fix(framework): adjust setDirectPrice for decimals in simulations

Problem: setDirectPrice does not directly set the returned value
of the getPrice function. Rather, it is implied that the price is
scaled by 1e18. Thus, when we call getPrice, extra zeros get
appended to the price for tokens with < 18 decimals.

Solution: Do a reverse scaling, i.e. divide by 10**(18 - decimals)

src/utils.ts

@@ -5,6 +5,7 @@ import { NumberLike } from "@nomicfoundation/hardhat-network-helpers/dist/src/ty
 import { SignerWithAddress } from "@nomiclabs/hardhat-ethers/signers";
 import { expect } from "chai";
 import { BigNumber, Contract, utils } from "ethers";
+import { parseUnits } from "ethers/lib/utils";
 import { FORKED_NETWORK, config, ethers, network } from "hardhat";
 import { EthereumProvider } from "hardhat/types";
 
@@ -316,6 +317,7 @@ export const setRedstonePrice = async (
   feed: string,
   admin: string,
   maxStalePeriodInSeconds: number = ONE_YEAR,
+  { tokenDecimals }: { tokenDecimals?: number } = {},
 ) => {
   const rsOracle = new ethers.Contract(redstoneOracleAddress, CHAINLINK_ORACLE_ABI, ethers.provider);
   const oracleAdmin = await initMainnetUser(admin, ethers.utils.parseEther("1.0"));
@@ -334,7 +336,19 @@ export const setRedstonePrice = async (
     maxStalePeriod: maxStalePeriodInSeconds,
   });
   const price = await rsOracle.getPrice(asset);
-  await rsOracle.connect(oracleAdmin).setDirectPrice(asset, price);
+
+  // Since our oracle adjusts the configured price for token decimals internally,
+  // we need to do the reverse operation here so that the result of the getPrice()
+  // call before setting the direct value is equal to the result of the same call
+  // after we set the price
+  const decimalDelta = 18 - (tokenDecimals ?? 18);
+  const adjustedPrice = price.div(parseUnits("1", decimalDelta));
+  await rsOracle.connect(oracleAdmin).setDirectPrice(asset, adjustedPrice);
+  const priceAfter = await rsOracle.getPrice(asset);
+
+  if (!price.eq(priceAfter)) {
+    throw new Error("Price is not correctly configured, try setting token decimals");
+  }
 };
 
 export const getForkedNetworkAddress = (contractName: string) => {