fix(forge): Optionally use create2 factory in tests

crates/cheatcodes/src/config.rs

@@ -20,6 +20,8 @@ use std::{
 pub struct CheatsConfig {
     /// Whether the FFI cheatcode is enabled.
     pub ffi: bool,
+    /// Use the create 2 factory in all cases including tests and non-broadcasting scripts.
+    pub always_use_create_2_factory: bool,
     /// RPC storage caching settings determines what chains and endpoints to cache
     pub rpc_storage_caching: StorageCachingConfig,
     /// All known endpoints and their aliases
@@ -50,6 +52,7 @@ impl CheatsConfig {
 
         Self {
             ffi: evm_opts.ffi,
+            always_use_create_2_factory: evm_opts.always_use_create_2_factory,
             rpc_storage_caching: config.rpc_storage_caching.clone(),
             rpc_endpoints,
             paths: config.project_paths(),
@@ -164,6 +167,7 @@ impl Default for CheatsConfig {
     fn default() -> Self {
         Self {
             ffi: false,
+            always_use_create_2_factory: false,
             rpc_storage_caching: Default::default(),
             rpc_endpoints: Default::default(),
             paths: ProjectPathsConfig::builder().build_with_root("./"),

crates/cheatcodes/src/inspector.rs

@@ -1202,18 +1202,12 @@ impl<DB: DatabaseExt> Inspector<DB> for Cheatcodes {
                 data.env.tx.caller = broadcast.new_origin;
 
                 if data.journaled_state.depth() == broadcast.depth {
-                    let (bytecode, to, nonce) = match process_create(
+                    let (bytecode, to, nonce) = process_broadcast_create(
                         broadcast.new_origin,
                         call.init_code.clone(),
                         data,
                         call,
-                    ) {
-                        Ok(val) => val,
-                        Err(err) => {
-                            return (InstructionResult::Revert, None, gas, Error::encode(err))
-                        }
-                    };
-
+                    );
                     let is_fixed_gas_limit = check_if_fixed_gas_limit(data, call.gas_limit);
 
                     self.broadcastable_transactions.push_back(BroadcastableTransaction {
@@ -1241,6 +1235,14 @@ impl<DB: DatabaseExt> Inspector<DB> for Cheatcodes {
             }
         }
 
+        // Apply the Create2 deployer
+        if self.broadcast.is_some() || self.config.always_use_create_2_factory {
+            match apply_create2_deployer(data, call, &self.prank, &self.broadcast) {
+                Ok(_val) => {}
+                Err(err) => return (InstructionResult::Revert, None, gas, Error::encode(err)),
+            };
+        }
+
         // allow cheatcodes from the address of the new contract
         // Compute the address *after* any possible broadcast updates, so it's based on the updated
         // call inputs
@@ -1416,18 +1418,31 @@ fn mstore_revert_string(interpreter: &mut Interpreter<'_>, bytes: &[u8]) {
     interpreter.return_len = interpreter.shared_memory.len() - starting_offset
 }
 
-fn process_create<DB: DatabaseExt>(
-    broadcast_sender: Address,
-    bytecode: Bytes,
+/// Applies the default CREATE2 deployer for contract creation.
+///
+/// This function is invoked during the contract creation process and updates the caller of the
+/// contract creation transaction to be the `DEFAULT_CREATE2_DEPLOYER` if the `CreateScheme` is
+/// `Create2` and the current execution depth matches the depth at which the `prank` or `broadcast`
+/// was started, or the default depth of 1 if no prank or broadcast is currently active.
+///
+/// Returns a `DatabaseError::MissingCreate2Deployer` if the `DEFAULT_CREATE2_DEPLOYER` account is
+/// not found or if it does not have any associated bytecode.
+fn apply_create2_deployer<DB: DatabaseExt>(
     data: &mut EVMData<'_, DB>,
     call: &mut CreateInputs,
-) -> Result<(Bytes, Option<Address>, u64), DB::Error> {
-    match call.scheme {
-        CreateScheme::Create => {
-            call.caller = broadcast_sender;
-            Ok((bytecode, None, data.journaled_state.account(broadcast_sender).info.nonce))
+    prank: &Option<Prank>,
+    broadcast: &Option<Broadcast>,
+) -> Result<(), DB::Error> {
+    if let CreateScheme::Create2 { salt: _ } = call.scheme {
+        let mut base_depth = 1;
+        if let Some(prank) = &prank {
+            base_depth = prank.depth;
+        } else if let Some(broadcast) = &broadcast {
+            base_depth = broadcast.depth;
         }
-        CreateScheme::Create2 { salt } => {
+        // If the create scheme is Create2 and the depth equals the broadcast/prank/default
+        // depth, then use the default create2 factory as the deployer
+        if data.journaled_state.depth() == base_depth {
             // Sanity checks for our CREATE2 deployer
             let info =
                 &data.journaled_state.load_account(DEFAULT_CREATE2_DEPLOYER, data.db)?.0.info;
@@ -1440,7 +1455,32 @@ fn process_create<DB: DatabaseExt>(
             }
 
