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bug#22044: 24.4; url-expand.el and url-parse.el not conforming to RFC 39


From: Alain Schneble
Subject: bug#22044: 24.4; url-expand.el and url-parse.el not conforming to RFC 3986
Date: Sat, 26 Dec 2015 00:44:55 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (windows-nt)

Lars Ingebrigtsen <address@hidden> writes:

> Alain Schneble <address@hidden> writes:
>
>> When I created the patch, the new test directory layout (see 75336a2 -
>> Merge branch 'feature/standard-test-location') has not yet been merged
>> to master. I guess that these tests should now reside in test/lisp/url/
>> if we follow the new convention. Shall I create a new patch or will you
>> just move the files there?
>
> If you could roll a new patch, that would be easier for me.  :-)

Here is the adapted patch.

>From 6f676f50f08b398c5de57126af8c67f1f0501137 Mon Sep 17 00:00:00 2001
From: Alain Schneble <address@hidden>
Date: Sat, 26 Dec 2015 00:25:56 +0100
Subject: [PATCH] Make relative URL parsing and resolution consistent with RFC
 3986 (bug#22044)

* test/lisp/url/url-parse-tests.el: add tests covering url-generic-parse-url.
* test/lisp/url/url-expand-tests.el: add tests covering url-expand-file-name.
* lisp/url/url-parse.el (url-generic-parse-url): keep empty fragment
information in URL-struct.
* lisp/url/url-parse.el (url-path-and-query): do not artificially turn empty
path and query into nil path and query, respectively.
* lisp/url/url-expand.el (url-expander-remove-relative-links): do not turn
empty path into an absolute ("/") path.
* lisp/url/url-expand.el (url-expand-file-name): properly resolve
fragment-only URIs. Do not just return them unchanged.
* lisp/url/url-expand.el (url-default-expander): an empty path in the relative
reference URI should not drop the last segment.
---
 lisp/url/url-expand.el            |  84 +++++++++----------
 lisp/url/url-parse.el             |   5 +-
 test/lisp/url/url-expand-tests.el | 105 ++++++++++++++++++++++++
 test/lisp/url/url-parse-tests.el  | 167 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 313 insertions(+), 48 deletions(-)
 create mode 100644 test/lisp/url/url-expand-tests.el
 create mode 100644 test/lisp/url/url-parse-tests.el

diff --git a/lisp/url/url-expand.el b/lisp/url/url-expand.el
index c468a79..600a36d 100644
--- a/lisp/url/url-expand.el
+++ b/lisp/url/url-expand.el
@@ -26,32 +26,35 @@
 (require 'url-parse)
 
 (defun url-expander-remove-relative-links (name)
-  ;; Strip . and .. from pathnames
-  (let ((new (if (not (string-match "^/" name))
-                (concat "/" name)
-              name)))
-
-    ;; If it ends with a '/.' or '/..', tack on a trailing '/' sot hat
-    ;; the tests that follow are not too complicated in terms of
-    ;; looking for '..' or '../', etc.
-    (if (string-match "/\\.+$" new)
-       (setq new (concat new "/")))
-
-    ;; Remove '/./' first
-    (while (string-match "/\\(\\./\\)" new)
-      (setq new (concat (substring new 0 (match-beginning 1))
-                       (substring new (match-end 1)))))
-
-    ;; Then remove '/../'
-    (while (string-match "/\\([^/]*/\\.\\./\\)" new)
-      (setq new (concat (substring new 0 (match-beginning 1))
-                       (substring new (match-end 1)))))
-
-    ;; Remove cruft at the beginning of the string, so people that put
-    ;; in extraneous '..' because they are morons won't lose.
-    (while (string-match "^/\\.\\.\\(/\\)" new)
-      (setq new (substring new (match-beginning 1) nil)))
-    new))
+  (if (equal name "")
+      ;; An empty name is a properly valid relative URL reference/path.
+      ""
+    ;; Strip . and .. from pathnames
+    (let ((new (if (not (string-match "^/" name))
+                   (concat "/" name)
+                 name)))
+
+      ;; If it ends with a '/.' or '/..', tack on a trailing '/' sot hat
+      ;; the tests that follow are not too complicated in terms of
+      ;; looking for '..' or '../', etc.
+      (if (string-match "/\\.+$" new)
+          (setq new (concat new "/")))
+
+      ;; Remove '/./' first
+      (while (string-match "/\\(\\./\\)" new)
+        (setq new (concat (substring new 0 (match-beginning 1))
+                          (substring new (match-end 1)))))
+
+      ;; Then remove '/../'
+      (while (string-match "/\\([^/]*/\\.\\./\\)" new)
+        (setq new (concat (substring new 0 (match-beginning 1))
+                          (substring new (match-end 1)))))
+
+      ;; Remove cruft at the beginning of the string, so people that put
+      ;; in extraneous '..' because they are morons won't lose.
+      (while (string-match "^/\\.\\.\\(/\\)" new)
+        (setq new (substring new (match-beginning 1) nil)))
+      new)))
 
