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#include "packed.h"
#include <library/cpp/testing/unittest/registar.h>
#include <util/system/defaults.h>
#include <util/generic/ylimits.h>
#include <util/generic/buffer.h>
#include <util/stream/mem.h>
#include <util/stream/buffer.h>
namespace NPrivate {
#if 0
static ui64 gSeed = 42;
template<typename T>
static T PseudoRandom(T max = Max<T>()) {
Y_ASSERT(max != 0);
// stupid and non-threadsafe, but very predictable chaos generator
gSeed += 1;
gSeed *= 419;
gSeed = gSeed ^ (ui64(max) << 17u);
return gSeed % max;
};
#endif
}
Y_UNIT_TEST_SUITE(TPackedTest) {
void TestPackUi32Sub(ui32 v, const TVector<char>& p) {
TBufferOutput out;
PackUI32(out, v);
const TBuffer& buf = out.Buffer();
UNIT_ASSERT_VALUES_EQUAL(buf.Size(), p.size());
UNIT_ASSERT(!memcmp(buf.Data(), &p[0], buf.Size()));
{
TBufferInput in(buf);
ui32 v2;
UnPackUI32(in, v2);
UNIT_ASSERT_VALUES_EQUAL(v, v2);
}
{
TZCMemoryInput in(buf.Data(), buf.Size());
ui32 v2;
UnPackUI32(in, v2);
UNIT_ASSERT_VALUES_EQUAL(v, v2);
}
}
Y_UNIT_TEST(TestPackUi32) {
ui32 v;
TVector<char> pv;
v = 0;
pv.resize(1);
pv[0] = 0x0;
TestPackUi32Sub(v, pv);
v = 0x1600;
pv.resize(2);
pv[0] = 0x96;
pv[1] = 0x00;
TestPackUi32Sub(v, pv);
v = 0xEF98;
pv.resize(3);
pv[0] = 0xC0;
#if defined(_big_endian_)
pv[1] = 0xEF;
pv[2] = 0x98;
#elif defined(_little_endian_)
pv[1] = 0x98;
pv[2] = 0xEF;
#endif
TestPackUi32Sub(v, pv);
v = 0xF567FE4;
pv.resize(4);
pv[0] = 0xEF;
pv[1] = 0x56;
#if defined(_big_endian_)
pv[2] = 0x7F;
pv[3] = 0xE4;
#elif defined(_little_endian_)
pv[2] = 0xE4;
pv[3] = 0x7F;
#endif
TestPackUi32Sub(v, pv);
}
#if 0
Y_UNIT_TEST(ReadWrite32) {
TBuffer buffer(65536);
char* writePtr = buffer.Data();
TVector<ui32> correctNumbers;
for (size_t i = 0; i < 1000; ++i) {
ui32 randNum = NPrivate::PseudoRandom<ui32>();
correctNumbers.push_back(randNum);
writePtr = Pack32(randNum, writePtr);
}
const char* readPtr = buffer.Data();
for (size_t i = 0; i < correctNumbers.size(); ++i) {
ui32 value = 0xCCCCCCCC;
readPtr = Unpack32(value, readPtr);
UNIT_ASSERT_VALUES_EQUAL(value, correctNumbers[i]);
}
}
Y_UNIT_TEST(ReadWrite64) {
TBuffer buffer(65536);
char* writePtr = buffer.Data();
TVector<ui64> correctNumbers;
for (size_t i = 0; i < 1000; ++i) {
ui64 randNum = NPrivate::PseudoRandom<ui64>();
correctNumbers.push_back(randNum);
writePtr = Pack64(randNum, writePtr);
}
const char* readPtr = buffer.Data();
for (size_t i = 0; i < correctNumbers.size(); ++i) {
ui64 value = 0xDEADBEEF;
readPtr = Unpack64(value, readPtr);
UNIT_ASSERT_VALUES_EQUAL(value, correctNumbers[i]);
}
}
#endif
}
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