ydb/library/cpp/codecs/ut/codecs_ut.cpp

#include <library/cpp/codecs/delta_codec.h>
#include <library/cpp/codecs/huffman_codec.h>
#include <library/cpp/codecs/pfor_codec.h>
#include <library/cpp/codecs/solar_codec.h>
#include <library/cpp/codecs/zstd_dict_codec.h>
#include <library/cpp/codecs/comptable_codec.h>

#include <library/cpp/testing/unittest/registar.h>

#include <util/generic/buffer.h>
#include <util/string/util.h>
#include <util/string/hex.h>
#include <library/cpp/string_utils/relaxed_escaper/relaxed_escaper.h>

namespace {
    const char* TextValues[] = {
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        "top fifty colleges",
        "wil.",
        "memphis tennessee",
        "yahoo mail",
        "corrections officer of juveniles",
        "jada pinkett smith",
        "mapquest.com",
        "apartments",
        "msn.com",
        "msn.com",
        "wasco state prison",
        "solitaire",
        "http",
        "freeport seaman center",
        "futbol soccer",
        "screen names",
        "kmov.com",
        "survey.otxresearch.com",
        "facial shaves",
        "gle",
        "flw.com",
        "seasportboats.com",
        "toysrus.com",
        "animated sexy graphics",
        "colombia",
        "unitarian univeralist association",
        "fr",
        "google video.com",
        "660-342-1072",
        "suzan-lori parks",
        "male facial",
        "william bouguereau first kiss how much it is worth",
        "streetfighter",
        "nick.com",
        "wonder woman",
        "pentagram",
        "mcafee virus protection",
        "diary",
        "037f34742140a5f761ad51d95180b4f8",
        "free porn",
        "no deposit casino bonus",
        "spongebob the movie myspace layouts",
        "on line banking",
        "equestrian properties for sale",
        "kazaa free muisc download",
        "gay truckers",
        "24",
        "pay-pal",
        "www yahoo.com",
        "phatazz.white hoes",
        "planets of the universe",
        "free movies",
        "budget rentals special",
        "yahoogames",
        "talaat pasha",
        "mariah carey song lyrics don't forget about us",
        "futbol soccer",
        "msn groups",
        "martha steward",
        "martha steward",
        "soap opera scoops cbs",
        "cingular",
        "stuwie",
        "womengiving blowjobs",
        "hear dancing queen by abba",
        "love song",
        "fhsaa.org",
        "any dvd",
        "any dvd",
        "gallery.brookeskye.com",
        "gibson ranch",
        "wachovia com",
        "kzg golf information",
        "skylight curtains",
        "c",
        "123freeweblayouts.com",
        "yahoo.com",
        "allie.com",
        "ghosts of bingham cemetery",
        "resume maker",
        "resume maker",
        "resume maker",
        "lymphomatoid papulosis",
        "sez.com",
    };
}

class TCodecsTest: public TTestBase {
    UNIT_TEST_SUITE(TCodecsTest);
    UNIT_TEST(TestPipeline)
    UNIT_TEST(TestDelta)
    UNIT_TEST(TestHuffman)
    UNIT_TEST(TestZStdDict)
    UNIT_TEST(TestCompTable)
    UNIT_TEST(TestHuffmanLearnByFreqs)
    UNIT_TEST(TestSolar)
    UNIT_TEST(TestPFor)
    UNIT_TEST(TestRegistry)

    UNIT_TEST_SUITE_END();

private:
    TString PrintError(TStringBuf learn, TStringBuf test, TStringBuf codec, ui32 i) {
        TString s;
        TStringOutput sout(s);
        sout << codec << ": " << i << ", "
             << "\n";
        sout << HexEncode(learn.data(), learn.size()); //NEscJ::EscapeJ<true>(learn, sout);
        sout << " != \n";
        sout << HexEncode(test.data(), test.size()); //NEscJ::EscapeJ<true>(test, sout);

        if (s.Size() > 1536) {
            TString res = s.substr(0, 512);
            res.append("...<skipped ").append(ToString(s.size() - 1024)).append(">...");
            res.append(s.substr(s.size() - 512));
        }

        return s;
    }

    TStringBuf AsStrBuf(const TBuffer& b) {
        return TStringBuf(b.data(), b.size());
    }

    template <typename TCodec, bool testsaveload>
    void TestCodec(const TVector<TBuffer>& inlearn = TVector<TBuffer>(), const TVector<TBuffer>& in = TVector<TBuffer>(), NCodecs::TCodecPtr c = new TCodec) {
        using namespace NCodecs;

