puppet.challenge.js

    after(async function () {
        /** SUCCESS CONDITIONS */
        
        // // Attacker has stolen all tokens from the pool
        expect(
            await this.token.balanceOf(attacker)
        ).to.be.bignumber.gte(POOL_INITIAL_TOKEN_BALANCE);

        expect(
            await this.token.balanceOf(this.lendingPool.address)
        ).to.be.bignumber.eq('0');
        
       // Attacker ETH balance has not decreased
        expect(
            await balance.current(attacker)
        ).to.be.bignumber.gte(this.intialAttackerEthBalance);
    });
});