////////////////////////////////////////////////////////////////////////////////
/// @brief test suite for arangodb::cache::BucketState
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2017 ArangoDB GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Daniel H. Larkin
/// @author Copyright 2017, ArangoDB GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////

#include "Cache/BucketState.h"
#include "Basics/Common.h"

#include "catch.hpp"

#include <stdint.h>

using namespace arangodb::cache;

TEST_CASE("cache::BucketState", "[cache]") {
  SECTION("test lock methods") {
    BucketState state;
    bool success;

    uint32_t outsideBucketState = 0;

    auto cb1 = [&outsideBucketState]() -> void { outsideBucketState = 1; };

    auto cb2 = [&outsideBucketState]() -> void { outsideBucketState = 2; };

    // check lock without contention
    REQUIRE(!state.isLocked());
    success = state.lock(-1, cb1);
    REQUIRE(success);
    REQUIRE(state.isLocked());
    REQUIRE(1UL == outsideBucketState);

    // check lock with contention
    success = state.lock(10LL, cb2);
    REQUIRE(!success);
    REQUIRE(state.isLocked());
    REQUIRE(1UL == outsideBucketState);

    // check unlock
    state.unlock();
    REQUIRE(!state.isLocked());
  }

  SECTION("test methods for non-lock flags") {
    BucketState state;
    bool success;

    success = state.lock();
    REQUIRE(success);
    REQUIRE(!state.isSet(BucketState::Flag::migrated));
    state.unlock();

    success = state.lock();
    REQUIRE(success);
    REQUIRE(!state.isSet(BucketState::Flag::migrated));
    state.toggleFlag(BucketState::Flag::migrated);
    REQUIRE(state.isSet(BucketState::Flag::migrated));
    state.unlock();

    success = state.lock();
    REQUIRE(success);
    REQUIRE(state.isSet(BucketState::Flag::migrated));
    state.unlock();

    success = state.lock();
    REQUIRE(success);
    REQUIRE(state.isSet(BucketState::Flag::migrated));
    state.toggleFlag(BucketState::Flag::migrated);
    REQUIRE(!state.isSet(BucketState::Flag::migrated));
    state.unlock();

    success = state.lock();
    REQUIRE(success);
    REQUIRE(!state.isSet(BucketState::Flag::migrated));
    state.unlock();
  }
}