Merge branch 'main' into feat/pricing-unit-tests

* main:
  Add enforcer unit testing (#37)
  feat/originator testing/bnpl /w testing (#39)
  differential fuzzing of lib (#35)

.gas-snapshot

@@ -1,82 +1,114 @@
-TestAstariaV1Loan:testNewLoanERC721CollateralDefaultTermsRecallBase() (gas: 1039520)
-TestAstariaV1Loan:testNewLoanERC721CollateralDefaultTermsRecallLender() (gas: 691168)
-TestAstariaV1Loan:testNewLoanERC721CollateralDefaultTermsRecallLiquidation() (gas: 770737)
-TestCustodian:testCannotLazyMintTwice() (gas: 76597)
+DiffFuzzTestStarPortLib:testSpentToReceived((uint8,address,uint256,uint256)[]) (runs: 256, μ: 880501, ~: 882340)
+DiffFuzzTestStarPortLib:testUnboundSpentToReceived((uint8,address,uint256,uint256)[]) (runs: 256, μ: 232899, ~: 237832)
+TestAstariaV1Loan:testNewLoanERC721CollateralDefaultTermsRecallBase() (gas: 1041013)
+TestAstariaV1Loan:testNewLoanERC721CollateralDefaultTermsRecallLender() (gas: 693016)
+TestAstariaV1Loan:testNewLoanERC721CollateralDefaultTermsRecallLiquidation() (gas: 772585)
+TestBorrowerEnforcer:testBERevertAdditionalTransfers() (gas: 73101)
+TestBorrowerEnforcer:testBERevertInvalidLoanTerms() (gas: 78338)
+TestBorrowerEnforcer:testBEValidLoanTerms() (gas: 69429)
+TestBorrowerEnforcer:testBEValidLoanTermsAnyIssuer() (gas: 69581)
+TestCustodian:testCannotLazyMintTwice() (gas: 76686)
 TestCustodian:testCannotMintInvalidLoanInvalidCustodian() (gas: 66883)
-TestCustodian:testCannotMintInvalidLoanValidCustodian() (gas: 72422)
+TestCustodian:testCannotMintInvalidLoanValidCustodian() (gas: 72511)
 TestCustodian:testCustodySelector() (gas: 2543980)
 TestCustodian:testDefaultCustodySelectorRevert() (gas: 70105)
 TestCustodian:testGenerateOrderInvalidHandlerExecution() (gas: 132855)
-TestCustodian:testGenerateOrderRepay() (gas: 164375)
-TestCustodian:testGenerateOrderRepayAsRepayApprovedBorrower() (gas: 190022)
-TestCustodian:testGenerateOrderRepayERC1155AndERC20AndNative() (gas: 843726)
-TestCustodian:testGenerateOrderRepayERC1155AndERC20AndNativeHandlerAuthorized() (gas: 785358)
-TestCustodian:testGenerateOrderRepayERC1155WithRevert() (gas: 518154)
+TestCustodian:testGenerateOrderRepay() (gas: 164353)
+TestCustodian:testGenerateOrderRepayAsRepayApprovedBorrower() (gas: 190000)
+TestCustodian:testGenerateOrderRepayERC1155AndERC20AndNative() (gas: 847956)
+TestCustodian:testGenerateOrderRepayERC1155AndERC20AndNativeHandlerAuthorized() (gas: 789588)
+TestCustodian:testGenerateOrderRepayERC1155WithRevert() (gas: 520259)
 TestCustodian:testGenerateOrderRepayInvalidHookAddress() (gas: 90249)
 TestCustodian:testGenerateOrderRepayInvalidHookReturnType() (gas: 84653)
 TestCustodian:testGenerateOrderRepayNotBorrower() (gas: 96449)
-TestCustodian:testGenerateOrderSettlement() (gas: 151381)
-TestCustodian:testGenerateOrderSettlementHandlerAuthorized() (gas: 160421)
-TestCustodian:testGenerateOrderSettlementNoActiveLoan() (gas: 155620)
