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* Test batch minting of 1 * Fix balance tracking * fix lint * add changeset * rename UNSAFE -> unsafe * fix docs * fix changeset * grammar * add explanation of preserved invariant * add fuzz tests * rename variable * improve property definition * add burn * add test ownership multiple batches * refactor fuzz tests * change ownership test for better probability * typo * reorder comment * update changelog notes * edit changelog * lint * Update CHANGELOG.md --------- Co-authored-by: Francisco Giordano <fg@frang.io>
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| --- | ||
| 'openzeppelin-solidity': patch | ||
| --- | ||
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| `ERC721Consecutive`: Fixed a bug when `_mintConsecutive` is used for batches of size 1 that could lead to balance overflow. Refer to the breaking changes section in the changelog for a note on the behavior of `ERC721._beforeTokenTransfer`. |
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| // SPDX-License-Identifier: MIT | ||
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| pragma solidity ^0.8.0; | ||
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| import "../../../../contracts/token/ERC721/extensions/ERC721Consecutive.sol"; | ||
| import "forge-std/Test.sol"; | ||
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| function toSingleton(address account) pure returns (address[] memory) { | ||
| address[] memory accounts = new address[](1); | ||
| accounts[0] = account; | ||
| return accounts; | ||
| } | ||
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| contract ERC721ConsecutiveTarget is StdUtils, ERC721Consecutive { | ||
| uint256 public totalMinted = 0; | ||
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| constructor(address[] memory receivers, uint256[] memory batches) ERC721("", "") { | ||
| for (uint256 i = 0; i < batches.length; i++) { | ||
| address receiver = receivers[i % receivers.length]; | ||
| uint96 batchSize = uint96(bound(batches[i], 0, _maxBatchSize())); | ||
| _mintConsecutive(receiver, batchSize); | ||
| totalMinted += batchSize; | ||
| } | ||
| } | ||
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| function burn(uint256 tokenId) public { | ||
| _burn(tokenId); | ||
| } | ||
| } | ||
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| contract ERC721ConsecutiveTest is Test { | ||
| function test_balance(address receiver, uint256[] calldata batches) public { | ||
| vm.assume(receiver != address(0)); | ||
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| ERC721ConsecutiveTarget token = new ERC721ConsecutiveTarget(toSingleton(receiver), batches); | ||
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| assertEq(token.balanceOf(receiver), token.totalMinted()); | ||
| } | ||
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| function test_ownership(address receiver, uint256[] calldata batches, uint256[2] calldata unboundedTokenId) public { | ||
| vm.assume(receiver != address(0)); | ||
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| ERC721ConsecutiveTarget token = new ERC721ConsecutiveTarget(toSingleton(receiver), batches); | ||
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| if (token.totalMinted() > 0) { | ||
| uint256 validTokenId = bound(unboundedTokenId[0], 0, token.totalMinted() - 1); | ||
| assertEq(token.ownerOf(validTokenId), receiver); | ||
| } | ||
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| uint256 invalidTokenId = bound(unboundedTokenId[1], token.totalMinted(), type(uint256).max); | ||
| vm.expectRevert(); | ||
| token.ownerOf(invalidTokenId); | ||
| } | ||
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| function test_burn(address receiver, uint256[] calldata batches, uint256 unboundedTokenId) public { | ||
| vm.assume(receiver != address(0)); | ||
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| ERC721ConsecutiveTarget token = new ERC721ConsecutiveTarget(toSingleton(receiver), batches); | ||
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| // only test if we minted at least one token | ||
| uint256 supply = token.totalMinted(); | ||
| vm.assume(supply > 0); | ||
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| // burn a token in [0; supply[ | ||
| uint256 tokenId = bound(unboundedTokenId, 0, supply - 1); | ||
| token.burn(tokenId); | ||
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| // balance should have decreased | ||
| assertEq(token.balanceOf(receiver), supply - 1); | ||
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| // token should be burnt | ||
| vm.expectRevert(); | ||
| token.ownerOf(tokenId); | ||
| } | ||
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| function test_transfer( | ||
| address[2] calldata accounts, | ||
| uint256[2] calldata unboundedBatches, | ||
| uint256[2] calldata unboundedTokenId | ||
| ) public { | ||
| vm.assume(accounts[0] != address(0)); | ||
| vm.assume(accounts[1] != address(0)); | ||
| vm.assume(accounts[0] != accounts[1]); | ||
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| address[] memory receivers = new address[](2); | ||
| receivers[0] = accounts[0]; | ||
| receivers[1] = accounts[1]; | ||
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| // We assume _maxBatchSize is 5000 (the default). This test will break otherwise. | ||
| uint256[] memory batches = new uint256[](2); | ||
| batches[0] = bound(unboundedBatches[0], 1, 5000); | ||
| batches[1] = bound(unboundedBatches[1], 1, 5000); | ||
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| ERC721ConsecutiveTarget token = new ERC721ConsecutiveTarget(receivers, batches); | ||
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| uint256 tokenId0 = bound(unboundedTokenId[0], 0, batches[0] - 1); | ||
| uint256 tokenId1 = bound(unboundedTokenId[1], 0, batches[1] - 1) + batches[0]; | ||
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| assertEq(token.ownerOf(tokenId0), accounts[0]); | ||
| assertEq(token.ownerOf(tokenId1), accounts[1]); | ||
| assertEq(token.balanceOf(accounts[0]), batches[0]); | ||
| assertEq(token.balanceOf(accounts[1]), batches[1]); | ||
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| vm.prank(accounts[0]); | ||
| token.transferFrom(accounts[0], accounts[1], tokenId0); | ||
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| assertEq(token.ownerOf(tokenId0), accounts[1]); | ||
| assertEq(token.ownerOf(tokenId1), accounts[1]); | ||
| assertEq(token.balanceOf(accounts[0]), batches[0] - 1); | ||
| assertEq(token.balanceOf(accounts[1]), batches[1] + 1); | ||
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| vm.prank(accounts[1]); | ||
| token.transferFrom(accounts[1], accounts[0], tokenId1); | ||
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| assertEq(token.ownerOf(tokenId0), accounts[1]); | ||
| assertEq(token.ownerOf(tokenId1), accounts[0]); | ||
| assertEq(token.balanceOf(accounts[0]), batches[0]); | ||
| assertEq(token.balanceOf(accounts[1]), batches[1]); | ||
| } | ||
| } |
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