tests: itests: test create2 and destroy

itests/contracts/Create2Factory.hex

@@ -0,0 +1 @@
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itests/contracts/Create2Factory.sol

@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: MIT
+pragma solidity >=0.8.17;
+contract Create2Factory {
+
+    bytes32 savedSalt;
+
+    // Returns the address of the newly deployed contract
+    function deploy(
+        bytes32 _salt
+    ) public returns (address) {
+        // This syntax is a newer way to invoke create2 without assembly, you just need to pass salt
+        // https://docs.soliditylang.org/en/latest/control-structures.html#salted-contract-creations-create2
+        savedSalt = _salt;
+        (bool success, address ret) = deployDelegateCall(_salt);
+        require(success);
+        return ret;
+    }
+
+    function deployDelegateCall(
+        bytes32 _salt
+    ) public returns (bool, address) {
+        bytes memory data = abi.encodeWithSignature("_deploy(bytes32)", _salt);
+        (bool success, bytes memory returnedData) = address(this).delegatecall(data);
+        if(success){
+            (address ret) = abi.decode(returnedData, (address));
+            return (success, ret);
+        }else{
+            return (success, address(0));
+        }
+    }
+
+    function _deploy(bytes32 _salt) public returns (address) {
+        // https://solidity-by-example.org/app/create1/
+        // This syntax is a newer way to invoke create2 without assembly, you just need to pass salt
+        // https://docs.soliditylang.org/en/latest/control-structures.html#salted-contract-creations-create2
+        return address(new SelfDestruct{salt: _salt}(_salt));
+    }
+
+    function test(address _address) public returns (address){
+
+      // run destroy() on _address
+      SelfDestruct selfDestruct = SelfDestruct(_address);
+      selfDestruct.destroy();
+
+      //verify data can still be accessed
+      address ret = selfDestruct.sender();
+
+      // attempt and fail to deploy contract using salt
+      (bool success, ) = deployDelegateCall(selfDestruct.salt());
+      require(!success);
+
+      return ret;
+    }
+}
+
+contract SelfDestruct {
+    address public sender;
+    bytes32 public salt;
+    constructor(bytes32 _salt) {
+       sender = tx.origin;
+       salt=_salt;
+    }
+    function destroy() public {
+        selfdestruct(payable(msg.sender));
+    }
+}
+

itests/contracts/compile.sh

@@ -12,7 +12,7 @@ find . -name \*.sol -print0 |
 
 #for these contracts we have 2 contracts in the same solidity file 
 #this command grabs the correct bytecode for us
-for filename in Constructor TestApp ValueSender DeployValueTest; do
+for filename in Constructor TestApp ValueSender Create2Factory DeployValueTest; do
 	echo $filename
 	solc --bin $filename.sol | tail -n5|head -n1 | tr -d "\n" > $filename.hex
 done

itests/fevm_test.go

@@ -3,6 +3,7 @@ package itests
 import (
 	"bytes"
 	"context"
+	"crypto/rand"
 	"encoding/binary"
 	"encoding/hex"
 	"fmt"
@@ -730,3 +731,58 @@ func TestFEVMDeployWithValue(t *testing.T) {
 	//require balance of NewContract is testValue
 	require.Equal(t, testValue.Uint64(), contractBalance)
 }
+
+func TestFEVMDestroyCreate2(t *testing.T) {
+	ctx, cancel, client := kit.SetupFEVMTest(t)
+	defer cancel()
+
+	//deploy create2 factory contract
+	filename := "contracts/Create2Factory.hex"
+	fromAddr, idAddr := client.EVM().DeployContractFromFilename(ctx, filename)
+
+	//construct salt for create2
+	salt := make([]byte, 32)
+	_, err := rand.Read(salt)
+	require.NoError(t, err)
+
+	//deploy contract using create2 factory
+	selfDestructAddress, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "deploy(bytes32)", salt)
+	require.NoError(t, err)
+
+	//convert to filecoin actor address so we can call InvokeContractByFuncName
+	ea, err := ethtypes.CastEthAddress(selfDestructAddress[12:])
+	require.NoError(t, err)
+	selfDestructAddressActor, err := ea.ToFilecoinAddress()
+	require.NoError(t, err)
+
+	//read sender property from contract
+	ret, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, selfDestructAddressActor, "sender()", []byte{})
+	require.NoError(t, err)
+
+	//assert contract has correct data
+	ethFromAddr := inputDataFromFrom(ctx, t, client, fromAddr)
+	require.Equal(t, ethFromAddr, ret)
+
+	//run test() which 1.calls sefldestruct 2. verifies sender() is the correct value 3. attempts and fails to deploy via create2
+	testSenderAddress, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "test(address)", selfDestructAddress)
+	require.NoError(t, err)
+	require.Equal(t, testSenderAddress, ethFromAddr)
+
+	//read sender() but get response of 0x0 because of self destruct
+	senderAfterDestroy, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, selfDestructAddressActor, "sender()", []byte{})
+	require.NoError(t, err)
+	require.Equal(t, []byte{}, senderAfterDestroy)
+
+	// deploy new contract at same address usign same salt
+	newAddressSelfDestruct, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "deploy(bytes32)", salt)
+	require.NoError(t, err)
+	require.Equal(t, newAddressSelfDestruct, selfDestructAddress)
+
+	//verify sender() property is correct
+	senderSecondCall, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, selfDestructAddressActor, "sender()", []byte{})
+	require.NoError(t, err)
+
+	//assert contract has correct data
+	require.Equal(t, ethFromAddr, senderSecondCall)
+
+}