tests: erc20 events

packages/contracts-bedrock/contracts/test/L1StandardBridge.t.sol

@@ -287,6 +287,9 @@ contract L1StandardBridge_FinalizeERC20Withdrawal_Test is Bridge_Initializer {
         vm.expectEmit(true, true, true, true);
         emit ERC20WithdrawalFinalized(address(L1Token), address(L2Token), alice, alice, 100, hex"");
 
+        vm.expectEmit(true, true, true, true);
+        emit ERC20BridgeFinalized(address(L1Token), address(L2Token), alice, alice, 100, hex"");
+
         vm.expectCall(
             address(L1Token),
             abi.encodeWithSelector(ERC20.transfer.selector, alice, 100)

packages/contracts-bedrock/contracts/test/L2StandardBridge.t.sol

@@ -81,11 +81,17 @@ contract L2StandardBridge_Test is Bridge_Initializer {
     function test_withdrawTo_succeeds() external {
         deal(address(L2Token), alice, 100, true);
 
+        vm.expectEmit(true, true, true, true);
+        emit ERC20BridgeInitiated(address(L2Token), address(L1Token), alice, bob, 100, hex"");
+
+        vm.expectEmit(true, true, true, true);
+        emit WithdrawalInitiated(address(L1Token), address(L2Token), alice, bob, 100, hex"");
+
+        // TODO: calls
+
         vm.prank(alice, alice);
         L2Bridge.withdrawTo(address(L2Token), bob, 100, 1000, hex"");
 
-        // TODO: events and calls
-
         assertEq(L2Token.balanceOf(alice), 0);
     }
 
@@ -169,4 +175,4 @@ contract L2StandardBridge_FinalizeBridgeETH_Test is Bridge_Initializer {
 
         L2Bridge.finalizeBridgeETH{ value: 100 }(alice, alice, 100, hex"");
     }
-}
\ No newline at end of file
+}