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Added mint and burn tests for zero amounts. (#1230)

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This commit is contained in:
Nicolás Venturo
2018-08-23 06:07:34 -03:00
committed by GitHub
parent 2adb491637
commit d58fac8281
2 changed files with 87 additions and 59 deletions
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96
test/token/ERC20/BurnableToken.behavior.js
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@ -11,28 +11,36 @@ require('chai')
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 }));
context('for a zero amount', function () {
shouldBurn(0);
});
it('burns the requested amount', async function () {
(await this.token.balanceOf(owner)).should.be.bignumber.equal(initialBalance - amount);
context('for a non-zero amount', function () {
shouldBurn(100);
});
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);
});
function shouldBurn (amount) {
beforeEach(async function () {
({ logs: this.logs } = await this.token.burn(amount, { from: owner }));
});
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);
});
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 () {
@ -46,34 +54,44 @@ function shouldBehaveLikeBurnableToken (owner, initialBalance, [burner]) {
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;
context('for a zero amount', function () {
shouldBurnFrom(0);
});
it('burns the requested amount', async function () {
(await this.token.balanceOf(owner)).should.be.bignumber.equal(initialBalance - amount);
context('for a non-zero amount', function () {
shouldBurnFrom(100);
});
it('decrements allowance', async function () {
(await this.token.allowance(owner, burner)).should.be.bignumber.equal(200);
});
function shouldBurnFrom (amount) {
const originalAllowance = amount * 3;
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);
});
beforeEach(async function () {
await this.token.approve(burner, originalAllowance, { from: owner });
const { logs } = await this.token.burnFrom(owner, amount, { from: burner });
this.logs = logs;
});
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);
});
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(originalAllowance - 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 () {