//
//  Copyright (c) 2018-2024 Greg Landrum and other RDKit contributors
//
//   @@ All Rights Reserved @@
//  This file is part of the RDKit.
//  The contents are covered by the terms of the BSD license
//  which is included in the file license.txt, found at the root
//  of the RDKit source tree.
///
#include <catch2/catch_all.hpp>

#include <GraphMol/RDKitBase.h>
#include <GraphMol/QueryOps.h>
#include <GraphMol/QueryAtom.h>
#include <GraphMol/MonomerInfo.h>
#include <GraphMol/FileParsers/FileParsers.h>
#include <GraphMol/FileParsers/MolSupplier.h>
#include <GraphMol/SmilesParse/SmilesParse.h>
#include <GraphMol/SmilesParse/SmilesWrite.h>
#include <GraphMol/SmilesParse/SmartsWrite.h>
#include <GraphMol/FileParsers/SequenceParsers.h>
#include <GraphMol/ChemReactions/Reaction.h>
#include <GraphMol/ChemReactions/ReactionParser.h>
#include <GraphMol/ChemReactions/ReactionRunner.h>
#include <GraphMol/ChemReactions/ReactionUtils.h>
#include <GraphMol/ChemReactions/ReactionPickler.h>
#include <GraphMol/ChemReactions/SanitizeRxn.h>
#include <GraphMol/ChemReactions/ReactionFingerprints.h>
#include <GraphMol/FileParsers/PNGParser.h>
#include <GraphMol/FileParsers/FileParserUtils.h>

using namespace RDKit;
using std::unique_ptr;

TEST_CASE("Github #1632", "[Reaction][PDB][bug]") {
  SECTION("basics") {
    bool sanitize = true;
    int flavor = 0;
    std::unique_ptr<RWMol> mol(SequenceToMol("K", sanitize, flavor));
    REQUIRE(mol);
    REQUIRE(mol->getAtomWithIdx(0)->getMonomerInfo());
    auto res = static_cast<AtomPDBResidueInfo *>(
        mol->getAtomWithIdx(0)->getMonomerInfo());
    CHECK(res->getResidueNumber() == 1);
    std::unique_ptr<ChemicalReaction> rxn(RxnSmartsToChemicalReaction(
        "[O:1]=[CX3:2]-[CX4:3]-[NX3:4]>>[O:1]=[CX3:2]-[CX4:3]-[NX3:4]-[C]"));
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    MOL_SPTR_VECT reacts;
    reacts.push_back(ROMOL_SPTR(new ROMol(*mol)));
    auto prods = rxn->runReactants(reacts);
    CHECK(prods.size() == 1);
    CHECK(prods[0].size() == 1);
    auto p = prods[0][0];
    CHECK(p->getNumAtoms() == mol->getNumAtoms() + 1);
    REQUIRE(p->getAtomWithIdx(0)->getMonomerInfo());
    auto pres = static_cast<AtomPDBResidueInfo *>(
        p->getAtomWithIdx(0)->getMonomerInfo());
    CHECK(pres->getResidueNumber() == 1);
    REQUIRE(!p->getAtomWithIdx(4)->getMonomerInfo());
  }
}

static void clearAtomMappingProps(ROMol &mol) {
  for (auto &&a : mol.atoms()) {
    a->clear();
  }
}

TEST_CASE("Github #2366 Enhanced Stereo", "[Reaction][StereoGroup][bug]") {
  SECTION("Reaction Preserves Stereo") {
    ROMOL_SPTR mol("F[C@H](Cl)Br |o1:1|"_smiles);
    REQUIRE(mol);
    unique_ptr<ChemicalReaction> rxn(
        RxnSmartsToChemicalReaction("[C@:1]>>[C@:1]"));
    REQUIRE(rxn);

    MOL_SPTR_VECT reactants = {mol};

    rxn->initReactantMatchers();
    auto prods = rxn->runReactants(reactants);
    REQUIRE(prods.size() == 1);
    REQUIRE(prods[0].size() == 1);
    auto p = prods[0][0];

    clearAtomMappingProps(*p);
    CHECK(MolToCXSmiles(*p) == "F[C@H](Cl)Br |o1:1|");
  }
  SECTION("Reaction destroys one center in StereoGroup") {
    ROMOL_SPTR mol("F[C@H](Cl)[C@@H](Cl)Br |&1:1,3|"_smiles);
    REQUIRE(mol);
    unique_ptr<ChemicalReaction> rxn(
        RxnSmartsToChemicalReaction("[C@:1]F>>[C:1]F"));
    REQUIRE(rxn);

    MOL_SPTR_VECT reactants = {mol};

    rxn->initReactantMatchers();
    auto prods = rxn->runReactants(reactants);
    REQUIRE(prods.size() == 1);
    REQUIRE(prods[0].size() == 1);
    auto p = prods[0][0];

    clearAtomMappingProps(*p);
    CHECK(MolToCXSmiles(*p) == "FC(Cl)[C@H](Cl)Br |&1:3|");
  }
  SECTION("Reaction splits StereoGroup") {
    ROMOL_SPTR mol("F[C@H](Cl)[C@@H](Cl)Br |&1:1,3|"_smiles);
    REQUIRE(mol);
    unique_ptr<ChemicalReaction> rxn(RxnSmartsToChemicalReaction(
        "[F:1][C@:2][C@:3][Cl:4]>>[F:1][C@:2]O.O[C@:3][Cl:4]"));
    REQUIRE(rxn);

    MOL_SPTR_VECT reactants = {mol};

    rxn->initReactantMatchers();
    auto prods = rxn->runReactants(reactants);
    REQUIRE(prods.size() == 1);
    REQUIRE(prods[0].size() == 2);
    auto p0 = prods[0][0];
    auto p1 = prods[0][1];

    clearAtomMappingProps(*p0);
    clearAtomMappingProps(*p1);
    CHECK(MolToCXSmiles(*p0) == "O[C@H](F)Cl |&1:1|");
    CHECK(MolToCXSmiles(*p1) == "O[C@H](Cl)Br |&1:1|");
  }
  SECTION("Reaction combines StereoGroups") {
    ROMOL_SPTR mol1("F[C@H](Cl)O |&1:1|"_smiles);
    REQUIRE(mol1);
    ROMOL_SPTR mol2("Cl[C@H](Br)O |&1:1|"_smiles);
    REQUIRE(mol2);
    unique_ptr<ChemicalReaction> rxn(RxnSmartsToChemicalReaction(
        "[F:1][C@:2]O.O[C@:3][Cl:4]>>[F:1][C@:2][C@:3][Cl:4]"));
    REQUIRE(rxn);

    MOL_SPTR_VECT reactants = {mol1, mol2};

    rxn->initReactantMatchers();
    auto prods = rxn->runReactants(reactants);
    REQUIRE(prods.size() == 1);
    REQUIRE(prods[0].size() == 1);
    auto p0 = prods[0][0];

    clearAtomMappingProps(*p0);
    CHECK(MolToCXSmiles(*p0) == "F[C@H](Cl)[C@H](Cl)Br |&1:1,&2:3|");
  }
}

TEST_CASE("Github #2427 cannot set maxProducts>1000 in runReactants",
          "[Reaction][bug]") {
  SECTION("Basics") {
    std::string smi = "[C]";
    for (unsigned int i = 0; i < 49; ++i) {
      smi += ".[C]";
    }
    ROMOL_SPTR mol(SmilesToMol(smi));
    REQUIRE(mol);
    unique_ptr<ChemicalReaction> rxn(
        RxnSmartsToChemicalReaction("([#6:1].[#6:2])>>[#6:1]-[#6:2]"));
    REQUIRE(rxn);

    MOL_SPTR_VECT reactants = {mol};

    rxn->initReactantMatchers();
    // by default we only get 1000 products:
    {
      auto prods = rxn->runReactants(reactants);
      CHECK(prods.size() == 1000);
      CHECK(prods[0].size() == 1);
    }
    {
      auto prods = rxn->runReactants(reactants, 2000);
      CHECK(prods.size() == 2000);
      CHECK(prods[0].size() == 1);
    }
  }
}

TEST_CASE("negative charge queries. Part of testing changes for github #2604",
          "[Reaction]") {
  SECTION("no redundancy") {
    unique_ptr<ChemicalReaction> rxn(
        RxnSmartsToChemicalReaction("[N+{1-}:1]>>[#0-1:1]"));
    REQUIRE(rxn);

    // we don't have a way to directly create NegativeFormalCharge queries, so
    // make one by hand
    REQUIRE(rxn->getProducts()[0]->getAtomWithIdx(0)->hasQuery());
    static_cast<QueryAtom *>(rxn->getProducts()[0]->getAtomWithIdx(0))
        ->expandQuery(makeAtomNegativeFormalChargeQuery(1));
    unsigned nWarnings = 0;
    unsigned nErrors = 0;
    CHECK(rxn->validate(nWarnings, nErrors));
    CHECK(nWarnings == 0);
    CHECK(nErrors == 0);
  }
  SECTION("no redundancy2") {
    unique_ptr<ChemicalReaction> rxn(
        RxnSmartsToChemicalReaction("[N+{1-}:1]>>[#0+1:1]"));
    REQUIRE(rxn);

    // we don't have a way to directly create NegativeFormalCharge queries, so
    // make one by hand
    REQUIRE(rxn->getProducts()[0]->getAtomWithIdx(0)->hasQuery());
    static_cast<QueryAtom *>(rxn->getProducts()[0]->getAtomWithIdx(0))
        ->expandQuery(makeAtomNegativeFormalChargeQuery(
            -1));  // a bit kludgy, but we need to check
    unsigned nWarnings = 0;
    unsigned nErrors = 0;
    CHECK(rxn->validate(nWarnings, nErrors));
    CHECK(nWarnings == 0);
    CHECK(nErrors == 0);
  }
  SECTION("redundancy") {
    unique_ptr<ChemicalReaction> rxn(
        // RxnSmartsToChemicalReaction("[N+{1-}:1]>>[#0+1+2:1]"));
        RxnSmartsToChemicalReaction("[N+{1-}:1]>>[#0-1:1]"));
    REQUIRE(rxn);
    // we don't have a way to directly create NegativeFormalCharge queries, so
    // make one by hand
    REQUIRE(rxn->getProducts()[0]->getAtomWithIdx(0)->hasQuery());
    static_cast<QueryAtom *>(rxn->getProducts()[0]->getAtomWithIdx(0))
        ->expandQuery(makeAtomNegativeFormalChargeQuery(2));
    unsigned nWarnings = 0;
    unsigned nErrors = 0;
    CHECK(rxn->validate(nWarnings, nErrors));
    CHECK(nWarnings == 1);
    CHECK(nErrors == 0);
  }
}

TEST_CASE("GithHub #2954: Reaction Smarts with Dative Bonds not parsed",
          "[Reaction][Bug]") {
  SECTION("Rxn Smart Processing with Dative Bond in Product") {
    unique_ptr<ChemicalReaction> rxn1(
        RxnSmartsToChemicalReaction("[O:1].[H+]>>[O:1]->[H+]"));

    REQUIRE(rxn1);
    auto k = rxn1->getProducts()[0]->getNumAtoms();
    CHECK(k == 2);
  }

  SECTION("Rxn Smart Processing with Dative Bond in Reactant") {
    unique_ptr<ChemicalReaction> rxn2(
        RxnSmartsToChemicalReaction("[O:1]->[H+]>>[O:1].[H+]"));

    REQUIRE(rxn2);

    auto k = rxn2->getReactants()[0]->getNumAtoms();
    CHECK(k == 2);
  }

  SECTION("Rxm Smart Processing with Dative Bond in Agent") {
    unique_ptr<ChemicalReaction> rxn(
        RxnSmartsToChemicalReaction("[O:1][H]>N->[Cu]>[O:1].[H]"));
    REQUIRE(rxn);

    auto k = rxn->getAgents()[0]->getNumAtoms();
    CHECK(k == 2);
  }
}

TEST_CASE("GithHub #3119: partial reacting atom detection", "[Reaction][Bug]") {
  SECTION("as reported") {
    bool useSmiles = true;
    std::unique_ptr<ChemicalReaction> rxn(RxnSmartsToChemicalReaction(
        "[CH:1]1=[CH:2][CH:3]=[C:4]([C:5](=[CH:6]1)[CH2:7]Cl)[O:8][CH2:9]"
        "[CH2:10]Cl>>[CH:1]1=[CH:2][CH:3]=[C:4]([C:5](=[CH:6]1)[CH2:7]I)["
        "O:8][CH2:9][CH2:10]I",
        nullptr, useSmiles));
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    bool mappedAtomsOnly = true;
    auto rAtoms = getReactingAtoms(*rxn, mappedAtomsOnly);
    REQUIRE(rAtoms.size() == 1);
    CHECK(rAtoms[0].size() == 2);
    CHECK(rAtoms[0][0] == 6);
    CHECK(rAtoms[0][1] == 10);
  }
}

