contracts-bedrock: cleanup tests

Move some event declarations into higher level contracts
and delete a setUp function that was doing nothing but calling
super.setUp.

This allows us to more easily reuse the events across different
tests.

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

@@ -103,6 +103,15 @@ contract L2OutputOracle_Initializer is CommonTest {
     // Test data
     uint256 initL1Time;
 
+    event OutputProposed(
+        bytes32 indexed outputRoot,
+        uint256 indexed l2OutputIndex,
+        uint256 indexed l2BlockNumber,
+        uint256 l1Timestamp
+    );
+
+    event OutputsDeleted(uint256 indexed prevNextOutputIndex, uint256 indexed newNextOutputIndex);
+
     // Advance the evm's time to meet the L2OutputOracle's requirements for proposeL2Output
     function warpToProposeTime(uint256 _nextBlockNumber) public {
         vm.warp(oracle.computeL2Timestamp(_nextBlockNumber) + 1);
@@ -146,6 +155,13 @@ contract Portal_Initializer is L2OutputOracle_Initializer {
     OptimismPortal opImpl;
     OptimismPortal op;
 
+    event WithdrawalFinalized(bytes32 indexed withdrawalHash, bool success);
+    event WithdrawalProven(
+        bytes32 indexed withdrawalHash,
+        address indexed from,
+        address indexed to
+    );
+
     function setUp() public virtual override {
         L2OutputOracle_Initializer.setUp();
 

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

@@ -10,17 +10,6 @@ import { Types } from "../libraries/Types.sol";
 contract L2OutputOracleTest is L2OutputOracle_Initializer {
     bytes32 proposedOutput1 = keccak256(abi.encode(1));
 
-    event OutputProposed(
-        bytes32 indexed outputRoot,
-        uint256 indexed l2OutputIndex,
-        uint256 indexed l2BlockNumber,
-        uint256 l1Timestamp
-    );
-
-    function setUp() public override {
-        super.setUp();
-    }
-
     function test_constructor_succeeds() external {
         assertEq(oracle.PROPOSER(), proposer);
         assertEq(oracle.CHALLENGER(), owner);
@@ -335,8 +324,6 @@ contract L2OutputOracleTest is L2OutputOracle_Initializer {
      * Delete Tests - Happy Path *
      *****************************/
 
-    event OutputsDeleted(uint256 indexed prevNextOutputIndex, uint256 indexed newNextOutputIndex);
-
     function test_deleteOutputs_singleOutput_succeeds() external {
         test_proposeL2Output_proposeAnotherOutput_succeeds();
         test_proposeL2Output_proposeAnotherOutput_succeeds();

packages/contracts-bedrock/contracts/test/OptimismPortal.t.sol

@@ -289,13 +289,6 @@ contract OptimismPortal_FinalizeWithdrawal_Test is Portal_Initializer {
     bytes[] _withdrawalProof;
     Types.OutputRootProof internal _outputRootProof;
 
-    event WithdrawalFinalized(bytes32 indexed withdrawalHash, bool success);
-    event WithdrawalProven(
-        bytes32 indexed withdrawalHash,
-        address indexed from,
-        address indexed to
-    );
-
     // Use a constructor to set the storage vars above, so as to minimize the number of ffi calls.
     constructor() {
         super.setUp();