 (defun url-expand-file-name (url &optional default)
   "Convert URL to a fully specified URL, and canonicalize it.
@@ -89,8 +92,6 @@ path components followed by `..' are removed, along with the 
`..' itself."
   (cond
    ((= (length url) 0)                 ; nil or empty string
     (url-recreate-url default))
-   ((string-match "^#" url)            ; Offset link, use it raw
-    url)
    ((string-match url-nonrelative-link url) ; Fully-qualified URL, return it 
immediately
     url)
    (t
@@ -120,29 +121,24 @@ path components followed by `..' are removed, along with 
the `..' itself."
        (setf (url-host urlobj) (or (url-host urlobj) (url-host defobj))))
     (if (string= "ftp"  (url-type urlobj))
        (setf (url-user urlobj) (or (url-user urlobj) (url-user defobj))))
-    (if (string= (url-filename urlobj) "")
-       (setf (url-filename urlobj) "/"))
     ;; If the object we're expanding from is full, then we are now
     ;; full.
     (unless (url-fullness urlobj)
       (setf (url-fullness urlobj) (url-fullness defobj)))
-    (if (string-match "^/" (url-filename urlobj))
-       nil
-      (let ((query nil)
-           (file nil)
-           (sepchar nil))
-       (if (string-match "[?#]" (url-filename urlobj))
-           (setq query (substring (url-filename urlobj) (match-end 0))
-                 file (substring (url-filename urlobj) 0 (match-beginning 0))
-                 sepchar (substring (url-filename urlobj) (match-beginning 0) 
(match-end 0)))
-         (setq file (url-filename urlobj)))
+    (let* ((pathandquery (url-path-and-query urlobj))
+           (defpathandquery (url-path-and-query defobj))
+           (file (car pathandquery))
+           (query (or (cdr pathandquery) (and (equal file "") (cdr 
defpathandquery)))))
+      (if (string-match "^/" (url-filename urlobj))
+          (setq file (url-expander-remove-relative-links file))
        ;; We use concat rather than expand-file-name to combine
        ;; directory and file name, since urls do not follow the same
        ;; rules as local files on all platforms.
-       (setq file (url-expander-remove-relative-links
-                   (concat (url-file-directory (url-filename defobj)) file)))
-       (setf (url-filename urlobj)
-              (if query (concat file sepchar query) file))))))
+        (setq file (url-expander-remove-relative-links
+                    (if (equal file "")
+                        (or (car (url-path-and-query defobj)) "")
+                      (concat (url-file-directory (url-filename defobj)) 
file)))))
+      (setf (url-filename urlobj) (if query (concat file "?" query) file)))))
 
 (provide 'url-expand)
 
diff --git a/lisp/url/url-parse.el b/lisp/url/url-parse.el
index dbf0c38..c3159a7 100644
--- a/lisp/url/url-parse.el
+++ b/lisp/url/url-parse.el
@@ -59,8 +59,6 @@ where each of PATH and QUERY are strings or nil."
          (setq path  (substring name 0 (match-beginning 0))
                query (substring name (match-end 0)))
        (setq path name)))
-    (if (equal path "") (setq path nil))
-    (if (equal query "") (setq query nil))
     (cons path query)))
 