#ifdef RDK_USE_BOOST_IOSTREAMS
TEST_CASE("reaction data in PNGs 1", "[Reaction][PNG]") {
  std::string pathName = getenv("RDBASE");
  pathName += "/Code/GraphMol/ChemReactions/testData/";
  std::string sma =
      "[cH:1]1[cH:2][cH:3][cH:4][cH:5][c:6]1-[Br].[#6:7]B(O)O>>[cH:1]1[cH:2]["
      "cH:3][cH:4][cH:5][c:6]1-[#6:7]";
  SECTION("add/read metadata") {
    std::vector<std::pair<std::string, std::string>> metadata;
    metadata.push_back(std::make_pair(PNGData::rxnSmartsTag, sma));
    std::string fname = pathName + "reaction1.no_metadata.png";
    bool compressed = false;
    auto pngData = addMetadataToPNGFile(fname, metadata, compressed);
    metadata = PNGStringToMetadata(pngData);
    auto iter =
        std::find_if(metadata.begin(), metadata.end(),
                     [](const std::pair<std::string, std::string> &val) {
                       return val.first == PNGData::rxnSmartsTag;
                     });
    REQUIRE(iter != metadata.end());
  }
  SECTION("read from file") {
    std::string fname = pathName + "reaction1.smarts.png";
    std::unique_ptr<ChemicalReaction> rxn(PNGFileToChemicalReaction(fname));
    REQUIRE(rxn);
    CHECK(rxn->getNumReactantTemplates() == 2);
    CHECK(rxn->getNumProductTemplates() == 1);
  }
  SECTION("add/read reaction to/from file") {
    std::unique_ptr<ChemicalReaction> rxn(RxnSmartsToChemicalReaction(sma));
    REQUIRE(rxn);
    std::string fname = pathName + "reaction1.no_metadata.png";
    {
      auto pngData = addChemicalReactionToPNGFile(*rxn, fname);
      std::unique_ptr<ChemicalReaction> nrxn(
          PNGStringToChemicalReaction(pngData));
      REQUIRE(nrxn);
      CHECK(nrxn->getNumReactantTemplates() == 2);
      CHECK(nrxn->getNumProductTemplates() == 1);
    }
    {
      bool includePkl = true;
      bool includeSmiles = false;
      bool includeSmarts = false;
      bool includeRxn = false;
      auto pngData = addChemicalReactionToPNGFile(
          *rxn, fname, includePkl, includeSmiles, includeSmarts, includeRxn);
      std::unique_ptr<ChemicalReaction> nrxn(
          PNGStringToChemicalReaction(pngData));
      REQUIRE(nrxn);
      CHECK(nrxn->getNumReactantTemplates() == 2);
      CHECK(nrxn->getNumProductTemplates() == 1);
    }
    {
      bool includePkl = false;
      bool includeSmiles = true;
      bool includeSmarts = false;
      bool includeRxn = false;
      auto pngData = addChemicalReactionToPNGFile(
          *rxn, fname, includePkl, includeSmiles, includeSmarts, includeRxn);
      std::unique_ptr<ChemicalReaction> nrxn(
          PNGStringToChemicalReaction(pngData));
      REQUIRE(nrxn);
      CHECK(nrxn->getNumReactantTemplates() == 2);
      CHECK(nrxn->getNumProductTemplates() == 1);
    }
    {
      bool includePkl = false;
      bool includeSmiles = false;
      bool includeSmarts = true;
      bool includeRxn = false;
      auto pngData = addChemicalReactionToPNGFile(
          *rxn, fname, includePkl, includeSmiles, includeSmarts, includeRxn);
      std::unique_ptr<ChemicalReaction> nrxn(
          PNGStringToChemicalReaction(pngData));
      REQUIRE(nrxn);
      CHECK(nrxn->getNumReactantTemplates() == 2);
      CHECK(nrxn->getNumProductTemplates() == 1);
    }
    {
      bool includePkl = false;
      bool includeSmiles = false;
      bool includeSmarts = false;
      bool includeRxn = true;
      auto pngData = addChemicalReactionToPNGFile(
          *rxn, fname, includePkl, includeSmiles, includeSmarts, includeRxn);
      std::unique_ptr<ChemicalReaction> nrxn(
          PNGStringToChemicalReaction(pngData));
      REQUIRE(nrxn);
      CHECK(nrxn->getNumReactantTemplates() == 2);
      CHECK(nrxn->getNumProductTemplates() == 1);
    }
  }
}
#endif

TEST_CASE("Github #2891", "[Reaction][chirality][bug]") {
  SECTION("reaction parsing inversion logic") {
    std::vector<std::pair<std::string, int>> tests{
        {"[C:4][C@:2]([F:1])[Br:3]>>[C:4][C@:2]([F:1])[S:3]", 2},
        {"[C:4][C@@:2]([F:1])[Br:3]>>[C:4][C@:2]([F:1])[S:3]", 1},
        {"[C:4][C@:2]([F:1])[Br:3]>>[C:4][C@:2]([S:3])[F:1]", 1},
        {"[C:4][C@@:2]([F:1])[Br:3]>>[C:4][C@:2]([S:3])[F:1]", 2},
        // add mapped substituents
        {"[C:4][C@:2]([F:1])[Br:3]>>[C:4][C@:2]([F:1])([S:3])[Cl:5]", 2},
        {"[C:4][C@@:2]([F:1])[Br:3]>>[C:4][C@:2]([F:1])([S:3])[Cl:5]", 1},
        {"[C:4][C@:2]([F:1])[Br:3]>>[C:4][C@:2]([F:1])([Cl:5])[S:3]", 1},
        {"[C:4][C@@:2]([F:1])[Br:3]>>[C:4][C@:2]([F:1])([Cl:5])[S:3]", 2},
        // remove mapped substituents
        {"[C:4][C@:2]([F:1])([Br:3])[Cl:5]>>[C:4][C@:2]([F:1])[S:3]", 2},
        {"[C:4][C@@:2]([F:1])([Br:3])[Cl:5]>>[C:4][C@:2]([F:1])[S:3]", 1},
        {"[C:4][C@:2]([F:1])([Cl:5])[Br:3]>>[C:4][C@:2]([F:1])[S:3]", 1},
        {"[C:4][C@@:2]([F:1])([Cl:5])[Br:3]>>[C:4][C@:2]([F:1])[S:3]", 2},
        // add unmapped substituents
        {"[C:4][C@:2]([F:1])[Br:3]>>[C:4][C@:2]([F:1])([S:3])[Cl]", 2},
        {"[C:4][C@@:2]([F:1])[Br:3]>>[C:4][C@:2]([F:1])([S:3])[Cl]", 1},
        {"[C:4][C@:2]([F:1])[Br:3]>>[C:4][C@:2]([F:1])([Cl])[S:3]", 1},
        {"[C:4][C@@:2]([F:1])[Br:3]>>[C:4][C@:2]([F:1])([Cl])[S:3]", 2},
        // remove unmapped substituents
        {"[C:4][C@:2]([F:1])([Br:3])[Cl]>>[C:4][C@:2]([F:1])[S:3]", 2},
        {"[C:4][C@@:2]([F:1])([Br:3])[Cl]>>[C:4][C@:2]([F:1])[S:3]", 1},
        {"[C:4][C@:2]([F:1])([Cl])[Br:3]>>[C:4][C@:2]([F:1])[S:3]", 1},
        {"[C:4][C@@:2]([F:1])([Cl])[Br:3]>>[C:4][C@:2]([F:1])[S:3]", 2},
    };
    for (const auto &pr : tests) {
      std::unique_ptr<ChemicalReaction> rxn(
          RxnSmartsToChemicalReaction(pr.first));
      REQUIRE(rxn);
      auto minv = rxn->getProducts()[0]->getAtomWithIdx(1)->getProp<int>(
          common_properties::molInversionFlag);
      if (minv != pr.second) {
        std::cerr << pr.first << std::endl;
      }
      CHECK(minv == pr.second);
    }
  }
  SECTION("simplified") {
    auto r1_1 = ROMOL_SPTR(SmilesToMol("C[C@H](F)Br"));
    auto r1_2 = ROMOL_SPTR(SmilesToMol("C[C@@H](F)Br"));
    auto r1_3 = ROMOL_SPTR(SmilesToMol("C[C@@H](Br)F"));
    auto r1_4 = ROMOL_SPTR(SmilesToMol("C[C@H](Br)F"));

    std::unique_ptr<ChemicalReaction> rxn(RxnSmartsToChemicalReaction(
        "[C:4][C@:2]([F:1])[Br:3]>>[C:4][C@@:2]([F:1])[S:3]"));
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    {
      MOL_SPTR_VECT reacts{r1_1};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@@H](F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@H](F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_3};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@@H](F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_4};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@H](F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
  }

  SECTION("simplified2") {
    auto r1_1 = ROMOL_SPTR(SmilesToMol("C[C@H](F)Br"));
    auto r1_2 = ROMOL_SPTR(SmilesToMol("C[C@@H](F)Br"));
    auto r1_3 = ROMOL_SPTR(SmilesToMol("C[C@@H](Br)F"));
    auto r1_4 = ROMOL_SPTR(SmilesToMol("C[C@H](Br)F"));

    // makes sure we also handle swaps in the atom ordering properly
    // this isn't an inversion, despite going @->@@, because the atom order
    // also changes
    std::unique_ptr<ChemicalReaction> rxn(RxnSmartsToChemicalReaction(
        "[C:4][C@:2]([F:1])[Br:3]>>[C:4][C@@:2]([S:3])[F:1]"));
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    CHECK(rxn->getProducts()[0]->getAtomWithIdx(1)->getProp<int>(
              common_properties::molInversionFlag) == 2);
    {
      MOL_SPTR_VECT reacts{r1_1};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@H](F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@@H](F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_3};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@H](F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_4};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@@H](F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
  }

  SECTION("simplified3") {
    auto r1_1 = ROMOL_SPTR(SmilesToMol("C[C@H](F)Br"));
    auto r1_2 = ROMOL_SPTR(SmilesToMol("C[C@@H](F)Br"));
    auto r1_3 = ROMOL_SPTR(SmilesToMol("C[C@@H](Br)F"));
    auto r1_4 = ROMOL_SPTR(SmilesToMol("C[C@H](Br)F"));

    // adding a bond in the products.
    std::unique_ptr<ChemicalReaction> rxn(RxnSmartsToChemicalReaction(
        "[C:4][C@:2]([F:1])[Br:3]>>[C:4][C@@:2](O)([F:1])[S:3]"));
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    CHECK(rxn->getProducts()[0]->getAtomWithIdx(1)->getProp<int>(
              common_properties::molInversionFlag) == 1);
    {
      MOL_SPTR_VECT reacts{r1_1};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@@](O)(F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@](O)(F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_3};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@@](O)(F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_4};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@](O)(F)S"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
  }

  SECTION("reported1") {
    auto r1_1 = ROMOL_SPTR(SmilesToMol("O[C@@H](Br)c1ccccc1"));
    auto r1_2 = ROMOL_SPTR(SmilesToMol("O[C@H](Br)c1ccccc1"));
    auto r1_3 = ROMOL_SPTR(SmilesToMol("O[C@@H](c1ccccc1)Br"));
    auto r1_4 = ROMOL_SPTR(SmilesToMol("O[C@H](c1ccccc1)Br"));
    auto r2 = ROMOL_SPTR(SmilesToMol("SCC"));

    std::unique_ptr<ChemicalReaction> rxn(
        RxnSmartsToChemicalReaction("[O:5][C@:1]([Br:2])[*:6].[S:3][C:4]>>[*:"
                                    "5][C@@:1]([S:3][*:4])[*:6]"));
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    {
      MOL_SPTR_VECT reacts{r1_1, r2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("O[C@H](SCC)c1ccccc1"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_2, r2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("O[C@@H](SCC)c1ccccc1"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_3, r2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("O[C@H](c1ccccc1)SCC"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_4, r2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("O[C@@H](c1ccccc1)SCC"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
  }

