txGasPrice

Signature

function txGasPrice(uint256) external;
function txGasPrice(uint256 newGasPrice) external;

Description

Sets tx.gasprice for the rest of the transaction.

Examples

We can use this to get accurate gas usage for a transaction.

function testCalculateGas() public { vm.txGasPrice(2); uint256 gasStart = gasleft(); myContract.doStuff(); uint256 gasEnd = gasleft(); uint256 gasUsed = (gasStart - gasEnd) * tx.gasprice; // tx.gasprice is now 2 }