1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
| | ;;; json-tests.el --- unit tests for json.c -*- lexical-binding: t; -*-
;; Copyright (C) 2017 Free Software Foundation, Inc.
;; 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Unit tests for src/json.c.
;;; Code:
(require 'cl-lib)
(require 'map)
(ert-deftest json-serialize/roundtrip ()
(skip-unless (fboundp 'json-serialize))
;; The noncharacter U+FFFF should be passed through,
;; cf. https://www.unicode.org/faq/private_use.html#noncharacters.
(let ((lisp [:null :false t 0 123 -456 3.75 "abc\uFFFFαβγ𝔸𝐁𝖢\"\\"])
(json "[null,false,true,0,123,-456,3.75,\"abc\uFFFFαβγ𝔸𝐁𝖢\\\"\\\\\"]"))
(should (equal (json-serialize lisp) json))
(with-temp-buffer
(json-insert lisp)
(should (equal (buffer-string) json))
(should (eobp)))
(should (equal (json-parse-string json) lisp))
(with-temp-buffer
(insert json)
(goto-char 1)
(should (equal (json-parse-buffer) lisp))
(should (eobp)))))
(ert-deftest json-serialize/object ()
(skip-unless (fboundp 'json-serialize))
(let ((table (make-hash-table :test #'equal)))
(puthash "abc" [1 2 t] table)
(puthash "def" :null table)
(should (equal (json-serialize table)
"{\"abc\":[1,2,true],\"def\":null}"))))
(ert-deftest json-parse-string/object ()
(skip-unless (fboundp 'json-parse-string))
(let ((input
"{ \"abc\" : [1, 2, true], \"def\" : null, \"abc\" : [9, false] }\n"))
(let ((actual (json-parse-string input)))
(should (hash-table-p actual))
(should (equal (hash-table-count actual) 2))
(should (equal (cl-sort (map-pairs actual) #'string< :key #'car)
'(("abc" . [9 :false]) ("def" . :null)))))
(should (equal (json-parse-string input :object-type 'alist)
'((abc . [9 :false]) (def . :null))))))
(ert-deftest json-parse-string/string ()
(skip-unless (fboundp 'json-parse-string))
(should-error (json-parse-string "[\"formfeed\f\"]") :type 'json-parse-error)
(should (equal (json-parse-string "[\"foo \\\"bar\\\"\"]") ["foo \"bar\""]))
(should (equal (json-parse-string "[\"abcαβγ\"]") ["abcαβγ"]))
(should (equal (json-parse-string "[\"\\nasd\\u0444\\u044b\\u0432fgh\\t\"]")
["\nasdфывfgh\t"]))
(should (equal (json-parse-string "[\"\\uD834\\uDD1E\"]") ["\U0001D11E"]))
(should-error (json-parse-string "foo") :type 'json-parse-error))
(ert-deftest json-serialize/string ()
(skip-unless (fboundp 'json-serialize))
(should (equal (json-serialize ["foo"]) "[\"foo\"]"))
(should (equal (json-serialize ["a\n\fb"]) "[\"a\\n\\fb\"]"))
(should (equal (json-serialize ["\nasdфыв\u001f\u007ffgh\t"])
"[\"\\nasdфыв\\u001F\u007ffgh\\t\"]"))
(should (equal (json-serialize ["a\0b"]) "[\"a\\u0000b\"]")))
(ert-deftest json-serialize/invalid-unicode ()
(skip-unless (fboundp 'json-serialize))
(should-error (json-serialize ["a\uDBBBb"]) :type 'wrong-type-argument)
(should-error (json-serialize ["u\x110000v"]) :type 'wrong-type-argument)
(should-error (json-serialize ["u\x3FFFFFv"]) :type 'wrong-type-argument)
(should-error (json-serialize ["u\xCCv"]) :type 'wrong-type-argument))
(ert-deftest json-parse-string/null ()
(skip-unless (fboundp 'json-parse-string))
(should-error (json-parse-string "\x00") :type 'wrong-type-argument)
;; FIXME: Reconsider whether this is the right behavior.
(should-error (json-parse-string "[a\\u0000b]") :type 'json-parse-error))
(ert-deftest json-parse-string/invalid-unicode ()
"Some examples from
https://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt."
(skip-unless (fboundp 'json-parse-string))
;; Invalid UTF-8 code unit sequences.
(should-error (json-parse-string "[\"\x80\"]") :type 'json-parse-error)
(should-error (json-parse-string "[\"\xBF\"]") :type 'json-parse-error)
(should-error (json-parse-string "[\"\xFE\"]") :type 'json-parse-error)
(should-error (json-parse-string "[\"\xC0\xAF\"]") :type 'json-parse-error)
(should-error (json-parse-string "[\"\xC0\x80\"]") :type 'json-parse-error)
;; Surrogates.
(should-error (json-parse-string "[\"\uDB7F\"]")
:type 'json-parse-error)
(should-error (json-parse-string "[\"\xED\xAD\xBF\"]")
:type 'json-parse-error)
(should-error (json-parse-string "[\"\uDB7F\uDFFF\"]")
:type 'json-parse-error)
(should-error (json-parse-string "[\"\xED\xAD\xBF\xED\xBF\xBF\"]")
:type 'json-parse-error))
(ert-deftest json-parse-string/incomplete ()
(skip-unless (fboundp 'json-parse-string))
(should-error (json-parse-string "[123") :type 'json-end-of-file))
(ert-deftest json-parse-string/trailing ()
(skip-unless (fboundp 'json-parse-string))
(should-error (json-parse-string "[123] [456]") :type 'json-trailing-content))
(ert-deftest json-parse-buffer/incomplete ()
(skip-unless (fboundp 'json-parse-buffer))
(with-temp-buffer
(insert "[123")
(goto-char 1)
(should-error (json-parse-buffer) :type 'json-end-of-file)
(should (bobp))))
(ert-deftest json-parse-buffer/trailing ()
(skip-unless (fboundp 'json-parse-buffer))
(with-temp-buffer
(insert "[123] [456]")
(goto-char 1)
(should (equal (json-parse-buffer) [123]))
(should-not (bobp))
(should (looking-at-p (rx " [456]" eos)))))
(provide 'json-tests)
;;; json-tests.el ends here
|