Merge pull request #8352 from ethereum-optimism/ctb/better-setup-check

contracts-bedrock: better setup check

packages/contracts-bedrock/.gas-snapshot

@@ -7,5 +7,5 @@ GasBenchMark_L1StandardBridge_Deposit:test_depositETH_benchmark_1() (gas: 348770
 GasBenchMark_L1StandardBridge_Finalize:test_finalizeETHWithdrawal_benchmark() (gas: 42970)
 GasBenchMark_L2OutputOracle:test_proposeL2Output_benchmark() (gas: 86629)
 GasBenchMark_OptimismPortal:test_depositTransaction_benchmark() (gas: 68462)
-GasBenchMark_OptimismPortal:test_depositTransaction_benchmark_1() (gas: 68899)
+GasBenchMark_OptimismPortal:test_depositTransaction_benchmark_1() (gas: 68911)
 GasBenchMark_OptimismPortal:test_proveWithdrawalTransaction_benchmark() (gas: 153527)
\ No newline at end of file

packages/contracts-bedrock/foundry.toml

@@ -35,6 +35,7 @@ fs_permissions = [
   { access='read', path='./broadcast/' },
   { access='read', path = './forge-artifacts/' },
   { access='write', path='./semver-lock.json' },
+  { access='read-write', path='./.testdata/' },
 ]
 libs = ["node_modules", "lib"]
 

packages/contracts-bedrock/test/setup/Setup.sol

@@ -134,13 +134,14 @@ contract Setup {
 
     /// @dev Sets up the L2 contracts. Depends on `L1()` being called first.
     function L2(DeployConfig cfg) public {
+        string memory allocsPath = string.concat(vm.projectRoot(), "/.testdata/genesis.json");
+        if (vm.isFile(allocsPath) == false) {
             string[] memory args = new string[](3);
             args[0] = Executables.bash;
             args[1] = "-c";
             args[2] = string.concat(vm.projectRoot(), "/scripts/generate-l2-genesis.sh");
             vm.ffi(args);
-
-        string memory allocsPath = string.concat(vm.projectRoot(), "/.testdata/genesis.json");
+        }
         vm.loadAllocs(allocsPath);
 
         // Set the governance token's owner to be the final system owner