sUSDS

test/instances/aave/AaveHyperdrive.t.sol

@@ -84,6 +84,7 @@ contract AaveHyperdriveTest is InstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 1e5,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e3,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/chainlink/CbETHBase.t.sol

@@ -67,6 +67,7 @@ contract CbETHBaseTest is ChainlinkHyperdriveInstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 1e3,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e3,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e4,

test/instances/chainlink/WstETHGnosisChain.t.sol

@@ -68,6 +68,7 @@ contract WstETHGnosisChainTest is ChainlinkHyperdriveInstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 1e3,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e3,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/corn/CornHyperdrive.t.sol

@@ -87,6 +87,7 @@ contract CornHyperdriveInstanceTest is InstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 0,
                 closeShortWithSharesTolerance: 0,
+                closeLongWithBaseTolerance: 0,
                 roundTripLpInstantaneousWithSharesTolerance: 0,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 0,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 0,

test/instances/corn/Corn_LBTC_Hyperdrive.sol

@@ -71,6 +71,7 @@ contract Corn_LBTC_Hyperdrive is CornHyperdriveInstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 0,
                 closeShortWithSharesTolerance: 0,
+                closeLongWithBaseTolerance: 0,
                 roundTripLpInstantaneousWithSharesTolerance: 0,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 0,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 0,

test/instances/corn/Corn_sDAI_Hyperdrive.t.sol

@@ -71,6 +71,7 @@ contract Corn_sDAI_Hyperdrive is CornHyperdriveInstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 0,
                 closeShortWithSharesTolerance: 0,
+                closeLongWithBaseTolerance: 0,
                 roundTripLpInstantaneousWithSharesTolerance: 0,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 0,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 0,

test/instances/eeth/EETHHyperdrive.t.sol

@@ -93,6 +93,7 @@ contract EETHHyperdriveTest is InstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 1e5,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e5,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/erc4626/SUSDe.t.sol

@@ -84,6 +84,7 @@ contract SUSDeHyperdriveTest is ERC4626HyperdriveInstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 1e8,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e8,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/erc4626/StUSD.t.sol

@@ -81,6 +81,7 @@ contract stUSDHyperdriveTest is ERC4626HyperdriveInstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 1e7,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e7,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/erc4626/sUSDS.t.sol

