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PaulRBerg / git-cm.toml
Created March 6, 2023 10:23
Git alias to copy the message of a commit SHA
[alias]
# Copy message of provided commit: git cm COMMIT_SHA
cm = !"git rev-list --format=%B --max-count=1 $1 | tail +2 | pbcopy"
@PaulRBerg
PaulRBerg / AbiEncode.sol
Created February 25, 2023 21:36
Toy example to see how `abi.encode` works with zero values
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
contract Contract {
function foo(bytes32 seed) external view returns (bytes memory) {
return abi.encode(tx.origin, seed);
}
function getBytes32(uint256 number) external pure returns (bytes32) {
return bytes32(number);
@PaulRBerg
PaulRBerg / Base.s.sol
Last active September 6, 2025 19:00
Base Foundry script: https://twitter.com/PaulRBerg/status/1629480999888273412
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { Script } from "forge-std/Script.sol";
abstract contract BaseScript is Script {
/// @dev Included to enable compilation of the script without a $MNEMONIC environment variable.
string internal constant TEST_MNEMONIC = "test test test test test test test test test test test junk";
/// @dev Needed for the deterministic deployments.
@PaulRBerg
PaulRBerg / foo.t.sol
Created February 12, 2023 13:43
Simple Solidity test tree
// SPDX-License-Identifier: UNLICENSED
pragma solidity >=0.8.18;
import { PRBTest } from "@prb/test/PRBTest.sol";
contract Foo is PRBTest {
function test_RevertWhen_CallerNotOwner() external {
vm.expectRevert();
// ...
}
@PaulRBerg
PaulRBerg / testFuzzOrderedArr.sol
Last active April 6, 2025 07:35
Test that fuzzes ordered arrays in Solidity
// SPDX-License-Identifier: UNLICENSED
pragma solidity >=0.8.18;
import { Test } from "forge-std/Test.sol";
import { arange } from "solidity-generators/Generators.sol";
contract MyTest is Test {
function testFuzz_OrderedArr(uint256[] memory arr) internal view {
vm.assume(arr.length != 0);
@PaulRBerg
PaulRBerg / ForgeTestNamingConvention.t.sol
Created January 19, 2023 13:41
See https://twitter.com/PaulRBerg/status/1616068157088714765
// SPDX-License-Identifier: UNLICENSED
pragma solidity >=0.8.17;
import { PRBTest } from "@prb/test/PRBTest.sol";
contract ForgeTestNamingConvention is PRBTest {
// Standard tests
function test_Description() external {}
// Tests expecting a revert
@PaulRBerg
PaulRBerg / quicksort.sol
Created December 25, 2022 19:51
QuickSort implementation in Solidity v0.8.17
pragma solidity =0.8.17;
function quickSort(uint40[] memory arr, uint40 left, uint40 right) internal pure {
if (left >= right) {
return;
}
unchecked {
// p = the pivot element
uint40 p = arr[(left + right) / 2];
@PaulRBerg
PaulRBerg / foundry-cache-rpc-github-actions.yml
Created December 14, 2022 16:03
Simple YAML script for caching RPC responses when fork testing with Foundry in GitHub Actions
- name: "Cache RPC Responses"
uses: "actions/cache@v3"
with:
path: "~/.foundry/cache/rpc/mainnet/16183456"
key: "${{ runner.os }}-mainnet-16183456"
@PaulRBerg
PaulRBerg / allMathFunctions.sol
Created November 29, 2022 16:47
All math functions in SD59x18 (v3.0.0)
// SPDX-License-Identifier: UNLICENSED
pragma solidity >=0.8.13;
import "@prb/math/SD59x18.sol";
function allMathFunctions(SD59x18 x, SD59x18 y) pure {
abs(x);
avg(x, y);
ceil(x);
div(x, y);
@PaulRBerg
PaulRBerg / msb.sol
Last active November 29, 2022 16:47
High-level Solidity function that calculates the most significant bit
/// @notice Finds the zero-based index of the first 1 in the binary representation of x.
/// @dev See the note on msb in the "Find First Set" Wikipedia article https://en.wikipedia.org/wiki/Find_first_set
/// @param x The uint256 number for which to find the index of the most significant bit.
/// @return result The index of the most significant bit as an uint256.
function msb(uint256 x) pure returns (uint256 result) {
unchecked {
if (x >= 2 ** 128) {
x >>= 128;
result += 128;
}