+TestCustodian:testGenerateOrderSettlement() (gas: 151359)
+TestCustodian:testGenerateOrderSettlementHandlerAuthorized() (gas: 160399)
+TestCustodian:testGenerateOrderSettlementNoActiveLoan() (gas: 155598)
 TestCustodian:testGenerateOrderSettlementUnauthorized() (gas: 94219)
 TestCustodian:testGetBorrower() (gas: 76234)
-TestCustodian:testInvalidAction() (gas: 114400)
-TestCustodian:testInvalidActionRepayInActiveLoan() (gas: 117327)
-TestCustodian:testInvalidActionSettleActiveLoan() (gas: 117287)
+TestCustodian:testInvalidAction() (gas: 114489)
+TestCustodian:testInvalidActionRepayInActiveLoan() (gas: 117416)
+TestCustodian:testInvalidActionSettleActiveLoan() (gas: 117376)
 TestCustodian:testName() (gas: 7120)
 TestCustodian:testNonPayableFunctions() (gas: 225770)
 TestCustodian:testOnlySeaport() (gas: 17917)
 TestCustodian:testPayableFunctions() (gas: 41689)
-TestCustodian:testPreviewOrderNoActiveLoan() (gas: 98687)
-TestCustodian:testPreviewOrderRepay() (gas: 208128)
-TestCustodian:testPreviewOrderSettlement() (gas: 182676)
-TestCustodian:testPreviewOrderSettlementInvalidFufliller() (gas: 100488)
-TestCustodian:testPreviewOrderSettlementInvalidRepayer() (gas: 106646)
-TestCustodian:testRatifyOrder() (gas: 170218)
+TestCustodian:testPreviewOrderNoActiveLoan() (gas: 98776)
+TestCustodian:testPreviewOrderRepay() (gas: 208195)
+TestCustodian:testPreviewOrderSettlement() (gas: 182743)
+TestCustodian:testPreviewOrderSettlementInvalidFufliller() (gas: 100577)
+TestCustodian:testPreviewOrderSettlementInvalidRepayer() (gas: 106735)
+TestCustodian:testRatifyOrder() (gas: 170196)
 TestCustodian:testSeaportMetadata() (gas: 8567)
 TestCustodian:testSetRepayApproval() (gas: 37883)
 TestCustodian:testSupportsInterface() (gas: 9428)
 TestCustodian:testSymbol() (gas: 7149)
 TestCustodian:testTokenURI() (gas: 64839)
 TestCustodian:testTokenURIInvalidLoan() (gas: 13218)
-TestLoanCombinations:testLoan20For721SimpleInterestDutchFixedRepay() (gas: 530977)
-TestLoanCombinations:testLoan20for20SimpleInterestDutchFixedRepay() (gas: 499814)
-TestLoanCombinations:testLoan721for20SimpleInterestDutchFixedRepay() (gas: 549734)
-TestLoanCombinations:testLoanAstariaSettlementRepay() (gas: 539558)
-TestLoanCombinations:testLoanSimpleInterestEnglishFixed() (gas: 544218)
-TestLoanManager:testCannotIssueSameLoanTwice() (gas: 331333)
+TestLenderEnforcer:testLERevertAdditionalTransfersFromLender() (gas: 73760)
+TestLenderEnforcer:testLERevertInvalidLoanTerms() (gas: 78385)
+TestLenderEnforcer:testLEValidLoanTerms() (gas: 69429)
+TestLenderEnforcer:testLEValidLoanTermsAnyBorrower() (gas: 69516)
+TestLenderEnforcer:testLEValidLoanTermsWithAdditionalTransfers() (gas: 70757)
+TestLoanCombinations:testLoan20For721SimpleInterestDutchFixedRepay() (gas: 532861)
+TestLoanCombinations:testLoan20for20SimpleInterestDutchFixedRepay() (gas: 501718)
