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-rw-r--r--packages/contracts/contracts/extensions/DutchAuction/DutchAuction.sol17
-rw-r--r--packages/contracts/test/extensions/dutch_auction.ts70
2 files changed, 58 insertions, 29 deletions
diff --git a/packages/contracts/contracts/extensions/DutchAuction/DutchAuction.sol b/packages/contracts/contracts/extensions/DutchAuction/DutchAuction.sol
index 225e33929..dea836da9 100644
--- a/packages/contracts/contracts/extensions/DutchAuction/DutchAuction.sol
+++ b/packages/contracts/contracts/extensions/DutchAuction/DutchAuction.sol
@@ -94,11 +94,20 @@ contract DutchAuction {
// Return any spread to the seller
uint256 leftMakerAssetSpreadAmount = matchedFillResults.leftMakerAssetSpreadAmount;
if (leftMakerAssetSpreadAmount > 0) {
- // Assume auction is for ERC20
+ // Calculate the excess from the buy order. This can occur if the buyer sends in a higher
+ // amount than the calculated current amount
+ uint256 buyerExcessAmount = buyOrder.makerAssetAmount-auctionDetails.currentAmount;
+ uint256 sellerExcessAmount = leftMakerAssetSpreadAmount-buyerExcessAmount;
bytes memory assetData = sellOrder.takerAssetData;
address token = assetData.readAddress(16);
- address makerAddress = sellOrder.makerAddress;
- IERC20Token(token).transfer(makerAddress, leftMakerAssetSpreadAmount);
+ if (sellerExcessAmount > 0) {
+ address makerAddress = sellOrder.makerAddress;
+ IERC20Token(token).transfer(makerAddress, sellerExcessAmount);
+ }
+ if (buyerExcessAmount > 0) {
+ address takerAddress = buyOrder.makerAddress;
+ IERC20Token(token).transfer(takerAddress, buyerExcessAmount);
+ }
}
return matchedFillResults;
}
@@ -116,7 +125,7 @@ contract DutchAuction {
// We assume auctionBeginTimeSeconds and auctionBeginAmount are appended to the makerAssetData
uint256 auctionBeginTimeSeconds = order.makerAssetData.readUint256(makerAssetDataLength-64);
uint256 auctionBeginAmount = order.makerAssetData.readUint256(makerAssetDataLength-32);
- // require(order.expirationTimeSeconds > auctionBeginTimeSeconds, "INVALID_BEGIN_TIME");
+ require(order.expirationTimeSeconds > auctionBeginTimeSeconds, "INVALID_BEGIN_TIME");
uint256 auctionDurationSeconds = order.expirationTimeSeconds-auctionBeginTimeSeconds;
uint256 minAmount = order.takerAssetAmount;
// solhint-disable-next-line not-rely-on-time
diff --git a/packages/contracts/test/extensions/dutch_auction.ts b/packages/contracts/test/extensions/dutch_auction.ts
index 207da6796..28e72858c 100644
--- a/packages/contracts/test/extensions/dutch_auction.ts
+++ b/packages/contracts/test/extensions/dutch_auction.ts
@@ -28,9 +28,8 @@ chaiSetup.configure();
const expect = chai.expect;
const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
const DECIMALS_DEFAULT = 18;
-const ZERO = Web3Wrapper.toBaseUnitAmount(new BigNumber(0), DECIMALS_DEFAULT);
-describe(ContractName.DutchAuction, () => {
+describe.only(ContractName.DutchAuction, () => {
let makerAddress: string;
let owner: string;
let takerAddress: string;
@@ -186,8 +185,8 @@ describe(ContractName.DutchAuction, () => {
makerAssetAmount: Web3Wrapper.toBaseUnitAmount(new BigNumber(200), DECIMALS_DEFAULT),
takerAssetAmount: auctionEndAmount,
expirationTimeSeconds: auctionEndTimeSeconds,
- makerFee: ZERO,
- takerFee: ZERO,
+ makerFee: constants.ZERO_AMOUNT,
+ takerFee: constants.ZERO_AMOUNT,
};
// Default buy order is for the auction begin price
const buyerDefaultOrderParams = {
@@ -244,23 +243,36 @@ describe(ContractName.DutchAuction, () => {
expect(auctionDetails.currentAmount).to.be.bignumber.equal(auctionEndAmount);
expect(auctionDetails.beginAmount).to.be.bignumber.equal(auctionBeginAmount);
});
- it('should match orders and send excess to seller', async () => {
- const txHash = await dutchAuctionContract.matchOrders.sendTransactionAsync(
- buyOrder,
+ it('should match orders at current amount and send excess to buyer', async () => {
+ let auctionDetails = await dutchAuctionContract.getAuctionDetails.callAsync(sellOrder);
+ buyOrder = await buyerOrderFactory.newSignedOrderAsync({
+ makerAssetAmount: auctionDetails.currentAmount.times(2),
+ });
+ const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
+ await dutchAuctionContract.matchOrders.sendTransactionAsync(
