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.
99 lines
3.4 KiB
99 lines
3.4 KiB
const { assertRevert } = require('../../helpers/assertRevert');
|
|
const expectEvent = require('../../helpers/expectEvent');
|
|
|
|
const BigNumber = web3.BigNumber;
|
|
const ZERO_ADDRESS = '0x0000000000000000000000000000000000000000';
|
|
|
|
require('chai')
|
|
.use(require('chai-bignumber')(BigNumber))
|
|
.should();
|
|
|
|
function shouldBehaveLikeBurnableToken (owner, initialBalance, [burner]) {
|
|
describe('burn', function () {
|
|
describe('when the given amount is not greater than balance of the sender', function () {
|
|
const amount = 100;
|
|
|
|
beforeEach(async function () {
|
|
({ logs: this.logs } = await this.token.burn(amount, { from: owner }));
|
|
});
|
|
|
|
it('burns the requested amount', async function () {
|
|
(await this.token.balanceOf(owner)).should.be.bignumber.equal(initialBalance - amount);
|
|
});
|
|
|
|
it('emits a burn event', async function () {
|
|
const event = expectEvent.inLogs(this.logs, 'Burn');
|
|
event.args.burner.should.eq(owner);
|
|
event.args.value.should.be.bignumber.equal(amount);
|
|
});
|
|
|
|
it('emits a transfer event', async function () {
|
|
const event = expectEvent.inLogs(this.logs, 'Transfer');
|
|
event.args.from.should.eq(owner);
|
|
event.args.to.should.eq(ZERO_ADDRESS);
|
|
event.args.value.should.be.bignumber.equal(amount);
|
|
});
|
|
});
|
|
|
|
describe('when the given amount is greater than the balance of the sender', function () {
|
|
const amount = initialBalance + 1;
|
|
|
|
it('reverts', async function () {
|
|
await assertRevert(this.token.burn(amount, { from: owner }));
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('burnFrom', function () {
|
|
describe('on success', function () {
|
|
const amount = 100;
|
|
|
|
beforeEach(async function () {
|
|
await this.token.approve(burner, 300, { from: owner });
|
|
const { logs } = await this.token.burnFrom(owner, amount, { from: burner });
|
|
this.logs = logs;
|
|
});
|
|
|
|
it('burns the requested amount', async function () {
|
|
(await this.token.balanceOf(owner)).should.be.bignumber.equal(initialBalance - amount);
|
|
});
|
|
|
|
it('decrements allowance', async function () {
|
|
(await this.token.allowance(owner, burner)).should.be.bignumber.equal(200);
|
|
});
|
|
|
|
it('emits a burn event', async function () {
|
|
const event = expectEvent.inLogs(this.logs, 'Burn');
|
|
event.args.burner.should.eq(owner);
|
|
event.args.value.should.be.bignumber.equal(amount);
|
|
});
|
|
|
|
it('emits a transfer event', async function () {
|
|
const event = expectEvent.inLogs(this.logs, 'Transfer');
|
|
event.args.from.should.eq(owner);
|
|
event.args.to.should.eq(ZERO_ADDRESS);
|
|
event.args.value.should.be.bignumber.equal(amount);
|
|
});
|
|
});
|
|
|
|
describe('when the given amount is greater than the balance of the sender', function () {
|
|
const amount = initialBalance + 1;
|
|
it('reverts', async function () {
|
|
await this.token.approve(burner, amount, { from: owner });
|
|
await assertRevert(this.token.burnFrom(owner, amount, { from: burner }));
|
|
});
|
|
});
|
|
|
|
describe('when the given amount is greater than the allowance', function () {
|
|
const amount = 100;
|
|
it('reverts', async function () {
|
|
await this.token.approve(burner, amount - 1, { from: owner });
|
|
await assertRevert(this.token.burnFrom(owner, amount, { from: burner }));
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
module.exports = {
|
|
shouldBehaveLikeBurnableToken,
|
|
};
|
|
|