code.delx.au - gnu-emacs/blob - test/lisp/json-tests.el

   1 ;;; json-tests.el --- Test suite for json.el
   2
   3 ;; Copyright (C) 2015 Free Software Foundation, Inc.
   4
   5 ;; Author: Dmitry Gutov <dgutov@yandex.ru>
   6
   7 ;; This program is free software; you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation, either version 3 of the License, or
  10 ;; (at your option) any later version.
  11
  12 ;; This program is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 ;;; Code:
  21
  22 (require 'ert)
  23 (require 'json)
  24
  25 (ert-deftest test-json-plist-reverse ()
  26   (should (equal (json--plist-reverse '()) '()))
  27   (should (equal (json--plist-reverse '(:a 1)) '(:a 1)))
  28   (should (equal (json--plist-reverse '(:a 1 :b 2 :c 3))
  29                  '(:c 3 :b 2 :a 1))))
  30
  31 (ert-deftest test-json-plist-to-alist ()
  32   (should (equal (json--plist-to-alist '()) '()))
  33   (should (equal (json--plist-to-alist '(:a 1)) '((:a . 1))))
  34   (should (equal (json--plist-to-alist '(:a 1 :b 2 :c 3))
  35                  '((:a . 1) (:b . 2) (:c . 3)))))
  36
  37 (ert-deftest test-json-encode-plist ()
  38   (let ((plist '(:a 1 :b 2)))
  39     (should (equal (json-encode plist) "{\"a\":1,\"b\":2}"))))
  40
  41 (ert-deftest json-encode-simple-alist ()
  42   (should (equal (json-encode '((a . 1)
  43                                 (b . 2)))
  44                  "{\"a\":1,\"b\":2}")))
  45
  46 (ert-deftest test-json-encode-hash-table ()
  47   (let ((hash-table (make-hash-table))
  48         (json-encoding-object-sort-predicate 'string<))
  49     (puthash :a 1 hash-table)
  50     (puthash :b 2 hash-table)
  51     (puthash :c 3 hash-table)
  52     (should (equal (json-encode hash-table)
  53                    "{\"a\":1,\"b\":2,\"c\":3}"))))
  54
  55 (ert-deftest test-json-encode-alist-with-sort-predicate ()
  56   (let ((alist '((:c . 3) (:a . 1) (:b . 2)))
  57         (json-encoding-object-sort-predicate 'string<))
  58     (should (equal (json-encode alist) "{\"a\":1,\"b\":2,\"c\":3}"))))
  59
  60 (ert-deftest test-json-encode-plist-with-sort-predicate ()
  61   (let ((plist '(:c 3 :a 1 :b 2))
  62         (json-encoding-object-sort-predicate 'string<))
  63     (should (equal (json-encode plist) "{\"a\":1,\"b\":2,\"c\":3}"))))
  64
  65 (ert-deftest json-read-simple-alist ()
  66   (let ((json-object-type 'alist))
  67     (should (equal (json-read-from-string "{\"a\": 1, \"b\": 2}")
  68                    '((a . 1)
  69                      (b . 2))))))
  70
  71 (ert-deftest json-encode-string-with-special-chars ()
  72   (should (equal (json-encode-string "a\n\fb")
  73                  "\"a\\n\\fb\""))
  74   (should (equal (json-encode-string "\nasdфыв\u001f\u007ffgh\t")
  75                  "\"\\nasdфыв\\u001f\u007ffgh\\t\"")))
  76
  77 (ert-deftest json-read-string-with-special-chars ()
  78   (should (equal (json-read-from-string "\"\\nasd\\u0444\\u044b\\u0432fgh\\t\"")
  79                  "\nasdфывfgh\t")))
  80
  81 (ert-deftest test-json-path-to-position-with-objects ()
  82   (let* ((json-string "{\"foo\": {\"bar\": {\"baz\": \"value\"}}}")
  83          (matched-path (json-path-to-position 32 json-string)))
  84     (should (equal (plist-get matched-path :path) '("foo" "bar" "baz")))
  85     (should (equal (plist-get matched-path :match-start) 25))
  86     (should (equal (plist-get matched-path :match-end) 32))))
  87
  88 (ert-deftest test-json-path-to-position-with-arrays ()
  89   (let* ((json-string "{\"foo\": [\"bar\", [\"baz\"]]}")
  90          (matched-path (json-path-to-position 20 json-string)))
  91     (should (equal (plist-get matched-path :path) '("foo" 1 0)))
  92     (should (equal (plist-get matched-path :match-start) 18))
  93     (should (equal (plist-get matched-path :match-end) 23))))
  94
  95 (ert-deftest test-json-path-to-position-no-match ()
  96   (let* ((json-string "{\"foo\": {\"bar\": \"baz\"}}")
  97          (matched-path (json-path-to-position 5 json-string)))
  98     (should (null matched-path))))
  99
 100 (provide 'json-tests)
 101 ;;; json-tests.el ends here