--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/3rdparty/vmime/tests/parser/charsetTest.cpp	Tue Aug 17 11:19:54 2021 +0200
@@ -0,0 +1,149 @@
+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002-2013 Vincent Richard <vincent@vmime.org>
+//
+// This program 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.
+//
+// This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library.  Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+#include "tests/testUtils.hpp"
+
+#include "charsetTestSuites.hpp"
+
+
+VMIME_TEST_SUITE_BEGIN(charsetTest)
+
+	VMIME_TEST_LIST_BEGIN
+		// Test valid input
+		VMIME_TEST(testConvertStringValid)
+		VMIME_TEST(testConvertStreamValid)
+		VMIME_TEST(testEncodingHebrew1255)
+
+		// IDNA
+		VMIME_TEST(testEncodeIDNA)
+		VMIME_TEST(testDecodeIDNA)
+
+		VMIME_TEST(testUTF7Support)
+	VMIME_TEST_LIST_END
+
+
+	void testConvertStringValid()
+	{
+		for (unsigned int i = 0 ; i < charsetTestSuitesCount ; ++i)
+		{
+			const charsetTestSuiteStruct& entry = charsetTestSuites[i];
+
+			std::ostringstream testName;
+			testName << i << ": " << entry.fromCharset << " -> " << entry.toCharset;
+
+			const unsigned long inLength = (entry.fromLength == 0 ? strlen(entry.fromBytes) : entry.fromLength);
+			vmime::string in(entry.fromBytes, entry.fromBytes + inLength);
+
+			const unsigned long outLength = (entry.toLength == 0 ? strlen(entry.toBytes) : entry.toLength);
+			vmime::string expectedOut(entry.toBytes, entry.toBytes + outLength);
+
+			vmime::string actualOut;
+
+			vmime::charset::convert
+				(in, actualOut, entry.fromCharset, entry.toCharset);
+
+			VASSERT_EQ(testName.str(), toHex(expectedOut), toHex(actualOut));
+		}
+	}
+
+	void testConvertStreamValid()
+	{
+		for (unsigned int i = 0 ; i < charsetTestSuitesCount ; ++i)
+		{
+			const charsetTestSuiteStruct& entry = charsetTestSuites[i];
+
+			std::ostringstream testName;
+			testName << i << ": " << entry.fromCharset << " -> " << entry.toCharset;
+
+			const unsigned long inLength = (entry.fromLength == 0 ? strlen(entry.fromBytes) : entry.fromLength);
+			vmime::string in(entry.fromBytes, entry.fromBytes + inLength);
+
+			const unsigned long outLength = (entry.toLength == 0 ? strlen(entry.toBytes) : entry.toLength);
+			vmime::string expectedOut(entry.toBytes, entry.toBytes + outLength);
+
+			vmime::string actualOut;
+			vmime::utility::outputStreamStringAdapter os(actualOut);
+
+			vmime::utility::inputStreamStringAdapter is(in);
+
+			vmime::charset::convert
+				(is, os, entry.fromCharset, entry.toCharset);
+
+			os.flush();
+
+			VASSERT_EQ(testName.str(), toHex(expectedOut), toHex(actualOut));
+		}
+	}
+
+	void testEncodingHebrew1255()
+	{
+		// hewbrew string in windows-1255 charset
+		const char data[] = "\xe9\xf9\xf7\xf8\xe9\xf9\xf8\xf7\xe9\xe9\xf9";
+		vmime::word w = vmime::word(data, "windows-1255");
+		vmime::string encoded = w.generate();
+		// less than 60% ascii, base64 received
+		VASSERT_EQ("1", "=?windows-1255?B?6fn3+On5+Pfp6fk=?=", encoded);
+	}
+
+	static const vmime::string convertHelper
+		(const vmime::string& in, const vmime::charset& csrc, const vmime::charset& cdest)
+	{
+		vmime::string out;
+		vmime::charset::convert(in, out, csrc, cdest);
+
+		return out;
+	}
+
+	void testEncodeIDNA()
+	{
+		VASSERT_EQ("1", "xn--espaol-zwa", convertHelper("español", "utf-8", "idna"));
+
+		// Tests from ICANN
+		VASSERT_EQ("2.1", "xn--hxajbheg2az3al", convertHelper("παράδειγμα", "utf-8", "idna"));
+		VASSERT_EQ("2.2", "xn--jxalpdlp", convertHelper("δοκιμή", "utf-8", "idna"));
+
+		VASSERT_EQ("3.1", "xn--mgbh0fb", convertHelper("مثال", "utf-8", "idna"));
+		VASSERT_EQ("3.2", "xn--kgbechtv", convertHelper("إختبار", "utf-8", "idna"));
+	}
+
+	void testDecodeIDNA()
+	{
+		VASSERT_EQ("1", "español", convertHelper("xn--espaol-zwa", "idna", "utf-8"));
+
+		// Tests from ICANN
+		VASSERT_EQ("2.1", "παράδειγμα", convertHelper("xn--hxajbheg2az3al", "idna", "utf-8"));
+		VASSERT_EQ("2.2", "δοκιμή", convertHelper("xn--jxalpdlp", "idna", "utf-8"));
+
+		VASSERT_EQ("3.1", "مثال", convertHelper("xn--mgbh0fb", "idna", "utf-8"));
+		VASSERT_EQ("3.2", "إختبار", convertHelper("xn--kgbechtv", "idna", "utf-8"));
+	}
+
+	void testUTF7Support()
+	{
+		// Ensure UTF-7 is supported, because it is used for IMAP
+		VASSERT_EQ("1", "VMime +- UTF-7 encoding", convertHelper("VMime + UTF-7 encoding", "utf-8", "utf-7"));
+		VASSERT_EQ("2", "f+APg-o", convertHelper("\x66\xc3\xb8\x6f", "utf-8", "utf-7"));
+	}
+
+VMIME_TEST_SUITE_END
+