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openzeppelin-contracts/test/token/ERC20/extensions/ERC20Capped.behavior.js

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const { expect } = require('chai');
const { expectRevertCustomError } = require('../../../helpers/customError');
function shouldBehaveLikeERC20Capped(accounts, cap) {
describe('capped token', function () {
const user = accounts[0];
it('starts with the correct cap', async function () {
expect(await this.token.cap()).to.be.bignumber.equal(cap);
});
it('mints when amount is less than cap', async function () {
await this.token.$_mint(user, cap.subn(1));
expect(await this.token.totalSupply()).to.be.bignumber.equal(cap.subn(1));
});
it('fails to mint if the amount exceeds the cap', async function () {
await this.token.$_mint(user, cap.subn(1));
await expectRevertCustomError(this.token.$_mint(user, 2), 'ERC20ExceededCap', [cap.addn(1), cap]);
});
it('fails to mint after cap is reached', async function () {
await this.token.$_mint(user, cap);
await expectRevertCustomError(this.token.$_mint(user, 1), 'ERC20ExceededCap', [cap.addn(1), cap]);
});
});
}
module.exports = {
shouldBehaveLikeERC20Capped,
};