automated/dbus-tests.el
   test/automated/newsticker-tests.el
   test/automated/sasl-scram-rfc-tests.el
   test/automated/tramp-tests.el
   test/automated/obarray-tests.el
   test/automated/compile-tests.el
   test/automated/elisp-mode-tests.el
   test/automated/f90.el
   test/automated/flymake-tests.el
   test/automated/python-tests.el
   test/automated/ruby-mode-tests.el
   test/automated/subword-tests.el
   test/automated/replace-tests.el
   test/automated/simple-test.el
   test/automated/sort-tests.el
   test/automated/subr-tests.el
   test/automated/reftex-tests.el
   test/automated/sgml-mode-tests.el
   test/automated/tildify-tests.el
   test/automated/thingatpt.el
   test/automated/url-future-tests.el
   test/automated/url-util-tests.el
   test/automated/add-log-tests.el
   test/automated/vc-bzr.el
   test/automated/vc-tests.el
   test/automated/xml-parse-tests.el
   test/BidiCharacterTest.txt
   test/biditest.el
   test/cedet/cedet-utests.el
   test/cedet/ede-tests.el
   test/cedet/semantic-ia-utest.el
   test/cedet/semantic-tests.el
   test/cedet/semantic-utest-c.el
   test/cedet/semantic-utest.el
   test/cedet/srecode-tests.el
   test/cedet/tests/test.c
   test/cedet/tests/test.el
   test/cedet/tests/test.make
   test/cedet/tests/testdoublens.cpp
   test/cedet/tests/testdoublens.hpp
   test/cedet/tests/testfriends.cpp
   test/cedet/tests/testjavacomp.java
   test/cedet/tests/testnsp.cpp
   test/cedet/tests/testpolymorph.cpp
   test/cedet/tests/testspp.c
   test/cedet/tests/testsppcomplete.c
   test/cedet/tests/testsppreplace.c
   test/cedet/tests/testsppreplaced.c
   test/cedet/tests/testsubclass.cpp
   test/cedet/tests/testsubclass.hh
   test/cedet/tests/testtypedefs.cpp
   test/cedet/tests/testvarnames.c
   test/etags/CTAGS.good
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   test/etags/c-src/emacs/src/gmalloc.c
   test/etags/c-src/emacs/src/keyboard.c
   test/etags/c-src/emacs/src/lisp.h
   test/etags/c-src/emacs/src/regex.h
   test/etags/c-src/etags.c
   test/etags/c-src/exit.c
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   test/etags/c-src/fail.c
   test/etags/c-src/getopt.h
   test/etags/c-src/h.h
   test/etags/c-src/machsyscalls.c
   test/etags/c-src/machsyscalls.h
   test/etags/c-src/sysdep.h
   test/etags/c-src/tab.c
   test/etags/c-src/torture.c
   test/etags/cp-src/MDiagArray2.h
   test/etags/cp-src/Range.h
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   test/etags/cp-src/functions.cpp
   test/etags/cp-src/screen.cpp
   test/etags/cp-src/screen.hpp
   test/etags/cp-src/x.cc
   test/etags/el-src/TAGTEST.EL
   test/etags/el-src/emacs/lisp/progmodes/etags.el
   test/etags/erl-src/gs_dialog.erl
   test/etags/f-src/entry.for
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   test/etags/forth-src/test-forth.fth
   test/etags/html-src/algrthms.html
   test/etags/html-src/index.shtml
   test/etags/html-src/software.html
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   test/etags/lua-src/allegro.lua
   test/etags/objc-src/PackInsp.h
   test/etags/objc-src/PackInsp.m
   test/etags/objc-src/Subprocess.h
   test/etags/objc-src/Subprocess.m
   test/etags/objcpp-src/SimpleCalc.H
   test/etags/objcpp-src/SimpleCalc.M
   test/etags/pas-src/common.pas
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   test/etags/ps-src/rfc1245.ps
   test/etags/pyt-src/server.py
   test/etags/tex-src/gzip.texi
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   test/etags/y-src/parse.c
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diff --git a/test/lisp/textmodes/tildify-tests.el b/test/lisp/textmodes/tildify-tests.el
new file mode 100644
index 00000000000..788abe7f731
--- /dev/null
+++ b/test/lisp/textmodes/tildify-tests.el
@@ -0,0 +1,264 @@
+;;; tildify-test.el --- ERT tests for tildify.el -*- lexical-binding: t -*-
+
+;; Copyright (C) 2014-2015 Free Software Foundation, Inc.