             call.caller = DEFAULT_CREATE2_DEPLOYER;
+        }
+    }
+    Ok(())
+}
 
+/// Processes the creation of a new contract when broadcasting, preparing the necessary data for the
+/// transaction to deploy the contract.
+///
+/// Returns the transaction calldata and the target address.
+///
+/// If the CreateScheme is Create, then this function returns the input bytecode without
+/// modification and no address since it will be filled in later. If the CreateScheme is Create2,
+/// then this function returns the calldata for the call to the create2 deployer which must be the
+/// salt and init code concatenated.
+fn process_broadcast_create<DB: DatabaseExt>(
+    broadcast_sender: Address,
+    bytecode: Bytes,
+    data: &mut EVMData<'_, DB>,
+    call: &mut CreateInputs,
+) -> (Bytes, Option<Address>, u64) {
+    match call.scheme {
+        CreateScheme::Create => {
+            call.caller = broadcast_sender;
+            (bytecode, None, data.journaled_state.account(broadcast_sender).info.nonce)
+        }
+        CreateScheme::Create2 { salt } => {
             // We have to increment the nonce of the user address, since this create2 will be done
             // by the create2_deployer
             let account = data.journaled_state.state().get_mut(&broadcast_sender).unwrap();
@@ -1450,7 +1490,7 @@ fn process_create<DB: DatabaseExt>(
 
             // Proxy deployer requires the data to be `salt ++ init_code`
             let calldata = [&salt.to_be_bytes::<32>()[..], &bytecode[..]].concat();
-            Ok((calldata.into(), Some(DEFAULT_CREATE2_DEPLOYER), prev))
+            (calldata.into(), Some(DEFAULT_CREATE2_DEPLOYER), prev)
         }
     }
 }

crates/common/src/evm.rs

@@ -95,6 +95,11 @@ pub struct EvmArgs {
     #[serde(skip)]
     pub ffi: bool,
 
+    /// Use the create 2 factory in all cases including tests and non-broadcasting scripts.
+    #[clap(long)]
+    #[serde(skip)]
+    pub always_use_create_2_factory: bool,
+
     /// Verbosity of the EVM.
     ///
     /// Pass multiple times to increase the verbosity (e.g. -v, -vv, -vvv).
@@ -161,6 +166,13 @@ impl Provider for EvmArgs {
             dict.insert("ffi".to_string(), self.ffi.into());
         }
 
+        if self.always_use_create_2_factory {
+            dict.insert(
+                "always_use_create_2_factory".to_string(),
+                self.always_use_create_2_factory.into(),
+            );
+        }
+
         if self.no_storage_caching {
             dict.insert("no_storage_caching".to_string(), self.no_storage_caching.into());
         }

crates/config/README.md

@@ -114,6 +114,7 @@ no_match_contract = "Bar"
 match_path = "*/Foo*"
 no_match_path = "*/Bar*"
 ffi = false
+always_use_create_2_factory = false
 # These are the default callers, generated using `address(uint160(uint256(keccak256("foundry default caller"))))`
 sender = '0x1804c8AB1F12E6bbf3894d4083f33e07309d1f38'
 tx_origin = '0x1804c8AB1F12E6bbf3894d4083f33e07309d1f38'