        TBuffer buff;

        {
            TVector<TBuffer> out;

            c->Learn(inlearn.begin(), inlearn.end());

            if (testsaveload) {
                {
                    TBufferOutput bout(buff);
                    ICodec::Store(&bout, c);
                }

                {
                    TBufferInput bin(buff);
                    c = ICodec::Restore(&bin);
                    UNIT_ASSERT(c->AlreadyTrained());
                }
            }

            {
                for (ui32 i = 0; i < inlearn.size(); ++i) {
                    out.emplace_back();
                    c->Encode(AsStrBuf(inlearn[i]), out[i]);
                }

                TBuffer vecl;
                for (ui32 i = 0; i < out.size(); ++i) {
                    vecl.Clear();
                    c->Decode(AsStrBuf(out[i]), vecl);

                    UNIT_ASSERT_EQUAL_C(AsStrBuf(inlearn[i]), AsStrBuf(vecl),
                                        PrintError(TStringBuf(inlearn[i].data(), inlearn[i].size()),
                                                   TStringBuf(vecl.data(), vecl.size()), c->GetName(), i));
                }
            }
        }

        {
            if (testsaveload) {
                TBufferInput bin(buff);
                c = ICodec::Restore(&bin);
            }

            TBuffer out, in1;
            for (ui32 i = 0; i < in.size(); ++i) {
                out.Clear();
                in1.Clear();
                c->Encode(AsStrBuf(in[i]), out);
                c->Decode(AsStrBuf(out), in1);
                UNIT_ASSERT_EQUAL_C(AsStrBuf(in[i]), AsStrBuf(in1),
                                    PrintError(TStringBuf(in[i].data(), in[i].size()),
                                               TStringBuf(in1.data(), in1.size()), c->GetName(), i));
            }
        }
    }

    template <class T>
    void AppendTo(TBuffer& b, T t) {
        b.Append((char*)&t, sizeof(t));
    }

    void TestDelta() {
        using namespace NCodecs;
        TVector<TBuffer> d;

        // 1. common case
        d.emplace_back();
        AppendTo(d.back(), 1ULL);
        AppendTo(d.back(), 10ULL);
        AppendTo(d.back(), 100ULL);
        AppendTo(d.back(), 1000ULL);
        AppendTo(d.back(), 10000ULL);
        AppendTo(d.back(), 100000ULL);

        // 2. delta overflow
        d.emplace_back();
        AppendTo(d.back(), 1ULL);
        AppendTo(d.back(), 10ULL);
        AppendTo(d.back(), 100ULL);
        AppendTo(d.back(), 1000ULL);
        AppendTo(d.back(), (ui64)-100LL);
        AppendTo(d.back(), (ui64)-10ULL);

        // 3. bad sorting
        d.emplace_back();
        AppendTo(d.back(), 1ULL);
        AppendTo(d.back(), 10ULL);
        AppendTo(d.back(), 1000ULL);
        AppendTo(d.back(), 100ULL);
        AppendTo(d.back(), 10000ULL);
        AppendTo(d.back(), 100000ULL);

        // all bad
        d.emplace_back();
        AppendTo(d.back(), -1LL);
        AppendTo(d.back(), -1LL);
        AppendTo(d.back(), -1LL);
        AppendTo(d.back(), -1LL);

