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/*************************************************************************
** CRC32Test.cpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2017 Martin Gieseking <martin.gieseking@uos.de> **
** **
** 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, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#include <gtest/gtest.h>
#include <string>
#include "CRC32.hpp"
using namespace std;
TEST(CRC32Test, init) {
CRC32 crc;
EXPECT_EQ(crc.get(), 0);
crc.reset();
EXPECT_EQ(crc.get(), 0);
}
TEST(CRC32Test, update_numbers) {
CRC32 crc;
const uint32_t comp[]={0xf8923be6, 0x4dcd2866, 0x4fdbb57a, 0xcb40f3bf, 0xf1a33887, 0x3422c816, 0x3a8b92a4, 0xedafc4ce, 0x4f5d17ec, 0x4a9f2f68};
for (int i=-5; i < 5; ++i) {
crc.update(i);
EXPECT_EQ(crc.get(), comp[i+5]);
}
crc.reset();
EXPECT_EQ(crc.get(), 0);
// add 32 bit values
for (int i=0; i < 256; ++i)
crc.update(i);
EXPECT_EQ(crc.get(), 0xd4c2968b);
for (int i=256; i < 10000; ++i)
crc.update(i);
EXPECT_EQ(crc.get(), 0x6de9e841);
}
TEST(CRC32Test, update_array) {
CRC32 crc;
uint8_t vals[256];
// add 8 bit values
for (int i=0; i < 256; ++i)
vals[i] = i;
crc.update(vals, 256);
EXPECT_EQ(crc.get(), 0x29058c73);
}
TEST(CRC32Test, update_string) {
CRC32 crc;
crc.update("dvisvgm converts DVI files to SVG.");
EXPECT_EQ(crc.get(), 0x7c4ef359);
crc.update("It is published under the GNU General Public License.");
EXPECT_EQ(crc.get(), 0xa732081b);
}
TEST(CRC32Test, compute) {
EXPECT_EQ(CRC32::compute("dvisvgm converts DVI files to SVG."), 0x7c4ef359);
istringstream iss;
iss.str("It is published under the GNU General Public License.");
EXPECT_EQ(CRC32::compute(iss), 0xbc02ba40);
}
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