text: // Copyright 2019 DeepMind Technologies Ltd. All rights reserved.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  #include "open_spiel/games/oware.h"
  
  #include "open_spiel/tests/basic_tests.h"
  
  namespace open_spiel {
  namespace oware {
  namespace {
  
  namespace testing = open_spiel::testing;
  
  void BasicOwareTests() {
    testing::LoadGameTest("oware");
    testing::RandomSimTest(*LoadGame("oware"), 10);
    testing::NoChanceOutcomesTest(*LoadGame("oware"));
  
    testing::RandomSimTest(
        *LoadGame("oware", {{"num_houses_per_player", GameParameter(2)},
                            {"num_seeds_per_house", GameParameter(2)}}),
        10);
  }
  
  void LegalActionsNoConstraintsTest() {
    OwareState state =
        OwareState(OwareBoard(0, {0, 0}, {1, 0, 9, 0, 0, 1, 1, 0, 0, 0, 0, 0}));
    SPIEL_CHECK_EQ(state.LegalActions(), std::vector<Action>({0, 2, 5}));
  }
  
  void LegalActionsLeaveTheOpponentSeedsTest() {
    OwareState state =
        OwareState(OwareBoard(0, {0, 0}, {1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0}));
    // Playing action 0 would leave the opponent with no seeds, which is not
    // allowed.
    SPIEL_CHECK_EQ(state.LegalActions(), std::vector<Action>({5}));
  }
  
  void CaptureOpponentHousesTillBeginTest() {
    OwareState state(OwareBoard(0, {0, 0}, {0, 0, 8, 0, 0, 1, 1, 1, 1, 1, 2, 3}));
    state.ApplyAction(2);
    SPIEL_CHECK_EQ(state.Board(),
                   OwareBoard(1, {11, 0}, {0, 0, 0, 1, 1, 2, 0, 0, 0, 0, 0, 3}));
  }
  
  void CaptureMostOpponentHousesTest() {
    OwareState state(OwareBoard(0, {0, 0}, {0, 0, 8, 0, 0, 1, 3, 1, 1, 1, 2, 0}));
    state.ApplyAction(2);
    SPIEL_CHECK_EQ(state.Board(),
                   OwareBoard(1, {9, 0}, {0, 0, 0, 1, 1, 2, 4, 0, 0, 0, 0, 0}));
  }
  
  void NoCaptureBecauseTooFewSeedsTest() {
    OwareState state(OwareBoard(1, {0, 0}, {3, 1, 1, 1, 0, 0, 0, 0, 8, 0, 0, 1}));
    state.ApplyAction(2);
    SPIEL_CHECK_EQ(state.Board(),
                   OwareBoard(0, {0, 0}, {4, 2, 2, 2, 1, 0, 0, 0, 0, 1, 1, 2}));
  }
  
  void NoCaptureBecauseTooManySeedsTest() {
    OwareState state(OwareBoard(0, {0, 0}, {0, 0, 8, 0, 0, 1, 3, 1, 1, 1, 3, 0}));
    state.ApplyAction(2);
    SPIEL_CHECK_EQ(state.Board(),
                   OwareBoard(1, {0, 0}, {0, 0, 0, 1, 1, 2, 4, 2, 2, 2, 4, 0}));
  }
  
  void NoCaptureBecauseGrandSlamTest() {
    OwareState state(OwareBoard(1, {0, 0}, {1, 1, 1, 1, 1, 0, 0, 0, 8, 0, 0, 1}));
    state.ApplyAction(2);
    SPIEL_CHECK_EQ(state.Board(),
                   OwareBoard(0, {0, 0}, {2, 2, 2, 2, 2, 0, 0, 0, 0, 1, 1, 2}));
  }
  
  void GameEndsByRepetitionTest() {
    OwareState state(
        OwareBoard(0, {23, 23}, {1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0}));
  
    state.ApplyAction(0);  // Player 0.
    state.ApplyAction(0);  // Player 1.
    state.ApplyAction(1);  // Player 0.
    state.ApplyAction(1);  // Player 1.
    state.ApplyAction(2);  // Player 0.
    state.ApplyAction(2);  // Player 1.
    state.ApplyAction(3);  // Player 0.
    state.ApplyAction(3);  // Player 1.
    state.ApplyAction(4);  // Player 0.
    state.ApplyAction(4);  // Player 1.
  
    SPIEL_CHECK_FALSE(state.IsTerminal());
    SPIEL_CHECK_EQ(state.Board(),
                   OwareBoard(0, {23, 23}, {0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1}));
  
    state.ApplyAction(5);  // Player 0.
    state.ApplyAction(5);  // Player 1.
  
    SPIEL_CHECK_TRUE(state.IsTerminal());
    SPIEL_CHECK_EQ(state.Board(),
                   OwareBoard(0, {24, 24}, {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}));
  }
  
  }  // namespace
  }  // namespace oware
  }  // namespace open_spiel
  
  int main(int argc, char** argv) {
    open_spiel::oware::BasicOwareTests();
    open_spiel::oware::LegalActionsNoConstraintsTest();
    open_spiel::oware::LegalActionsLeaveTheOpponentSeedsTest();
    open_spiel::oware::GameEndsByRepetitionTest();
    open_spiel::oware::CaptureOpponentHousesTillBeginTest();
    open_spiel::oware::CaptureMostOpponentHousesTest();
    open_spiel::oware::NoCaptureBecauseTooFewSeedsTest();
    open_spiel::oware::NoCaptureBecauseTooManySeedsTest();
    open_spiel::oware::NoCaptureBecauseGrandSlamTest();
  }
  