Testing ERC20 Smart Contracts in Typescript & Hardhat

Testing with ethers.js & Waffle & Typescript & Hardhat

Photo by Fotis Fotopoulos on Unsplash

Today, I will explain some testing examples of erc20 smart contracts using Typescript and Hardhat. If you are new to hardhat, this tutorial might help!

Testing ERC20 Token

This is a simple erc20 token smart contract using openzeppelin.

The example test for above contract is as follows:

Typechain

You can add typescript bindings for your smart contracts by using typechain. Just install dependencies listed below and import @typechain/hardhat at hardhat.config.ts, then when you compile contracts, it will automatically create typescript bindings in typechain folder in the root directory.

yuichiroaoki/kuji

add typescript bindings

Or you can clone above repository and try it on your own.

Hope this helps. Thank you for reading 😁

References

• https://docs.openzeppelin.com/contracts/4.x/
• https://hardhat.org/tutorial/testing-contracts.html
• https://hardhat.org/plugins/hardhat-typechain.html