  SECTION("reported2") {
    auto r1_1 = ROMOL_SPTR(SmilesToMol("C[C@@H](Br)c1ccccc1"));
    auto r1_2 = ROMOL_SPTR(SmilesToMol("C[C@H](Br)c1ccccc1"));
    auto r1_3 = ROMOL_SPTR(SmilesToMol("C[C@@H](c1ccccc1)Br"));
    auto r1_4 = ROMOL_SPTR(SmilesToMol("C[C@H](c1ccccc1)Br"));
    auto r2 = ROMOL_SPTR(SmilesToMol("SCC"));
    std::unique_ptr<ChemicalReaction> rxn(RxnSmartsToChemicalReaction(
        "[C@:1][Br:2].[S:3][C:4]>>[C@@:1][*:3][*:4]"));
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    {
      MOL_SPTR_VECT reacts{r1_1, r2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@H](SCC)c1ccccc1"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_2, r2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@@H](SCC)c1ccccc1"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_3, r2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@H](c1ccccc1)SCC"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
    {
      MOL_SPTR_VECT reacts{r1_4, r2};
      auto ps = rxn->runReactants(reacts);
      CHECK(ps.size() == 1);
      CHECK(ps[0].size() == 1);
      auto tsmi = MolToSmiles(*("C[C@@H](c1ccccc1)SCC"_smiles));
      CHECK(MolToSmiles(*ps[0][0]) == tsmi);
    }
  }
}

TEST_CASE("reaction literals") {
  {
    auto rxn = "[O:1]>>[N:1]"_rxnsmarts;
    CHECK(rxn != nullptr);
  }
  {
    auto rxn = "[O:1]>>[N:1]"_rxnsmiles;
    CHECK(rxn != nullptr);
  }
  {
    auto rxn = "CC1>>CC1"_rxnsmarts;
    CHECK(rxn == nullptr);
  }
  {
    auto rxn = "CC1>>CC1"_rxnsmiles;
    CHECK(rxn == nullptr);
  }
  {
    auto rxn = "Cc1cc1>>CCC"_rxnsmarts;
    CHECK(rxn != nullptr);
  }
  {
    auto rxn = "Cc1cc1>>CCC"_rxnsmiles;
    CHECK(rxn != nullptr);
  }
}
TEST_CASE("one-component reactions") {
  SECTION("removing atoms") {
    auto rxn = "CC[N:1]>>[N:1]"_rxnsmarts;
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    {  // molecule which does not match:
      auto mol = "CCO"_smiles;
      REQUIRE(mol);
      CHECK(!rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      CHECK(MolToSmiles(*mol) == "CCO");
    }
    {
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 1);
      CHECK(MolToSmiles(*mol) == "N");
    }
    {
      auto mol = "CCNC"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 2);
      CHECK(MolToSmiles(*mol) == "CN");
    }
    {
      auto mol = "NCC"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 1);
      CHECK(MolToSmiles(*mol) == "N");
    }
    {
      auto mol = "CNCC"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 2);
      CHECK(MolToSmiles(*mol) == "CN");
    }
    {
      auto mol = "CCCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 1);
      CHECK(MolToSmiles(*mol) == "N");
    }
    {
      auto mol = "CCCN(C)CO"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 4);
      CHECK(MolToSmiles(*mol) == "CNCO");
    }
    {  // multiple matches, we only modify one (and it's arbitrary which)
      auto mol = "CCNCNCC"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 5);
      CHECK(MolToSmiles(*mol) == "CCNCN");
    }
    {  // fragments don't pass through:
      auto mol = "CCN.Cl"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 1);
      CHECK(MolToSmiles(*mol) == "N");
    }
  }
  SECTION("removing atoms 2") {
    auto rxn = "[C:2][N:1]>>[N:1]"_rxnsmarts;
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    {
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 1);
      CHECK(MolToSmiles(*mol) == "N");
    }
  }
  SECTION("unmapped atoms in the product is an error") {
    {
      auto rxn = "[N:1]>>[N:1]CC"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "N"_smiles;
      REQUIRE(mol);
      CHECK_THROWS_AS(rxn->runReactant(*mol), ChemicalReactionException);
    }
    {
      auto rxn = "[N:1]>>[N:1][C:2]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "N"_smiles;
      REQUIRE(mol);
      CHECK_THROWS_AS(rxn->runReactant(*mol), ChemicalReactionException);
    }
  }
  SECTION("modifying atoms") {
    {
      auto rxn = "[C:2][N:1]>>[C:2][O:1]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      MolOps::sanitizeMol(*mol);
      CHECK(MolToSmiles(*mol) == "CCO");
    }
    {
      auto rxn = "[C:2][N+0:1]>>[C:2][N+1:1]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      MolOps::sanitizeMol(*mol);
      CHECK(MolToSmiles(*mol) == "CC[NH3+]");
    }
    {
      auto rxn = "[C:2][N:1]>>[15N:1][C:2]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      MolOps::sanitizeMol(*mol);
      CHECK(MolToSmiles(*mol) == "CC[15NH2]");
    }
    {
      auto rxn = "[C:2][15N:1]>>[0N:1][C:2]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CC[15NH2]"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      MolOps::sanitizeMol(*mol);
      CHECK(MolToSmiles(*mol) == "CCN");
    }
  }
  SECTION("modifying bonds") {
    {
      auto rxn = "[C:2]-[N:1]>>([N:1].[C:2])"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      CHECK(MolToSmiles(*mol) == "CC.N");
    }
    {
      auto rxn = "([C:2].[N:1])>>[N:1]-[C:2]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CC.N"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      CHECK(MolToSmiles(*mol) == "CCN");
    }
    {
      auto rxn = "([CH3:2].[N:1])>>[N:1]-[C:2]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      CHECK(MolToSmiles(*mol) == "C1CN1");
    }
    {
      auto rxn = "([CH2:2].[N:1])>>[N:1]-[C:2]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(!rxn->runReactant(*mol));
    }
    {
      auto rxn = "([CH2:2].[N:1])>>[N:1]=[C:2]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      CHECK(MolToSmiles(*mol) == "CC=N");
    }
    {
      auto rxn = "[C:2]-[N:1]>>[C:2]=[O:1]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      CHECK(MolToSmiles(*mol) == "CC=O");
    }
    {
      auto rxn = "[C:2]-[N:1]>>[C:2]~[O:1]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      CHECK(MolToSmiles(*mol) == "CCO");
    }
    {
      auto rxn = "[C:2]~[N:1]>>[C:2]=[O:1]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CCN"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 3);
      CHECK(MolToSmiles(*mol) == "CC=O");
    }
  }
  SECTION("atom stereo") {
    {  // remove
      auto rxn =
          "[C:1][C@:2]([F:3])([Cl:4])[I:5]>>[C:1][C:2]([F:3])([Cl:4])[I:5]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CC[C@](F)(Cl)I"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(MolToSmiles(*mol) == "CCC(F)(Cl)I");
    }
    {  // create
      auto rxn =
          "[C:1][C:2]([F:3])([Cl:4])[I:5]>>[C:1][C@@:2]([F:3])([Cl:4])[I:5]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CC[C@](F)(Cl)I"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(MolToSmiles(*mol) == "CC[C@@](F)(Cl)I");
    }
    {  // create, swap order
      auto rxn =
          "[C:1][C:2]([F:3])([Cl:4])[I:5]>>[C:1][C@@:2]([Cl:4])([F:3])[I:5]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CC[C@](F)(Cl)I"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(MolToSmiles(*mol) == "CC[C@](F)(Cl)I");
    }

    {  // invert
      auto rxn =
          "[C:1][C@:2]([F:3])([Cl:4])[I:5]>>[C:1][C@@:2]([F:3])([Cl:4])[I:5]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CC[C@](F)(Cl)I"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(MolToSmiles(*mol) == "CC[C@@](F)(Cl)I");
    }
    {  // preserve, but order swap
      auto rxn =
          "[C:1][C@:2]([F:3])([Cl:4])[I:5]>>[C:1][C@@:2]([Cl:4])([F:3])[I:5]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "CC[C@](F)(Cl)I"_smiles;
      REQUIRE(mol);
      CHECK(!rxn->runReactant(*mol));
      CHECK(MolToSmiles(*mol) == "CC[C@](F)(Cl)I");
    }
  }
  SECTION("check reactant/product count") {
    {
      auto rxn = "[N:1].[O:2]>>[N:1]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "N"_smiles;
      REQUIRE(mol);
      CHECK_THROWS_AS(rxn->runReactant(*mol), ChemicalReactionException);
    }
    {
      auto rxn = "[N:1]>>[N:1].[O:2]"_rxnsmarts;
      REQUIRE(rxn);
      rxn->initReactantMatchers();
      auto mol = "N"_smiles;
      REQUIRE(mol);
      CHECK_THROWS_AS(rxn->runReactant(*mol), ChemicalReactionException);
    }
  }
  SECTION("toggling removing unmapped atoms") {
    auto rxn = "CC[N:1]>>[N:1]"_rxnsmarts;
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    {
      auto mol = "CCN.Cl"_smiles;
      REQUIRE(mol);
      CHECK(rxn->runReactant(*mol));
      CHECK(mol->getNumAtoms() == 1);
      CHECK(MolToSmiles(*mol) == "N");
    }
    {
      auto mol = "CCN.Cl"_smiles;
      REQUIRE(mol);
      bool removeUnmatchedAtoms = false;
      CHECK(rxn->runReactant(*mol, removeUnmatchedAtoms));
      CHECK(mol->getNumAtoms() == 2);
      CHECK(MolToSmiles(*mol) == "Cl.N");
    }
    {  // extra atoms connected to the matching part should not be removed
      auto mol = "CCCN.Cl"_smiles;
      REQUIRE(mol);
      bool removeUnmatchedAtoms = false;
      CHECK(rxn->runReactant(*mol, removeUnmatchedAtoms));
      CHECK(mol->getNumAtoms() == 3);
      CHECK(MolToSmiles(*mol) == "C.Cl.N");
    }
  }
}
TEST_CASE("Github #4759 Reaction parser fails when CX extensions are present") {
  std::string sma = "[C:1]Br.[C:2]O>>[C:2][C:1] |$Aryl;;;;;Aryl$|";
  SECTION("SMARTS") {
    std::unique_ptr<ChemicalReaction> rxn(RxnSmartsToChemicalReaction(sma));
    REQUIRE(rxn);
    // make sure we have a product and that it didn't end up with a name:
    CHECK(rxn->getProducts().size() == 1);
    CHECK(!rxn->getProducts()[0]->hasProp(common_properties::_Name));
    CHECK(rxn->getProducts()[0]->getNumAtoms() == 2);
    CHECK(rxn->getProducts()[0]->getAtomWithIdx(1)->hasProp(
        common_properties::atomLabel));
    CHECK(rxn->getProducts()[0]->getAtomWithIdx(1)->getProp<std::string>(
              common_properties::atomLabel) == "Aryl");
    CHECK(rxn->getReactants()[0]->getAtomWithIdx(0)->hasProp(
        common_properties::atomLabel));
    CHECK(rxn->getReactants()[0]->getAtomWithIdx(0)->getProp<std::string>(
              common_properties::atomLabel) == "Aryl");
  }
  SECTION("SMILES") {
    bool useSmiles = true;
    std::unique_ptr<ChemicalReaction> rxn(
        RxnSmartsToChemicalReaction(sma, nullptr, useSmiles));
    REQUIRE(rxn);
    CHECK(rxn->getProducts().size() == 1);
    CHECK(!rxn->getProducts()[0]->hasProp(common_properties::_Name));
    CHECK(rxn->getProducts()[0]->getNumAtoms() == 2);
  }
  SECTION("disabling CXSMILES") {
    bool useSmiles = false;
    bool allowCXSMILES = false;
    std::unique_ptr<ChemicalReaction> rxn(
        RxnSmartsToChemicalReaction(sma, nullptr, useSmiles, allowCXSMILES));
    REQUIRE(rxn);
    CHECK(rxn->getProducts().size() == 1);
    CHECK(!rxn->getProducts()[0]->hasProp(common_properties::_Name));
    CHECK(rxn->getProducts()[0]->getNumAtoms() == 2);
    CHECK(!rxn->getProducts()[0]->getAtomWithIdx(1)->hasProp(
        common_properties::atomLabel));
    CHECK(!rxn->getReactants()[0]->getAtomWithIdx(0)->hasProp(
        common_properties::atomLabel));
  }
  SECTION("Ensure we still handle spaces before/after the >>") {
    auto rxn = " [C:1]Br.[C:2]O >> [C:2][C:1] |$Aryl;;;;;Aryl$|"_rxnsmarts;
    // make sure we have a product and that it didn't end up with a name:
    CHECK(rxn->getProducts().size() == 1);
    CHECK(!rxn->getProducts()[0]->hasProp(common_properties::_Name));
    CHECK(rxn->getProducts()[0]->getNumAtoms() == 2);
  }
  SECTION("advanced space removal") {
    // clang-format off
    auto rxn =
        " [C:1]Br  . [C:2]O    >  CCO  > [C:2][C:1] .   [Cl]    |$Aryl;;;;;Aryl$|"_rxnsmarts;
    // clang-format on
    REQUIRE(rxn);
    CHECK(rxn->getReactants().size() == 2);
    CHECK(rxn->getAgents().size() == 1);
    // make sure we have a product and that it didn't end up with a name:
    CHECK(rxn->getProducts().size() == 2);
    CHECK(!rxn->getProducts()[0]->hasProp(common_properties::_Name));
    CHECK(rxn->getProducts()[0]->getNumAtoms() == 2);
  }
  SECTION("not a cxsmiles") {
    // clang-format off
    auto rxn =
        "[C:1]Br.[C:2]O>CCO>[C:2][C:1].[Cl]  reaction_name"_rxnsmarts;
    // clang-format on
    REQUIRE(rxn);
    CHECK(rxn->getReactants().size() == 2);
    CHECK(rxn->getAgents().size() == 1);
    // make sure we have a product and that it didn't end up with a name:
    CHECK(rxn->getProducts().size() == 2);
    CHECK(!rxn->getProducts()[0]->hasProp(common_properties::_Name));
    CHECK(rxn->getProducts()[0]->getNumAtoms() == 2);
  }
}

