pragma solidity ^0.8.0;

contract GasConsumer {
  function consumeAllGas() external view {
    assembly {
      // While loop that operates indefinitely, written in yul to ensure better granularity over exactly how much gas is
      // spent
      for {
        // Loop will run forever since 0 < 1
      } lt(0, 1) {} {
        // If 100 gas is remaining, then exit the loop by returning. 100 was determined by manual binary search to be
        // the minimal amount of gas needed but less than the cost of another loop
        if lt(gas(), 100) { return(0x0, 0x0) } // Return with no return data
      }
    }
  }

  function throwOutOfGasError() external pure {
    while (true) {
      // Intentionally consume all gas to throw an OOG error.
    }
  }
}