396 lines
12 KiB
C++
396 lines
12 KiB
C++
/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "test.h"
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#include "util/string.h"
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#include "util/serialize.h"
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#include <cmath>
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class TestSerialization : public TestBase {
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public:
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TestSerialization() { TestManager::registerTestModule(this); }
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const char *getName() { return "TestSerialization"; }
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void runTests(IGameDef *gamedef);
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void buildTestStrings();
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void testSerializeString();
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void testSerializeLongString();
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void testSerializeJsonString();
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void testDeSerializeString();
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void testDeSerializeLongString();
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void testStreamRead();
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void testStreamWrite();
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void testFloatFormat();
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std::string teststring2;
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std::wstring teststring2_w;
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std::string teststring2_w_encoded;
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static const u8 test_serialized_data[12 * 11 - 2];
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};
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static TestSerialization g_test_instance;
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void TestSerialization::runTests(IGameDef *gamedef)
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{
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buildTestStrings();
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TEST(testSerializeString);
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TEST(testDeSerializeString);
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TEST(testSerializeLongString);
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TEST(testDeSerializeLongString);
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TEST(testSerializeJsonString);
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TEST(testStreamRead);
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TEST(testStreamWrite);
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TEST(testFloatFormat);
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}
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////////////////////////////////////////////////////////////////////////////////
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// To be used like this:
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// mkstr("Some\0string\0with\0embedded\0nuls")
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// since std::string("...") doesn't work as expected in that case.
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template<size_t N> std::string mkstr(const char (&s)[N])
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{
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return std::string(s, N - 1);
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}
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void TestSerialization::buildTestStrings()
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{
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std::ostringstream tmp_os;
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std::wostringstream tmp_os_w;
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std::ostringstream tmp_os_w_encoded;
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for (int i = 0; i < 256; i++) {
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tmp_os << (char)i;
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tmp_os_w << (wchar_t)i;
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tmp_os_w_encoded << (char)0 << (char)i;
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}
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teststring2 = tmp_os.str();
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teststring2_w = tmp_os_w.str();
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teststring2_w_encoded = tmp_os_w_encoded.str();
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}
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void TestSerialization::testSerializeString()
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{
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// Test blank string
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UASSERT(serializeString16("") == mkstr("\0\0"));
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// Test basic string
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UASSERT(serializeString16("Hello world!") == mkstr("\0\14Hello world!"));
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// Test character range
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UASSERT(serializeString16(teststring2) == mkstr("\1\0") + teststring2);
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}
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void TestSerialization::testDeSerializeString()
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{
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// Test deserialize
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{
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std::istringstream is(serializeString16(teststring2), std::ios::binary);
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UASSERT(deSerializeString16(is) == teststring2);
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UASSERT(!is.eof());
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is.get();
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UASSERT(is.eof());
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}
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// Test deserialize an incomplete length specifier
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{
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std::istringstream is(mkstr("\x53"), std::ios::binary);
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EXCEPTION_CHECK(SerializationError, deSerializeString16(is));
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}
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// Test deserialize a string with incomplete data
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{
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std::istringstream is(mkstr("\x00\x55 abcdefg"), std::ios::binary);
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EXCEPTION_CHECK(SerializationError, deSerializeString16(is));
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}
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}
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void TestSerialization::testSerializeLongString()
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{
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// Test blank string
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UASSERT(serializeString32("") == mkstr("\0\0\0\0"));
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// Test basic string