TEST_CASE("CXSMILES for reactions", "[cxsmiles]") {
  SECTION("basics") {
    // clang-format off
    auto rxn = "[CH3:1][CH:2]([CH3:3])[*:4].[OH:5][CH2:6][*:7]>>[CH3:1][CH:2]([CH3:3])[CH2:6][OH:5] |$;;;_AP1;;;_AP1;;;;;$|"_rxnsmarts;
    // clang-format on
    REQUIRE(rxn);
    CHECK(rxn->getReactants().size() == 2);
    std::string alabel;
    CHECK(rxn->getReactants()[0]->getAtomWithIdx(3)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");
    CHECK(rxn->getReactants()[1]->getAtomWithIdx(2)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");

    auto expected_cxsmiles =
        "[CH3:1][CH:2]([CH3:3])[*:4].[OH:5][CH2:6][*:7]>>[CH3:1][CH:2]([CH3:3])[CH2:6][OH:5] |$;;;_AP1;;;_AP1;;;;;$|";
    SmilesWriteParams params;
    auto flags = RDKit::SmilesWrite::CX_ALL ^ RDKit::SmilesWrite::CX_ATOM_PROPS;
    std::string output_cxsmiles =
        ChemicalReactionToCXRxnSmiles(*rxn, params, flags);
    CHECK(output_cxsmiles == expected_cxsmiles);

    auto roundtrip = v2::ReactionParser::ReactionFromSmiles(output_cxsmiles);
    REQUIRE(roundtrip);

    CHECK(roundtrip->getReactants().size() == 2);
    CHECK(roundtrip->getReactants()[0]->getAtomWithIdx(3)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");
    CHECK(roundtrip->getReactants()[1]->getAtomWithIdx(2)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");
  }

  SECTION("basics with agents") {
    // clang-format off
    auto rxn = "[CH3:1][CH:2]([CH3:3])[*:4].[OH:5][CH2:6][*:7]>O=C=O>[CH3:1][CH:2]([CH3:3])[CH2:6][OH:5] |$;;;_AP1;;;_AP1;;;;;;;;$|"_rxnsmarts;
    // clang-format on
    REQUIRE(rxn);
    CHECK(rxn->getReactants().size() == 2);
    std::string alabel;
    CHECK(rxn->getReactants()[0]->getAtomWithIdx(3)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");
    CHECK(rxn->getReactants()[1]->getAtomWithIdx(2)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");

    std::string expected_cxsmarts =
        "[C&H3:1][C&H1:2]([C&H3:3])[*:4].[O&H1:5][C&H2:6][*:7]>O=C=O>[C&H3:1][C&H1:2]([C&H3:3])[C&H2:6][O&H1:5] |$;;;_AP1;;;_AP1;;;;;;;;$|";
    SmilesWriteParams params;
    auto flags = RDKit::SmilesWrite::CX_ALL ^ RDKit::SmilesWrite::CX_ATOM_PROPS;
    std::string output_cxsmarts =
        ChemicalReactionToCXRxnSmarts(*rxn, params, flags);
    auto roundtrip = v2::ReactionParser::ReactionFromSmarts(output_cxsmarts);

    REQUIRE(roundtrip);
    CHECK(roundtrip->getReactants().size() == 2);
    CHECK(roundtrip->getReactants()[0]->getAtomWithIdx(3)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");
    CHECK(roundtrip->getReactants()[1]->getAtomWithIdx(2)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");

    CHECK(output_cxsmarts == expected_cxsmarts);
  }

  SECTION("missing products") {
    // clang-format off
    auto rxn="[CH3:1][CH:2]([CH3:3])[*:4].[OH:5][CH2:6][*:7]>> |$;;;_AP1;;;_AP1$|"_rxnsmarts;
    // clang-format on
    REQUIRE(rxn);
    CHECK(rxn->getReactants().size() == 2);
    std::string alabel;
    CHECK(rxn->getReactants()[0]->getAtomWithIdx(3)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");
    CHECK(rxn->getReactants()[1]->getAtomWithIdx(2)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");

    auto roundtrip = v2::ReactionParser::ReactionFromSmarts(
        ChemicalReactionToCXRxnSmarts(*rxn));
    REQUIRE(roundtrip);
    CHECK(roundtrip->getReactants().size() == 2);
    CHECK(roundtrip->getReactants()[0]->getAtomWithIdx(3)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");
    CHECK(roundtrip->getReactants()[1]->getAtomWithIdx(2)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");

    std::string expected_cxsmarts =
        "[C&H3:1][C&H1:2]([C&H3:3])[*:4].[O&H1:5][C&H2:6][*:7]>> |$;;;_AP1;;;_AP1$|";
    SmilesWriteParams params;
    auto flags = RDKit::SmilesWrite::CX_ALL ^ RDKit::SmilesWrite::CX_ATOM_PROPS;
    std::string output_cxsmarts =
        ChemicalReactionToCXRxnSmarts(*rxn, params, flags);
    CHECK(output_cxsmarts == expected_cxsmarts);
  }

  SECTION("coordinate bonds and sgroups") {
    // when initially writing this, coordinate bonds were not properly parsed
    // from SMARTS, so we use SMILES
    // clang-format off
    auto rxn = "[CH3:1][CH:2]([CH3:3])[*:4].[Fe:8][OH:5][CH2:6][*:7]>>[Fe:8][OH:5][CH2:6][CH2:1][CH:2]([CH3:3])[*:4] "
    "|$;;;_AP1;;;;_AP1;;;;;;;_AP1$,C:5.3,9.6,SgD:6:foo:bar::::,SgD:10:bar:baz::::|"_rxnsmiles;
    // clang-format on
    REQUIRE(rxn);
    CHECK(rxn->getReactants().size() == 2);
    CHECK(rxn->getProducts().size() == 1);
    std::string alabel;
    CHECK(rxn->getReactants()[0]->getAtomWithIdx(3)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");
    CHECK(rxn->getReactants()[1]->getAtomWithIdx(3)->getPropIfPresent(
        common_properties::atomLabel, alabel));
    CHECK(alabel == "_AP1");
    CHECK(getSubstanceGroups(*rxn->getReactants()[0]).empty());
    CHECK(getSubstanceGroups(*rxn->getReactants()[1]).size() == 1);

    const auto p0 = rxn->getProducts()[0];
    CHECK(p0->getAtomWithIdx(6)->getPropIfPresent(common_properties::atomLabel,
                                                  alabel));
    CHECK(alabel == "_AP1");
    CHECK(getSubstanceGroups(*p0).size() == 1);

    // Test that coordinate bonds are preserved.
    SmilesWriteParams params;
    auto flags = RDKit::SmilesWrite::CX_ALL ^ RDKit::SmilesWrite::CX_ATOM_PROPS;
    auto output_cxsmarts = ChemicalReactionToCXRxnSmarts(*rxn, params, flags);
    auto expected_cxsmarts =
        "[#6:1]-[#6:2](-[#6:3])-[#0:4].[Fe:8]<-[#8:5]-[#6:6]-[#0:7]>>[Fe:8]<-[#8:5]-[#6:6]-[#6:1]-[#6:2](-[#6:3])-[#0:4] |$;;;_AP1;;;;_AP1;;;;;;;_AP1$,C:5.3,9.6,SgD:6:foo:bar::::,SgD:10:bar:baz::::|";
    CHECK(output_cxsmarts == expected_cxsmarts);
  }

  SECTION("sgroup hierarchy") {
    // clang-format off
    auto rxn = "[CH3:6][O:5][CH:3](-*)[O:2]-*>>[CH3:6][NH:5][CH:3](-*)[O:2]-* "
    "|$;;;star_e;;star_e;;;;star_e;;star_e$,SgD:1,0:foo:bar::::,SgD:7,6:foo:baz::::,Sg:n:4,2,1,0::ht,Sg:n:10,8,7,6::ht,SgH:2:0,3:1|"_rxnsmiles;
    // clang-format on
    REQUIRE(rxn);

    std::string expected_cxsmarts =
        "[#6:6]-[#8:5]-[#6:3](-*)-[#8:2]-*>>[#6:6]-[#7:5]-[#6:3](-*)-[#8:2]-* |$;;;star_e;;star_e;;;;star_e;;star_e$,SgD:1,0:foo:bar::::,SgD:7,6:foo:baz::::,Sg:n:4,2,1,0::ht:::,Sg:n:10,8,7,6::ht:::,SgH:3:1.1|";
    SmilesWriteParams params;
    auto flags = RDKit::SmilesWrite::CX_ALL ^ RDKit::SmilesWrite::CX_ATOM_PROPS;
    std::string output_cxsmarts =
        ChemicalReactionToCXRxnSmarts(*rxn, params, flags);
    CHECK(output_cxsmarts == expected_cxsmarts);

    // Test properties of the rxn itself.
    CHECK(getSubstanceGroups(*rxn->getReactants()[0]).size() == 2);
    CHECK(getSubstanceGroups(*rxn->getProducts()[0]).size() == 2);

    const auto &sgsReact = getSubstanceGroups(*rxn->getReactants()[0]);
    const auto &sgsProd = getSubstanceGroups(*rxn->getProducts()[0]);

    CHECK(sgsReact[0].getAtoms() == std::vector<unsigned int>{1, 0});
    CHECK(sgsReact[1].getAtoms() == std::vector<unsigned int>{4, 2, 1, 0});

    CHECK(sgsProd[0].getAtoms() == std::vector<unsigned int>{1, 0});
    CHECK(sgsProd[1].getAtoms() == std::vector<unsigned int>{4, 2, 1, 0});

