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path: root/library/cpp/scheme/tests/fuzz_ops/ut/vm_parse_ut.cpp
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#include <library/cpp/scheme/tests/fuzz_ops/lib/vm_parse.h>
#include <library/cpp/testing/unittest/registar.h>
 
Y_UNIT_TEST_SUITE(TestParseNextAction) { 
    using namespace NSc::NUt; 
 
    Y_UNIT_TEST(TestWidth) { 
        UNIT_ASSERT_VALUES_EQUAL(GetCountWidth(TIdx::ValueCount), 2); 
        UNIT_ASSERT_VALUES_EQUAL(GetCountWidth(TPos::ValueCount), 4); 
        UNIT_ASSERT_VALUES_EQUAL(GetCountWidth(TRef::TypeCount), 2); 
        UNIT_ASSERT_VALUES_EQUAL(GetCountWidth(TSrc::TypeCount), 2); 
        UNIT_ASSERT_VALUES_EQUAL(GetCountWidth(TDst::TypeCount), 4); 
        UNIT_ASSERT_VALUES_EQUAL(GetCountWidth(TPath::MaxLength), 5); 
        UNIT_ASSERT_VALUES_EQUAL(GetCountWidth(TVMAction::TypeCount), 6); 
    } 
 
    Y_UNIT_TEST(TestParseIdx) { 
        { 
            TVMState st{"", 1, 0}; 
            UNIT_ASSERT(!ParseIdx(st)); 
        } 
        { 
            TVMState st{"\x03", 1, 0}; 
            auto idx = ParseIdx(st); 
            UNIT_ASSERT(idx); 
            UNIT_ASSERT_VALUES_EQUAL(idx->Idx, 3); 
        } 
    } 
 
    void DoTestParsePosFailure(const TStringBuf inp, const ui32 memSz, const ui32 curPos) { 
        TVMState st{inp, memSz, curPos}; 
        UNIT_ASSERT(!ParsePos(st)); 
    } 
 
    [[nodiscard]]
    ui32 DoTestParsePosSuccess(TVMState& st) { 
        const auto pos = ParsePos(st); 
        UNIT_ASSERT(pos); 
        return pos->Pos; 
    } 
 
    [[nodiscard]]
    ui32 DoTestParsePosSuccess(const TStringBuf inp, const ui32 memSz, const ui32 curPos) { 
        TVMState st{inp, memSz, curPos}; 
        return DoTestParsePosSuccess(st); 
    } 
 
    Y_UNIT_TEST(TestParsePos) { 
        DoTestParsePosFailure("", 1, 0); 
 
        UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(TStringBuf("\x00"sv), 1, 0), 0);
        UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(TStringBuf("\x01"sv), 1, 0), 0);
 
        DoTestParsePosFailure(TStringBuf("\x02"sv), 1, 0);
        DoTestParsePosFailure(TStringBuf("\x03"sv), 2, 0);
 
        UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(TStringBuf("\x02"sv), 2, 0), 1);
        UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(TStringBuf("\x03"sv), 2, 1), 0);
 
        UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(TStringBuf("\x0E"sv), 8, 0), 7);
        UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(TStringBuf("\x0F"sv), 8, 7), 0);
 
        { 
            TVMState st{TStringBuf("\xDE\x7B"), 16, 0};
            UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(st), 15); 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(st), 15); 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(st), 15); 
            UNIT_ASSERT(!ParsePos(st)); 
        } 
        { 
            TVMState st{TStringBuf("\xFF\x7F"), 16, 15};
            UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(st), 0); 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(st), 0); 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParsePosSuccess(st), 0); 
            UNIT_ASSERT(!ParsePos(st)); 
        } 
    } 
 
    void DoTestParseRefFailure(const TStringBuf inp, const ui32 memSz, const ui32 curPos) { 
        TVMState st{inp, memSz, curPos}; 
        UNIT_ASSERT(!ParseRef(st)); 
    } 
 