 (defun url-port-if-non-default (urlobj)
@@ -217,8 +215,7 @@ parses to
            (when (looking-at "#")
              (let ((opoint (point)))
                (forward-char 1)
-               (unless (eobp)
-                 (setq fragment (buffer-substring (point) (point-max))))
+                (setq fragment (buffer-substring (point) (point-max)))
                (delete-region opoint (point-max)))))
 
           (if (and host (string-match "%[0-9][0-9]" host))
diff --git a/test/lisp/url/url-expand-tests.el 
b/test/lisp/url/url-expand-tests.el
new file mode 100644
index 0000000..2bd2868
--- /dev/null
+++ b/test/lisp/url/url-expand-tests.el
@@ -0,0 +1,105 @@
+;;; url-expand-tests.el --- Test suite for relative URI/URL resolution.
+
+;; Copyright (C) 2012-2015 Free Software Foundation, Inc.
+
+;; Author: Alain Schneble <address@hidden>
+;; Version: 1.0
+
+;; 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:
+
+;; Test cases covering URI reference resolution as described in RFC3986,
+;; section 5. Reference Resolution and especially the relative resolution
+;; rules specified in section 5.2. Relative Resolution.
+
+;; Each test calls `url-expand-file-name', typically with a relative
+;; reference URI and a base URI as string and compares the result (Actual)
+;; against a manually specified URI (Expected)
+
+;;; Code:
+
+(require 'url-expand)
+(require 'ert)
+
+(ert-deftest url-expand-file-name/relative-resolution-normal-examples ()
+  "RFC 3986, Section 5.4 Reference Resolution Examples / Section 5.4.1. Normal 
Examples"
+  (should (equal (url-expand-file-name "g:h"     "http://a/b/c/d;p?q";) "g:h"))
+  (should (equal (url-expand-file-name "g"       "http://a/b/c/d;p?q";) 
"http://a/b/c/g";))
+  (should (equal (url-expand-file-name "./g"     "http://a/b/c/d;p?q";) 
"http://a/b/c/g";))
+  (should (equal (url-expand-file-name "g/"      "http://a/b/c/d;p?q";) 
"http://a/b/c/g/";))
+  (should (equal (url-expand-file-name "/g"      "http://a/b/c/d;p?q";) 
"http://a/g";))
+  (should (equal (url-expand-file-name "//g"     "http://a/b/c/d;p?q";) 
"http://g";))
+  (should (equal (url-expand-file-name "?y"      "http://a/b/c/d;p?q";) 
"http://a/b/c/d;p?y";))
+  (should (equal (url-expand-file-name "g?y"     "http://a/b/c/d;p?q";) 
"http://a/b/c/g?y";))
+  (should (equal (url-expand-file-name "#s"      "http://a/b/c/d;p?q";) 
"http://a/b/c/d;p?q#s";))
+  (should (equal (url-expand-file-name "g#s"     "http://a/b/c/d;p?q";) 
"http://a/b/c/g#s";))
+  (should (equal (url-expand-file-name "g?y#s"   "http://a/b/c/d;p?q";) 
"http://a/b/c/g?y#s";))
+  (should (equal (url-expand-file-name ";x"      "http://a/b/c/d;p?q";) 
"http://a/b/c/;x";))
+  (should (equal (url-expand-file-name "g;x"     "http://a/b/c/d;p?q";) 
"http://a/b/c/g;x";))
+  (should (equal (url-expand-file-name "g;x?y#s" "http://a/b/c/d;p?q";) 
"http://a/b/c/g;x?y#s";))
+  (should (equal (url-expand-file-name ""        "http://a/b/c/d;p?q";) 
"http://a/b/c/d;p?q";))
+  (should (equal (url-expand-file-name "."       "http://a/b/c/d;p?q";) 
"http://a/b/c/";))
+  (should (equal (url-expand-file-name "./"      "http://a/b/c/d;p?q";) 
"http://a/b/c/";))
+  (should (equal (url-expand-file-name ".."      "http://a/b/c/d;p?q";) 
"http://a/b/";))
+  (should (equal (url-expand-file-name "../"     "http://a/b/c/d;p?q";) 
"http://a/b/";))
+  (should (equal (url-expand-file-name "../g"    "http://a/b/c/d;p?q";) 
"http://a/b/g";))
+  (should (equal (url-expand-file-name "../.."   "http://a/b/c/d;p?q";) 
"http://a/";))
+  (should (equal (url-expand-file-name "../../"  "http://a/b/c/d;p?q";) 
"http://a/";))
+  (should (equal (url-expand-file-name "../../g" "http://a/b/c/d;p?q";) 
"http://a/g";)))
+
+(ert-deftest url-expand-file-name/relative-resolution-absolute-examples ()
+  "RFC 3986, Section 5.4 Reference Resolution Examples / Section 5.4.2. 
Abnormal Examples"
+  (should (equal (url-expand-file-name "../../../g"    "http://a/b/c/d;p?q";) 
"http://a/g";))