    // Ensure properties are set on the rxn.
    CHECK(sgsReact[0].getProp<unsigned int>("PARENT") == 2);
    CHECK(sgsProd[0].getProp<unsigned int>("PARENT") == 2);

    // Now create the roundtrip and check the same properties.
    auto roundtrip = v2::ReactionParser::ReactionFromSmarts(output_cxsmarts);
    REQUIRE(roundtrip);

    const auto &sgsRoundReact =
        getSubstanceGroups(*roundtrip->getReactants()[0]);
    REQUIRE(&sgsRoundReact);
    const auto &sgsRoundProd = getSubstanceGroups(*roundtrip->getProducts()[0]);
    REQUIRE(&sgsRoundProd);

    CHECK(getSubstanceGroups(*roundtrip->getReactants()[0]).size() == 2);
    CHECK(getSubstanceGroups(*roundtrip->getProducts()[0]).size() == 2);

    CHECK(sgsRoundProd[0].getAtoms() == std::vector<unsigned int>{1, 0});
    CHECK(sgsRoundProd[1].getAtoms() == std::vector<unsigned int>{4, 2, 1, 0});
    CHECK(sgsRoundReact[0].getAtoms() == std::vector<unsigned int>{1, 0});
    CHECK(sgsRoundReact[1].getAtoms() == std::vector<unsigned int>{4, 2, 1, 0});

    // Check that the properties are set on the roundtrip rxn.
    CHECK(sgsRoundProd[0].getProp<unsigned int>("PARENT") == 2);
    // Doesn't work because .... maybe because the substance groups are
    // intertwined react/prod? The sg hierarchy is not being written for the
    // reactant... CHECK(sgsRoundReact[0].getProp<unsigned int>("PARENT") == 2);
  }
  SECTION("link nodes") {
    // clang-format off
    auto rxn = "CO.OC1CCC(F)C1>>COC1CC(O)CC1F |LN:3:1.3.4.8,13:2.5.12.15|"_rxnsmarts;
    // clang-format on
    REQUIRE(rxn);
    CHECK(rxn->getReactants().size() == 2);
    CHECK(rxn->getProducts().size() == 1);
    CHECK(
        !rxn->getReactants()[0]->hasProp(common_properties::molFileLinkNodes));
    std::string lns;
    CHECK(rxn->getReactants()[1]->getPropIfPresent(
        common_properties::molFileLinkNodes, lns));
    CHECK(lns == "1 3 2 2 3 2 7");
    CHECK(rxn->getProducts()[0]->getPropIfPresent(
        common_properties::molFileLinkNodes, lns));
    CHECK(lns == "2 5 2 5 4 5 7");
  }
  // note that these only work with the current parser if the
  // variable-attachment point part is grouped with the molecule it's attached
  // to. This probably isn't the end of the world
  SECTION("variable attachment points") {
    // clang-format off
    auto rxn = "CN.(CO*.CC1=CN=CC=C1)>>(CNC1=C(C)C=CC=N1.CO*) |m:4:11.9.10,23:17.19.18|"_rxnsmarts;
    // clang-format on
    REQUIRE(rxn);
    CHECK(rxn->getReactants().size() == 2);
    CHECK(rxn->getProducts().size() == 1);
    auto bnd = rxn->getReactants()[1]->getBondBetweenAtoms(1, 2);
    REQUIRE(bnd);
    CHECK(bnd->hasProp(common_properties::_MolFileBondAttach));
    CHECK(bnd->getProp<std::string>(common_properties::_MolFileBondAttach) ==
          "ANY");
    CHECK(bnd->hasProp(common_properties::_MolFileBondEndPts));
    CHECK(bnd->getProp<std::string>(common_properties::_MolFileBondEndPts) ==
          "(3 10 8 9)");

    bnd = rxn->getProducts()[0]->getBondBetweenAtoms(10, 11);
    REQUIRE(bnd);
    CHECK(bnd->hasProp(common_properties::_MolFileBondAttach));
    CHECK(bnd->getProp<std::string>(common_properties::_MolFileBondAttach) ==
          "ANY");
    CHECK(bnd->hasProp(common_properties::_MolFileBondEndPts));
    CHECK(bnd->getProp<std::string>(common_properties::_MolFileBondEndPts) ==
          "(3 6 8 7)");
  }
  SECTION("cis/trans markers") {
    auto rxn =
        "C1C=CC=CCC=CC=C1>>C1C=CC=CNC=CC=C1 |c:1,3,6,8,11,13,16,18|"_rxnsmiles;
    REQUIRE(rxn);
    CHECK(rxn->getReactants().size() == 1);
    CHECK(rxn->getProducts().size() == 1);
    CHECK(rxn->getReactants()[0]->getBondWithIdx(1)->getStereo() ==
          Bond::BondStereo::STEREOCIS);
    CHECK(rxn->getProducts()[0]->getBondWithIdx(1)->getStereo() ==
          Bond::BondStereo::STEREOCIS);

    auto roundtrip = v2::ReactionParser::ReactionFromSmarts(
        ChemicalReactionToCXRxnSmarts(*rxn));
    REQUIRE(roundtrip);
    CHECK(roundtrip->getReactants().size() == 1);
    CHECK(roundtrip->getProducts().size() == 1);
    CHECK(roundtrip->getReactants()[0]->getBondWithIdx(1)->getStereo() ==
          Bond::BondStereo::STEREOCIS);
    CHECK(roundtrip->getProducts()[0]->getBondWithIdx(1)->getStereo() ==
          Bond::BondStereo::STEREOCIS);
  }
  SECTION("wedged bonds") {
    auto rxn = "CC(O)(F)Cl>>CC(N)(F)Cl |w:1.0,6.5|"_rxnsmiles;
    REQUIRE(rxn);
    CHECK(rxn->getReactants().size() == 1);
    CHECK(rxn->getProducts().size() == 1);
    unsigned int bondcfg = 0;
    CHECK(rxn->getReactants()[0]->getBondWithIdx(0)->getPropIfPresent(
        "_MolFileBondCfg", bondcfg));
    CHECK(bondcfg == 2);
    CHECK(rxn->getProducts()[0]->getBondWithIdx(1)->getPropIfPresent(
        "_MolFileBondCfg", bondcfg));
    CHECK(bondcfg == 2);

    auto roundtrip = v2::ReactionParser::ReactionFromSmarts(
        ChemicalReactionToCXRxnSmarts(*rxn));
    REQUIRE(roundtrip);
    CHECK(roundtrip->getReactants().size() == 1);
    CHECK(roundtrip->getProducts().size() == 1);
    bondcfg = 0;
    CHECK(roundtrip->getReactants()[0]->getBondWithIdx(0)->getPropIfPresent(
        "_MolFileBondCfg", bondcfg));
    CHECK(bondcfg == 2);
    CHECK(roundtrip->getProducts()[0]->getBondWithIdx(1)->getPropIfPresent(
        "_MolFileBondCfg", bondcfg));
    CHECK(bondcfg == 2);

    SmilesWriteParams params;
    auto flags = RDKit::SmilesWrite::CX_ALL ^ RDKit::SmilesWrite::CX_ATOM_PROPS;
    auto output_cxsmarts = ChemicalReactionToCXRxnSmarts(*rxn, params, flags);
    auto expected_cxsmarts =
        "[#6]-[#6](-[#8])(-[#9])-[#17]>>[#6]-[#6](-[#7])(-[#9])-[#17] |w:1.0,6.5|";
    CHECK(output_cxsmarts == expected_cxsmarts);
  }
}

TEST_CASE("V3K rxn blocks") {
  SECTION("writing basics") {
    // clang-format off
    auto rxn =
        "[cH:1]1[cH:2][cH:3][cH:4][cH:5][c:6]1-[Br].[#6:7]B(O)O>>[cH:1]1[cH:2][cH:3][cH:4][cH:5][c:6]1-[#6:7]"_rxnsmarts;
    // clang-format on
    REQUIRE(rxn);
    auto rxnb = ChemicalReactionToV3KRxnBlock(*rxn);
    bool separateAgents = false;
    bool forceV3000 = true;
    auto rxnb2 = ChemicalReactionToRxnBlock(*rxn, separateAgents, forceV3000);
    CHECK(rxnb == rxnb2);

    std::unique_ptr<ChemicalReaction> rxn2{RxnBlockToChemicalReaction(rxnb)};
    REQUIRE(rxn2);
    CHECK(rxn->getNumAgentTemplates() == rxn2->getNumAgentTemplates());
    CHECK(rxn->getNumReactantTemplates() == rxn2->getNumReactantTemplates());
    CHECK(rxn->getNumProductTemplates() == rxn2->getNumProductTemplates());
  }

  SECTION("github5324") {
    // Test sgroup in a ring - this example failed with improperr tail crossings
    auto mol = "C-1-C-C-C-C-O-1 |Sg:n:4:n:ht|"_smarts;
    MolOps::findSSSR(*mol);
    auto mbk = FileParserUtils::getV3000CTAB(*mol, -1);
    CHECK(mbk.find("ATOMS=(1 5) XBONDS=(2 4 5) XBHEAD=(1 4) XBCORR=(2 4 5)") !=
          std::string::npos);
    std::unique_ptr<ChemicalReaction> rxn(
        RxnSmartsToChemicalReaction(">>C-1-C-C-C-C-O-1 |Sg:n:4:n:ht|"));
    auto rxnb = ChemicalReactionToV3KRxnBlock(*rxn);
    CHECK(rxnb.find("ATOMS=(1 5) XBONDS=(2 4 5) XBHEAD=(1 4) XBCORR=(2 4 5)") !=
          std::string::npos);
  }
}

TEST_CASE("CDXML Parser") {
  std::string cdxmlbase =
      std::string(getenv("RDBASE")) + "/Code/GraphMol/test_data/CDXML/";
  SECTION("CDXML REACTION") {
    auto fname = cdxmlbase + "rxn2.cdxml";
    std::vector<std::string> expected = {
        "Cl[c:1]1[cH:4][cH:3][cH:2][cH:6][cH:5]1",
        "OC(O)B[c:7]1[cH:8][cH:9][cH:10][cH:11][cH:12]1",
        "[cH:1]1[cH:4][cH:3][cH:2][c:6](-[c:7]2[cH:8][cH:9][cH:10][cH:11][cH:12]2)[cH:5]1"};

    auto rxns = CDXMLFileToChemicalReactions(fname);
    CHECK(rxns.size() == 1);
    unsigned int i = 0;
    int count = 0;
    for (auto &mol : rxns[0]->getReactants()) {
      CHECK(mol->getProp<unsigned int>("CDX_SCHEME_ID") == 397);
      CHECK(mol->getProp<unsigned int>("CDX_STEP_ID") == 398);
      CHECK(mol->getProp<unsigned int>("CDX_REAGENT_ID") == i++);
      CHECK(MolToSmiles(*mol) == expected[count++]);
    }
    i = 0;
    for (auto &mol : rxns[0]->getProducts()) {
      CHECK(mol->getProp<unsigned int>("CDX_SCHEME_ID") == 397);
      CHECK(mol->getProp<unsigned int>("CDX_STEP_ID") == 398);
      CHECK(mol->getProp<unsigned int>("CDX_PRODUCT_ID") == i++);
      CHECK(MolToSmiles(*mol) == expected[count++]);
    }

    auto smarts = ChemicalReactionToRxnSmarts(*rxns[0]);
    CHECK(
        smarts ==
        "[#6&D2:2]1:[#6&D2:3]:[#6&D2:4]:[#6&D3:1](:[#6&D2:5]:[#6&D2:6]:1)-[#17&D1].[#6&D3](-[#5&D2]-[#6&D3:7]1:[#6&D2:8]:[#6&D2:9]:[#6&D2:10]:[#6&D2:11]:[#6&D2:12]:1)(-[#8&D1])-[#8&D1]>>[#6&D2:1]1:[#6&D2:5]:[#6&D3:6](:[#6&D2:2]:[#6&D2:3]:[#6&D2:4]:1)-[#6&D3:7]1:[#6&D2:8]:[#6&D2:9]:[#6&D2:10]:[#6&D2:11]:[#6&D2:12]:1");
  }

