isabella232 / token-sample-erc20

Sample ERC20 token smart contract

token-sample-erc20

The purpose of this sample project is demonstrating ERC20 token contracts based on the awesome openzeppelin contract library, and features of the ERC20 token specification with truffel test scenarios.

Token Contracts Demonstrated

The contracts with the features and tested scenarios are listed below.

Fixed Supply

contracts/ERC20FixedSupply.sol

constructor
  ✓ initialized with the correct supply (118ms)
  ✓ check the contract deployer is the new owner and has all the money (45ms)
adding spenders that can transfer money on behalf of the token owner
  ✓ current owner approves a new account to be the spender (60ms)
transfer
  ✓ current owner transfers to the spender (131ms)
  ✓ spender transfers from its own pocket to user1 (81ms)
  ✓ spender transfers from the custody account to user1 (109ms)

Mintable

contracts/ERC20MintableWithInitialSupply.sol

constructor
  ✓ initialized with the correct supply (144ms)
  ✓ check the contract deployer is the new owner and has all the money
adding spenders that can transfer money on behalf of the token owner
  ✓ current owner approves a new account to be the spender (50ms)
transfer
  ✓ current owner transfers to the spender (49ms)
  ✓ spender transfers from its own pocket to user1 (75ms)
  ✓ spender transfers from the custody account to user1 (96ms)
minters
  ✓ current owner is by default a minter and can mint more tokens out of thin air (60ms)
  ✓ current owner can add a new minter (60ms)
  ✓ a minter can make tokens as well (69ms)
  ✓ an altruistic minter can make tokens and give it to user1 (89ms)

Burnable

contracts/ERC20BurnableWithInitialSupply.sol

constructor
  ✓ initialized with the correct supply (109ms)
  ✓ check the contract deployer is the new owner and has all the money
adding spenders that can transfer money on behalf of the token owner
  ✓ current owner approves a new account to be the spender (92ms)
transfer
  ✓ current owner transfers to the spender (61ms)
  ✓ spender transfers from its own pocket to user1 (119ms)
  ✓ spender transfers from the custody account to user1 (164ms)
burn baby burn!
  ✓ current owner can burn tokens (117ms)
  ✓ spender can also burn its own tokens (84ms)
  ✓ spender can also burn tokens from its allowance (104ms)

Getting Started

Instal truffle

Install Ganache and start it

npm i
truffle test