envInt

签名

function envInt(string calldata key) external returns (int256 value);

function envInt(string calldata key, string calldata delimiter) external returns (int256[] memory values);

描述

Read an environment variable as int256 or int256[].

提示

  • If the value starts with 0x, -0x or +0x, it will be interpreted as a hex value, otherwise, it will be treated as a decimal number.
  • For arrays, you can specify the delimiter used to seperate the values with the delimiter parameter.

例子

Single Value

With environment variable INT_VALUE=-57896044618658097711785492504343953926634992332820282019728792003956564819968,

string memory key = "INT_VALUE";
int256 expected = type(int256).min;
int256 output = cheats.envInt(key);
assert(output == expected);

Array

With environment variable INT_VALUES=-0x8000000000000000000000000000000000000000000000000000000000000000,+0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF,

string memory key = "INT_VALUES";
string memory delimiter = ",";
int256[2] memory expected = [type(int256).min, type(int256).max];
int256[] memory output = cheats.envInt(key, delimiter);
assert(keccak256(abi.encodePacked((output))) == keccak256(abi.encodePacked((expected))));