  SECTION("Github #7528 CDXML Grouped Agents in Reactions") {
    // The failing case had fragments grouped with labels, ensure the grouped
    // cersion and the ungrouped versions have the same results
    auto fname = cdxmlbase + "github7467-grouped-fragments.cdxml";
    auto rxns = CDXMLFileToChemicalReactions(fname);
    CHECK(rxns.size() == 1);
    fname = cdxmlbase + "github7467-ungrouped-fragments.cdxml";
    auto rxns2 = CDXMLFileToChemicalReactions(fname);

    CHECK(ChemicalReactionToRxnSmarts(*rxns[0]) ==
          ChemicalReactionToRxnSmarts(*rxns2[0]));

    // Check to see if our understanding of grouped reagents in reactions is
    // correct
    fname = cdxmlbase + "reaction-with-grouped-templates.cdxml";
    auto rxns3 = CDXMLFileToChemicalReactions(fname);
    CHECK(rxns3.size() == 1);
    std::string rxnb = R"RXN($RXN

      Mrv2004  062120241319

  2  0
$MOL

  Mrv2004 06212413192D

  5  5  0  0  0  0            999 V2000
    2.6221   -4.6475    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.6221   -5.4725    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.4070   -5.7274    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.8918   -5.0600    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.4070   -4.3926    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0  0  0  0
  2  3  1  0  0  0  0
  3  4  2  0  0  0  0
  4  5  1  0  0  0  0
  5  1  1  0  0  0  0
M  END
$MOL

  Mrv2004 06212413192D

 11 11  0  0  0  0            999 V2000
    6.9305   -4.5100    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.9305   -5.3350    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.6450   -5.7475    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    8.3594   -5.3350    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    8.3594   -4.5100    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.6450   -4.0975    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    8.6171   -4.4825    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    8.6171   -5.3075    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    9.4020   -5.5624    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    9.8868   -4.8950    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    9.4020   -4.2276    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  6  1  1  0  0  0  0
  2  3  1  0  0  0  0
  3  4  1  0  0  0  0
  4  5  1  0  0  0  0
  5  6  1  0  0  0  0
  7  8  2  0  0  0  0
 11  7  1  0  0  0  0
  8  9  1  0  0  0  0
  9 10  2  0  0  0  0
 10 11  1  0  0  0  0
M  END
)RXN";
    std::unique_ptr<ChemicalReaction> rxn_mb{RxnBlockToChemicalReaction(rxnb)};
    // CDXMLToReaction is sanitized by default, this might be a mistake...
    unsigned int failed;
    RxnOps::sanitizeRxn(
        *rxn_mb, failed,
        RxnOps::SANITIZE_ADJUST_REACTANTS | RxnOps::SANITIZE_ADJUST_PRODUCTS,
        RxnOps::MatchOnlyAtRgroupsAdjustParams());

    CHECK(rxns3[0]->getNumReactantTemplates() ==
          rxn_mb->getNumReactantTemplates());
    CHECK(ChemicalReactionToRxnSmarts(*rxns3[0]) ==
          ChemicalReactionToRxnSmarts(*rxn_mb));
  }
}

TEST_CASE("Github #5785: separateAgents ignored for V3000 RXN files") {
  SECTION("general separateAgents parse testing: V2000") {
    std::string rxnb = R"RXN($RXN

      RDKit

  1  1  1
$MOL

     RDKit          2D

  2  1  0  0  0  0  0  0  0  0999 V2000
    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  1  0  0
    1.2990    0.7500    0.0000 O   0  0  0  0  0  0  0  0  0  2  0  0
  1  2  1  0
M  END
$MOL

     RDKit          2D

  2  1  0  0  0  0  0  0  0  0999 V2000
    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  1  0  0
    1.2990    0.7500    0.0000 O   0  0  0  0  0  0  0  0  0  2  0  0
  1  2  2  0
M  END
$MOL

     RDKit          2D

  1  0  0  0  0  0  0  0  0  0999 V2000
    0.0000    0.0000    0.0000 Pt  0  0  0  0  0  0  0  0  0  0  0  0
M  END
)RXN";
    std::unique_ptr<ChemicalReaction> rxn(RxnBlockToChemicalReaction(rxnb));
    REQUIRE(rxn);
    CHECK(rxn->getNumReactantTemplates() == 1);
    CHECK(rxn->getNumProductTemplates() == 1);
    CHECK(rxn->getNumAgentTemplates() == 1);

    auto orxn = ChemicalReactionToRxnBlock(*rxn, true);
    CHECK(orxn.find("  1  1  1") != std::string::npos);
  }
  SECTION("general separateAgents parse testing: V3000") {
    std::string rxnb = R"RXN($RXN V3000

      Mrv2211  121520220816

M  V30 COUNTS 1 1 1
M  V30 BEGIN REACTANT
M  V30 BEGIN CTAB
M  V30 COUNTS 2 1 0 0 0
M  V30 BEGIN ATOM
M  V30 1 C -4.8977 -0.385 0 1
M  V30 2 O -3.564 0.385 0 2
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 1 1 2
M  V30 END BOND
M  V30 END CTAB
M  V30 END REACTANT
M  V30 BEGIN PRODUCT
M  V30 BEGIN CTAB
M  V30 COUNTS 2 1 0 0 0
M  V30 BEGIN ATOM
M  V30 1 C 4.444 -0.385 0 1
M  V30 2 O 5.7777 0.385 0 2
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 2 1 2
M  V30 END BOND
M  V30 END CTAB
M  V30 END PRODUCT
M  V30 BEGIN AGENT
M  V30 BEGIN CTAB
M  V30 COUNTS 1 0 0 0 0
M  V30 BEGIN ATOM
M  V30 1 Pt 0 1.54 0 0
M  V30 END ATOM
M  V30 END CTAB
M  V30 END AGENT
M  END
)RXN";
    std::unique_ptr<ChemicalReaction> rxn(RxnBlockToChemicalReaction(rxnb));
    REQUIRE(rxn);
    CHECK(rxn->getNumReactantTemplates() == 1);
    CHECK(rxn->getNumProductTemplates() == 1);
    CHECK(rxn->getNumAgentTemplates() == 1);

    {  // with separate agents
      auto orxn = ChemicalReactionToV3KRxnBlock(*rxn, true);
      CHECK(orxn.find("COUNTS 1 1 1") != std::string::npos);
      CHECK(orxn.find("BEGIN AGENT") != std::string::npos);
      CHECK(orxn.find("END AGENT") != std::string::npos);
    }
    {  // without separate agents
      auto orxn = ChemicalReactionToV3KRxnBlock(*rxn, false);
      CHECK(orxn.find("COUNTS 2 1") != std::string::npos);
      CHECK(orxn.find("BEGIN AGENT") == std::string::npos);
      CHECK(orxn.find("END AGENT") == std::string::npos);
    }
  }
}

TEST_CASE(
    "Github #6015: Reactions do not propagate query information to products") {
  SECTION("basics, as-reported") {
    std::unique_ptr<ChemicalReaction> rxn{
        RxnSmartsToChemicalReaction("[C:1][O:2]>>[C:1][O:2]")};
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    std::vector<ROMOL_SPTR> reactants{ROMOL_SPTR(SmartsToMol("[C&R&X3][OR]F"))};
    REQUIRE(reactants.size() == 1);
    REQUIRE(reactants[0]);
    auto products = rxn->runReactants(reactants);
    REQUIRE(products.size() == 1);
    CHECK(products[0][0]->getAtomWithIdx(0)->hasQuery());
    CHECK(products[0][0]->getAtomWithIdx(1)->hasQuery());
    CHECK(products[0][0]->getAtomWithIdx(2)->hasQuery());
    CHECK(products[0][0]->getBondWithIdx(0)->hasQuery());
    CHECK(products[0][0]->getBondWithIdx(1)->hasQuery());
    CHECK(MolToSmarts(*products[0][0]) == "[C&R&X3][O&R]F");
  }
  SECTION("more complex") {
    std::unique_ptr<ChemicalReaction> rxn{
        RxnSmartsToChemicalReaction("[C:1][O:2]>>[C:1][O:2]")};
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    std::vector<ROMOL_SPTR> reactants{
        ROMOL_SPTR(SmartsToMol("CC[C&R&X3](CC)[OR]NCC"))};
    REQUIRE(reactants.size() == 1);
    REQUIRE(reactants[0]);
    auto products = rxn->runReactants(reactants);
    REQUIRE(products.size() == 1);
    for (const auto atom : products[0][0]->atoms()) {
      INFO(atom->getIdx());
      CHECK(atom->hasQuery());
    }
    for (const auto bond : products[0][0]->bonds()) {
      INFO(bond->getIdx());
      CHECK(bond->hasQuery());
    }
  }
}

TEST_CASE(
    "Github #6195: Failed to parse reaction with reacting center status set on bond") {
  SECTION("check parse") {
    std::string rxnBlock = R"RXN($RXN
ACS Document 1996
  ChemDraw03132312282D

  1  1
$MOL



  4  3  0  0  0  0  0  0  0  0999 V2000
   -0.0000    0.6187    0.0000 O   0  0  0  0  0  0  0  0  0  1  0  0
   -0.0000   -0.2062    0.0000 C   0  0  0  0  0  0  0  0  0  2  0  0
   -0.7145   -0.6187    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0
    0.7145   -0.6187    0.0000 O   0  0  0  0  0  0  0  0  0  4  0  0
  1  2  2  0        0
  2  3  1  0        0
  2  4  1  0        0
M  END
$MOL



  5  4  0  0  0  0  0  0  0  0999 V2000
   -0.3572    0.6187    0.0000 O   0  0  0  0  0  0  0  0  0  1  0  0
   -0.3572   -0.2062    0.0000 C   0  0  0  0  0  0  0  0  0  2  0  0
   -1.0717   -0.6187    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0
    0.3572   -0.6187    0.0000 O   0  0  0  0  0  0  0  0  0  4  0  0
    1.0717   -0.2062    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0        0
  2  3  1  0        0
  2  4  1  0        0
  4  5  1  0        4
M  END
)RXN";
    std::unique_ptr<ChemicalReaction> rxn(RxnBlockToChemicalReaction(rxnBlock));
    REQUIRE(rxn);
    CHECK(rxn->getNumReactantTemplates() == 1);
    CHECK(rxn->getNumProductTemplates() == 1);
    CHECK(rxn->getNumAgentTemplates() == 0);
    CHECK(rxn->getProducts()[0]->getBondWithIdx(3)->getProp<int>(
              "molReactStatus") == 4);
  }
}

TEST_CASE("Github #6211: substructmatchparams for chemical reactions") {
  SECTION("Basics") {
    auto rxn = "[C:1][C@:2]([N:3])[O:4]>>[C:1][C@@:2]([N:3])[O:4]"_rxnsmarts;
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    {
      // defaults
      std::vector<std::tuple<std::string, std::string>> data = {
          {"CC[C@H](N)O", "CC[C@@H](N)O"},
          {"CC[C@@H](N)O", "CC[C@H](N)O"},
          {"CCC(N)O", "CCC(N)O"}};
      for (const auto &[inSmi, outSmi] : data) {
        INFO(inSmi);
        MOL_SPTR_VECT reacts = {ROMOL_SPTR(SmilesToMol(inSmi))};
        REQUIRE(reacts[0]);
        auto prods = rxn->runReactants(reacts);
        if (outSmi != "") {
          REQUIRE(prods.size() == 1);
          CHECK(MolToSmiles(*prods[0][0]) == outSmi);
          CHECK(isMoleculeReactantOfReaction(*rxn, *reacts.front()));
          std::unique_ptr<RWMol> prod{SmilesToMol(outSmi)};
          REQUIRE(prod);
          CHECK(isMoleculeProductOfReaction(*rxn, *prod));
        } else {
          CHECK(prods.empty());
          CHECK(!isMoleculeReactantOfReaction(*rxn, *reacts.front()));
        }
      }
    }
    {
      // use chiral matching (makes sure the parameters are actually used)
      std::vector<std::tuple<std::string, std::string>> data = {
          {"CC[C@H](N)O", "CC[C@@H](N)O"},
          {"CC[C@@H](N)O", ""},
          {"CCC(N)O", ""}};
      rxn->getSubstructParams().useChirality = true;
      for (const auto &[inSmi, outSmi] : data) {
        INFO(inSmi);
        MOL_SPTR_VECT reacts = {ROMOL_SPTR(SmilesToMol(inSmi))};
        REQUIRE(reacts[0]);
        auto prods = rxn->runReactants(reacts);
        if (outSmi != "") {
          REQUIRE(prods.size() == 1);
          CHECK(MolToSmiles(*prods[0][0]) == outSmi);
          CHECK(isMoleculeReactantOfReaction(*rxn, *reacts.front()));
          std::unique_ptr<RWMol> prod{SmilesToMol(outSmi)};
          REQUIRE(prod);
          CHECK(isMoleculeProductOfReaction(*rxn, *prod));
        } else {
          CHECK(prods.empty());
          CHECK(!isMoleculeReactantOfReaction(*rxn, *reacts.front()));
        }
      }
      // make sure the parameters are copied
      ChemicalReaction cpy(*rxn);
      for (const auto &[inSmi, outSmi] : data) {
        INFO(inSmi);
        MOL_SPTR_VECT reacts = {ROMOL_SPTR(SmilesToMol(inSmi))};
        REQUIRE(reacts[0]);
        auto prods = cpy.runReactants(reacts);
        if (outSmi != "") {
          REQUIRE(prods.size() == 1);
          CHECK(MolToSmiles(*prods[0][0]) == outSmi);
        } else {
          CHECK(prods.empty());
        }
      }
    }
  }