@@ -0,0 +1,195 @@
+// SPDX-License-Identifier: Apache-2.0
+pragma solidity 0.8.22;
+
+import { stdStorage, StdStorage } from "forge-std/Test.sol";
+import { IERC20 } from "../../../contracts/src/interfaces/IERC20.sol";
+import { IERC4626 } from "../../../contracts/src/interfaces/IERC4626.sol";
+import { IHyperdrive } from "../../../contracts/src/interfaces/IHyperdrive.sol";
+import { HyperdriveUtils } from "../../utils/HyperdriveUtils.sol";
+import { InstanceTest } from "../../utils/InstanceTest.sol";
+import { Lib } from "../../utils/Lib.sol";
+import { ERC4626HyperdriveInstanceTest } from "./ERC4626HyperdriveInstanceTest.t.sol";
+
+interface ISUSDS {
+    function chi() external view returns (uint256);
+
+    function rho() external view returns (uint256);
+
+    function ssr() external view returns (uint256);
+
+    function drip() external returns (uint256);
+}
+
+contract sUSDSHyperdriveTest is ERC4626HyperdriveInstanceTest {
+    using HyperdriveUtils for uint256;
+    using HyperdriveUtils for IHyperdrive;
+    using Lib for *;
+    using stdStorage for StdStorage;
+
+    /// @dev The RAY constant from sUSDS.
+    uint256 internal constant RAY = 1e27;
+
+    /// @dev The USDS contract.
+    IERC20 internal constant USDS =
+        IERC20(0xdC035D45d973E3EC169d2276DDab16f1e407384F);
+
+    /// @dev The sUSDS contract.
+    IERC4626 internal constant SUSDS =
+        IERC4626(0xa3931d71877C0E7a3148CB7Eb4463524FEc27fbD);
+
+    /// @dev Whale accounts.
+    address internal USDS_TOKEN_WHALE =
+        address(0x0650CAF159C5A49f711e8169D4336ECB9b950275);
+    address[] internal baseTokenWhaleAccounts = [USDS_TOKEN_WHALE];
+    address internal SUSDS_TOKEN_WHALE =
+        address(0x2674341D40b445c21287b81c4Bc95EC8E358f7E8);
+    address[] internal vaultSharesTokenWhaleAccounts = [SUSDS_TOKEN_WHALE];
+
+    /// @notice Instantiates the instance testing suite with the configuration.
+    constructor()
+        InstanceTest(
+            InstanceTestConfig({
+                name: "Hyperdrive",
+                kind: "ERC4626Hyperdrive",
+                decimals: 18,
+                baseTokenWhaleAccounts: baseTokenWhaleAccounts,
+                vaultSharesTokenWhaleAccounts: vaultSharesTokenWhaleAccounts,
+                baseToken: USDS,
+                vaultSharesToken: SUSDS,
+                shareTolerance: 1e3,
+                minimumShareReserves: 1e15,
+                minimumTransactionAmount: 1e15,
+                positionDuration: POSITION_DURATION,
+                fees: IHyperdrive.Fees({
+                    curve: 0,
+                    flat: 0,
+                    governanceLP: 0,
+                    governanceZombie: 0
+                }),
+                enableBaseDeposits: true,
+                enableShareDeposits: true,
+                enableBaseWithdraws: true,
+                enableShareWithdraws: true,
+                baseWithdrawError: new bytes(0),
+                isRebasing: false,
+                shouldAccrueInterest: true,
+                // The base test tolerances.
+                roundTripLpInstantaneousWithBaseTolerance: 1e8,
+                roundTripLpWithdrawalSharesWithBaseTolerance: 1e8,
+                roundTripLongInstantaneousWithBaseUpperBoundTolerance: 1e3,
+                roundTripLongInstantaneousWithBaseTolerance: 1e8,
+                roundTripLongMaturityWithBaseUpperBoundTolerance: 1e3,
+                roundTripLongMaturityWithBaseTolerance: 1e5,
+                roundTripShortInstantaneousWithBaseUpperBoundTolerance: 1e3,
+                roundTripShortInstantaneousWithBaseTolerance: 1e5,
+                roundTripShortMaturityWithBaseTolerance: 1e5,
+                // The share test tolerances.
+                closeLongWithSharesTolerance: 1e3,
+                closeLongWithBaseTolerance: 1e3,
+                closeShortWithSharesTolerance: 100,
+                roundTripLpInstantaneousWithSharesTolerance: 1e7,
+                roundTripLpWithdrawalSharesWithSharesTolerance: 1e7,
+                roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,
+                roundTripLongInstantaneousWithSharesTolerance: 1e5,
+                roundTripLongMaturityWithSharesUpperBoundTolerance: 1e3,
+                roundTripLongMaturityWithSharesTolerance: 1e5,
+                roundTripShortInstantaneousWithSharesUpperBoundTolerance: 1e3,
+                roundTripShortInstantaneousWithSharesTolerance: 1e5,
+                roundTripShortMaturityWithSharesTolerance: 1e5,
+                // The verification tolerances.
+                verifyDepositTolerance: 5,
+                verifyWithdrawalTolerance: 2
+            })
+        )
+    {}
+
+    /// @notice Forge function that is invoked to setup the testing environment.
+    function setUp() public override __mainnet_fork(20_836_852) {
+        // Invoke the Instance testing suite setup.
+        super.setUp();
+    }
+
+    /// Helpers ///
+
+    /// @dev Advance time and accrue interest.
+    /// @param timeDelta The time to advance.
+    /// @param variableRate The variable rate.
+    function advanceTime(
+        uint256 timeDelta,
+        int256 variableRate
+    ) internal override {
+        uint256 chi = ISUSDS(address(SUSDS)).chi();
+        uint256 rho = ISUSDS(address(SUSDS)).rho();
+        uint256 ssr = ISUSDS(address(SUSDS)).ssr();
+        chi = (_rpow(ssr, block.timestamp - rho) * chi) / RAY;
+
+        // Accrue interest in the sUSDS market. This amounts to manually
+        // updating the total supply assets.
+        (chi, ) = chi.calculateInterest(variableRate, timeDelta);
+
+        // Advance the time.
+        vm.warp(block.timestamp + timeDelta);
+
+        // Update the sUSDS market state.
+        vm.store(
+            address(SUSDS),
+            bytes32(uint256(5)),
+            bytes32((uint256(block.timestamp) << 192) | chi)
+        );
+    }
+
+    /// @dev The ray pow method from sUSDS.
+    /// @param x The base of the exponentiation.
+    /// @param n The exponent of the exponentiation.
+    /// @param z The result of the exponentiation.
+    function _rpow(uint256 x, uint256 n) internal pure returns (uint256 z) {
+        assembly {
+            switch x
+            case 0 {
+                switch n
+                case 0 {
+                    z := RAY
+                }
+                default {
+                    z := 0
+                }
+            }
+            default {
+                switch mod(n, 2)
+                case 0 {
+                    z := RAY
+                }
+                default {
+                    z := x
+                }
+                let half := div(RAY, 2) // for rounding.
+                for {
+                    n := div(n, 2)
+                } n {
+                    n := div(n, 2)
+                } {
+                    let xx := mul(x, x)
+                    if iszero(eq(div(xx, x), x)) {
+                        revert(0, 0)
+                    }
+                    let xxRound := add(xx, half)
+                    if lt(xxRound, xx) {
+                        revert(0, 0)
+                    }
+                    x := div(xxRound, RAY)
+                    if mod(n, 2) {
+                        let zx := mul(z, x)
+                        if and(iszero(iszero(x)), iszero(eq(div(zx, x), z))) {
+                            revert(0, 0)
+                        }
+                        let zxRound := add(zx, half)
+                        if lt(zxRound, zx) {
+                            revert(0, 0)
+                        }
+                        z := div(zxRound, RAY)
+                    }
+                }
+            }
+        }
+    }
+}