    [[nodiscard]]
    auto DoTestParseRefSuccess(TVMState& st) { 
        const auto ref = ParseRef(st); 
        UNIT_ASSERT(ref); 
        return std::make_pair(ref->Pos, ref->Type); 
    } 
 
    [[nodiscard]]
    auto DoTestParseRefSuccess(const TStringBuf inp, const ui32 memSz, const ui32 curPos) { 
        TVMState st{inp, memSz, curPos}; 
        return DoTestParseRefSuccess(st); 
    } 
 
    Y_UNIT_TEST(TestParseRef) { 
        DoTestParseRefFailure("", 1, 0); 
 
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseRefSuccess(TStringBuf("\x00"sv), 1, 0), std::make_pair((ui32)-1, TRef::T_CREATE_FRONT));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseRefSuccess(TStringBuf("\x01"sv), 1, 0), std::make_pair((ui32)-1, TRef::T_CREATE_BACK));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseRefSuccess(TStringBuf("\x0A"sv), 2, 0), std::make_pair(1u, TRef::T_REF__POS));
 
        DoTestParseRefFailure(TStringBuf("\x12"), 1, 0);
        DoTestParseRefFailure(TStringBuf("\x03"sv), 1, 0);
 
        { 
            TVMState st{TStringBuf("\x7A\x7D"), 16, 0};
            UNIT_ASSERT_VALUES_EQUAL(DoTestParseRefSuccess(st), std::make_pair(15u, TRef::T_REF__POS)); 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParseRefSuccess(st), std::make_pair(15u, TRef::T_REF__POS)); 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParseRefSuccess(st), std::make_pair((ui32)-1, TRef::T_CREATE_BACK)); 
            UNIT_ASSERT(!ParseRef(st)); 
        } 
    } 
 
    void DoTestParseSrcFailure(const TStringBuf inp, const ui32 memSz, const ui32 curPos) { 
        TVMState st{inp, memSz, curPos}; 
        UNIT_ASSERT(!ParseSrc(st)); 
    } 
 
    [[nodiscard]]
    auto DoTestParseSrcSuccess(TVMState& st) { 
        const auto src = ParseSrc(st); 
        UNIT_ASSERT(src); 
        return std::make_pair(src->Pos, src->Type); 
    } 
 
    [[nodiscard]]
    auto DoTestParseSrcSuccess(const TStringBuf inp, const ui32 memSz, const ui32 curPos) { 
        TVMState st{inp, memSz, curPos}; 
        return DoTestParseSrcSuccess(st); 
    } 
 
    Y_UNIT_TEST(TestParseSrc) { 
        DoTestParseSrcFailure("", 1, 0); 
 
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseSrcSuccess(TStringBuf("\x08"sv), 2, 0), std::make_pair(1u, TSrc::T_LREF__POS));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseSrcSuccess(TStringBuf("\x09"sv), 2, 0), std::make_pair(1u, TSrc::T_CREF__POS));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseSrcSuccess(TStringBuf("\x0A"sv), 2, 0), std::make_pair(1u, TSrc::T_RREF__POS));
 
        DoTestParseSrcFailure(TStringBuf("\x03"sv), 1, 0);
 
        { 
            TVMState st{TStringBuf("\x7A\x7D"), 16, 0};
            UNIT_ASSERT_VALUES_EQUAL(DoTestParseSrcSuccess(st), std::make_pair(15u, TSrc::T_RREF__POS)); 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParseSrcSuccess(st), std::make_pair(15u, TSrc::T_RREF__POS)); 
            UNIT_ASSERT(!ParseSrc(st)); 
        } 
    } 
 
    void DoTestParseDstFailure(const TStringBuf inp, const ui32 memSz, const ui32 curPos) { 
        TVMState st{inp, memSz, curPos}; 
        UNIT_ASSERT(!ParseDst(st)); 
    } 
 