crates/config/src/lib.rs

@@ -239,6 +239,8 @@ pub struct Config {
     pub invariant: InvariantConfig,
     /// Whether to allow ffi cheatcodes in test
     pub ffi: bool,
+    /// Use the create 2 factory in all cases including tests and non-broadcasting scripts.
+    pub always_use_create_2_factory: bool,
     /// The address which will be executing all tests
     pub sender: Address,
     /// The tx.origin value during EVM execution
@@ -1800,6 +1802,7 @@ impl Default for Config {
             path_pattern_inverse: None,
             fuzz: Default::default(),
             invariant: Default::default(),
+            always_use_create_2_factory: false,
             ffi: false,
             sender: Config::DEFAULT_SENDER,
             tx_origin: Config::DEFAULT_SENDER,
@@ -3367,6 +3370,7 @@ mod tests {
                 revert_strings = "strip"
                 allow_paths = ["allow", "paths"]
                 build_info_path = "build-info"
+                always_use_create_2_factory = true
 
                 [rpc_endpoints]
                 optimism = "https://example.com/"
@@ -3418,6 +3422,7 @@ mod tests {
                         ),
                     ]),
                     build_info_path: Some("build-info".into()),
+                    always_use_create_2_factory: true,
                     ..Config::default()
                 }
             );
@@ -3469,6 +3474,7 @@ mod tests {
                 evm_version = 'london'
                 extra_output = []
                 extra_output_files = []
+                always_use_create_2_factory = false
                 ffi = false
                 force = false
                 gas_limit = 9223372036854775807

crates/evm/core/src/opts.rs

@@ -53,6 +53,9 @@ pub struct EvmOpts {
     /// Enables the FFI cheatcode.
     pub ffi: bool,
 
+    /// Use the create 2 factory in all cases including tests and non-broadcasting scripts.
+    pub always_use_create_2_factory: bool,
+
     /// Verbosity mode of EVM output as number of occurrences.
     pub verbosity: u8,
 

crates/forge/tests/cli/config.rs

@@ -64,6 +64,7 @@ forgetest!(can_extract_config_values, |prj, cmd| {
         },
         invariant: InvariantConfig { runs: 256, ..Default::default() },
         ffi: true,
+        always_use_create_2_factory: false,
         sender: "00a329c0648769A73afAc7F9381D08FB43dBEA72".parse().unwrap(),
         tx_origin: "00a329c0648769A73afAc7F9F81E08FB43dBEA72".parse().unwrap(),
         initial_balance: U256::from(0xffffffffffffffffffffffffu128),

crates/forge/tests/it/repros.rs

@@ -300,3 +300,10 @@ test_repro!(6759);
 
 // https://github.com/foundry-rs/foundry/issues/6966
 test_repro!(6966);
+
+// https://github.com/foundry-rs/foundry/issues/5529
+test_repro!(5529; |config| {
+  let mut cheats_config = config.runner.cheats_config.as_ref().clone();
+  cheats_config.always_use_create_2_factory = true;
+  config.runner.cheats_config = std::sync::Arc::new(cheats_config);
+});

testdata/repros/Issue5529.t.sol

@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.13;
+
+import "ds-test/test.sol";
+import "../cheats/Vm.sol";
+
+contract Counter {
+    uint256 public number;
+
+    function setNumber(uint256 newNumber) public {
+        number = newNumber;
+    }
+
+    function increment() public {
+        number++;
+    }
+}
+
+contract Issue5529Test is DSTest {
+    Vm constant vm = Vm(HEVM_ADDRESS);
+
+    Counter public counter;
+    address public constant default_create2_factory = 0x4e59b44847b379578588920cA78FbF26c0B4956C;
+
+    function testCreate2FactoryUsedInTests() public {
+        address a = vm.computeCreate2Address(0, keccak256(type(Counter).creationCode), address(default_create2_factory));
+        address b = address(new Counter{salt: 0}());
+        require(a == b, "create2 address mismatch");
+    }
+
+    function testCreate2FactoryUsedWhenPranking() public {
+        vm.startPrank(address(1234));
+        address a = vm.computeCreate2Address(0, keccak256(type(Counter).creationCode), address(default_create2_factory));
+        address b = address(new Counter{salt: 0}());
+        require(a == b, "create2 address mismatch");
+    }
+}