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UASSERT(serializeString32("Hello world!") == mkstr("\0\0\0\14Hello world!"));
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// Test character range
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UASSERT(serializeString32(teststring2) == mkstr("\0\0\1\0") + teststring2);
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}
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void TestSerialization::testDeSerializeLongString()
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{
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// Test deserialize
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{
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std::istringstream is(serializeString32(teststring2), std::ios::binary);
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UASSERT(deSerializeString32(is) == teststring2);
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UASSERT(!is.eof());
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is.get();
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UASSERT(is.eof());
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}
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// Test deserialize an incomplete length specifier
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{
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std::istringstream is(mkstr("\x53"), std::ios::binary);
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EXCEPTION_CHECK(SerializationError, deSerializeString32(is));
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}
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// Test deserialize a string with incomplete data
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{
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std::istringstream is(mkstr("\x00\x00\x00\x05 abc"), std::ios::binary);
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EXCEPTION_CHECK(SerializationError, deSerializeString32(is));
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}
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// Test deserialize a string with a length too large
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{
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std::istringstream is(mkstr("\xFF\xFF\xFF\xFF blah"), std::ios::binary);
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EXCEPTION_CHECK(SerializationError, deSerializeString32(is));
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}
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}
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void TestSerialization::testSerializeJsonString()
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{
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// Test blank string
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UASSERT(serializeJsonString("") == "\"\"");
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// Test basic string
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UASSERT(serializeJsonString("Hello world!") == "\"Hello world!\"");
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// MSVC fails when directly using "\\\\"
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std::string backslash = "\\";
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UASSERT(serializeJsonString(teststring2) ==
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mkstr("\"") +
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"\\u0000\\u0001\\u0002\\u0003\\u0004\\u0005\\u0006\\u0007" +
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"\\b\\t\\n\\u000b\\f\\r\\u000e\\u000f" +
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"\\u0010\\u0011\\u0012\\u0013\\u0014\\u0015\\u0016\\u0017" +
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"\\u0018\\u0019\\u001a\\u001b\\u001c\\u001d\\u001e\\u001f" +
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" !\\\"" + teststring2.substr(0x23, 0x2f-0x23) +
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"\\/" + teststring2.substr(0x30, 0x5c-0x30) +
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backslash + backslash + teststring2.substr(0x5d, 0x7f-0x5d) + "\\u007f" +
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"\\u0080\\u0081\\u0082\\u0083\\u0084\\u0085\\u0086\\u0087" +
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"\\u0088\\u0089\\u008a\\u008b\\u008c\\u008d\\u008e\\u008f" +
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"\\u0090\\u0091\\u0092\\u0093\\u0094\\u0095\\u0096\\u0097" +
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"\\u0098\\u0099\\u009a\\u009b\\u009c\\u009d\\u009e\\u009f" +
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"\\u00a0\\u00a1\\u00a2\\u00a3\\u00a4\\u00a5\\u00a6\\u00a7" +
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"\\u00a8\\u00a9\\u00aa\\u00ab\\u00ac\\u00ad\\u00ae\\u00af" +
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"\\u00b0\\u00b1\\u00b2\\u00b3\\u00b4\\u00b5\\u00b6\\u00b7" +
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"\\u00b8\\u00b9\\u00ba\\u00bb\\u00bc\\u00bd\\u00be\\u00bf" +
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"\\u00c0\\u00c1\\u00c2\\u00c3\\u00c4\\u00c5\\u00c6\\u00c7" +
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"\\u00c8\\u00c9\\u00ca\\u00cb\\u00cc\\u00cd\\u00ce\\u00cf" +
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"\\u00d0\\u00d1\\u00d2\\u00d3\\u00d4\\u00d5\\u00d6\\u00d7" +
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"\\u00d8\\u00d9\\u00da\\u00db\\u00dc\\u00dd\\u00de\\u00df" +
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"\\u00e0\\u00e1\\u00e2\\u00e3\\u00e4\\u00e5\\u00e6\\u00e7" +
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"\\u00e8\\u00e9\\u00ea\\u00eb\\u00ec\\u00ed\\u00ee\\u00ef" +
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"\\u00f0\\u00f1\\u00f2\\u00f3\\u00f4\\u00f5\\u00f6\\u00f7" +
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"\\u00f8\\u00f9\\u00fa\\u00fb\\u00fc\\u00fd\\u00fe\\u00ff" +
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"\"");
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// Test deserialize
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std::istringstream is(serializeJsonString(teststring2), std::ios::binary);
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UASSERT(deSerializeJsonString(is) == teststring2);
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UASSERT(!is.eof());
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is.get();
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UASSERT(is.eof());
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}
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void TestSerialization::testStreamRead()
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{
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std::string datastr(
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(const char *)test_serialized_data,
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sizeof(test_serialized_data));
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std::istringstream is(datastr, std::ios_base::binary);
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UASSERT(readU8(is) == 0x11);
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UASSERT(readU16(is) == 0x2233);
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UASSERT(readU32(is) == 0x44556677);
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UASSERT(readU64(is) == 0x8899AABBCCDDEEFFLL);
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UASSERT(readS8(is) == -128);
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UASSERT(readS16(is) == 30000);