        TestCodec<TDeltaCodec<ui64, true>, false>(d);
        TestCodec<TDeltaCodec<ui64, false>, false>(d);
    }

    void TestPFor() {
        using namespace NCodecs;
        {
            TVector<TBuffer> d;
            d.emplace_back();
            AppendTo(d.back(), -1LL);
            AppendTo(d.back(), -1LL);
            AppendTo(d.back(), -1LL);
            AppendTo(d.back(), -1LL);
            d.emplace_back();
            AppendTo(d.back(), 0LL);
            AppendTo(d.back(), 1LL);
            AppendTo(d.back(), 2LL);
            AppendTo(d.back(), 1LL);
            AppendTo(d.back(), 0LL);
            AppendTo(d.back(), 1LL);
            AppendTo(d.back(), 2LL);
            d.emplace_back();
            AppendTo(d.back(), 0LL);
            AppendTo(d.back(), 1LL);
            AppendTo(d.back(), 2LL);
            AppendTo(d.back(), 1LL);
            AppendTo(d.back(), -1LL);
            AppendTo(d.back(), 0LL);
            AppendTo(d.back(), 1LL);
            AppendTo(d.back(), 2LL);
            d.emplace_back();
            AppendTo(d.back(), 0LL);
            AppendTo(d.back(), -1LL);
            AppendTo(d.back(), -2LL);
            AppendTo(d.back(), -1LL);
            AppendTo(d.back(), -2LL);
            AppendTo(d.back(), -1LL);
            AppendTo(d.back(), 0LL);
            AppendTo(d.back(), -1LL);
            AppendTo(d.back(), -2LL);

            TestCodec<TPForCodec<ui64>, false>(d);
            TestCodec<TPForCodec<ui64, true>, true>(d);
        }
        {
            TVector<TBuffer> d;
            d.emplace_back();
            AppendTo(d.back(), -1);
            AppendTo(d.back(), -1);
            AppendTo(d.back(), -1);
            AppendTo(d.back(), -1);
            d.emplace_back();
            AppendTo(d.back(), 0);
            AppendTo(d.back(), 1);
            AppendTo(d.back(), 2);
            AppendTo(d.back(), 1);
            AppendTo(d.back(), -1);
            AppendTo(d.back(), 0);
            AppendTo(d.back(), 1);
            AppendTo(d.back(), 2);
            d.emplace_back();
            AppendTo(d.back(), 0);
            AppendTo(d.back(), -1);
            AppendTo(d.back(), -2);
            AppendTo(d.back(), -1);
            AppendTo(d.back(), -2);
            AppendTo(d.back(), -1);
            AppendTo(d.back(), 0);
            AppendTo(d.back(), -1);
            AppendTo(d.back(), -2);

            TestCodec<TPForCodec<ui32>, false>(d);
            TestCodec<TPForCodec<ui32, true>, false>(d);
        }
        {
            TVector<TBuffer> d;
            d.emplace_back();
            for (auto& textValue : TextValues) {
                AppendTo(d.back(), (ui32)strlen(textValue));
            }

            TestCodec<TPForCodec<ui32>, false>(d);
            TestCodec<TPForCodec<ui32, true>, false>(d);
        }
        {
            TVector<TBuffer> d;
            d.emplace_back();
            for (auto& textValue : TextValues) {
                AppendTo(d.back(), (ui64)strlen(textValue));
            }

            TestCodec<TPForCodec<ui64>, false>(d);
            TestCodec<TPForCodec<ui64, true>, false>(d);
        }
    }

    template <class TCodec>
    void DoTestSimpleCodec() {
        using namespace NCodecs;
        {
            TVector<TBuffer> learn;

            for (auto& textValue : TextValues) {
                learn.emplace_back(textValue, strlen(textValue));
            }

            TestCodec<TCodec, true>(learn);
        }
        {
            TestCodec<TCodec, true>();
        }

        {
            TVector<TBuffer> learn;
            learn.emplace_back();
            learn.back().Append('a');

            TVector<TBuffer> test;
            test.emplace_back();
            for (ui32 i = 0; i < 256; ++i) {
                test.back().Append((ui8)i);
            }

