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Fixed TransportCRC compatibility with CRC-16-CCITT

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Pavel Kirienko
2014-02-26 09:45:06 +04:00
parent a6ab9c416f
commit 887ee64d54
3 changed files with 39 additions and 26 deletions
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libuavcan/test/transport/crc.cpp
+15 -6
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@@ -2,25 +2,34 @@
* Copyright (C) 2014 Pavel Kirienko <pavel.kirienko@gmail.com>
*/
#include <algorithm>
#include <gtest/gtest.h>
#include <uavcan/internal/transport/crc.hpp>
/*
import crcmod
crc = crcmod.predefined.Crc('crc-ccitt-false')
crc.update('123')
crc.hexdigest()
'5BCE'
crc.update('456789')
crc.hexdigest()
'29B1'
*/
TEST(TransportCRC, Correctness)
{
uavcan::TransportCRC crc;
ASSERT_EQ(0x0000, crc.get());
ASSERT_EQ(0xFFFF, crc.get());
crc.add('1');
crc.add('2');
crc.add('3');
ASSERT_EQ(38738, crc.get());
ASSERT_EQ(0x5BCE, crc.get());
crc.add(reinterpret_cast<const uint8_t*>("Foobar"), 6);
ASSERT_EQ(53881, crc.get());
crc.add(reinterpret_cast<const uint8_t*>("456789"), 6);
ASSERT_EQ(0x29B1, crc.get());
// Initializing constructor
ASSERT_EQ(crc.get(), uavcan::TransportCRC(reinterpret_cast<const uint8_t*>("123Foobar"), 9).get());
ASSERT_EQ(crc.get(), uavcan::TransportCRC(reinterpret_cast<const uint8_t*>("123456789"), 9).get());
}