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UASSERT(readS32(is) == -6);
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UASSERT(readS64(is) == -43);
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UASSERT(readF1000(is) == 53.534f);
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UASSERT(readF1000(is) == -300000.32f);
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UASSERT(readF1000(is) == F1000_MIN);
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UASSERT(readF1000(is) == F1000_MAX);
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UASSERT(deSerializeString16(is) == "foobar!");
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UASSERT(readV2S16(is) == v2s16(500, 500));
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UASSERT(readV3S16(is) == v3s16(4207, 604, -30));
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UASSERT(readV2S32(is) == v2s32(1920, 1080));
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UASSERT(readV3S32(is) == v3s32(-400, 6400054, 290549855));
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UASSERT(readV3F1000(is) == v3f(500, 10024.2f, -192.54f));
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UASSERT(readARGB8(is) == video::SColor(255, 128, 50, 128));
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UASSERT(deSerializeString32(is) == "some longer string here");
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UASSERT(is.rdbuf()->in_avail() == 2);
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UASSERT(readU16(is) == 0xF00D);
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UASSERT(is.rdbuf()->in_avail() == 0);
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}
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void TestSerialization::testStreamWrite()
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{
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std::ostringstream os(std::ios_base::binary);
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std::string data;
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writeU8(os, 0x11);
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writeU16(os, 0x2233);
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writeU32(os, 0x44556677);
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writeU64(os, 0x8899AABBCCDDEEFFLL);
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writeS8(os, -128);
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writeS16(os, 30000);
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writeS32(os, -6);
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writeS64(os, -43);
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writeF1000(os, 53.53467f);
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writeF1000(os, -300000.32f);
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writeF1000(os, F1000_MIN);
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writeF1000(os, F1000_MAX);
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os << serializeString16("foobar!");
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data = os.str();
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UASSERT(data.size() < sizeof(test_serialized_data));
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UASSERT(!memcmp(&data[0], test_serialized_data, data.size()));
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writeV2S16(os, v2s16(500, 500));
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writeV3S16(os, v3s16(4207, 604, -30));
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writeV2S32(os, v2s32(1920, 1080));
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writeV3S32(os, v3s32(-400, 6400054, 290549855));
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writeV3F1000(os, v3f(500, 10024.2f, -192.54f));
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writeARGB8(os, video::SColor(255, 128, 50, 128));
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os << serializeString32("some longer string here");
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writeU16(os, 0xF00D);
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data = os.str();
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UASSERT(data.size() == sizeof(test_serialized_data));
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UASSERT(!memcmp(&data[0], test_serialized_data, sizeof(test_serialized_data)));
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}
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void TestSerialization::testFloatFormat()
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{
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FloatType type = getFloatSerializationType();
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u32 i;
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f32 fs, fm;
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// Check precision of float calculations on this platform
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const std::unordered_map<f32, u32> float_results = {
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{ 0.0f, 0x00000000UL },
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{ 1.0f, 0x3F800000UL },
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{ -1.0f, 0xBF800000UL },
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{ 0.1f, 0x3DCCCCCDUL },
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{ -0.1f, 0xBDCCCCCDUL },
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{ 1945329.25f, 0x49ED778AUL },
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{ -23298764.f, 0xCBB1C166UL },
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{ 0.5f, 0x3F000000UL },
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{ -0.5f, 0xBF000000UL }
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};
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for (const auto &v : float_results) {
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i = f32Tou32Slow(v.first);
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if (std::abs((s64)v.second - i) > 32) {
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printf("Inaccurate float values on %.9g, expected 0x%X, actual 0x%X\n",
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v.first, v.second, i);
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UASSERT(false);
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}
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fs = u32Tof32Slow(v.second);
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if (std::fabs(v.first - fs) > std::fabs(v.first * 0.000005f)) {
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printf("Inaccurate float values on 0x%X, expected %.9g, actual 0x%.9g\n",
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v.second, v.first, fs);
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UASSERT(false);
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}
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}
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if (type == FLOATTYPE_SLOW) {
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// conversion using memcpy is not possible
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// Skip exact float comparison checks below
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return;
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}
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// The code below compares the IEEE conversion functions with a
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// known good IEC559/IEEE754 implementation. This test neeeds
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// IEC559 compliance in the compiler.
