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56 lines
2.7 KiB
C++
56 lines
2.7 KiB
C++
/*
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* Copyright (c) 2023, Valtteri Koskivuori <vkoskiv@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/CharacterTypes.h>
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#include <LibIMAP/MessageHeaderEncoding.h>
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#include <LibTest/TestCase.h>
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TEST_CASE(test_decode)
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{
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auto decode_equal = [](StringView input, StringView expected) {
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auto decoded = MUST(IMAP::decode_rfc2047_encoded_words(input));
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EXPECT_EQ(StringView(decoded), StringView(expected));
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};
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// Underscores should end up as spaces
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decode_equal("=?utf-8?Q?Spaces_should_be_spaces_!?="sv, "Spaces should be spaces !"sv);
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// RFC 2047 Section 8 "Examples", https://datatracker.ietf.org/doc/html/rfc2047#section-8
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decode_equal("=?ISO-8859-1?Q?a?="sv, "a"sv);
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decode_equal("=?ISO-8859-1?Q?a?= b"sv, "a b"sv);
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// White space between adjacent 'encoded-word's is not displayed.
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decode_equal("=?ISO-8859-1?Q?a?= =?ISO-8859-1?Q?b?="sv, "ab"sv);
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// Even multiple SPACEs between 'encoded-word's are ignored for the purpose of display.
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decode_equal("=?ISO-8859-1?Q?a?= =?ISO-8859-1?Q?b?="sv, "ab"sv);
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decode_equal("=?ISO-8859-1?Q?a?= =?ISO-8859-1?Q?b?= =?ISO-8859-1?Q?c?==?ISO-8859-1?Q?d?="sv, "abcd"sv);
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// Any amount of linear-space-white between 'encoded-word's, even if it includes a CRLF followed by one or more SPACEs, is ignored for the purposes of display.
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decode_equal("=?utf-8?Q?a?=\r\n=?utf-8?Q?b?= \r\n=?utf-8?Q?c?=\r\n =?utf-8?Q?d?="sv, "abcd"sv);
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// In order to cause a SPACE to be displayed within a portion of encoded text, the SPACE MUST be encoded as part of the 'encoded-word'.
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decode_equal("=?ISO-8859-1?Q?a_b?="sv, "a b"sv);
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// In order to cause a SPACE to be displayed between two strings of encoded text, the SPACE MAY be encoded as part of one of the 'encoded-word's.
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decode_equal("=?ISO-8859-1?Q?a?= =?ISO-8859-2?Q?_b?="sv, "a b"sv);
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// More examples from the RFC document, a nice mix of different charsets & encodings.
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auto long_input = "From: =?US-ASCII?Q?Keith_Moore?= <moore@cs.utk.edu>"
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"To: =?ISO-8859-1?Q?Keld_J=F8rn_Simonsen?= <keld@dkuug.dk>"
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"CC: =?ISO-8859-1?Q?Andr=E9?= Pirard <PIRARD@vm1.ulg.ac.be>"
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"Subject: =?ISO-8859-1?B?SWYgeW91IGNhbiByZWFkIHRoaXMgeW8=?="
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"=?ISO-8859-2?B?dSB1bmRlcnN0YW5kIHRoZSBleGFtcGxlLg==?="sv;
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auto long_expected = "From: Keith Moore <moore@cs.utk.edu>"
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"To: Keld Jørn Simonsen <keld@dkuug.dk>"
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"CC: André Pirard <PIRARD@vm1.ulg.ac.be>"
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"Subject: If you can read this you understand the example."sv;
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decode_equal(long_input, long_expected);
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}
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