  SECTION("serialization") {
    auto rxn = "[C:1][C@:2]([N:3])[O:4]>>[C:1][C@@:2]([N:3])[O:4]"_rxnsmarts;
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    rxn->getSubstructParams().useChirality = true;
    std::string pkl;
    ReactionPickler::pickleReaction(*rxn, pkl);
    ChemicalReaction rxn2;
    ReactionPickler::reactionFromPickle(pkl, rxn2);
    CHECK(rxn2.getSubstructParams().useChirality == true);
  }
}

TEST_CASE("problematic in-place example from MolStandardize") {
  SECTION("basics") {
    RWMOL_SPTR m = "[nH]1ccc(=[N+](C)C)cc1"_smiles;
    REQUIRE(m);
    auto rxn =
        "[n;+0!H0:1]:[a:2]:[a:3]:[c:4]=[N!$(*[O-]),O;+1H0:5]>>[n+1:1]:[*:2]:[*:3]:[*:4]-[*+0:5]"_rxnsmarts;
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    rxn->runReactant(*m);
    CHECK(MolToSmiles(*m) == "CN(C)c1cc[nH+]cc1");
  }
}

TEST_CASE(
    "github #5819: Support writing detailed SMARTS queries to CTABs using the SMARTSQ mechanism") {
  SECTION("as reported") {
    auto rxn = "[C;$(C([#6])=O):1][OH:2]>>[C:1][NH2:2]"_rxnsmarts;
    REQUIRE(rxn);
    auto ctab = ChemicalReactionToV3KRxnBlock(*rxn);

    // make sure the templates haven't been modified by that operation
    CHECK(getSubstanceGroups(*rxn->getReactants()[0]).empty());

    CHECK(ctab.find("SMARTSQ") != std::string::npos);
    CHECK(ctab.find("FIELDDATA=\"[C&$(C([#6])=O):1]\"") != std::string::npos);
    CHECK(ctab.find("FIELDDATA=\"[N&H2:2]\"") != std::string::npos);

    // make sure we can properly parse that
    std::unique_ptr<ChemicalReaction> nrxn{RxnBlockToChemicalReaction(ctab)};
    REQUIRE(nrxn);
    CHECK(MolToSmarts(*nrxn->getReactants()[0]) ==
          "[C&$(C([#6])=O):1][O&H1:2]");
  }

  SECTION("isotopes are weird") {
    auto rxnb = R"CTAB($RXN V3000

      Mrv2211  111620231722

M  V30 COUNTS 1 1
M  V30 BEGIN REACTANT
M  V30 BEGIN CTAB
M  V30 COUNTS 4 3 0 0 0
M  V30 BEGIN ATOM
M  V30 1 C 6.9035 -10.0923 0 1
M  V30 2 O 6.9035 -8.5923 0 2 MASS=18
M  V30 3 Cl 5.6045 -10.8423 0 0
M  V30 4 C 8.2025 -10.8423 0 4
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 1 1 4
M  V30 2 2 1 2
M  V30 3 1 1 3
M  V30 END BOND
M  V30 END CTAB
M  V30 END REACTANT
M  V30 BEGIN PRODUCT
M  V30 BEGIN CTAB
M  V30 COUNTS 4 3 0 0 0
M  V30 BEGIN ATOM
M  V30 1 C 22.0416 -9.3829 0 0
M  V30 2 C 23.3406 -8.6329 0 1
M  V30 3 O 23.3406 -7.1329 0 2 MASS=18
M  V30 4 C 24.6396 -9.3829 0 4
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 1 1 2
M  V30 2 1 2 4
M  V30 3 2 2 3
M  V30 END BOND
M  V30 END CTAB
M  V30 END PRODUCT
M  END
)CTAB";
    std::unique_ptr<ChemicalReaction> rxn{RxnBlockToChemicalReaction(rxnb)};
    REQUIRE(rxn);
    CHECK(rxn->getReactants()[0]->getAtomWithIdx(0)->hasQuery());
    CHECK(rxn->getReactants()[0]->getAtomWithIdx(1)->hasQuery());
    auto ctab = ChemicalReactionToV3KRxnBlock(*rxn);
    CHECK(ctab.find("SMARTSQ") == std::string::npos);
  }
}

TEST_CASE(
    "Github #6492: In place transforms incorrectly change atomic numbers") {
  SECTION("minimal") {
    auto rxn = "[O-:1]>>[*-0:1]"_rxnsmarts;
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    auto m = "[O-]C"_smiles;
    REQUIRE(m);
    rxn->runReactant(*m);
    CHECK(MolToSmiles(*m) == "CO");
  }
  SECTION("as reported") {
    auto rxn =
        "[n;+0!H0:1]:[a:2]:[a:3]:[c:4]=[N!$(*[O-]),O;+1H0:5]>>[n+1:1]:[*:2]:[*:3]:[*:4]-[*+0:5]"_rxnsmarts;
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    auto m = "[nH]1ccc(=[N+](C)C)cc1"_smiles;
    REQUIRE(m);
    rxn->runReactant(*m);
    CHECK(MolToSmiles(*m) == "CN(C)c1cc[nH+]cc1");
  }
}

TEST_CASE("Github #7028: Spacing bug in compute2DCoordsForReaction") {
  SECTION("minimal") {
    auto rxn = "C1CCCCC1.C1CCCCC1.C1CCCCC1>>C1CCCCC1.C1CCCCC1"_rxnsmiles;
    REQUIRE(rxn);
    RDDepict::compute2DCoordsForReaction(*rxn);
    std::vector<std::pair<double, double>> xbounds;
    for (const auto &reactant : rxn->getReactants()) {
      REQUIRE(reactant->getNumConformers() == 1);
      std::pair<double, double> bounds = {1e8, -1e8};
      auto conf = reactant->getConformer();
      for (unsigned int i = 0; i < conf.getNumAtoms(); ++i) {
        auto pos = conf.getAtomPos(i);
        bounds.first = std::min(bounds.first, pos.x);
        bounds.second = std::max(bounds.second, pos.x);
      }
      xbounds.push_back(bounds);
    }
    for (const auto &product : rxn->getProducts()) {
      REQUIRE(product->getNumConformers() == 1);
      std::pair<double, double> bounds = {1e8, -1e8};
      auto conf = product->getConformer();
      for (unsigned int i = 0; i < conf.getNumAtoms(); ++i) {
        auto pos = conf.getAtomPos(i);
        bounds.first = std::min(bounds.first, pos.x);
        bounds.second = std::max(bounds.second, pos.x);
      }
      xbounds.push_back(bounds);
    }
    REQUIRE(xbounds.size() == 5);
    CHECK(xbounds[0].second < xbounds[1].first);
    CHECK(xbounds[1].second < xbounds[2].first);
    CHECK(xbounds[2].second < xbounds[3].first);
    CHECK(xbounds[3].second < xbounds[4].first);
  }
}

TEST_CASE("allow sanitization of reaction products") {
  std::string smi = "C1=CC=CC=C1>>C1=CC=CC=N1";
  bool useSmiles = true;
  auto rxn = std::unique_ptr<ChemicalReaction>(
      RxnSmartsToChemicalReaction(smi, nullptr, useSmiles));
  REQUIRE(rxn);
  rxn->initReactantMatchers();
  CHECK(rxn->getReactants()[0]->getBondWithIdx(0)->getIsAromatic() == false);
  CHECK(rxn->getProducts()[0]->getBondWithIdx(0)->getIsAromatic() == false);
  {
    // by default we do product sanitization
    ChemicalReaction rxncp(*rxn);
    RxnOps::sanitizeRxn(rxncp);
    CHECK(rxncp.getReactants()[0]->getBondWithIdx(0)->getIsAromatic() == true);
    CHECK(rxncp.getProducts()[0]->getBondWithIdx(0)->getIsAromatic() == true);
  }
  {
    // but we can turn it off
    ChemicalReaction rxncp(*rxn);
    unsigned int sanitizeOps =
        RxnOps::SANITIZE_ALL ^ RxnOps::SANITIZE_ADJUST_PRODUCTS;
    unsigned int failed;
    RxnOps::sanitizeRxn(rxncp, failed, sanitizeOps);
    CHECK(rxncp.getReactants()[0]->getBondWithIdx(0)->getIsAromatic() == true);
    CHECK(rxncp.getProducts()[0]->getBondWithIdx(0)->getIsAromatic() == false);
  }
}

TEST_CASE("sanitizeRxnAsMols") {
  SECTION("basics") {
    // silly example for testing
    auto rxn = "C1=CC=CC=C1>CN(=O)=O>C1=CC=CC=N1"_rxnsmiles;
    REQUIRE(rxn);
    CHECK(!rxn->getReactants()[0]->getBondWithIdx(0)->getIsAromatic());
    CHECK(!rxn->getProducts()[0]->getBondWithIdx(0)->getIsAromatic());
    CHECK(rxn->getAgents()[0]->getAtomWithIdx(1)->getFormalCharge() == 0);

    RxnOps::sanitizeRxnAsMols(*rxn);
    CHECK(rxn->getReactants()[0]->getBondWithIdx(0)->getIsAromatic());
    CHECK(rxn->getProducts()[0]->getBondWithIdx(0)->getIsAromatic());
    CHECK(rxn->getAgents()[0]->getAtomWithIdx(1)->getFormalCharge() == 1);
  }
  SECTION("sanitization options") {
    // silly example for testing
    auto rxn = "C1=CC=CC=C1>CN(=O)=O>C1=CC=CC=N1"_rxnsmiles;
    REQUIRE(rxn);
    CHECK(!rxn->getReactants()[0]->getBondWithIdx(0)->getIsAromatic());
    CHECK(!rxn->getProducts()[0]->getBondWithIdx(0)->getIsAromatic());
    CHECK(rxn->getAgents()[0]->getAtomWithIdx(1)->getFormalCharge() == 0);

    RxnOps::sanitizeRxnAsMols(*rxn, MolOps::SanitizeFlags::SANITIZE_CLEANUP);
    CHECK(!rxn->getReactants()[0]->getBondWithIdx(0)->getIsAromatic());
    CHECK(!rxn->getProducts()[0]->getBondWithIdx(0)->getIsAromatic());
    CHECK(rxn->getAgents()[0]->getAtomWithIdx(1)->getFormalCharge() == 1);
  }
  SECTION("sanitization failures") {
    {  // reactant
      auto rxn = "c1cccc1>CN(=O)=O>CC"_rxnsmiles;
      REQUIRE(rxn);
      CHECK_THROWS_AS(RxnOps::sanitizeRxnAsMols(*rxn), MolSanitizeException);
    }
    {  // product
      auto rxn = "CC>CN(=O)=O>c1cccn1"_rxnsmiles;
      REQUIRE(rxn);
      CHECK_THROWS_AS(RxnOps::sanitizeRxnAsMols(*rxn), MolSanitizeException);
    }
    {  // agent
      auto rxn = "CC>CO(=O)=O>CC"_rxnsmiles;
      REQUIRE(rxn);
      CHECK_THROWS_AS(RxnOps::sanitizeRxnAsMols(*rxn), MolSanitizeException);
    }
  }
}