+TestLoanCombinations:testLoan721for20SimpleInterestDutchFixedRepay() (gas: 551584)
+TestLoanCombinations:testLoanAstariaSettlementRepay() (gas: 541442)
+TestLoanCombinations:testLoanSimpleInterestEnglishFixed() (gas: 546102)
+TestLoanManager:testAdditionalTransfers() (gas: 293082)
+TestLoanManager:testCannotIssueSameLoanTwice() (gas: 331285)
+TestLoanManager:testCannotOriginateWhilePaused() (gas: 87923)
 TestLoanManager:testCannotSettleInvalidLoan() (gas: 72594)
-TestLoanManager:testCannotSettleUnlessValidCustodian() (gas: 68772)
-TestLoanManager:testCaveatEnforcerRevert() (gas: 116699)
-TestLoanManager:testDefaultFeeRake() (gas: 350119)
-TestLoanManager:testExoticDebtWithNoCaveatsNotAsBorrower() (gas: 342776)
-TestLoanManager:testInitializedFlagSetProperly() (gas: 65230)
-TestLoanManager:testInvalidAmountCollateral() (gas: 152875)
-TestLoanManager:testInvalidAmountCollateral721() (gas: 152995)
-TestLoanManager:testInvalidAmountDebt() (gas: 177208)
-TestLoanManager:testInvalidItemType() (gas: 138923)
-TestLoanManager:testInvalidTransferLengthCollateral() (gas: 161136)
-TestLoanManager:testInvalidTransferLengthDebt() (gas: 165669)
-TestLoanManager:testIssued() (gas: 67055)
+TestLoanManager:testCannotSettleUnlessValidCustodian() (gas: 68750)
+TestLoanManager:testCaveatEnforcerRevert() (gas: 119155)
+TestLoanManager:testDefaultFeeRake() (gas: 352463)
+TestLoanManager:testExoticDebtWithNoCaveatsNotAsBorrower() (gas: 342734)
+TestLoanManager:testInitializedFlagSetProperly() (gas: 65262)
+TestLoanManager:testInvalidAmountCollateral() (gas: 152833)
+TestLoanManager:testInvalidAmountCollateral721() (gas: 152976)
+TestLoanManager:testInvalidAmountDebt() (gas: 177144)
+TestLoanManager:testInvalidIdentifierDebt() (gas: 197138)
+TestLoanManager:testInvalidItemType() (gas: 138881)
+TestLoanManager:testInvalidTransferLengthCollateral() (gas: 161050)
+TestLoanManager:testInvalidTransferLengthDebt() (gas: 165593)
+TestLoanManager:testIssued() (gas: 67144)
 TestLoanManager:testName() (gas: 7184)
-TestLoanManager:testNonDefaultCustodianCustodyCallFails() (gas: 190240)
-TestLoanManager:testNonDefaultCustodianCustodyCallSuccess() (gas: 258491)
-TestLoanManager:testNonPayableFunctions() (gas: 173071)
-TestLoanManager:testOverrideFeeRake() (gas: 343912)
-TestLoanManager:testSupportsInterface() (gas: 9159)
-TestLoanManager:testSymbol() (gas: 7127)
-TestLoanManager:testTokenNoCodeCollateral() (gas: 137717)
-TestLoanManager:testTokenNoCodeDebt() (gas: 170775)
-TestLoanManager:testTokenURI() (gas: 64914)
-TestLoanManager:testTokenURIInvalidLoan() (gas: 13309)
-TestLoanManager:testTransferFromFail() (gas: 80088)
-TestNewLoan:testBuyNowPayLater() (gas: 208)
-TestNewLoan:testNewLoanERC721CollateralDefaultTerms2():((uint256,address,address,address,address,(uint8,address,uint256,uint256)[],(uint8,address,uint256,uint256)[],(address,bytes,address,bytes,address,bytes))) (gas: 389501)