+ buyOrder,
+ sellOrder,
+ buyOrder.signature,
+ sellOrder.signature,
+ {
+ from: takerAddress,
+ },
+ ),
+ );
+ auctionDetails = await dutchAuctionContract.getAuctionDetails.callAsync(
sellOrder,
- buyOrder.signature,
- sellOrder.signature,
- {
- from: takerAddress,
- },
+ {},
+ parseInt(receipt.blockNumber as any, 16),
);
- await web3Wrapper.awaitTransactionSuccessAsync(txHash);
const newBalances = await erc20Wrapper.getBalancesAsync();
expect(newBalances[dutchAuctionContract.address][wethContract.address]).to.be.bignumber.equal(
constants.ZERO_AMOUNT,
);
expect(newBalances[makerAddress][wethContract.address]).to.be.bignumber.equal(
- erc20Balances[makerAddress][wethContract.address].plus(buyOrder.makerAssetAmount),
+ erc20Balances[makerAddress][wethContract.address].plus(auctionDetails.currentAmount),
+ );
+ expect(newBalances[takerAddress][wethContract.address]).to.be.bignumber.equal(
+ erc20Balances[takerAddress][wethContract.address].minus(auctionDetails.currentAmount),
);
});
it('should have valid getAuctionDetails at a block in the future', async () => {
@@ -293,6 +305,7 @@ describe(ContractName.DutchAuction, () => {
sellOrder = await sellerOrderFactory.newSignedOrderAsync({
makerFee: new BigNumber(1),
});
+ const auctionDetails = await dutchAuctionContract.getAuctionDetails.callAsync(sellOrder);
const txHash = await dutchAuctionContract.matchOrders.sendTransactionAsync(
buyOrder,
sellOrder,
@@ -305,7 +318,7 @@ describe(ContractName.DutchAuction, () => {
await web3Wrapper.awaitTransactionSuccessAsync(txHash);
const newBalances = await erc20Wrapper.getBalancesAsync();
expect(newBalances[makerAddress][wethContract.address]).to.be.bignumber.equal(
- erc20Balances[makerAddress][wethContract.address].plus(buyOrder.makerAssetAmount),
+ erc20Balances[makerAddress][wethContract.address].plus(auctionDetails.currentAmount),
);
expect(newBalances[feeRecipientAddress][zrxToken.address]).to.be.bignumber.equal(
erc20Balances[feeRecipientAddress][zrxToken.address].plus(sellOrder.makerFee),
@@ -315,6 +328,7 @@ describe(ContractName.DutchAuction, () => {
buyOrder = await buyerOrderFactory.newSignedOrderAsync({
makerFee: new BigNumber(1),
});
+ const auctionDetails = await dutchAuctionContract.getAuctionDetails.callAsync(sellOrder);
const txHash = await dutchAuctionContract.matchOrders.sendTransactionAsync(
buyOrder,
sellOrder,
@@ -327,7 +341,7 @@ describe(ContractName.DutchAuction, () => {
await web3Wrapper.awaitTransactionSuccessAsync(txHash);
const newBalances = await erc20Wrapper.getBalancesAsync();
expect(newBalances[makerAddress][wethContract.address]).to.be.bignumber.equal(
- erc20Balances[makerAddress][wethContract.address].plus(buyOrder.makerAssetAmount),
+ erc20Balances[makerAddress][wethContract.address].plus(auctionDetails.currentAmount),
);
expect(newBalances[feeRecipientAddress][zrxToken.address]).to.be.bignumber.equal(
erc20Balances[feeRecipientAddress][zrxToken.address].plus(buyOrder.makerFee),
@@ -420,19 +434,25 @@ describe(ContractName.DutchAuction, () => {
takerAssetAmount: new BigNumber(1),
takerAssetData: sellOrder.makerAssetData,
});
- const txHash = await dutchAuctionContract.matchOrders.sendTransactionAsync(
- buyOrder,
+ const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
+ await dutchAuctionContract.matchOrders.sendTransactionAsync(
+ buyOrder,
+ sellOrder,
+ buyOrder.signature,
+ sellOrder.signature,
+ {
+ from: takerAddress,
+ },
+ ),
+ );
+ const auctionDetails = await dutchAuctionContract.getAuctionDetails.callAsync(
sellOrder,
- buyOrder.signature,
- sellOrder.signature,
- {
- from: takerAddress,
- },
+ {},
+ parseInt(receipt.blockNumber as any, 16),
);
- await web3Wrapper.awaitTransactionSuccessAsync(txHash);
const newBalances = await erc20Wrapper.getBalancesAsync();
expect(newBalances[makerAddress][wethContract.address]).to.be.bignumber.equal(
- erc20Balances[makerAddress][wethContract.address].plus(buyOrder.makerAssetAmount),
+ erc20Balances[makerAddress][wethContract.address].plus(auctionDetails.currentAmount),
);
const newOwner = await erc721Token.ownerOf.callAsync(makerAssetId);
expect(newOwner).to.be.bignumber.equal(takerAddress);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 09:15:26 +0800