test/instances/erc4626/sxDai.t.sol

@@ -73,6 +73,7 @@ contract sxDaiHyperdriveTest is ERC4626HyperdriveInstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 1e7,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e7,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/ezETH/EzETHHyperdrive.t.sol

@@ -103,6 +103,7 @@ contract EzETHHyperdriveTest is InstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 1e6,
                 closeShortWithSharesTolerance: 1e6,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 1e7,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e7,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/ezeth-linea/EzETHLineaTest.t.sol

@@ -90,6 +90,7 @@ contract EzETHLineaHyperdriveTest is InstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 100,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e3,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/lseth/LsETHHyperdrive.t.sol

@@ -91,6 +91,7 @@ contract LsETHHyperdriveTest is InstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 1e3,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e3,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/morpho-blue/MorphoBlue_USDe_DAI_Hyperdrive.t.sol

@@ -76,6 +76,7 @@ contract MorphoBlue_USDe_DAI_HyperdriveTest is
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 0,
                 closeShortWithSharesTolerance: 0,
+                closeLongWithBaseTolerance: 0,
                 roundTripLpInstantaneousWithSharesTolerance: 0,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 0,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 0,

test/instances/morpho-blue/MorphoBlue_cbETH_USDC_Base_Hyperdrive.t.sol

@@ -79,6 +79,7 @@ contract MorphoBlue_cbETH_USDC_Base_HyperdriveTest is
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 0,
                 closeShortWithSharesTolerance: 0,
+                closeLongWithBaseTolerance: 0,
                 roundTripLpInstantaneousWithSharesTolerance: 0,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 0,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 0,

test/instances/morpho-blue/MorphoBlue_sUSDe_DAI_Hyperdrive.t.sol

@@ -76,6 +76,7 @@ contract MorphoBlue_sUSDe_DAI_HyperdriveTest is
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 0,
                 closeShortWithSharesTolerance: 0,
+                closeLongWithBaseTolerance: 0,
                 roundTripLpInstantaneousWithSharesTolerance: 0,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 0,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 0,

test/instances/morpho-blue/MorphoBlue_wstETH_USDA_Hyperdrive.t.sol

@@ -76,6 +76,7 @@ contract MorphoBlue_wstETH_USDA_HyperdriveTest is
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 0,
                 closeShortWithSharesTolerance: 0,
+                closeLongWithBaseTolerance: 0,
                 roundTripLpInstantaneousWithSharesTolerance: 0,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 0,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 0,

test/instances/morpho-blue/MorphoBlue_wstETH_USDC_Hyperdrive.t.sol

@@ -79,6 +79,7 @@ contract MorphoBlue_wstETH_USDC_HyperdriveTest is
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 0,
                 closeShortWithSharesTolerance: 0,
+                closeLongWithBaseTolerance: 0,
                 roundTripLpInstantaneousWithSharesTolerance: 0,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 0,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 0,

test/instances/reth/RETHHyperdrive.t.sol

@@ -86,6 +86,7 @@ contract RETHHyperdriveTest is InstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 2e3,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 2e3,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/rseth-linea/RsETHLineaHyperdrive.t.sol

@@ -85,6 +85,7 @@ contract RsETHLineaHyperdriveTest is InstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 100,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 100,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e4,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,

test/instances/steth/StETHHyperdrive.t.sol

@@ -87,6 +87,7 @@ contract StETHHyperdriveTest is InstanceTest {
                 // The share test tolerances.
                 closeLongWithSharesTolerance: 20,
                 closeShortWithSharesTolerance: 100,
+                closeLongWithBaseTolerance: 20,
                 roundTripLpInstantaneousWithSharesTolerance: 1e5,
                 roundTripLpWithdrawalSharesWithSharesTolerance: 1e5,
                 roundTripLongInstantaneousWithSharesUpperBoundTolerance: 1e3,