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#if defined(__GNUC__) && (!defined(__STDC_IEC_559__) || defined(__FAST_MATH__))
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// GNU C++ lies about its IEC559 support when -ffast-math is active.
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// https://gcc.gnu.org/bugzilla//show_bug.cgi?id=84949
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bool is_iec559 = false;
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#else
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bool is_iec559 = std::numeric_limits<f32>::is_iec559;
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#endif
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if (!is_iec559)
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return;
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auto test_single = [&fs, &fm](const u32 &i) -> bool {
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memcpy(&fm, &i, 4);
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fs = u32Tof32Slow(i);
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if (fm != fs) {
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printf("u32Tof32Slow failed on 0x%X, expected %.9g, actual %.9g\n",
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i, fm, fs);
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return false;
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}
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if (f32Tou32Slow(fs) != i) {
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printf("f32Tou32Slow failed on %.9g, expected 0x%X, actual 0x%X\n",
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fs, i, f32Tou32Slow(fs));
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return false;
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}
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return true;
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};
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// Use step of prime 277 to speed things up from 3 minutes to a few seconds
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// Test from 0 to 0xFF800000UL (positive)
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for (i = 0x00000000UL; i <= 0x7F800000UL; i += 277)
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UASSERT(test_single(i));
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// Ensure +inf and -inf are tested
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UASSERT(test_single(0x7F800000UL));
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UASSERT(test_single(0xFF800000UL));
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// Test from 0x80000000UL to 0xFF800000UL (negative)
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for (i = 0x80000000UL; i <= 0xFF800000UL; i += 277)
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UASSERT(test_single(i));
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}
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const u8 TestSerialization::test_serialized_data[12 * 11 - 2] = {
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0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc,
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0xdd, 0xee, 0xff, 0x80, 0x75, 0x30, 0xff, 0xff, 0xff, 0xfa, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xd5, 0x00, 0x00, 0xd1, 0x1e, 0xee, 0x1e,
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0x5b, 0xc0, 0x80, 0x00, 0x02, 0x80, 0x7F, 0xFF, 0xFD, 0x80, 0x00, 0x07,
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0x66, 0x6f, 0x6f, 0x62, 0x61, 0x72, 0x21, 0x01, 0xf4, 0x01, 0xf4, 0x10,
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0x6f, 0x02, 0x5c, 0xff, 0xe2, 0x00, 0x00, 0x07, 0x80, 0x00, 0x00, 0x04,
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0x38, 0xff, 0xff, 0xfe, 0x70, 0x00, 0x61, 0xa8, 0x36, 0x11, 0x51, 0x70,
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0x5f, 0x00, 0x07, 0xa1, 0x20, 0x00, 0x98, 0xf5, 0x08, 0xff,
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0xfd, 0x0f, 0xe4, 0xff, 0x80, 0x32, 0x80, 0x00, 0x00, 0x00, 0x17, 0x73,
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0x6f, 0x6d, 0x65, 0x20, 0x6c, 0x6f, 0x6e, 0x67, 0x65, 0x72, 0x20, 0x73,
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0x74, 0x72, 0x69, 0x6e, 0x67, 0x20, 0x68, 0x65, 0x72, 0x65, 0xF0, 0x0D,
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};
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