+
+;; Author:     Michal Nazarewicz <mina86@mina86.com>
+;; Version:    4.5
+;; Keywords:   text, TeX, SGML, wp
+
+;; 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:
+
+;; This package defines regression tests for the tildify package.
+
+;;; Code:
+
+(require 'ert)
+(require 'tildify)
+
+(defun tildify-test--example-sentence (space)
+  "Return an example sentence with SPACE where hard space is required."
+  (concat "Lorem ipsum v" space "dolor sit amet, a" space
+          "consectetur adipiscing elit."))
+
+
+(defun tildify-test--example-html (sentence &optional with-nbsp is-xml)
+  "Return an example HTML code.
+SENTENCE is placed where spaces should not be replaced with hard spaces, and
+WITH-NBSP is placed where spaces should be replaced with hard spaces.  If the
+latter is missing, SENTENCE will be used in all placeholder positions.
+If IS-XML is non-nil, <pre> tag is not treated specially."
+  (let ((with-nbsp (or with-nbsp sentence)))
+    (concat "<p>" with-nbsp "</p>\n"
+            "<pre>" (if is-xml with-nbsp sentence) "</pre>\n"
+            "<! -- " sentence " -- >\n"
+            "<p>" with-nbsp "</p>\n"
+            "<" sentence ">\n")))
+
+
+(defun tildify-test--test (modes input expected)
+  "Test tildify running in MODES.
+INPUT is the initial content of the buffer and EXPECTED is expected result
+after `tildify-buffer' is run."
+  (with-temp-buffer
+    (setq-local buffer-file-coding-system 'utf-8)
+    (dolist (mode modes)
+      (erase-buffer)
+      (funcall mode)
+      (let ((header (concat "Testing `tildify-buffer' in "
+                            (symbol-name mode) "\n")))
+        (insert header input)
+        (tildify-buffer t)
+        (should (string-equal (concat header expected) (buffer-string))))
+      (erase-buffer)
+      (let ((header (concat "Testing `tildify-region' in "
+                            (symbol-name mode) "\n")))
+        (insert header input)
+        (tildify-region (point-min) (point-max) t)
+        (should (string-equal (concat header expected) (buffer-string)))))))
+
+(ert-deftest tildify-test-html ()
+  "Tests tildification in an HTML document"
+  (let* ((sentence (tildify-test--example-sentence " "))
+         (with-nbsp (tildify-test--example-sentence " ")))
+    (tildify-test--test '(html-mode sgml-mode)
+                        (tildify-test--example-html sentence sentence)
+                        (tildify-test--example-html sentence with-nbsp))))
+
+(ert-deftest tildify-test-xml ()
+  "Tests tildification in an XML document"
+  (let* ((sentence (tildify-test--example-sentence " "))
+         (with-nbsp (tildify-test--example-sentence " ")))
+    (tildify-test--test '(nxml-mode)
+                        (tildify-test--example-html sentence sentence t)
+                        (tildify-test--example-html sentence with-nbsp t))))
+
+
+(defun tildify-test--example-tex (sentence &optional with-nbsp)
+  "Return an example (La)Tex code.
+SENTENCE is placed where spaces should not be replaced with hard spaces, and
+WITH-NBSP is placed where spaces should be replaced with hard spaces.  If the
+latter is missing, SENTENCE will be used in all placeholder positions."
