Problem Mock & package.json

contracts/FundMe.sol

@@ -7,7 +7,7 @@
 pragma solidity ^0.8.0;
 
 import "./PriceConverter.sol";
-// Save Gas - constant, immutable
+// Save Gas by using constant, immutable for variables
 
 error NotOwner();
 

contracts/PriceConverter.sol

@@ -6,10 +6,6 @@ import "@chainlink/contracts/src/v0.8/shared/interfaces/AggregatorV3Interface.so
 // Why is this a library and not abstract?
 // Why not an interface?
 library PriceConverter {
-    // Sepolia ETH / USD Address
-    // https://docs.chain.link/data-feeds/price-feeds/addresses#Sepolia%20Testnet
-    //0x694AA1769357215DE4FAC081bf1f309aDC325306
-
     // We could make this public, but then we'd have to deploy it
     function getPrice(
         AggregatorV3Interface priceFeed

contracts/test/MockV3Aggregator.sol

@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.8;
+
+import "@chainlink/contracts/src/v0.8/tests/MockV3Aggregator.sol";
+
+// Direct import from the github, located at local node_modules

deploy/00-deploy-mocks.js

@@ -1,9 +0,0 @@
-// For Localhost, Hardhat, Ganache Without Price Feed To Get Price Feed
-
-const { ethers, run, network } = require("hardhat");
-
-module.exports = async ({ getNamedAccounts, deployments }) => {
-    const { deploy, log } = deployments;
-    const { deployer } = await getNamedAccounts();
-    const chainId = network.config.chainId;
-};

deploy/01-deploy-fund-me.js

@@ -6,18 +6,28 @@ const { networkConfig } = require("../helper-hardhat-config");
     const networkConfig = helperConfig.networkConfig;
 */
 
-// main function
-//function deployFunc() {
-//    const {getNamedAccounts, deployments} = hre;
-//    // Same as hre.getNamedAccounts & hre.deployments
-//}
-//module.exports.default = deployFunc;
+/*
+// main function that auto run via hardhat deploy
+function deployFunc() {
+    const { getNamedAccounts, deployments } = hre; // Hardhat runtime environment
+    // Same as hre.getNamedAccounts & hre.deployments
+    console.log("Hello World!");
+}
+module.exports.default = deployFunc;
+*/
 
 module.exports = async ({ getNamedAccounts, deployments }) => {
     const { deploy, log } = deployments;
-    const { deployer } = await getNamedAccounts();
+    const { deployer } = await getNamedAccounts(); // Take from hardhat.config.js namedAccounts
     const chainId = network.config.chainId;
 
+    if (networkConfig[chainId] === undefined) {
+        console.log("Is Not Testnet / Mainnet! No Mock Up...");
+        console.log(deployments);
+        const ethUsdAggregator = await deployments.get("MockV3Aggregator");
+        return;
+    }
+
     const ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"];
 
     // if contract doest't exist, we deploy a minimal version for our local testing

deprecated/00-deploy-mocks.js

@@ -0,0 +1,33 @@
+// For Localhost, Hardhat, Ganache Without Price Feed To Get Price Feed
+
+const { ethers, run, network } = require("hardhat");
+const {
+    developmentChains,
+    DECIMALS,
+    INITIAL_ANSWER,
+} = require("../helper-hardhat-config");
+
+module.exports = async ({ getNamedAccounts, deployments }) => {
+    const { deploy, log } = deployments;
+    const { deployer } = await getNamedAccounts();
+    const chainId = network.config.chainId;
+    const networkName = network.name;
+
+    // Don't deploy mock contract to real blockchain with price feed
+    // Here can chekc with chainId as well
+    if (developmentChains.includes(networkName)) {
+        log("Local network '" + networkName + "', deploying mocks...");
+        /*
+        await deploy(MockV3Aggregator, {
+            contract: "MockV3Aggregator",
+            from: deployer,
+            log: true,
+            args: [DECIMALS, INITIAL_ANSWER],
+        });
+        */
+        log("Mocks deployed!");
+        log("=====================================");
+    }
+};
+
+module.exports.tags = ["all", "mocks"];

hardhat.config.js

@@ -7,7 +7,6 @@ require("dotenv").config();
 require("./tasks/block-number");
 require("hardhat-gas-reporter");
 require("solidity-coverage");
-require("ethereum-waffle");
 require("hardhat-deploy");
 
 const RPC_URL_SEPOLIA = process.env.SEPOLIA_RPC_URL || "https://eth-sepolia";
@@ -63,7 +62,6 @@ module.exports = {
         outputFile: "gas-report.txt",
         noColors: true,
     },
-    plugins: ["@nomiclabs/hardhat-waffle"],
     namedAccounts: {
         deployer: {
             default: 0,

helper-hardhat-config.js

@@ -19,6 +19,13 @@ const networkConfig = {
     },
 };
 
+const developmentChains = ["hardhat", "localhost"];
+const DECIMALS = 8;
+const INITIAL_ANSWER = 200000000000;
+
 module.exports = {
     networkConfig,
+    developmentChains,
+    DECIMALS,
+    INITIAL_ANSWER,
 };

package.json

@@ -21,10 +21,10 @@
     "@types/mocha": ">=9.1.0",
     "chai": "^4.2.0",
     "dotenv": "^16.4.5",
-    "ethereum-waffle": "^4.0.10",
-    "ethers": "^5.7.0",
+    "ethers": "^5.7.2",
     "hardhat": "^2.22.7",
     "hardhat-deploy": "^0.12.4",
+    "hardhat-deploy-ethers": "^0.4.2",
     "hardhat-gas-reporter": "^1.0.8",
     "prettier": "^3.3.3",
     "prettier-plugin-solidity": "^1.3.1",

scripts/deploy.js

@@ -1,26 +1,11 @@
 // imports
 const { ethers, run, network } = require("hardhat");
+const { exit } = require("process");
 
 // async main
 async function main() {
-    const verifyOnly = false;
-    if (verifyOnly == true) {
-        const address = "0xF90F7edF515001CD4293255bfaF7D17ffa415e91";
-
-        const ETHERSCAN_API_KEY_VERIFY = process.env.ETHERSCAN_API_KEY;
-        console.log("Network config:", network.config);
-        console.log("ChainId: " + network.config.chainId);
-        if (network.config.chainId === 11155111) {
-            console.log("Currently on Sepolia Testnet");
-            if (ETHERSCAN_API_KEY_VERIFY !== undefined) {
-                console.log("Verifying contract...");
-                await verify(address, []);
-                console.log("Verification complete");
-            } else {
-                console.log("ETHERSCAN_API_KEY is undefined");
-            }
-        }
-        if (true) return;
+    if (false) {
+        await runVerifyOnly("0xF90F7edF515001CD4293255bfaF7D17ffa415e91");
     }
 
     const simpleStorageFactory =
@@ -85,6 +70,23 @@ async function verify(contractAddress, args) {
     }
 }
 
+async function runVerifyOnly(address) {
+    const ETHERSCAN_API_KEY_VERIFY = process.env.ETHERSCAN_API_KEY;
+    console.log("Network config:", network.config);
+    console.log("ChainId: " + network.config.chainId);
+    if (network.config.chainId === 11155111) {
+        console.log("Currently on Sepolia Testnet");
+        if (ETHERSCAN_API_KEY_VERIFY !== undefined) {
+            console.log("Verifying contract...");
+            await verify(address, []);
+            console.log("Verification complete");
+        } else {
+            console.log("ETHERSCAN_API_KEY is undefined");
+        }
+    }
+    process.exit(1);
+}
+
 // main
 main()
     .then(() => process.getMaxListeners(0))