feat: Move proposeAnotherOutput to L2OutputOracle specific test file. (#13366)

* feat: Move proposeAnotherOutput to L2OutputOracle specific test file.

* fix: gas snapshot

packages/contracts-bedrock/snapshots/.gas-snapshot

@@ -5,7 +5,7 @@ GasBenchMark_L1BlockInterop_SetValuesInterop_Warm:test_setL1BlockValuesInterop_b
 GasBenchMark_L1Block_SetValuesEcotone:test_setL1BlockValuesEcotone_benchmark() (gas: 158531)
 GasBenchMark_L1Block_SetValuesEcotone_Warm:test_setL1BlockValuesEcotone_benchmark() (gas: 7597)
 GasBenchMark_L1CrossDomainMessenger:test_sendMessage_benchmark_0() (gas: 369280)
-GasBenchMark_L1CrossDomainMessenger:test_sendMessage_benchmark_1() (gas: 2967465)
+GasBenchMark_L1CrossDomainMessenger:test_sendMessage_benchmark_1() (gas: 2967420)
 GasBenchMark_L1StandardBridge_Deposit:test_depositERC20_benchmark_0() (gas: 564398)
 GasBenchMark_L1StandardBridge_Deposit:test_depositERC20_benchmark_1() (gas: 4076613)
 GasBenchMark_L1StandardBridge_Deposit:test_depositETH_benchmark_0() (gas: 467098)
@@ -13,5 +13,5 @@ GasBenchMark_L1StandardBridge_Deposit:test_depositETH_benchmark_1() (gas: 351280
 GasBenchMark_L1StandardBridge_Finalize:test_finalizeETHWithdrawal_benchmark() (gas: 72664)
 GasBenchMark_L2OutputOracle:test_proposeL2Output_benchmark() (gas: 92973)
 GasBenchMark_OptimismPortal:test_depositTransaction_benchmark() (gas: 68422)
-GasBenchMark_OptimismPortal:test_depositTransaction_benchmark_1() (gas: 68986)
-GasBenchMark_OptimismPortal:test_proveWithdrawalTransaction_benchmark() (gas: 155565)
+GasBenchMark_OptimismPortal:test_depositTransaction_benchmark_1() (gas: 69031)
+GasBenchMark_OptimismPortal:test_proveWithdrawalTransaction_benchmark() (gas: 155610)
\ No newline at end of file

packages/contracts-bedrock/test/L1/L2OutputOracle.t.sol

@@ -23,6 +23,28 @@ contract L2OutputOracle_TestBase is CommonTest {
         super.setUp();
     }
 
+    /// @dev Helper function to propose an output.
+    function proposeAnotherOutput() public {
+        bytes32 proposedOutput2 = keccak256(abi.encode());
+        uint256 nextBlockNumber = l2OutputOracle.nextBlockNumber();
+        uint256 nextOutputIndex = l2OutputOracle.nextOutputIndex();
+        warpToProposeTime(nextBlockNumber);
+        uint256 proposedNumber = l2OutputOracle.latestBlockNumber();
+
+        uint256 submissionInterval = deploy.cfg().l2OutputOracleSubmissionInterval();
+        // Ensure the submissionInterval is enforced
+        assertEq(nextBlockNumber, proposedNumber + submissionInterval);
+
+        vm.roll(nextBlockNumber + 1);
+
+        vm.expectEmit(true, true, true, true);
+        emit OutputProposed(proposedOutput2, nextOutputIndex, nextBlockNumber, block.timestamp);
+
+        address proposer = deploy.cfg().l2OutputOracleProposer();
+        vm.prank(proposer);
+        l2OutputOracle.proposeL2Output(proposedOutput2, nextBlockNumber, 0, 0);
+    }
+
     /// @dev Tests that constructor sets the initial values correctly.
     function test_constructor_succeeds() external {
         IL2OutputOracle oracleImpl = IL2OutputOracle(address(new L2OutputOracle()));

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

@@ -170,28 +170,6 @@ contract CommonTest is Test, Setup, Events {
         vm.warp(l2OutputOracle.computeL2Timestamp(_nextBlockNumber) + 1);
     }
 
-    /// @dev Helper function to propose an output.
-    function proposeAnotherOutput() public {
-        bytes32 proposedOutput2 = keccak256(abi.encode());
-        uint256 nextBlockNumber = l2OutputOracle.nextBlockNumber();
-        uint256 nextOutputIndex = l2OutputOracle.nextOutputIndex();
-        warpToProposeTime(nextBlockNumber);
-        uint256 proposedNumber = l2OutputOracle.latestBlockNumber();
-
-        uint256 submissionInterval = deploy.cfg().l2OutputOracleSubmissionInterval();
-        // Ensure the submissionInterval is enforced
-        assertEq(nextBlockNumber, proposedNumber + submissionInterval);
-
-        vm.roll(nextBlockNumber + 1);
-
-        vm.expectEmit(true, true, true, true);
-        emit OutputProposed(proposedOutput2, nextOutputIndex, nextBlockNumber, block.timestamp);
-
-        address proposer = deploy.cfg().l2OutputOracleProposer();
-        vm.prank(proposer);
-        l2OutputOracle.proposeL2Output(proposedOutput2, nextBlockNumber, 0, 0);
-    }
-
     function enableLegacyContracts() public {
         // Check if the system has already been deployed, based off of the heuristic that alice and bob have not been
         // set by the `setUp` function yet.