+  (let ((with-nbsp (or with-nbsp sentence)))
+    (concat with-nbsp "\n"
+            "\\begin{verbatim}\n" sentence "\n\\end{verbatim}\n"
+            "\\verb#" sentence "#\n"
+            "$$" sentence "$$\n"
+            "$" sentence "$\n"
+            "\\[" sentence "\\]\n"
+            "\\v A % " sentence "\n"
+            with-nbsp "\n")))
+
+(ert-deftest tildify-test-tex ()
+  "Tests tildification in a (La)TeX document"
+  (let* ((sentence (tildify-test--example-sentence " "))
+         (with-nbsp (tildify-test--example-sentence "~")))
+    (tildify-test--test '(tex-mode latex-mode plain-tex-mode)
+                        (tildify-test--example-tex sentence sentence)
+                        (tildify-test--example-tex sentence with-nbsp))))
+
+
+(ert-deftest tildify-test-find-env-end-re-bug ()
+    "Tests generation of end-regex using mix of indexes and strings"
+  (with-temp-buffer
+    (insert "foo whatever end-foo")
+    (goto-char (point-min))
+    (should (string-equal "end-foo"
+                          (tildify--find-env "foo\\|bar"
+                                             '(("foo\\|bar" . ("end-" 0))))))))
+
+
+(ert-deftest tildify-test-find-env-group-index-bug ()
+    "Tests generation of match-string indexes"
+  (with-temp-buffer
+    (let ((pairs '(("start-\\(foo\\|bar\\)" . ("end-" 1))
+                   ("open-\\(foo\\|bar\\)" . ("close-" 1))))
+          (beg-re "start-\\(foo\\|bar\\)\\|open-\\(foo\\|bar\\)"))
+      (insert "open-foo whatever close-foo")
+      (goto-char (point-min))
+      (should (string-equal "close-foo" (tildify--find-env beg-re pairs))))))
+
+
+(defmacro with-test-foreach (expected &rest body)
+  "Helper macro for testing foreach functions.
+BODY has access to pairs variable and called lambda."
+  (declare (indent 1))
+  (let ((got (make-symbol "got")))
+    `(with-temp-buffer
+       (insert "1 /- 2 -/ 3 V~ 4 ~ 5 /- 6 -/ 7")
+       (let* ((pairs '(("/-" . "-/") ("V\\(.\\)" . (1))))
+              (,got "")
+              (called (lambda (s e)
+                        (setq ,got (concat ,got (buffer-substring s e))))))
+         (setq-local tildify-foreach-region-function
+                     (apply-partially 'tildify-foreach-ignore-environments
+                                      pairs))
+         ,@body
+         (should (string-equal ,expected ,got))))))
+
+(ert-deftest tildify-test-foreach-ignore-environments ()
+    "Basic test of `tildify-foreach-ignore-environments'"
+  (with-test-foreach "1  3  5  7"
+    (tildify-foreach-ignore-environments pairs called (point-min) (point-max))))
+
+
+(ert-deftest tildify-test-foreach-ignore-environments-early-return ()
+    "Test whether `tildify-foreach-ignore-environments' returns early
+The function must terminate as soon as callback returns nil."
+  (with-test-foreach "1 "
+    (tildify-foreach-ignore-environments
+     pairs (lambda (start end) (funcall called start end) nil)
+     (point-min) (point-max))))
+
+(ert-deftest tildify-test-foreach-region ()
+    "Basic test of `tildify--foreach-region'"
+  (with-test-foreach "1  3  5  7"
+    (tildify--foreach-region called (point-min) (point-max))))
+
+(ert-deftest tildify-test-foreach-region-early-return ()
+    "Test whether `tildify--foreach-ignore' returns early
+The function must terminate as soon as callback returns nil."