            TestCodec<TCodec, true>(learn, test);
        }

        {
            TVector<TBuffer> learn;
            learn.emplace_back();
            for (ui32 i = 0; i < 256; ++i) {
                for (ui32 j = 0; j < i; ++j) {
                    learn.back().Append((ui8)i);
                }
            }

            TVector<TBuffer> test;
            test.emplace_back();
            for (ui32 i = 0; i < 256; ++i) {
                test.back().Append((ui8)i);
            }

            TestCodec<TCodec, true>(learn, test);
        }

        {
            TVector<TBuffer> learn;
            learn.emplace_back();
            for (ui32 i = 0; i < 128; ++i) {
                for (ui32 j = 0; j < i; ++j) {
                    learn.back().Append((ui8)i);
                }
            }

            TVector<TBuffer> test;
            test.emplace_back();
            for (ui32 i = 128; i < 256; ++i) {
                test.back().Append((ui8)i);
            }

            TestCodec<TCodec, true>(learn, test);
        }
    }

    void TestHuffman() {
        DoTestSimpleCodec<NCodecs::THuffmanCodec>();
    }

    void TestZStdDict() {
        using namespace NCodecs;
        {
            TVector<TBuffer> learn;

            for (auto& textValue : TextValues) {
                learn.emplace_back(textValue, strlen(textValue));
            }

            TestCodec<TZStdDictCodec, true>(learn);
        }

    }

    void TestCompTable() {
        DoTestSimpleCodec<NCodecs::TCompTableCodec>();
    }

    void TestHuffmanLearnByFreqs() {
        using namespace NCodecs;

        TVector<TBuffer> data;

        for (auto& textValue : TextValues) {
            data.emplace_back(textValue, strlen(textValue));
        }

        TVector<TBuffer> outLearn;

        {
            THuffmanCodec codec;
            static_cast<ICodec&>(codec).Learn(data.begin(), data.end());

            for (ui32 i = 0; i < data.size(); ++i) {
                outLearn.emplace_back();
                codec.Encode(AsStrBuf(data[i]), outLearn[i]);
            }
        }

        TVector<TBuffer> outLearnByFreqs;

        {
            THuffmanCodec codec;
            std::pair<char, ui64> freqs[256];

            for (size_t i = 0; i < Y_ARRAY_SIZE(freqs); ++i) {
                freqs[i].first = (char)i;
                freqs[i].second = 0;
            }

            for (auto& textValue : TextValues) {
                size_t len = strlen(textValue);
                for (size_t j = 0; j < len; ++j) {
                    ++freqs[(ui32)(0xFF & textValue[j])].second;
                }
            }

            codec.LearnByFreqs(TArrayRef<std::pair<char, ui64>>(freqs, Y_ARRAY_SIZE(freqs)));

            for (ui32 i = 0; i < data.size(); ++i) {
                outLearnByFreqs.emplace_back();
                codec.Encode(AsStrBuf(data[i]), outLearnByFreqs[i]);
            }
        }

        UNIT_ASSERT_EQUAL(outLearn.size(), outLearnByFreqs.size());
        const size_t sz = outLearn.size();
        for (size_t n = 0; n < sz; ++n) {
            UNIT_ASSERT_EQUAL(AsStrBuf(outLearn[n]), AsStrBuf(outLearnByFreqs[n]));
        }
    }

    void TestSolar() {
        using namespace NCodecs;
        {
            TVector<TBuffer> learn;

            for (auto& textValue : TextValues) {
                learn.emplace_back(textValue, strlen(textValue));
            }

