Add renzoOracle() getter (#857)

* return immutable value

* add renzoOracle getter

* git publish

* fix nits

Author: sentilesdal

contracts/src/instances/ezeth/EzETHTarget0.sol

@@ -6,7 +6,7 @@ import { SafeERC20 } from "openzeppelin/token/ERC20/utils/SafeERC20.sol";
 import { HyperdriveTarget0 } from "../../external/HyperdriveTarget0.sol";
 import { IHyperdrive } from "../../interfaces/IHyperdrive.sol";
 import { IERC20 } from "../../interfaces/IERC20.sol";
-import { IRestakeManager } from "../../interfaces/IRenzo.sol";
+import { IRestakeManager, IRenzoOracle } from "../../interfaces/IRenzo.sol";
 import { EzETHBase } from "./EzETHBase.sol";
 
 /// @author DELV
@@ -31,15 +31,21 @@ contract EzETHTarget0 is HyperdriveTarget0, EzETHBase {
     /// Extras ///
 
     /// @notice Returns the Renzo contract.
-    /// @return _restakeManager The Renzo contract.
+    /// @return The Renzo contract.
     function renzo() external view returns (IRestakeManager) {
         _revert(abi.encode(_restakeManager));
     }
 
     /// @notice Gets the ezETH token contract.
     /// @return The ezETH token contract.
     function ezETH() external view returns (IERC20) {
-        _revert(abi.encode(_restakeManager.ezETH()));
+        _revert(abi.encode(_ezETH));
+    }
+
+    /// @notice Gets the RenzoOracle contract.
+    /// @return The RenzoOracle contract.
+    function renzoOracle() external view returns (IRenzoOracle) {
+        _revert(abi.encode(_renzoOracle));
     }
 
     /// @notice Returns the MultiToken's decimals.

contracts/src/instances/steth/StETHTarget0.sol

@@ -31,7 +31,7 @@ contract StETHTarget0 is HyperdriveTarget0, StETHBase {
     /// Getters ///
 
     /// @notice Returns the Lido contract.
-    /// @return lido The Lido contract.
+    /// @return The Lido contract.
     function lido() external view returns (ILido) {
         _revert(abi.encode(_lido));
     }

contracts/src/interfaces/IEzETHHyperdriveRead.sol

@@ -2,7 +2,7 @@
 pragma solidity 0.8.20;
 
 import { IHyperdriveRead } from "./IHyperdriveRead.sol";
-import { IRestakeManager } from "./IRenzo.sol";
+import { IRestakeManager, IRenzoOracle } from "./IRenzo.sol";
 import { IERC20 } from "contracts/src/interfaces/IERC20.sol";
 
 interface IEzETHHyperdriveRead is IHyperdriveRead {
@@ -13,4 +13,8 @@ interface IEzETHHyperdriveRead is IHyperdriveRead {
     /// @notice Gets the ezETH token contract.
     /// @return The ezETH token contract.
     function ezETH() external view returns (IERC20);
+
+    /// @notice Gets the RenzoOracle contract.
+    /// @return The RenzoOracle contract.
+    function renzoOracle() external view returns (IRenzoOracle);
 }

test/instances/ezETH/EzETHHyperdrive.t.sol

@@ -248,6 +248,10 @@ contract EzETHHyperdriveTest is HyperdriveTest {
             address(IEzETHHyperdriveRead(address(hyperdrive)).ezETH()),
             address(EZETH)
         );
+        assertEq(
+            address(IEzETHHyperdriveRead(address(hyperdrive)).renzoOracle()),
+            address(RENZO_ORACLE)
+        );
     }
 
     /// Deploy and Initialize ///