    [[nodiscard]]
    auto DoTestParseDstSuccess(TVMState& st) { 
        const auto dst = ParseDst(st); 
        UNIT_ASSERT(dst); 
        return std::make_pair(dst->Pos, dst->Type); 
    } 
 
    [[nodiscard]]
    auto DoTestParseDstSuccess(const TStringBuf inp, const ui32 memSz, const ui32 curPos) { 
        TVMState st{inp, memSz, curPos}; 
        return DoTestParseDstSuccess(st); 
    } 
 
    Y_UNIT_TEST(TestParseDst) { 
        DoTestParseDstFailure("", 1, 0); 
 
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(TStringBuf("\x00"sv), 1, 0), std::make_pair((ui32)-1, TDst::T_CREATE_FRONT_LREF));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(TStringBuf("\x01"sv), 1, 0), std::make_pair((ui32)-1, TDst::T_CREATE_FRONT_CREF));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(TStringBuf("\x02"sv), 1, 0), std::make_pair((ui32)-1, TDst::T_CREATE_FRONT_RREF));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(TStringBuf("\x03"sv), 1, 0), std::make_pair((ui32)-1, TDst::T_CREATE_BACK_LREF));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(TStringBuf("\x04"sv), 1, 0), std::make_pair((ui32)-1, TDst::T_CREATE_BACK_CREF));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(TStringBuf("\x05"sv), 1, 0), std::make_pair((ui32)-1, TDst::T_CREATE_BACK_RREF));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(TStringBuf("\x26\x00"sv), 2, 0), std::make_pair(1u, TDst::T_LREF__POS));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(TStringBuf("\x27\x00"sv), 2, 0), std::make_pair(1u, TDst::T_CREF__POS));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(TStringBuf("\x28\x00"sv), 2, 0), std::make_pair(1u, TDst::T_RREF__POS));
 
        DoTestParseDstFailure(TStringBuf("\x06"sv), 1, 0);
        DoTestParseDstFailure(TStringBuf("\x09\x00"sv), 1, 0);
 
        { 
            TVMState st{TStringBuf("\x14\xE7\x09"sv), 16, 0};
            // 4=4 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(st), std::make_pair((ui32)-1, TDst::T_CREATE_BACK_CREF)); 
            // 4=8 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(st), std::make_pair((ui32)-1, TDst::T_CREATE_FRONT_CREF)); 
            // 4+1+4=17 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(st), std::make_pair(15u, TDst::T_CREF__POS)); 
            // 4=21 
            UNIT_ASSERT_VALUES_EQUAL(DoTestParseDstSuccess(st), std::make_pair((ui32)-1, TDst::T_CREATE_BACK_CREF)); 
            UNIT_ASSERT(!ParseDst(st)); 
        } 
    } 
 
    void DoTestParsePathFailure(const TStringBuf inp, const ui32 memSz, const ui32 curPos) { 
        TVMState st{inp, memSz, curPos}; 
        UNIT_ASSERT(!ParsePath(st)); 
    } 
 
    [[nodiscard]]
    auto DoTestParsePathSuccess(TVMState& st) { 
        const auto path = ParsePath(st); 
        UNIT_ASSERT(path); 
        return path->Path; 
    } 
 
    [[nodiscard]]
    auto DoTestParsePathSuccess(const TStringBuf inp, const ui32 memSz, const ui32 curPos) { 
        TVMState st{inp, memSz, curPos}; 
        return DoTestParsePathSuccess(st); 
    } 
 
    Y_UNIT_TEST(TestParsePath) { 
        DoTestParsePathFailure("", 1, 0); 
 
        UNIT_ASSERT_VALUES_EQUAL(DoTestParsePathSuccess(TStringBuf("\x00"sv), 1, 0), TStringBuf(""));
        UNIT_ASSERT_VALUES_EQUAL(DoTestParsePathSuccess(TStringBuf("\x21\x0C"sv), 1, 0), TStringBuf("a"));
 
        DoTestParsePathFailure("\x22\x0C", 1, 0); 
    } 
};