132 lines
3.8 KiB
C++
132 lines
3.8 KiB
C++
#include "../conversion/binaryconversion.h"
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#include <cppunit/extensions/HelperMacros.h>
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#include <cppunit/TestFixture.h>
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#include <random>
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#include <sstream>
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#include <functional>
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using namespace std;
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using namespace ConversionUtilities;
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using namespace CPPUNIT_NS;
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class ConversionTests : public TestFixture
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{
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CPPUNIT_TEST_SUITE(ConversionTests);
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CPPUNIT_TEST(testEndianness);
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CPPUNIT_TEST(testBinaryConversions);
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CPPUNIT_TEST_SUITE_END();
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public:
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ConversionTests();
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void setUp() {}
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void tearDown() {}
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void testEndianness();
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void testBinaryConversions();
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private:
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template<typename intType>
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void testConversion(const char *message, function<void (intType, char *)> vice, function<intType (const char *)> verca, intType min, intType max);
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char m_buff[8];
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random_device m_randomDevice;
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mt19937 m_randomEngine;
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};
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CPPUNIT_TEST_SUITE_REGISTRATION(ConversionTests);
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ConversionTests::ConversionTests() :
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m_randomDevice(),
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m_randomEngine(m_randomDevice())
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{}
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/*!
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* \brief Tests whether macros for endianness are correct.
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*/
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void ConversionTests::testEndianness()
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{
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union {
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uint32_t integer;
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char characters[4];
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} test = {0x01020304};
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#if defined(CONVERSION_UTILITIES_BYTE_ORDER_BIG_ENDIAN)
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CPPUNIT_ASSERT_MESSAGE("Byte order assumption (big-endian) is wrong", test.characters[0] == 0x01);
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#elif defined(CONVERSION_UTILITIES_BYTE_ORDER_LITTLE_ENDIAN)
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CPPUNIT_ASSERT_MESSAGE("Byte order assumption (little-endian) is wrong", test.characters[0] == 0x04);
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#else
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CPPUNIT_FAIL("There is not valid byte order assumption");
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#endif
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}
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template<typename intType>
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void ConversionTests::testConversion(const char *message, function<void (intType, char *)> vice, function<intType (const char *)> versa, intType min, intType max)
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{
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const intType random = uniform_int_distribution<intType>(min, max)(m_randomEngine);
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stringstream msg;
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msg << message << '(' << hex << '0' << 'x' << random << ')';
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vice(random, m_buff);
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const intType result = versa(m_buff);
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CPPUNIT_ASSERT_MESSAGE(msg.str(), result == random);
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}
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#define TEST_TYPE(endianness, function) \
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decltype(endianness::function(m_buff))
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#define TEST_CONVERSION(function, endianness) \
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testConversion<TEST_TYPE(endianness, function)>( \
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"testing " #function, \
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static_cast<void(*)(TEST_TYPE(endianness, function), char *)>(&endianness::getBytes), \
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endianness::function, \
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numeric_limits<TEST_TYPE(endianness, function)>::min(), \
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numeric_limits<TEST_TYPE(endianness, function)>::max() \
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)
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#define TEST_BE_CONVERSION(function) \
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TEST_CONVERSION( \
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function, BE \
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)
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#define TEST_LE_CONVERSION(function) \
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TEST_CONVERSION( \
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function, LE \
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)
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#define TEST_CUSTOM_CONVERSION(vice, versa, endianness, min, max) \
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testConversion<TEST_TYPE(endianness, versa)>( \
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"testing " #versa, \
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static_cast<void(*)(TEST_TYPE(endianness, versa), char *)>(&endianness::vice), \
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endianness::versa, \
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min, max \
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)
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/*!
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* \brief Tests some binary conversions.
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*
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* Tests toUInt16(), ... toUInt64(), toInt16(), ... toInt64() and
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* the inverse getBytes() functions.
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*/
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void ConversionTests::testBinaryConversions()
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{
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for(byte b = 0; b < 100; ++b) {
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TEST_BE_CONVERSION(toUInt16);
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TEST_CUSTOM_CONVERSION(getBytes24, toUInt24, BE, 0, 0xFFFFFF);
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TEST_BE_CONVERSION(toUInt32);
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TEST_BE_CONVERSION(toUInt64);
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TEST_LE_CONVERSION(toUInt16);
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TEST_CUSTOM_CONVERSION(getBytes24, toUInt24, LE, 0, 0xFFFFFF);
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TEST_LE_CONVERSION(toUInt32);
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TEST_LE_CONVERSION(toUInt64);
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TEST_BE_CONVERSION(toInt16);
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TEST_BE_CONVERSION(toInt32);
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TEST_BE_CONVERSION(toInt64);
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TEST_LE_CONVERSION(toInt16);
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TEST_LE_CONVERSION(toInt32);
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TEST_LE_CONVERSION(toInt64);
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}
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}
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