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-rw-r--r--packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol19
-rw-r--r--packages/contracts/test/extensions/order_validator.ts50
2 files changed, 69 insertions, 0 deletions
diff --git a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol
index 8f4ce9ccc..a18345245 100644
--- a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol
+++ b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol
@@ -158,6 +158,25 @@ contract OrderValidator {
return (balance, allowance);
}
+ /// @dev Fetches token balances and allowances of an address for each given assetProxy. Supports ERC20 and ERC721.
+ /// @param target Address to fetch balances and allowances of.
+ /// @param assetData Array of encoded byte arrays that can be decoded by a specified proxy contract when transferring asset.
+ /// @return Balances and allowances of assets.
+ /// For ERC721 tokens, these values will always be 1 or 0.
+ function getBalancesAndAllowances(address target, bytes[] memory assetData)
+ public
+ view
+ returns (uint256[] memory, uint256[] memory)
+ {
+ uint256 length = assetData.length;
+ uint256[] memory balances = new uint256[](length);
+ uint256[] memory allowances = new uint256[](length);
+ for (uint256 i = 0; i != length; i++) {
+ (balances[i], allowances[i]) = getBalanceAndAllowance(target, assetData[i]);
+ }
+ return (balances, allowances);
+ }
+
/// @dev Calls `token.ownerOf(tokenId)`, but returns a null owner instead of reverting on an unowned token.
/// @param token Address of ERC721 token.
/// @param tokenId The identifier for the specific NFT.
diff --git a/packages/contracts/test/extensions/order_validator.ts b/packages/contracts/test/extensions/order_validator.ts
index a3b704f27..3a57cfc37 100644
--- a/packages/contracts/test/extensions/order_validator.ts
+++ b/packages/contracts/test/extensions/order_validator.ts
@@ -217,6 +217,56 @@ describe('OrderValidator', () => {
});
});
});
+ describe('getBalancesAndAllowances', () => {
+ it('should return the correct balances and allowances when all values are 0', async () => {
+ const [
+ [erc20Balance, erc721Balance],
+ [erc20Allowance, erc721Allowance],
+ ] = await orderValidator.getBalancesAndAllowances.callAsync(makerAddress, [
+ erc20AssetData,
+ erc721AssetData,
+ ]);
+ expect(erc20Balance).to.be.bignumber.equal(constants.ZERO_AMOUNT);
+ expect(erc721Balance).to.be.bignumber.equal(constants.ZERO_AMOUNT);
+ expect(erc20Allowance).to.be.bignumber.equal(constants.ZERO_AMOUNT);
+ expect(erc721Allowance).to.be.bignumber.equal(constants.ZERO_AMOUNT);
+ });
+ it('should return the correct balances and allowances when balances and allowances are non-zero', async () => {
+ const balance = new BigNumber(123);
+ const allowance = new BigNumber(456);
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await erc20Token.setBalance.sendTransactionAsync(makerAddress, balance),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await erc20Token.approve.sendTransactionAsync(erc20Proxy.address, allowance, {
+ from: makerAddress,
+ }),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await erc721Token.mint.sendTransactionAsync(makerAddress, tokenId),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await erc721Token.approve.sendTransactionAsync(erc721Proxy.address, tokenId, {
+ from: makerAddress,
+ }),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+ const [
+ [erc20Balance, erc721Balance],
+ [erc20Allowance, erc721Allowance],
+ ] = await orderValidator.getBalancesAndAllowances.callAsync(makerAddress, [
+ erc20AssetData,
+ erc721AssetData,
+ ]);
+ expect(erc20Balance).to.be.bignumber.equal(balance);
+ expect(erc721Balance).to.be.bignumber.equal(ERC721_BALANCE);
+ expect(erc20Allowance).to.be.bignumber.equal(allowance);
+ expect(erc721Allowance).to.be.bignumber.equal(ERC721_ALLOWANCE);
+ });
+ });
describe('getTraderInfo', () => {
beforeEach(async () => {
signedOrder = await orderFactory.newSignedOrderAsync();