iau

Author: Siddharth2207

src/lib/pyth/LibPyth.sol

@@ -87,6 +87,12 @@ library LibPyth {
     // slither-disable-next-line too-many-digits
     uint256 constant PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_SPLG_USD =
         0x924571756974792e55532e53504c472f55534400000000000000000000000000;
+    /// iShares Gold Trust (IAU)
+    bytes32 constant PRICE_FEED_ID_EQUITY_US_IAU_USD =
+        0xf703fbded84f7da4bd9ff4661b5d1ffefa8a9c90b7fa12f247edc8251efac914;
+    // slither-disable-next-line too-many-digits
+    uint256 constant PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_IAU_USD =
+        0x914571756974792e55532e4941552f5553440000000000000000000000000000;
 
     /// TODO replace with O(1) lookup table.
     function getPriceFeedContract(uint256 chainId) internal pure returns (IPyth) {
@@ -124,6 +130,8 @@ library LibPyth {
             return PRICE_FEED_ID_EQUITY_US_BRK_B_USD;
         } else if (feedSymbol == PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_SPLG_USD) {
             return PRICE_FEED_ID_EQUITY_US_SPLG_USD;
+        } else if (feedSymbol == PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_IAU_USD) {
+            return PRICE_FEED_ID_EQUITY_US_IAU_USD;
         } else {
             revert UnsupportedFeedSymbol();
         }

test/src/lib/pyth/LibPyth.constants.t.sol

@@ -57,5 +57,9 @@ contract LibPythConstantsTest is Test {
             LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_SPLG_USD,
             IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.SPLG/USD"))
         );
+        assertEq(
+            LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_IAU_USD,
+            IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.IAU/USD"))
+        );
     }
 }

test/src/lib/pyth/LibPyth.getPriceFeedId.t.sol

@@ -57,6 +57,10 @@ contract LibPythGetPriceFeedIdTest is Test {
             LibPyth.PRICE_FEED_ID_EQUITY_US_SPLG_USD,
             LibPyth.getPriceFeedId(LibIntOrAString.fromString2("Equity.US.SPLG/USD"))
         );
+        assertEq(
+            LibPyth.PRICE_FEED_ID_EQUITY_US_IAU_USD,
+            LibPyth.getPriceFeedId(LibIntOrAString.fromString2("Equity.US.IAU/USD"))
+        );
     }
 
     function testPriceFeedIdUnknownMappings(IntOrAString symbol) external {
@@ -72,6 +76,7 @@ contract LibPythGetPriceFeedIdTest is Test {
                 && IntOrAString.unwrap(symbol) != IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.MSTR/USD"))
                 && IntOrAString.unwrap(symbol) != IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.BRK-B/USD"))
                 && IntOrAString.unwrap(symbol) != IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.SPLG/USD"))
+                && IntOrAString.unwrap(symbol) != IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.IAU/USD"))
         );
         vm.expectRevert(UnsupportedFeedSymbol.selector);
         this.getPriceFeedIdExternal(symbol);

test/src/lib/pyth/LibPyth.getPriceNoOlderThan.t.sol

@@ -150,5 +150,12 @@ contract LibPythGetPriceNoOlderThanTest is Test {
             LibDecimalFloat.packLossless(78.71367e5, -5),
             LibDecimalFloat.packLossless(0.03281e5, -5)
         );
+
+        checkPriceNoOlderThan(
+            LibIntOrAString.fromString2("Equity.US.IAU/USD"),
+            LibDecimalFloat.packLossless(24 hours, 0),
+            LibDecimalFloat.packLossless(71.99028e5, -5),
+            LibDecimalFloat.packLossless(0.07147e5, -5)
+        );
     }
 }