            TestCodec<TSolarCodec, true>(learn, TVector<TBuffer>(), new TSolarCodec(512, 8));
            TestCodec<TAdaptiveSolarCodec, false>(learn, TVector<TBuffer>(), new TAdaptiveSolarCodec(512, 8));
            TestCodec<TAdaptiveSolarCodec, true>(learn, TVector<TBuffer>(), new TAdaptiveSolarCodec(512, 8));
            TestCodec<TSolarCodecShortInt, true>(learn, TVector<TBuffer>(), new TSolarCodecShortInt(512, 8));
        }
        {
            TestCodec<TSolarCodec, true>(TVector<TBuffer>(), TVector<TBuffer>(), new TSolarCodec(512, 8));
            TestCodec<TAdaptiveSolarCodec, false>(TVector<TBuffer>(), TVector<TBuffer>(), new TAdaptiveSolarCodec(512, 8));
            TestCodec<TAdaptiveSolarCodec, true>(TVector<TBuffer>(), TVector<TBuffer>(), new TAdaptiveSolarCodec(512, 8));
            TestCodec<TSolarCodecShortInt, true>(TVector<TBuffer>(), TVector<TBuffer>(), new TSolarCodecShortInt(512, 8));
        }

        {
            TVector<TBuffer> learn;
            learn.emplace_back();
            learn.back().Append('a');

            TVector<TBuffer> test;
            test.emplace_back();
            for (ui32 i = 0; i < 256; ++i) {
                test.back().Append((ui8)i);
            }

            TestCodec<TSolarCodec, true>(learn, test, new TSolarCodec(512, 8));
            TestCodec<TAdaptiveSolarCodec, false>(learn, test, new TAdaptiveSolarCodec(512, 8));
            TestCodec<TAdaptiveSolarCodec, true>(learn, test, new TAdaptiveSolarCodec(512, 8));
            TestCodec<TSolarCodecShortInt, true>(learn, test, new TSolarCodecShortInt(512, 8));
        }

        {
            TVector<TBuffer> learn;
            learn.emplace_back();
            for (ui32 i = 0; i < 256; ++i) {
                for (ui32 j = 0; j < i; ++j) {
                    learn.back().Append((ui8)i);
                }
            }

            TVector<TBuffer> test;
            test.emplace_back();
            for (ui32 i = 0; i < 256; ++i) {
                test.back().Append((ui8)i);
            }

            TestCodec<TSolarCodec, true>(learn, test, new TSolarCodec(512, 8));
            TestCodec<TAdaptiveSolarCodec, false>(learn, test, new TAdaptiveSolarCodec(512, 8));
            TestCodec<TAdaptiveSolarCodec, true>(learn, test, new TAdaptiveSolarCodec(512, 8));
            TestCodec<TSolarCodecShortInt, true>(learn, test, new TSolarCodecShortInt(512, 8));
        }
    }

    void TestPipeline() {
        using namespace NCodecs;
        {
            TVector<TBuffer> learn;
            learn.emplace_back();
            for (ui32 i = 0; i < 256; ++i) {
                for (i32 j = i; j >= 0; --j) {
                    learn.back().Append((ui8)j);
                }
            }

            TVector<TBuffer> test;
            test.emplace_back();
            for (ui32 i = 0; i < 256; ++i) {
                test.back().Append((ui8)i);
            }

            TestCodec<TPipelineCodec, true>(learn, test,
                                            new TPipelineCodec(new TSolarCodec(512, 8), new TSolarCodec(512, 8), new THuffmanCodec));
        }
        {
            TVector<TBuffer> d;
            d.emplace_back();
            for (ui32 i = 0; i < 256; ++i) {
                for (i32 j = i; j >= 0; --j) {
                    d.back().Append(i * i);
                }
            }

            TestCodec<TPipelineCodec, false>(d, TVector<TBuffer>(),
                                             new TPipelineCodec(new TDeltaCodec<ui32, false>, new TPForCodec<ui32>));
        }
    }

    void TestRegistry() {
        using namespace NCodecs;
        TVector<TString> vs = ICodec::GetCodecsList();
        for (const auto& v : vs) {
            TCodecPtr p = ICodec::GetInstance(v);
            if (v == "none") {
                UNIT_ASSERT(!p);
                continue;
            }
            UNIT_ASSERT_C(!!p, v);
            UNIT_ASSERT_C(TStringBuf(v).Head(3) == TStringBuf(p->GetName()).Head(3), v + " " + p->GetName());
        }
    }
};

UNIT_TEST_SUITE_REGISTRATION(TCodecsTest)