--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/3rdparty/vmime/tests/parser/charsetFilteredOutputStreamTest.cpp	Tue Aug 17 11:19:54 2021 +0200
@@ -0,0 +1,215 @@
+//
+// 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 "vmime/charset.hpp"
+#include "vmime/charsetConverter.hpp"
+
+#include "charsetTestSuites.hpp"
+
+
+VMIME_TEST_SUITE_BEGIN(charsetFilteredOutputStreamTest)
+
+	VMIME_TEST_LIST_BEGIN
+		VMIME_TEST(testInputBufferUnderflow)
+		VMIME_TEST(testInvalidInput1)
+		VMIME_TEST(testStreamCopy)
+		VMIME_TEST(testOneByteAtTime)
+		VMIME_TEST(testVariableInputChunk)
+	VMIME_TEST_LIST_END
+
+
+	void testInputBufferUnderflow()
+	{
+		vmime::shared_ptr <vmime::charsetConverter> cc =
+			vmime::charsetConverter::create("utf-8", "iso-8859-1");
+
+		vmime::string output;
+		vmime::utility::outputStreamStringAdapter os(output);
+		vmime::shared_ptr <vmime::utility::filteredOutputStream> cfos = cc->getFilteredOutputStream(os);
+
+		VASSERT_NOT_NULL("filteredOutputStream availability", cfos);
+
+		// føo = 66 c3 b8 6f [UTF8]
+		// føo = 66 f8 6f [latin1]
+
+		cfos->write("\x66\xc3", 2);
+
+		// Incomplete UTF-8 sequence was not converted
+		VASSERT_EQ("chunk 1", toHex("f"), toHex(output));
+
+		// Write second byte of UTF-8 sequence
+		cfos->write("\xb8\x6f", 2);
+
+		VASSERT_EQ("chunk 2", toHex("f\xf8o"), toHex(output));
+	}
+
+	void testInvalidInput1()
+	{
+		vmime::string in("foo\xab\xcd\xef bar");
+		vmime::string expectedOut("foo??? bar");
+
+		vmime::string actualOut;
+		vmime::utility::outputStreamStringAdapter osa(actualOut);
+
+		vmime::shared_ptr <vmime::charsetConverter> conv =
+			vmime::charsetConverter::create
+				(vmime::charset("utf-8"),
+				 vmime::charset("iso-8859-1"));
+
+		vmime::shared_ptr <vmime::utility::charsetFilteredOutputStream> os =
+			conv->getFilteredOutputStream(osa);
+
+		VASSERT_NOT_NULL("filteredOutputStream availability", os);
+
+		vmime::utility::inputStreamStringAdapter is(in);
+
+		vmime::byte_t buffer[16];
+
+		for (int i = 0 ; !is.eof() ; ++i)
+			os->write(buffer, is.read(buffer, 1));
+
+		os->flush();
+
+		VASSERT_EQ("1", toHex(expectedOut), toHex(actualOut));
+	}
+
+	// Using 'bufferedStreamCopy'
+	void testStreamCopy()
+	{
+		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 osa(actualOut);
+
+			vmime::shared_ptr <vmime::charsetConverter> conv =
+				vmime::charsetConverter::create(entry.fromCharset, entry.toCharset);
+
+			vmime::shared_ptr <vmime::utility::charsetFilteredOutputStream> os =
+				conv->getFilteredOutputStream(osa);
+
+			VASSERT_NOT_NULL("filteredOutputStream availability", os);
+
+			vmime::utility::inputStreamStringAdapter is(in);
+
+			vmime::utility::bufferedStreamCopy(is, *os);
+
+			os->flush();
+
+			VASSERT_EQ(testName.str(), toHex(expectedOut), toHex(actualOut));
+		}
+	}
+
+	// One byte at a time
+	void testOneByteAtTime()
+	{
+		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 osa(actualOut);
+
+			vmime::shared_ptr <vmime::charsetConverter> conv =
+				vmime::charsetConverter::create(entry.fromCharset, entry.toCharset);
+
+			vmime::shared_ptr <vmime::utility::charsetFilteredOutputStream> os =
+				conv->getFilteredOutputStream(osa);
+
+			VASSERT_NOT_NULL("filteredOutputStream availability", os);
+
+			vmime::utility::inputStreamStringAdapter is(in);
+
+			vmime::byte_t buffer[16];
+
+			for (int i = 0 ; !is.eof() ; ++i)
+				os->write(buffer, is.read(buffer, 1));
+
+			os->flush();
+
+			VASSERT_EQ(testName.str(), toHex(expectedOut), toHex(actualOut));
+		}
+	}
+
+	// Variable chunks
+	void testVariableInputChunk()
+	{
+		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 osa(actualOut);
+
+			vmime::shared_ptr <vmime::charsetConverter> conv =
+				vmime::charsetConverter::create(entry.fromCharset, entry.toCharset);
+
+			vmime::shared_ptr <vmime::utility::charsetFilteredOutputStream> os =
+				conv->getFilteredOutputStream(osa);
+
+			VASSERT_NOT_NULL("filteredOutputStream availability", os);
+
+			vmime::utility::inputStreamStringAdapter is(in);
+
+			vmime::byte_t buffer[16];
+
+			for (int i = 0 ; !is.eof() ; ++i)
+				os->write(buffer, is.read(buffer, (i % 5) + 1));
+
+			os->flush();
+
+			VASSERT_EQ(testName.str(), toHex(expectedOut), toHex(actualOut));
+		}
+	}
+
+VMIME_TEST_SUITE_END