+  (with-test-foreach "1 "
+    (tildify--foreach-region (lambda (start end) (funcall called start end) nil)
+      (point-min) (point-max))))
+
+(ert-deftest tildify-test-foreach-region-limit-region ()
+    "Test whether `tildify--foreach-ignore' limits callback to given region"
+  (with-test-foreach "3 "
+    (tildify--foreach-region called
+      (+ (point-min) 10) (+ (point-min) 16))) ; start at "3" end past "4"
+  (with-test-foreach "3  5"
+    (tildify--foreach-region called
+      (+ (point-min) 10) (+ (point-min) 20)))) ; start at "3" end past "5"
+
+
+(defun tildify-space-test--test (modes nbsp env-open &optional set-space-string)
+  (with-temp-buffer
+    (setq-local buffer-file-coding-system 'utf-8)
+    (dolist (mode modes)
+      (funcall mode)
+      (when set-space-string
+        (setq-local tildify-space-string nbsp))
+      (let ((header (concat "Testing `tildify-space' in "
+                            (symbol-name mode) "\n")))
+        ;; Replace space with hard space.
+        (erase-buffer)
+        (insert header "Lorem v ")
+        (should (tildify-space))
+        (should (string-equal (concat header "Lorem v" nbsp) (buffer-string)))
+        ;; Inside and ignore environment, replacing does not happen.
+        (erase-buffer)
+        (insert header env-open "Lorem v ")
+        (should (not (tildify-space)))
+        (should (string-equal (concat header env-open "Lorem v ")
+                              (buffer-string)))))))
+
+(ert-deftest tildify-space-test-html ()
+  "Tests auto-tildification in an HTML document"
+  (tildify-space-test--test '(html-mode sgml-mode) " " "<pre>"))
+
+(ert-deftest tildify-space-test-html-nbsp ()
+  "Tests auto-tildification in an HTML document"
+  (tildify-space-test--test '(html-mode sgml-mode) "&nbsp;" "<pre>" t))
+
+(ert-deftest tildify-space-test-xml ()
+  "Tests auto-tildification in an XML document"
+  (tildify-space-test--test '(nxml-mode) " " "<! -- "))
+
+(ert-deftest tildify-space-test-tex ()
+  "Tests tildification in a TeX document"
+  (tildify-space-test--test '(tex-mode latex-mode plain-tex-mode)
+                            "~" "\\verb# "))
+
+
+(defun tildify-space-undo-test--test
+    (modes nbsp env-open &optional set-space-string)
+  (with-temp-buffer
+    (setq-local buffer-file-coding-system 'utf-8)
+    (dolist (mode modes)
+      (funcall mode)
+      (when set-space-string
+        (setq-local tildify-space-string nbsp))
+      (let ((header (concat "Testing double-space-undos in "
+                            (symbol-name mode) "\n")))
+        (erase-buffer)
+        (insert header "Lorem v" nbsp " ")
+        (should (not (tildify-space)))
+        (should (string-equal (concat header "Lorem v ") (buffer-string)))))))
+
+(ert-deftest tildify-space-undo-test-html ()
+  "Tests auto-tildification in an HTML document"
+  (tildify-space-undo-test--test '(html-mode sgml-mode) " " "<pre>"))
+
+(ert-deftest tildify-space-undo-test-html-nbsp ()
+  "Tests auto-tildification in an HTML document"
+  (tildify-space-undo-test--test '(html-mode sgml-mode) "&nbsp;" "<pre>" t))
+
+(ert-deftest tildify-space-undo-test-xml ()
+  "Tests auto-tildification in an XML document"
+  (tildify-space-undo-test--test '(nxml-mode) " " "<! -- "))
+
+(ert-deftest tildify-space-undo-test-tex ()
+  "Tests tildification in a TeX document"
+  (tildify-space-undo-test--test '(tex-mode latex-mode plain-tex-mode)
+                                 "~" "\\verb# "))
+
+
+
+(provide 'tildify-tests)
+
+;;; tildify-tests.el ends here