BR Academy

Smart Contract Development with Solidity: Zero to Deployed

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← Smart Contract Development with Solidity: Zero to Deployed

1Solidity Foundations0/4

Solidity Syntax, Types, and Operators15m
Storage vs Memory vs Calldata, Gas Implications
Functions, Visibility, Modifiers, and State Changes
Events, Indexed Parameters, and Off-Chain Indexing
Module quiz

2Object-Oriented Solidity0/3

Inheritance, Interfaces, and Abstract Contracts
Libraries, Using-For, and Code Reuse
Custom Errors, Require/Assert/Revert, and Gas Savings
Module quiz

3Token Standards & OpenZeppelin0/4

Build an ERC-20 Token from the Spec
ERC-20 with OpenZeppelin, Extensions, and Minting
Build an ERC-721 NFT from the Spec
ERC-721 with OpenZeppelin, Metadata, and Enumeration
Module quiz

4Testing & Gas Optimization0/4

Foundry Setup, Writing Tests, and Assertions
Hardhat Testing, Fixtures, and Coverage
Profiling Gas, Identifying Bottlenecks, and Optimization Patterns
Storage Packing, Immutables, and Assembly Tricks
Module quiz

5Deployment & Verification0/4

Deploying to Sepolia, Goerli, and Other Testnets
Deploying to Mainnet, Managing Keys, and Transaction Costs
Verifying Contracts on Etherscan and Block Explorers
Pre-Deployment Audit, Common Vulnerabilities, and Best Practices
Module quiz

6Advanced Patterns0/3

UUPS and Transparent Proxies, Storage Layout, and Risks
Role-Based Access Control, OpenZeppelin AccessControl
Reentrancy Attacks, Checks-Effects-Interactions, and Guards
Module quiz

7Capstone Project0/1

Capstone: Deploy a Custom ERC-20 with Minting, Burning, and Access Control
Module quiz

Testing & Gas Optimization·Lesson 13 of 23·15 min

Hardhat Testing, Fixtures, and Coverage

This lesson is for enrolled learners

The concept Hardhat is a JavaScript/TypeScript-based Ethereum development environment — where Foundry writes tests in Solidity, Hardhat writes them in Mocha (the test runner) and Chai (the assertion library), talking to your contracts through ethers.js (or viem). This matters because most front-end and tooling teams already live in the JS/TS ecosystem, and Hardhat tests can share types, fixtures, and CI……

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