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#include "lzma.h"
#include <library/cpp/testing/unittest/registar.h>
#include <util/stream/mem.h>
#include <util/random/fast.h>
#include <util/random/random.h>
class TStrokaByOneByte: public IZeroCopyInput {
public:
TStrokaByOneByte(const TString& s)
: Data(s)
, Pos(s.data())
{
}
private:
size_t DoNext(const void** ptr, size_t len) override {
if (Pos < Data.end()) {
len = Min(len, static_cast<size_t>(1));
*ptr = Pos;
Pos += len;
return len;
} else {
return 0;
}
}
TString Data;
const char* Pos;
};
class TLzmaTest: public TTestBase {
UNIT_TEST_SUITE(TLzmaTest);
UNIT_TEST(Test1)
UNIT_TEST(Test2)
UNIT_TEST_SUITE_END();
private:
inline TString GenData() {
TString data;
TReallyFastRng32 rnd(RandomNumber<ui64>());
for (size_t i = 0; i < 50000; ++i) {
const char ch = rnd.Uniform(256);
const size_t len = 1 + rnd.Uniform(10);
data += TString(len, ch);
}
return data;
}
inline void Test2() {
class TExcOutput: public IOutputStream {
public:
~TExcOutput() override {
}
void DoWrite(const void*, size_t) override {
throw 12345;
}
};
TString data(GenData());
TMemoryInput mi(data.data(), data.size());
TExcOutput out;
try {
TLzmaCompress c(&out);
TransferData(&mi, &c);
} catch (int i) {
UNIT_ASSERT_EQUAL(i, 12345);
}
}
inline void Test1() {
TString data(GenData());
TString data1;
TString res;
{
TMemoryInput mi(data.data(), data.size());
TStringOutput so(res);
TLzmaCompress c(&so);
TransferData(&mi, &c);
c.Finish();
}
{
TMemoryInput mi(res.data(), res.size());
TStringOutput so(data1);
TLzmaDecompress d((IInputStream*)&mi);
TransferData(&d, &so);
}
UNIT_ASSERT_EQUAL(data, data1);
data1.clear();
{
TMemoryInput mi(res.data(), res.size());
TStringOutput so(data1);
TLzmaDecompress d(&mi);
TransferData(&d, &so);
}
UNIT_ASSERT_EQUAL(data, data1);
data1.clear();
{
TStrokaByOneByte mi(res);
TStringOutput so(data1);
TLzmaDecompress d(&mi);
TransferData(&d, &so);
}
UNIT_ASSERT_EQUAL(data, data1);
}
};
UNIT_TEST_SUITE_REGISTRATION(TLzmaTest);
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