+  (should (equal (url-expand-file-name "../../../../g" "http://a/b/c/d;p?q";) 
"http://a/g";))
+
+  (should (equal (url-expand-file-name "/./g"          "http://a/b/c/d;p?q";) 
"http://a/g";))
+  (should (equal (url-expand-file-name "/../g"         "http://a/b/c/d;p?q";) 
"http://a/g";))
+  (should (equal (url-expand-file-name "g."            "http://a/b/c/d;p?q";) 
"http://a/b/c/g.";))
+  (should (equal (url-expand-file-name ".g"            "http://a/b/c/d;p?q";) 
"http://a/b/c/.g";))
+  (should (equal (url-expand-file-name "g.."           "http://a/b/c/d;p?q";) 
"http://a/b/c/g..";))
+  (should (equal (url-expand-file-name "..g"           "http://a/b/c/d;p?q";) 
"http://a/b/c/..g";))
+
+  (should (equal (url-expand-file-name "./../g"        "http://a/b/c/d;p?q";) 
"http://a/b/g";))
+  (should (equal (url-expand-file-name "./g/."         "http://a/b/c/d;p?q";) 
"http://a/b/c/g/";))
+  (should (equal (url-expand-file-name "g/./h"         "http://a/b/c/d;p?q";) 
"http://a/b/c/g/h";))
+  (should (equal (url-expand-file-name "g/../h"        "http://a/b/c/d;p?q";) 
"http://a/b/c/h";))
+  (should (equal (url-expand-file-name "g;x=1/./y"     "http://a/b/c/d;p?q";) 
"http://a/b/c/g;x=1/y";))
+  (should (equal (url-expand-file-name "g;x=1/../y"    "http://a/b/c/d;p?q";) 
"http://a/b/c/y";))
+
+  (should (equal (url-expand-file-name "g?y/./x"       "http://a/b/c/d;p?q";) 
"http://a/b/c/g?y/./x";))
+  (should (equal (url-expand-file-name "g?y/../x"      "http://a/b/c/d;p?q";) 
"http://a/b/c/g?y/../x";))
+  (should (equal (url-expand-file-name "g#s/./x"       "http://a/b/c/d;p?q";) 
"http://a/b/c/g#s/./x";))
+  (should (equal (url-expand-file-name "g#s/../x"      "http://a/b/c/d;p?q";) 
"http://a/b/c/g#s/../x";))
+
+  (should (equal (url-expand-file-name "http:g"        "http://a/b/c/d;p?q";) 
"http:g")) ; for strict parsers
+  )
+
+(ert-deftest url-expand-file-name/relative-resolution-additional-examples ()
+  "Reference Resolution Examples / Arbitrary Examples"
+  (should (equal (url-expand-file-name "" "http://host/foobar";) 
"http://host/foobar";))
+  (should (equal (url-expand-file-name "?y"      "http://a/b/c/d";) 
"http://a/b/c/d?y";))
+  (should (equal (url-expand-file-name "?y"      "http://a/b/c/d/";) 
"http://a/b/c/d/?y";))
+  (should (equal (url-expand-file-name "?y#fragment"      
"http://a/b/c/d;p?q";) "http://a/b/c/d;p?y#fragment";))
+  (should (equal (url-expand-file-name "#bar" "http://host";) 
"http://host#bar";))
+  (should (equal (url-expand-file-name "#bar" "http://host/";) 
"http://host/#bar";))
+  (should (equal (url-expand-file-name "#bar" "http://host/foo";) 
"http://host/foo#bar";))
+  (should (equal (url-expand-file-name "foo#bar" "http://host/foobar";) 
"http://host/foo#bar";))
+  (should (equal (url-expand-file-name "foo#bar" "http://host/foobar/";) 
"http://host/foobar/foo#bar";)))
+
+(provide 'url-expand-tests)
+
+;;; url-expand-tests.el ends here
diff --git a/test/lisp/url/url-parse-tests.el b/test/lisp/url/url-parse-tests.el
new file mode 100644
index 0000000..154e091
--- /dev/null
+++ b/test/lisp/url/url-parse-tests.el
@@ -0,0 +1,167 @@
+;;; url-parse-tests.el --- Test suite for URI/URL parsing.
+
+;; Copyright (C) 2012-2015 Free Software Foundation, Inc.
+
+;; Author: Alain Schneble <address@hidden>
+;; Version: 1.0
+
+;; 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:
+
+;; Test cases covering generic URI syntax as described in RFC3986,
+;; section 3. Syntax Components and 4. Usage. See also appendix
+;; A. Collected ABNF for URI, as the example given here are all
+;; productions of this grammar.
+
+;; Each tests parses a given URI string - whether relative or absolute -
+;; using `url-generic-parse-url' and compares the constructed
+;; URL-struct (Actual) against a manually `url-parse-make-urlobj'-
+;; constructed URL-struct (Expected).
+
+;;; Code:
+
+(require 'url-parse)
+(require 'ert)
+
+(ert-deftest url-generic-parse-url/generic-uri-examples ()
+  "RFC 3986, section 1.1.2. Examples / Example illustrating several URI 
