#include <gtest/gtest.h>

#include "consensus/validation.h"
#include "main.h"

// Fake an empty view
class FakeCoinsViewDB : public CCoinsView {
public:
    FakeCoinsViewDB() {}

    bool GetAnchorAt(const uint256 &rt, ZCIncrementalMerkleTree &tree) const {
        return false;
    }

    bool GetNullifier(const uint256 &nf) const {
        return false;
    }

    bool GetCoins(const uint256 &txid, CCoins &coins) const {
        return false;
    }

    bool HaveCoins(const uint256 &txid) const {
        return false;
    }

    uint256 GetBestBlock() const {
        uint256 a;
        return a;
    }

    uint256 GetBestAnchor() const {
        uint256 a;
        return a;
    }

    bool BatchWrite(CCoinsMap &mapCoins,
                    const uint256 &hashBlock,
                    const uint256 &hashAnchor,
                    CAnchorsMap &mapAnchors,
                    CNullifiersMap &mapNullifiers) {
        return false;
    }

    bool GetStats(CCoinsStats &stats) const {
        return false;
    }
};

TEST(Validation, ContextualCheckInputsPassesWithCoinbase) {
    // Create fake coinbase transaction
    CMutableTransaction mtx;
    mtx.vin.resize(1);
    CTransaction tx(mtx);
    ASSERT_TRUE(tx.IsCoinBase());

    // Fake an empty view
    FakeCoinsViewDB fakeDB;
    CCoinsViewCache view(&fakeDB);

    CValidationState state;
    EXPECT_TRUE(ContextualCheckInputs(tx, state, view, false, 0, false, Params(CBaseChainParams::MAIN).GetConsensus()));
}