test: add simple tests with ChainlinkOracle

Author: MerlinEgalite

test/ChainlinkOracleTest.sol

@@ -5,27 +5,7 @@ import "../lib/forge-std/src/Test.sol";
 import "../src/ChainlinkOracle.sol";
 import "../src/libraries/ErrorsLib.sol";
 import "./mocks/ChainlinkAggregatorMock.sol";
-
-AggregatorV3Interface constant feedZero = AggregatorV3Interface(address(0));
-// 8 decimals of precision
-AggregatorV3Interface constant btcUsdFeed = AggregatorV3Interface(0xF4030086522a5bEEa4988F8cA5B36dbC97BeE88c);
-// 8 decimals of precision
-AggregatorV3Interface constant usdcUsdFeed = AggregatorV3Interface(0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6);
-// 18 decimals of precision
-AggregatorV3Interface constant btcEthFeed = AggregatorV3Interface(0xdeb288F737066589598e9214E782fa5A8eD689e8);
-// 8 decimals of precision
-AggregatorV3Interface constant wBtcBtcFeed = AggregatorV3Interface(0xfdFD9C85aD200c506Cf9e21F1FD8dd01932FBB23);
-// 18 decimals of precision
-AggregatorV3Interface constant stEthEthFeed = AggregatorV3Interface(0x86392dC19c0b719886221c78AB11eb8Cf5c52812);
-// 18 decimals of precision
-AggregatorV3Interface constant usdcEthFeed = AggregatorV3Interface(0x986b5E1e1755e3C2440e960477f25201B0a8bbD4);
-// 8 decimals of precision
-AggregatorV3Interface constant ethUsdFeed = AggregatorV3Interface(0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419);
-// 18 decimals of precision
-AggregatorV3Interface constant daiEthFeed = AggregatorV3Interface(0x773616E4d11A78F511299002da57A0a94577F1f4);
-
-IERC4626 constant vaultZero = IERC4626(address(0));
-IERC4626 constant sDaiVault = IERC4626(0x83F20F44975D03b1b09e64809B757c47f942BEeA);
+import "./helpers/Constants.sol";
 
 contract ChainlinkOracleTest is Test {
     function setUp() public {

test/WstEthEthExchangeRateChainlinkAdapterTest.sol

@@ -5,15 +5,28 @@ import "../src/libraries/ErrorsLib.sol";
 
 import "../lib/forge-std/src/Test.sol";
 import "../src/adapters/WstEthEthExchangeRateChainlinkAdapter.sol";
+import "../src/ChainlinkOracle.sol";
+import "./helpers/Constants.sol";
 
 contract WstEthEthExchangeRateChainlinkAdapterTest is Test {
     IStEth internal constant ST_ETH = IStEth(0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84);
 
     WstEthEthExchangeRateChainlinkAdapter internal oracle;
+    ChainlinkOracle internal chainlinkOracle;
 
     function setUp() public {
         vm.createSelectFork(vm.envString("ETH_RPC_URL"));
         oracle = new WstEthEthExchangeRateChainlinkAdapter(address(ST_ETH));
+        chainlinkOracle = new ChainlinkOracle(
+            vaultZero,
+            oracle,
+            feedZero,
+            feedZero,
+            feedZero,
+            1,
+            18,
+            18
+        );
     }
 
     function testDecimals() public {
@@ -53,4 +66,9 @@ contract WstEthEthExchangeRateChainlinkAdapterTest is Test {
         assertGe(uint256(answer), 1154690031824824994); // Exchange rate queried at block 19070943
         assertLe(uint256(answer), 1.5e18); // Max bounds of the exchange rate. Should work for a long enough time.
     }
+
+    function testOracleWstEthEthExchangeRate() public {
+        (, int256 expectedPrice,,,) = oracle.latestRoundData();
+        assertEq(chainlinkOracle.price(), uint256(expectedPrice) * 10 ** (36 + 18 - 18 - 18));
+    }
 }

test/helpers/Constants.sol

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+pragma solidity ^0.8.0;
+
+import {IERC4626, AggregatorV3Interface} from "../../src/ChainlinkOracle.sol";
+
+AggregatorV3Interface constant feedZero = AggregatorV3Interface(address(0));
+// 8 decimals of precision
+AggregatorV3Interface constant btcUsdFeed = AggregatorV3Interface(0xF4030086522a5bEEa4988F8cA5B36dbC97BeE88c);
+// 8 decimals of precision
+AggregatorV3Interface constant usdcUsdFeed = AggregatorV3Interface(0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6);
+// 18 decimals of precision
+AggregatorV3Interface constant btcEthFeed = AggregatorV3Interface(0xdeb288F737066589598e9214E782fa5A8eD689e8);
+// 8 decimals of precision
+AggregatorV3Interface constant wBtcBtcFeed = AggregatorV3Interface(0xfdFD9C85aD200c506Cf9e21F1FD8dd01932FBB23);
+// 18 decimals of precision
+AggregatorV3Interface constant stEthEthFeed = AggregatorV3Interface(0x86392dC19c0b719886221c78AB11eb8Cf5c52812);
+// 18 decimals of precision
+AggregatorV3Interface constant usdcEthFeed = AggregatorV3Interface(0x986b5E1e1755e3C2440e960477f25201B0a8bbD4);
+// 8 decimals of precision
+AggregatorV3Interface constant ethUsdFeed = AggregatorV3Interface(0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419);
+// 18 decimals of precision
+AggregatorV3Interface constant daiEthFeed = AggregatorV3Interface(0x773616E4d11A78F511299002da57A0a94577F1f4);
+
+IERC4626 constant vaultZero = IERC4626(address(0));
+IERC4626 constant sDaiVault = IERC4626(0x83F20F44975D03b1b09e64809B757c47f942BEeA);