schemes and variations in their common syntax components"
+  (should (equal (url-generic-parse-url "ftp://ftp.is.co.za/rfc/rfc1808.txt";) 
(url-parse-make-urlobj "ftp" nil nil "ftp.is.co.za" nil "/rfc/rfc1808.txt" nil 
nil t)))
+  (should (equal (url-generic-parse-url "http://www.ietf.org/rfc/rfc2396.txt";) 
(url-parse-make-urlobj "http" nil nil "www.ietf.org" nil "/rfc/rfc2396.txt" nil 
nil t)))
+  (should (equal (url-generic-parse-url 
"ldap://[2001:db8::7]/c=GB?objectClass?one";) (url-parse-make-urlobj "ldap" nil 
nil "[2001:db8::7]" nil "/c=GB?objectClass?one" nil nil t)))
+  (should (equal (url-generic-parse-url "mailto:address@hidden";) 
(url-parse-make-urlobj "mailto" nil nil nil nil "address@hidden" nil nil nil)))
+  (should (equal (url-generic-parse-url 
"news:comp.infosystems.www.servers.unix";) (url-parse-make-urlobj "news" nil nil 
nil nil "comp.infosystems.www.servers.unix" nil nil nil)))
+  (should (equal (url-generic-parse-url "tel:+1-816-555-1212") 
(url-parse-make-urlobj "tel" nil nil nil nil "+1-816-555-1212" nil nil nil)))
+  (should (equal (url-generic-parse-url "telnet://192.0.2.16:80/") 
(url-parse-make-urlobj "telnet" nil nil "192.0.2.16" 80 "/" nil nil t)))
+  (should (equal (url-generic-parse-url 
"urn:oasis:names:specification:docbook:dtd:xml:4.1.2") (url-parse-make-urlobj 
"urn" nil nil nil nil "oasis:names:specification:docbook:dtd:xml:4.1.2" nil nil 
nil))))
+
+(ert-deftest url-generic-parse-url/generic-uri ()
+  "RFC 3986, section 3. Syntax Components / generic URI syntax"
+  ;; empty path
+  (should (equal (url-generic-parse-url "http://host#";) (url-parse-make-urlobj 
"http" nil nil "host" nil "" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host?#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "?" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host?query#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "?query" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host?#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "?" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host?query#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "?query" "fragment" nil t)))
+  ;; absolute path /
+  (should (equal (url-generic-parse-url "http://host/#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host/?#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/?" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/?query#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/?query" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/?#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/?" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host/?query#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/?query" "fragment" nil t)))
+  ;; absolute path /foo
+  (should (equal (url-generic-parse-url "http://host/foo#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo?#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo?" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo?query#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo?query" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo?#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo?" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo?query#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo?query" "fragment" nil 
t)))
+  ;; absolute path /foo/
+  (should (equal (url-generic-parse-url "http://host/foo/#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/?#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/?" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/?query#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/?query" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/?#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/?" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/?query#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/?query" "fragment" nil 
t)))
+  ;; absolute path /foo/bar
