07603d5875
* Refactor Counter to support increment and decrement. * Move Counter out of drafts. * Refactor ERC721 to use Counter. * Rollback Counter returning the current value in increment and decrement. * Update test/drafts/Counter.test.js Co-Authored-By: nventuro <nicolas.venturo@gmail.com> * Improve Counter documentation. * Move Counter.test to utils. * Move back Counter to drafts.
59 lines
1.7 KiB
JavaScript
59 lines
1.7 KiB
JavaScript
const { shouldFail } = require('openzeppelin-test-helpers');
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const CountersImpl = artifacts.require('CountersImpl');
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contract('Counters', function () {
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beforeEach(async function () {
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this.counter = await CountersImpl.new();
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});
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it('starts at zero', async function () {
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(await this.counter.current()).should.be.bignumber.equal('0');
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});
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describe('increment', function () {
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it('increments the current value by one', async function () {
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await this.counter.increment();
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(await this.counter.current()).should.be.bignumber.equal('1');
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});
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it('can be called multiple times', async function () {
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await this.counter.increment();
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await this.counter.increment();
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await this.counter.increment();
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(await this.counter.current()).should.be.bignumber.equal('3');
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});
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});
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describe('decrement', function () {
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beforeEach(async function () {
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await this.counter.increment();
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(await this.counter.current()).should.be.bignumber.equal('1');
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});
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it('decrements the current value by one', async function () {
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await this.counter.decrement();
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(await this.counter.current()).should.be.bignumber.equal('0');
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});
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it('reverts if the current value is 0', async function () {
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await this.counter.decrement();
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await shouldFail.reverting(this.counter.decrement());
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});
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it('can be called multiple times', async function () {
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await this.counter.increment();
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await this.counter.increment();
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(await this.counter.current()).should.be.bignumber.equal('3');
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await this.counter.decrement();
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await this.counter.decrement();
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await this.counter.decrement();
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(await this.counter.current()).should.be.bignumber.equal('0');
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});
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});
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});
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