--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/3rdparty/vmime/tests/utility/stringProxyTest.cpp	Tue Aug 17 11:19:54 2021 +0200
@@ -0,0 +1,190 @@
+//
+// 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"
+
+
+VMIME_TEST_SUITE_BEGIN(stringProxyTest)
+
+	VMIME_TEST_LIST_BEGIN
+		VMIME_TEST(testConstruct)
+		VMIME_TEST(testConstruct2)
+
+		VMIME_TEST(testDetach)
+
+		VMIME_TEST(testSet)
+
+		VMIME_TEST(testExtract)
+
+		VMIME_TEST(testOperatorLTLT1)
+		VMIME_TEST(testOperatorLTLT2)
+	VMIME_TEST_LIST_END
+
+
+	void testConstruct()
+	{
+		vmime::utility::stringProxy s;
+
+		VASSERT_EQ("1", static_cast <vmime::size_t>(0), s.length());
+		VASSERT_EQ("2", static_cast <vmime::size_t>(0), s.start());
+		VASSERT_EQ("3", static_cast <vmime::size_t>(0), s.end());
+	}
+
+	void testConstruct2()
+	{
+		vmime::string str("This is a test string.");
+
+		vmime::utility::stringProxy s1(str);
+
+		VASSERT_EQ("1", str.length(), s1.length());
+		VASSERT_EQ("2", static_cast <vmime::size_t>(0), s1.start());
+		VASSERT_EQ("3", str.length(), s1.end());
+
+		vmime::utility::stringProxy s2(str, 10);
+
+		VASSERT_EQ("4", str.length() - 10, s2.length());
+		VASSERT_EQ("5", static_cast <vmime::size_t>(10), s2.start());
+		VASSERT_EQ("6", str.length(), s2.end());
+
+		vmime::utility::stringProxy s3(str, 10, 14);
+
+		VASSERT_EQ("7", static_cast <vmime::size_t>(4), s3.length());
+		VASSERT_EQ("8", static_cast <vmime::size_t>(10), s3.start());
+		VASSERT_EQ("9", static_cast <vmime::size_t>(14), s3.end());
+
+		VASSERT_EQ("10", 't', *s3.it_begin());
+		VASSERT_EQ("11", 'e', *(s3.it_begin() + 1));
+		VASSERT_EQ("12", 's', *(s3.it_begin() + 2));
+		VASSERT_EQ("13", 't', *(s3.it_begin() + 3));
+	}
+
+	void testDetach()
+	{
+		vmime::utility::stringProxy s;
+		s = "foo";
+
+		s.detach();
+
+		VASSERT_EQ("1", static_cast <vmime::size_t>(0), s.length());
+		VASSERT_EQ("2", static_cast <vmime::size_t>(0), s.start());
+		VASSERT_EQ("3", static_cast <vmime::size_t>(0), s.end());
+	}
+
+	void testSet()
+	{
+		vmime::string str("This is a test string.");
+
+		vmime::utility::stringProxy s1;
+		s1.set(str);
+
+		VASSERT_EQ("1", str.length(), s1.length());
+		VASSERT_EQ("2", static_cast <vmime::size_t>(0), s1.start());
+		VASSERT_EQ("3", str.length(), s1.end());
+
+		vmime::utility::stringProxy s2;
+		s2.set(str, 10);
+
+		VASSERT_EQ("4", str.length() - 10, s2.length());
+		VASSERT_EQ("5", static_cast <vmime::size_t>(10), s2.start());
+		VASSERT_EQ("6", str.length(), s2.end());
+
+		vmime::utility::stringProxy s3;
+		s3.set(str, 10, 14);
+
+		VASSERT_EQ("7", static_cast <vmime::size_t>(4), s3.length());
+		VASSERT_EQ("8", static_cast <vmime::size_t>(10), s3.start());
+		VASSERT_EQ("9", static_cast <vmime::size_t>(14), s3.end());
+
+		VASSERT_EQ("10", 't', *s3.it_begin());
+		VASSERT_EQ("11", 'e', *(s3.it_begin() + 1));
+		VASSERT_EQ("12", 's', *(s3.it_begin() + 2));
+		VASSERT_EQ("13", 't', *(s3.it_begin() + 3));
+	}
+
+	void testExtract()
+	{
+		vmime::string str("This is a test string.");
+
+		vmime::utility::stringProxy s1(str, 10, 14);
+
+		std::ostringstream oss1;
+		vmime::utility::outputStreamAdapter osa1(oss1);
+
+		s1.extract(osa1);
+
+		VASSERT_EQ("1", "test", oss1.str());
+
+		vmime::utility::stringProxy s2(str);
+
+		std::ostringstream oss2;
+		vmime::utility::outputStreamAdapter osa2(oss2);
+
+		s2.extract(osa2);
+
+		VASSERT_EQ("2", str, oss2.str());
+	}
+
+	void testOperatorLTLT1()
+	{
+		vmime::string str("This is a test string.");
+
+		vmime::utility::stringProxy s1(str, 10, 14);
+
+		std::ostringstream oss1;
+		oss1 << s1;
+
+		VASSERT_EQ("1", "test", oss1.str());
+
+		vmime::utility::stringProxy s2(str);
+
+		std::ostringstream oss2;
+		oss2 << s2;
+
+		VASSERT_EQ("2", str, oss2.str());
+	}
+
+	void testOperatorLTLT2()
+	{
+		vmime::string str("This is a test string.");
+
+		vmime::utility::stringProxy s1(str, 10, 14);
+
+		std::ostringstream oss1;
+		vmime::utility::outputStreamAdapter osa1(oss1);
+
+		osa1 << s1;
+
+		VASSERT_EQ("1", "test", oss1.str());
+
+		vmime::utility::stringProxy s2(str);
+
+		std::ostringstream oss2;
+		vmime::utility::outputStreamAdapter osa2(oss2);
+
+		osa2 << s2;
+
+		VASSERT_EQ("2", str, oss2.str());
+	}
+
+VMIME_TEST_SUITE_END
+