mirror of openzeppelin-contracts
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
openzeppelin-contracts/test/token/ERC6909/extensions/ERC6909TokenSupply.test.js

53 lines
1.9 KiB

const { ethers } = require('hardhat');
const { expect } = require('chai');
const { loadFixture } = require('@nomicfoundation/hardhat-network-helpers');
const { shouldBehaveLikeERC6909 } = require('../ERC6909.behavior');
async function fixture() {
const [holder, operator, recipient, other] = await ethers.getSigners();
const token = await ethers.deployContract('$ERC6909TokenSupply');
return { token, holder, operator, recipient, other };
}
describe('ERC6909TokenSupply', function () {
beforeEach(async function () {
Object.assign(this, await loadFixture(fixture));
});
shouldBehaveLikeERC6909();
describe('totalSupply', function () {
it('is zero before any mint', async function () {
await expect(this.token.totalSupply(1n)).to.eventually.be.equal(0n);
});
it('minting tokens increases the total supply', async function () {
await this.token.$_mint(this.holder, 1n, 17n);
await expect(this.token.totalSupply(1n)).to.eventually.be.equal(17n);
});
describe('with tokens minted', function () {
const supply = 1000n;
beforeEach(async function () {
await this.token.$_mint(this.holder, 1n, supply);
});
it('burning tokens decreases the total supply', async function () {
await this.token.$_burn(this.holder, 1n, 17n);
await expect(this.token.totalSupply(1n)).to.eventually.be.equal(supply - 17n);
});
it('supply unaffected by transfers', async function () {
await this.token.$_transfer(this.holder, this.recipient, 1n, 42n);
await expect(this.token.totalSupply(1n)).to.eventually.be.equal(supply);
});
it('supply unaffected by no-op', async function () {
await this.token.$_update(ethers.ZeroAddress, ethers.ZeroAddress, 1n, 42n);
await expect(this.token.totalSupply(1n)).to.eventually.be.equal(supply);
});
});
});
});