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/*
* Copyright (C) 2013 Felix Geyer <debfx@fobos.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 2 or (at your option)
* version 3 of the License.
*
* 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 "TestRandom.h"
#include "TestGlobal.h"
#include "core/Endian.h"
#include "core/Global.h"
QTEST_GUILESS_MAIN(TestRandom)
void TestRandom::initTestCase()
{
m_backend = new RandomBackendTest();
Random::createWithBackend(m_backend);
}
void TestRandom::testUInt()
{
QByteArray nextBytes;
nextBytes = Endian::sizedIntToBytes(42, QSysInfo::ByteOrder);
m_backend->setNextBytes(nextBytes);
QCOMPARE(randomGen()->randomUInt(100), 42U);
nextBytes = Endian::sizedIntToBytes(117, QSysInfo::ByteOrder);
m_backend->setNextBytes(nextBytes);
QCOMPARE(randomGen()->randomUInt(100), 17U);
nextBytes = Endian::sizedIntToBytes(1001, QSysInfo::ByteOrder);
m_backend->setNextBytes(nextBytes);
QCOMPARE(randomGen()->randomUInt(1), 0U);
nextBytes.clear();
nextBytes.append(Endian::sizedIntToBytes(QUINT32_MAX, QSysInfo::ByteOrder));
nextBytes.append(Endian::sizedIntToBytes(QUINT32_MAX - 70000U, QSysInfo::ByteOrder));
m_backend->setNextBytes(nextBytes);
QCOMPARE(randomGen()->randomUInt(100000U), (QUINT32_MAX - 70000U) % 100000U);
nextBytes.clear();
for (int i = 0; i < 10000; i++) {
nextBytes.append(Endian::sizedIntToBytes((QUINT32_MAX / 2U) + 1U + i, QSysInfo::ByteOrder));
}
nextBytes.append(Endian::sizedIntToBytes(QUINT32_MAX / 2U, QSysInfo::ByteOrder));
m_backend->setNextBytes(nextBytes);
QCOMPARE(randomGen()->randomUInt((QUINT32_MAX / 2U) + 1U), QUINT32_MAX / 2U);
}
void TestRandom::testUIntRange()
{
QByteArray nextBytes;
nextBytes = Endian::sizedIntToBytes(42, QSysInfo::ByteOrder);
m_backend->setNextBytes(nextBytes);
QCOMPARE(randomGen()->randomUIntRange(100, 200), 142U);
}
RandomBackendTest::RandomBackendTest()
: m_bytesIndex(0)
{
}
void RandomBackendTest::randomize(void* data, int len)
{
QVERIFY(len <= (m_nextBytes.size() - m_bytesIndex));
char* charData = reinterpret_cast<char*>(data);
for (int i = 0; i < len; i++) {
charData[i] = m_nextBytes[m_bytesIndex + i];
}
m_bytesIndex += len;
}
void RandomBackendTest::setNextBytes(const QByteArray& nextBytes)
{
m_nextBytes = nextBytes;
m_bytesIndex = 0;
}
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