+  (should (equal (url-generic-parse-url "http://host/foo/bar#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar?#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar?" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar?query#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar?query" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar?#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar?" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar?query#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar?query" "fragment" 
nil t)))
+  ;; absolute path /foo/bar/
+  (should (equal (url-generic-parse-url "http://host/foo/bar/#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar/" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar/#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar/" "fragment" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar/?#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar/?" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar/?query#";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar/?query" "" nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar/?#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar/?" "fragment" nil 
t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar/?query#fragment";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar/?query" "fragment" 
nil t)))
+  ;; for more examples of URIs without fragments, see tests covering section 
4.3. Absolute URI
+  )
+
+(ert-deftest url-generic-parse-url/network-path-reference ()
+  "RFC 3986, section 4.2. Relative Reference / network-path reference: a 
relative reference that begins with two slash characters"
+  (should (equal (url-generic-parse-url "//host") (url-parse-make-urlobj nil 
nil nil "host" nil "" nil nil t)))
+  (should (equal (url-generic-parse-url "//host/") (url-parse-make-urlobj nil 
nil nil "host" nil "/" nil nil t)))
+  (should (equal (url-generic-parse-url "//host/foo") (url-parse-make-urlobj 
nil nil nil "host" nil "/foo" nil nil t)))
+  (should (equal (url-generic-parse-url "//host/foo/bar") 
(url-parse-make-urlobj nil nil nil "host" nil "/foo/bar" nil nil t)))
+  (should (equal (url-generic-parse-url "//host/foo/bar/") 
(url-parse-make-urlobj nil nil nil "host" nil "/foo/bar/" nil nil t))))
+
+(ert-deftest url-generic-parse-url/absolute-path-reference ()
+  "RFC 3986, section 4.2. Relative Reference / absolute-path reference: a 
relative reference that begins with a single slash character"
+  (should (equal (url-generic-parse-url "/") (url-parse-make-urlobj nil nil 
nil nil nil "/" nil nil nil)))
+  (should (equal (url-generic-parse-url "/foo") (url-parse-make-urlobj nil nil 
nil nil nil "/foo" nil nil nil)))
+  (should (equal (url-generic-parse-url "/foo/bar") (url-parse-make-urlobj nil 
nil nil nil nil "/foo/bar" nil nil nil)))
+  (should (equal (url-generic-parse-url "/foo/bar/") (url-parse-make-urlobj 
nil nil nil nil nil "/foo/bar/" nil nil nil)))
+  (should (equal (url-generic-parse-url "/foo/bar#") (url-parse-make-urlobj 
nil nil nil nil nil "/foo/bar" "" nil nil)))
+  (should (equal (url-generic-parse-url "/foo/bar/#") (url-parse-make-urlobj 
nil nil nil nil nil "/foo/bar/" "" nil nil))))
+
+(ert-deftest url-generic-parse-url/relative-path-reference ()
+  "RFC 3986, section 4.2. Relative Reference / relative-path reference: a 
relative reference that does not begin with a slash character"
+  (should (equal (url-generic-parse-url "foo") (url-parse-make-urlobj nil nil 
nil nil nil "foo" nil nil nil)))
+  (should (equal (url-generic-parse-url "foo/bar") (url-parse-make-urlobj nil 
nil nil nil nil "foo/bar" nil nil nil)))
+  (should (equal (url-generic-parse-url "foo/bar/") (url-parse-make-urlobj nil 
nil nil nil nil "foo/bar/" nil nil nil)))
+  (should (equal (url-generic-parse-url "./foo") (url-parse-make-urlobj nil 
nil nil nil nil "./foo" nil nil nil)))
+  (should (equal (url-generic-parse-url "./foo/bar") (url-parse-make-urlobj 
nil nil nil nil nil "./foo/bar" nil nil nil)))
