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c5f9d47ba4
* test/src/json-tests.el (json-serialize/invalid-unicode): Fix two bugs that canceled each other out. "a\xCCb" is actually a valid Unicode string because the hexadecimal character escape isn't terminated by the "b". But this was masked by an incorrect closing parentheses, causing an unrelated error.
125 lines
4.9 KiB
EmacsLisp
125 lines
4.9 KiB
EmacsLisp
;;; json-tests.el --- unit tests for json.c -*- lexical-binding: t; -*-
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;; Copyright (C) 2017 Free Software Foundation, Inc.
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Unit tests for src/json.c.
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;;; Code:
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(require 'cl-lib)
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(require 'map)
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(ert-deftest json-serialize/roundtrip ()
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(skip-unless (fboundp 'json-serialize))
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;; The noncharacter U+FFFF should be passed through,
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;; cf. https://www.unicode.org/faq/private_use.html#noncharacters.
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(let ((lisp [:null :false t 0 123 -456 3.75 "abc\uFFFFαβγ𝔸𝐁𝖢\"\\"])
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(json "[null,false,true,0,123,-456,3.75,\"abc\uFFFFαβγ𝔸𝐁𝖢\\\"\\\\\"]"))
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(should (equal (json-serialize lisp) json))
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(with-temp-buffer
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(json-insert lisp)
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(should (equal (buffer-string) json))
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(should (eobp)))
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(should (equal (json-parse-string json) lisp))
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(with-temp-buffer
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(insert json)
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(goto-char 1)
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(should (equal (json-parse-buffer) lisp))
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(should (eobp)))))
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(ert-deftest json-serialize/object ()
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(skip-unless (fboundp 'json-serialize))
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(let ((table (make-hash-table :test #'equal)))
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(puthash "abc" [1 2 t] table)
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(puthash "def" :null table)
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(should (equal (json-serialize table)
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"{\"abc\":[1,2,true],\"def\":null}"))))
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(ert-deftest json-parse-string/object ()
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(skip-unless (fboundp 'json-parse-string))
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(let ((input
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"{ \"abc\" : [1, 2, true], \"def\" : null, \"abc\" : [9, false] }\n"))
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(let ((actual (json-parse-string input)))
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(should (hash-table-p actual))
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(should (equal (hash-table-count actual) 2))
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(should (equal (cl-sort (map-pairs actual) #'string< :key #'car)
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'(("abc" . [9 :false]) ("def" . :null)))))
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(should (equal (json-parse-string input :object-type 'alist)
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'((abc . [9 :false]) (def . :null))))))
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(ert-deftest json-parse-string/string ()
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(skip-unless (fboundp 'json-parse-string))
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(should-error (json-parse-string "[\"formfeed\f\"]") :type 'json-parse-error)
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(should (equal (json-parse-string "[\"foo \\\"bar\\\"\"]") ["foo \"bar\""]))
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(should (equal (json-parse-string "[\"abcαβγ\"]") ["abcαβγ"]))
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(should (equal (json-parse-string "[\"\\nasd\\u0444\\u044b\\u0432fgh\\t\"]")
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["\nasdфывfgh\t"]))
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(should (equal (json-parse-string "[\"\\uD834\\uDD1E\"]") ["\U0001D11E"]))
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(should-error (json-parse-string "foo") :type 'json-parse-error))
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(ert-deftest json-serialize/string ()
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(skip-unless (fboundp 'json-serialize))
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(should (equal (json-serialize ["foo"]) "[\"foo\"]"))
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(should (equal (json-serialize ["a\n\fb"]) "[\"a\\n\\fb\"]"))
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(should (equal (json-serialize ["\nasdфыв\u001f\u007ffgh\t"])
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"[\"\\nasdфыв\\u001F\u007ffgh\\t\"]"))
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(should (equal (json-serialize ["a\0b"]) "[\"a\\u0000b\"]")))
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(ert-deftest json-serialize/invalid-unicode ()
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(skip-unless (fboundp 'json-serialize))
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;; FIXME: "out of memory" is the wrong error signal, but we don't
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;; currently distinguish between error types when serializing.
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(should-error (json-serialize ["a\uDBBBb"]) :type 'json-out-of-memory)
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(should-error (json-serialize (vector (string ?a #x110000 ?b)))
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:type 'json-out-of-memory)
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(should-error (json-serialize ["u\xCCv"]) :type 'json-out-of-memory))
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(ert-deftest json-parse-string/null ()
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(skip-unless (fboundp 'json-parse-string))
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;; FIXME: Reconsider whether this is the right behavior.
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(should-error (json-parse-string "[a\\u0000b]") :type 'json-parse-error))
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(ert-deftest json-parse-string/incomplete ()
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(skip-unless (fboundp 'json-parse-string))
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(should-error (json-parse-string "[123") :type 'json-end-of-file))
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(ert-deftest json-parse-string/trailing ()
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(skip-unless (fboundp 'json-parse-string))
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(should-error (json-parse-string "[123] [456]") :type 'json-trailing-content))
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(ert-deftest json-parse-buffer/incomplete ()
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(skip-unless (fboundp 'json-parse-buffer))
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(with-temp-buffer
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(insert "[123")
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(goto-char 1)
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(should-error (json-parse-buffer) :type 'json-end-of-file)
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(should (bobp))))
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(ert-deftest json-parse-buffer/trailing ()
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(skip-unless (fboundp 'json-parse-buffer))
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(with-temp-buffer
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(insert "[123] [456]")
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(goto-char 1)
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(should (equal (json-parse-buffer) [123]))
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(should-not (bobp))
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(should (looking-at-p (rx " [456]" eos)))))
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(provide 'json-tests)
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;;; json-tests.el ends here
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