Fix ERC721 listing add event timestamp payload

contracts/Aavegotchi/facets/ERC721MarketplaceFacet.sol

@@ -254,7 +254,7 @@ contract ERC721MarketplaceFacet is Modifiers {
             whitelistId: _whitelistId
         });
 
-        emit ERC721ListingAdd(listingId, msgSender, _erc721TokenAddress, _erc721TokenId, _category, _priceInWei);
+        emit ERC721ListingAdd(listingId, msgSender, _erc721TokenAddress, _erc721TokenId, _category, block.timestamp);
 
         if (_affiliate != address(0)) {
             emit ERC721ListingSplit(listingId, _principalSplit, _affiliate);

test/foundryTests/ERC721ListingAddEventTimestamp.t.sol

@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.1;
+
+import {Test} from "forge-std/Test.sol";
+import {ERC721MarketplaceFacet} from "../../contracts/Aavegotchi/facets/ERC721MarketplaceFacet.sol";
+
+contract MockERC721ListingToken {
+    mapping(uint256 => address) internal owners;
+    mapping(address => mapping(address => bool)) internal operatorApprovals;
+    mapping(uint256 => address) internal tokenApprovals;
+
+    function mint(address _to, uint256 _tokenId) external {
+        owners[_tokenId] = _to;
+    }
+
+    function ownerOf(uint256 _tokenId) external view returns (address) {
+        return owners[_tokenId];
+    }
+
+    function setApprovalForAll(address _operator, bool _approved) external {
+        operatorApprovals[msg.sender][_operator] = _approved;
+    }
+
+    function isApprovedForAll(address _owner, address _operator) external view returns (bool) {
+        return operatorApprovals[_owner][_operator];
+    }
+
+    function approve(address _to, uint256 _tokenId) external {
+        require(msg.sender == owners[_tokenId], "MockERC721ListingToken: not owner");
+        tokenApprovals[_tokenId] = _to;
+    }
+
+    function getApproved(uint256 _tokenId) external view returns (address) {
+        return tokenApprovals[_tokenId];
+    }
+}
+
+contract ERC721ListingAddEventTimestampTest is Test {
+    event ERC721ListingAdd(
+        uint256 indexed listingId,
+        address indexed seller,
+        address erc721TokenAddress,
+        uint256 erc721TokenId,
+        uint256 indexed category,
+        uint256 time
+    );
+
+    ERC721MarketplaceFacet internal marketplaceFacet;
+    MockERC721ListingToken internal mockToken;
+
+    address internal constant SELLER = address(0xBEEF);
+    uint256 internal constant TOKEN_ID = 11;
+    uint256 internal constant CATEGORY = 0;
+    uint256 internal constant PRICE = 1 ether;
+
+    function setUp() public {
+        marketplaceFacet = new ERC721MarketplaceFacet();
+        mockToken = new MockERC721ListingToken();
+
+        mockToken.mint(SELLER, TOKEN_ID);
+
+        vm.prank(SELLER);
+        mockToken.setApprovalForAll(address(marketplaceFacet), true);
+    }
+
+    function testListingAddEventUsesTimestampFieldForTime() public {
+        uint256 expectedTime = block.timestamp;
+
+        vm.startPrank(SELLER);
+        vm.expectEmit(true, true, false, true, address(marketplaceFacet));
+        emit ERC721ListingAdd(1, SELLER, address(mockToken), TOKEN_ID, CATEGORY, expectedTime);
+
+        marketplaceFacet.addERC721Listing(address(mockToken), TOKEN_ID, CATEGORY, PRICE);
+        vm.stopPrank();
+    }
+}