+  (should (equal (url-generic-parse-url "./foo/bar/") (url-parse-make-urlobj 
nil nil nil nil nil "./foo/bar/" nil nil nil)))
+  (should (equal (url-generic-parse-url "../foo") (url-parse-make-urlobj nil 
nil nil nil nil "../foo" nil nil nil)))
+  (should (equal (url-generic-parse-url "../foo/bar") (url-parse-make-urlobj 
nil nil nil nil nil "../foo/bar" nil nil nil)))
+  (should (equal (url-generic-parse-url "../foo/bar/") (url-parse-make-urlobj 
nil nil nil nil nil "../foo/bar/" nil nil nil)))
+  (should (equal (url-generic-parse-url "./this:that") (url-parse-make-urlobj 
nil nil nil nil nil "./this:that" nil nil nil)))
+  ;; for more examples of relative-path references, see tests covering section 
4.4. Same-Document Reference
+  )
+
+(ert-deftest url-generic-parse-url/absolute-uri ()
+  "RFC 3986, section 4.3. Absolute URI / absolute URI: absolute form of a URI 
without a fragment identifier"
+  ;; empty path
+  (should (equal (url-generic-parse-url "http://host";) (url-parse-make-urlobj 
"http" nil nil "host" nil "" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host?";) (url-parse-make-urlobj 
"http" nil nil "host" nil "?" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host?query";) 
(url-parse-make-urlobj "http" nil nil "host" nil "?query" nil nil t)))
+  ;; absolute path /
+  (should (equal (url-generic-parse-url "http://host/";) (url-parse-make-urlobj 
"http" nil nil "host" nil "/" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host/?";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/?" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host/?query";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/?query" nil nil t)))
+  ;; absolute path /foo
+  (should (equal (url-generic-parse-url "http://host/foo";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo?";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo?" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo?query";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo?query" nil nil t)))
+  ;; absolute path /foo/
+  (should (equal (url-generic-parse-url "http://host/foo/";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/?";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/?" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/?query";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/?query" nil nil t)))
+  ;; absolute path /foo/bar
+  (should (equal (url-generic-parse-url "http://host/foo/bar";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar?";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar?" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar?query";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar?query" nil nil t)))
+  ;; absolute path /foo/bar/
+  (should (equal (url-generic-parse-url "http://host/foo/bar/";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar/" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar/?";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar/?" nil nil t)))
+  (should (equal (url-generic-parse-url "http://host/foo/bar/?query";) 
(url-parse-make-urlobj "http" nil nil "host" nil "/foo/bar/?query" nil nil t)))
+  ;; example mentioned in RFC3986, section 5.4. Reference Resolution Examples
+  (should (equal (url-generic-parse-url "http://a/b/c/d;p?q";) 
(url-parse-make-urlobj "http" nil nil "a" nil "/b/c/d;p?q" nil nil t))))
+
+(ert-deftest url-generic-parse-url/same-decument-reference ()
+  "RFC 3986, section 4.4. Same-Document Reference / same-document reference: 
empty or number sign (\"#\") followed by a fragment identifier"
+  (should (equal (url-generic-parse-url "") (url-parse-make-urlobj nil nil nil 
nil nil "" nil nil nil)))
+  (should (equal (url-generic-parse-url "#") (url-parse-make-urlobj nil nil 
nil nil nil "" "" nil nil)))
+  (should (equal (url-generic-parse-url "#foo") (url-parse-make-urlobj nil nil 
nil nil nil "" "foo" nil nil))))
+
+(provide 'url-parse-tests)
+
+;;; url-parse-tests.el ends here
-- 
2.6.2.windows.1


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