TEST_CASE("Github #7372: SMILES output option to disable dative bonds") {
  SECTION("basics") {
    auto rxn =
        "[C:1]-[C:2].[NH3:3]->[Fe:4]-[NH2:5]>>[C:1]=[C:2].[NH3:3]->[Fe:4]-[NH2:5]"_rxnsmarts;
    REQUIRE(rxn);
    auto smi = ChemicalReactionToRxnSmiles(*rxn);
    CHECK(
        smi ==
        "[CH3:1][CH3:2].[NH3:3]->[Fe:4][NH2:5]>>[CH2:1]=[CH2:2].[NH3:3]->[Fe:4][NH2:5]");
    smi = ChemicalReactionToRxnSmarts(*rxn);
    CHECK(
        smi ==
        "[C:1]-[C:2].[N&H3:3]->[#26:4]-[N&H2:5]>>[C:1]=[C:2].[N&H3:3]->[#26:4]-[N&H2:5]");
    SmilesWriteParams ps;
    ps.includeDativeBonds = false;
    smi = ChemicalReactionToRxnSmiles(*rxn, ps);
    CHECK(
        smi ==
        "[CH3:1][CH3:2].[NH3:3][Fe:4][NH2:5]>>[CH2:1]=[CH2:2].[NH3:3][Fe:4][NH2:5]");
    smi = ChemicalReactionToRxnSmarts(*rxn, ps);
    CHECK(
        smi ==
        "[C:1]-[C:2].[N&H3:3]-[#26:4]-[N&H2:5]>>[C:1]=[C:2].[N&H3:3]-[#26:4]-[N&H2:5]");
  }
}

TEST_CASE(
    "Github #7674: reaction pickling does not honor PicklePropertiesOptions") {
  auto pklOpts = MolPickler::getDefaultPickleProperties();
  SECTION("as reported") {
    auto rxnb = R"RXN($RXN

  Mrv17183    050301241900

  1  1
$MOL

  Mrv1718305032419002D

  1  0  0  0  0  0            999 V2000
    3.1458   -0.1208    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
V    1 Amine.Cyclic
M  END
$MOL

  Mrv1718305032419002D

  1  0  0  0  0  0            999 V2000
    3.1458   -0.1208    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
M  END
"""

molblock = """FOO
FOO  0   0.00000     0.00000

  1  0  0  0  0  0  0  0  0  0999 V2000
    1.3051    0.6772    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
V    1 Amine.Cyclic
M  END)RXN";
    auto rxn = v2::ReactionParser::ReactionFromRxnBlock(rxnb);
    REQUIRE(rxn);
    REQUIRE(rxn->getReactants()[0]->getAtomWithIdx(0)->hasProp("molFileValue"));
    MolPickler::setDefaultPickleProperties(PicklerOps::AllProps);
    std::string pkl;
    ReactionPickler::pickleReaction(*rxn, pkl, PicklerOps::AllProps);
    ChemicalReaction rxn2;
    ReactionPickler::reactionFromPickle(pkl, rxn2);
    CHECK(rxn2.getReactants()[0]->getAtomWithIdx(0)->hasProp("molFileValue"));
  }
  MolPickler::setDefaultPickleProperties(pklOpts);
}

TEST_CASE("Github #7675: pickling fails with a HasProp query") {
  SECTION("as reported") {
    auto rxnb = R"RXN($RXN

  Mrv17183    050301241900

  1  1
$MOL

  Mrv1718305032419002D

  1  0  0  0  0  0            999 V2000
    3.1458   -0.1208    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
V    1 Amine.Cyclic
M  END
$MOL

  Mrv1718305032419002D

  1  0  0  0  0  0            999 V2000
    3.1458   -0.1208    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
M  END)RXN";
    auto rxn = v2::ReactionParser::ReactionFromRxnBlock(rxnb);
    REQUIRE(rxn);

    std::string pkl;
    ReactionPickler::pickleReaction(*rxn, pkl, PicklerOps::AllProps);
    ChemicalReaction rxn2;
    ReactionPickler::reactionFromPickle(pkl, rxn2);
    CHECK(rxn2.getReactants()[0]->getAtomWithIdx(0)->hasProp("molFileValue"));
  }
}

TEST_CASE("Github #7669: propate stereo groups from product templates") {
  auto rxnBlock = R"RXN($RXN V3000

      Mrv2401  072420241107

M  V30 COUNTS 1 1
M  V30 BEGIN REACTANT
M  V30 BEGIN CTAB
M  V30 COUNTS 5 4 0 0 1
M  V30 BEGIN ATOM
M  V30 1 C -1.5417 2.7917 0 1
M  V30 2 F -1.5417 1.2517 0 4
M  V30 3 C -3.0817 2.7917 0 3
M  V30 4 Cl -1.5417 4.3317 0 2
M  V30 5 C -0.0017 2.7917 0 0
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 1 1 2
M  V30 2 1 1 4
M  V30 3 1 1 3
M  V30 4 1 1 5
M  V30 END BOND
M  V30 END CTAB
M  V30 END REACTANT
M  V30 BEGIN PRODUCT
M  V30 BEGIN CTAB
M  V30 COUNTS 5 4 0 0 0
M  V30 BEGIN ATOM
M  V30 1 C 9.2083 2.9167 0 1
M  V30 2 C 7.6683 2.9167 0 3
M  V30 3 F 9.2083 1.3767 0 4
M  V30 4 Cl 9.2083 4.4567 0 2
M  V30 5 I 10.7483 2.9167 0 0
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 1 1 2
M  V30 2 1 1 3
M  V30 3 1 1 4
M  V30 4 1 1 5 CFG=1
M  V30 END BOND
M  V30 BEGIN COLLECTION
M  V30 MDLV30/STERAC1 ATOMS=(1 1)
M  V30 END COLLECTION
M  V30 END CTAB
M  V30 END PRODUCT
M  END)RXN";
  auto rxn = v2::ReactionParser::ReactionFromRxnBlock(rxnBlock);
  REQUIRE(rxn);
  CHECK(rxn->getProducts()[0]->getStereoGroups().size() == 1);
  rxn->initReactantMatchers();
  SECTION("as reported") {
    auto mol = R"CTAB(
  MJ231601

  5  4  0  0  1  0  0  0  0  0999 V2000
   -0.8258    1.4955    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.8258    0.6705    0.0000 F   0  0  0  0  0  0  0  0  0  0  0  0
   -1.6508    1.4955    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.8258    2.3205    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0
   -0.0008    1.4955    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  1  4  1  0  0  0  0
  1  3  1  0  0  0  0
  1  5  1  0  0  0  0
M  END)CTAB"_ctab;
    REQUIRE(mol);
    ROMOL_SPTR reactant(std::move(mol));
    auto ps = rxn->runReactant(reactant, 0);
    REQUIRE(ps.size() == 2);
    REQUIRE(ps[0].size() == 1);

    CHECK(ps[0][0]->getStereoGroups().size() == 1);
    CHECK(ps[0][0]->getStereoGroups()[0].getGroupType() ==
          StereoGroupType::STEREO_AND);
    CHECK(ps[1][0]->getStereoGroups().size() == 1);
    CHECK(ps[0][0]->getStereoGroups()[0].getGroupType() ==
          StereoGroupType::STEREO_AND);

    auto sg = StereoGroup(StereoGroupType::STEREO_OR,
                          {reactant->getAtomWithIdx(0)}, {});
    reactant->setStereoGroups({sg});
    ps = rxn->runReactant(reactant, 0);
    REQUIRE(ps.size() == 2);
    REQUIRE(ps[0].size() == 1);
    CHECK(ps[0][0]->getStereoGroups().size() == 1);
    CHECK(ps[0][0]->getStereoGroups()[0].getGroupType() ==
          StereoGroupType::STEREO_AND);
    CHECK(ps[1][0]->getStereoGroups().size() == 1);
    CHECK(ps[0][0]->getStereoGroups()[0].getGroupType() ==
          StereoGroupType::STEREO_AND);
  }

  SECTION(
      "stereogroups in product template remove atoms from stereogroups in reactant") {
    auto mol = "C[C@](F)(Cl)C[C@](C)(O)Br |o1:1,5|"_smiles;
    ROMOL_SPTR reactant(std::move(mol));
    auto ps = rxn->runReactant(reactant, 0);
    REQUIRE(ps.size() == 2);
    REQUIRE(ps[0].size() == 1);
    CHECK(ps[0][0]->getStereoGroups().size() == 1);
    CHECK(ps[0][0]->getStereoGroups()[0].getGroupType() ==
          StereoGroupType::STEREO_AND);
    CHECK(ps[1][0]->getStereoGroups().size() == 2);
    CHECK(ps[0][0]->getStereoGroups()[0].getGroupType() ==
          StereoGroupType::STEREO_AND);
  }
}

TEST_CASE("Structural fingerprints values") {
  SECTION("basics") {
    auto rxn1 = "c1ccccc1>CC(=O)O.[Na+]>c1ccncc1"_rxnsmarts;
    REQUIRE(rxn1);
    auto rxn2 = "c1ncccc1>[Na+]>c1ncncc1"_rxnsmarts;
    REQUIRE(rxn2);

    ReactionFingerprintParams params;
    params.fpType = FingerprintType::TopologicalTorsionFP;
    params.fpSize = 4096;

    std::unique_ptr<ExplicitBitVect> fp1{
        StructuralFingerprintChemReaction(*rxn1, params)};
    std::unique_ptr<ExplicitBitVect> fp2{
        StructuralFingerprintChemReaction(*rxn2, params)};
    CHECK(TanimotoSimilarity(*fp1, *fp2) == 0.4);
  }
}

TEST_CASE("Github #6015: react_idx property") {
  SECTION("Ensure that atoms are marked with their reactant idx") {
    std::unique_ptr<ChemicalReaction> rxn{RxnSmartsToChemicalReaction(
        "[C:1][O:2].[N:3][S:4]>>[C:1][O:2][N:3][S:4]C")};
    REQUIRE(rxn);
    rxn->initReactantMatchers();
    ROMOL_SPTR mol1(SmilesToMol("CO"));
    ROMOL_SPTR mol2(SmilesToMol("NSP"));
    std::vector<ROMOL_SPTR> reactants{mol1, mol2};
    REQUIRE(reactants.size() == 2);
    REQUIRE(reactants[0]);
    REQUIRE(reactants[1]);

    auto products = rxn->runReactants(reactants);
    REQUIRE(products.size() == 1);

    CHECK(products[0][0]->getAtomWithIdx(0)->getProp<unsigned int>(
              "react_idx") == 0);
    CHECK(products[0][0]->getAtomWithIdx(0)->getProp<unsigned int>(
              "react_atom_idx") == 0);

    CHECK(products[0][0]->getAtomWithIdx(1)->getProp<unsigned int>(
              "react_idx") == 0);
    CHECK(products[0][0]->getAtomWithIdx(1)->getProp<unsigned int>(
              "react_atom_idx") == 1);

    CHECK(products[0][0]->getAtomWithIdx(2)->getProp<unsigned int>(
              "react_idx") == 1);
    CHECK(products[0][0]->getAtomWithIdx(2)->getProp<unsigned int>(
              "react_atom_idx") == 0);

    CHECK(products[0][0]->getAtomWithIdx(3)->getProp<unsigned int>(
              "react_idx") == 1);
    CHECK(products[0][0]->getAtomWithIdx(3)->getProp<unsigned int>(
              "react_atom_idx") == 1);

    CHECK(products[0][0]->getAtomWithIdx(4)->hasProp("react_atom_idx") ==
          false);
    CHECK(products[0][0]->getAtomWithIdx(4)->hasProp("react_idx") == false);

    CHECK(products[0][0]->getAtomWithIdx(5)->getProp<unsigned int>(
              "react_idx") == 1);
    CHECK(products[0][0]->getAtomWithIdx(5)->getProp<unsigned int>(
              "react_atom_idx") == 2);
  }
}