-TestNewLoan:testNewLoanERC721CollateralLessDebtThanOffered():((uint256,address,address,address,address,(uint8,address,uint256,uint256)[],(uint8,address,uint256,uint256)[],(address,bytes,address,bytes,address,bytes))) (gas: 2259)
+TestLoanManager:testNonDefaultCustodianCustodyCallFails() (gas: 190220)
+TestLoanManager:testNonDefaultCustodianCustodyCallSuccess() (gas: 258469)
+TestLoanManager:testNonPayableFunctions() (gas: 175555)
+TestLoanManager:testOverrideFeeRake() (gas: 346202)
+TestLoanManager:testPause() (gas: 34222)
+TestLoanManager:testSupportsInterface() (gas: 9181)
+TestLoanManager:testSymbol() (gas: 7235)
+TestLoanManager:testTokenNoCodeCollateral() (gas: 137653)
+TestLoanManager:testTokenNoCodeDebt() (gas: 170689)
+TestLoanManager:testTokenURI() (gas: 64892)
+TestLoanManager:testTokenURIInvalidLoan() (gas: 13244)
+TestLoanManager:testTransferFromFail() (gas: 80176)
+TestLoanManager:testUnPause() (gas: 14291)
+TestNewLoan:testBuyNowPayLater() (gas: 2831719)
+TestNewLoan:testNewLoanERC721CollateralDefaultTerms2() (gas: 391890)
+TestNewLoan:testNewLoanERC721CollateralLessDebtThanOffered() (gas: 2259)
 TestNewLoan:testNewLoanRefinanceNew() (gas: 207)
+TestNewLoan:testNewLoanViaOriginatorBorrowerApprovalAndLenderApproval() (gas: 299336)
+TestNewLoan:testNewLoanViaOriginatorLenderApproval() (gas: 353952)
 TestNewLoan:testSettleLoan() (gas: 163)
+TestRefStarPortLib:testSpentToReceived() (gas: 13315)
+TestRefStarPortLib:testValidateSalt(address,bytes32) (runs: 256, μ: 33865, ~: 33865)
 TestRepayLoan:testRepayLoan() (gas: 207)
-TestStarLiteUtils:testEncodeReceivedWithRecipient() (gas: 17955)
-TestStarLiteUtils:testSpentToReceived() (gas: 17708)
-TestStarLiteUtils:testValidateSaltOpt(address,bytes32) (runs: 256, μ: 26479, ~: 26479)
-TestStarLiteUtils:testValidateSaltRef(address,bytes32) (runs: 256, μ: 26849, ~: 26849)
+TestStarPortLib:testSpentToReceived() (gas: 13315)
+TestStarPortLib:testValidateSalt(address,bytes32) (runs: 256, μ: 33865, ~: 33865)
+TestStrategistOriginator:testEncodeWithAccountCounter() (gas: 12307)
+TestStrategistOriginator:testGetStrategistData() (gas: 1473217)
+TestStrategistOriginator:testIncrementCounterAsStrategist() (gas: 18676)
+TestStrategistOriginator:testIncrementCounterNotAuthorized() (gas: 13467)
+TestStrategistOriginator:testInvalidCollateral() (gas: 204416)
+TestStrategistOriginator:testInvalidDeadline() (gas: 210145)
+TestStrategistOriginator:testInvalidDebt() (gas: 206100)
+TestStrategistOriginator:testInvalidDebtAmountAskingMoreThanOffered() (gas: 206548)
+TestStrategistOriginator:testInvalidDebtAmountOfferingZero() (gas: 186903)
+TestStrategistOriginator:testInvalidDebtAmountRequestingZero() (gas: 206801)
+TestStrategistOriginator:testInvalidDebtLength() (gas: 205428)
+TestStrategistOriginator:testInvalidOffer() (gas: 396325)
+TestStrategistOriginator:testInvalidSigner() (gas: 208639)
+TestStrategistOriginator:testSetStrategist() (gas: 17818)

foundry.toml

@@ -1,6 +1,7 @@
 [profile.default]
+#cancun = true
 src = "src"
 out = "out"
 libs = ["lib"]
-
+#solc = "./bin/solc"
 # See more config options https://github.com/foundry-rs/foundry/tree/master/config

src/BNPLHelper.sol

@@ -0,0 +1,138 @@
+pragma solidity ^0.8.17;
+
+import {
+    OfferItem,
+    SpentItem,
+    ConsiderationItem,
+    AdvancedOrder,
+    OrderParameters,
+    CriteriaResolver,
+    ItemType,
+    Fulfillment
+} from "seaport-types/src/lib/ConsiderationStructs.sol";
+import {ConduitTransfer, ConduitItemType} from "seaport-types/src/conduit/lib/ConduitStructs.sol";
+
+import {Seaport} from "seaport/contracts/Seaport.sol";
+import {LoanManager} from "./LoanManager.sol";
+import {CaveatEnforcer} from "./enforcers/CaveatEnforcer.sol";
+import "forge-std/console.sol";
+
+interface IVault {
+    function flashLoan(
+        IFlashLoanRecipient recipient,
+        address[] calldata tokens,
+        uint256[] calldata amounts,
+        bytes memory userData
+    ) external;
+}
+
+interface IFlashLoanRecipient {
+    function receiveFlashLoan(
+        address[] calldata tokens,
+        uint256[] calldata amounts,
+        uint256[] calldata feeAmounts,
+        bytes memory userData
+    ) external;
+}
+
+interface IWETH9 {
+    function withdraw(uint256) external;
+}
+
+interface ERC20 {
+    function transfer(address, uint256) external returns (bool);
+}
+
+// fulfiller
+
+contract BNPLHelper is IFlashLoanRecipient {
+    address private constant vault = address(0xBA12222222228d8Ba445958a75a0704d566BF2C8);
+    IWETH9 private immutable WETH;
+    bytes32 private activeUserDataHash;
+
+    constructor(address WETH_) {
+        WETH = IWETH9(WETH_);
+    }
+
+    struct Execution {
+        address lm;
+        address seaport;
+        address borrower;
+        CaveatEnforcer.CaveatWithApproval borrowerCaveat;
+        CaveatEnforcer.CaveatWithApproval lenderCaveat;
+        LoanManager.Loan loan;
+        AdvancedOrder[] orders;
+        CriteriaResolver[] resolvers;
+        Fulfillment[] fulfillments;
+    }
+
+    error SenderNotSelf();
+    error DoNotSendETH();
+    error InvalidUserDataProvided();
+
+    function makeFlashLoan(
+        address[] calldata tokens,
+        uint256[] calldata amounts,
+        //        uint256[] calldata userProvidedAmounts,
+        bytes calldata userData
+    ) external {
+        //        assembly {
+        //            // Compute the hash of userData
+        //            let dataHash := keccak256(userData.offset, calldatasize())
+        //
+        //            // Store the hash in the activeUserDataHash state variable
+        //            tstore(activeUserDataHash.slot, dataHash)
+        //        }
+        activeUserDataHash = keccak256(userData);
+
+        IVault(vault).flashLoan(this, tokens, amounts, userData);
+    }
+
+    function receiveFlashLoan(
+        address[] calldata tokens, // are all erc20s
+        uint256[] calldata amounts,
+        uint256[] calldata feeAmounts,
+        bytes calldata userData
+    ) external override {
+        require(msg.sender == vault);
+
+        if (activeUserDataHash != keccak256(userData)) {
+            revert InvalidUserDataProvided();
+        }
+        delete activeUserDataHash;
+
+        Execution memory execution = abi.decode(userData, (Execution));
+        //approve seaport
+        for (uint256 i = 0; i < tokens.length;) {
+            ERC20(tokens[i]).transfer(execution.borrower, amounts[i]);
+            unchecked {
+                ++i;
+            }
+        }
+        Seaport(payable(execution.seaport)).matchAdvancedOrders(
+            execution.orders, execution.resolvers, execution.fulfillments, execution.borrower
+        );
+
+        ConduitTransfer[] memory transfers = new ConduitTransfer[](tokens.length);
+        for (uint256 i = 0; i < tokens.length;) {
+            transfers[i] = ConduitTransfer({
+                itemType: ConduitItemType.ERC20,
+                identifier: 0,
+                token: tokens[0],
+                from: execution.borrower,
+                to: vault,
+                amount: amounts[0] + feeAmounts[0]
+            });
+            unchecked {
+                ++i;
+            }
+        }
+        LoanManager(execution.lm).originate(transfers, execution.borrowerCaveat, execution.lenderCaveat, execution.loan);
+    }
+
+    receive() external payable {
+        if (msg.sender != address(WETH)) {
+            revert DoNotSendETH();
+        }
+    }
+}

src/ConduitHelper.sol

@@ -18,7 +18,7 @@
  *
  * Chainworks Labs
  */
-pragma solidity =0.8.17;
+pragma solidity ^0.8.17;
 
 import {ItemType, OfferItem, Schema, SpentItem, ReceivedItem} from "seaport-types/src/lib/ConsiderationStructs.sol";
 

src/Custodian.sol

@@ -18,7 +18,7 @@
  *
  * Chainworks Labs
  */
-pragma solidity =0.8.17;
+pragma solidity ^0.8.17;
 
 import {ERC721} from "solady/src/tokens/ERC721.sol";
 import {ERC20} from "solady/src/tokens/ERC20.sol";