5dfe7215a9
* Initial migration to Solidity 0.6.x - v3.0 first steps (#2063) * Initial migration, missing GSN, 721, 777 and Crowdsales. * Add _beforeTokenOperation and _afterTokenOperation. * Add documentation for hooks. * Add hooks doc * Add missing drafts * Add back ERC721 with hooks * Bring back ERC777 * Notes on hooks * Bring back GSN * Make functions virtual * Make GSN overrides explicit * Fix ERC20Pausable tests * Remove virtual from some view functions * Update linter * Delete examples * Remove unnecessary virtual * Remove roles from Pausable * Remove roles * Remove users of roles * Adapt ERC20 tests * Fix ERC721 tests * Add all ERC721 hooks * Add ERC777 hooks * Fix remaining tests * Bump compiler version * Move 721BurnableMock into mocks directory * Remove _before hooks * Fix tests * Upgrade linter * Put modifiers last * Remove _beforeTokenApproval and _beforeOperatorApproval hooks
80 lines
2.9 KiB
JavaScript
80 lines
2.9 KiB
JavaScript
const { accounts, contract } = require('@openzeppelin/test-environment');
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const { BN, expectRevert } = require('@openzeppelin/test-helpers');
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const { expect } = require('chai');
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const ERC20PausableMock = contract.fromArtifact('ERC20PausableMock');
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describe('ERC20Pausable', function () {
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const [ holder, recipient, anotherAccount ] = accounts;
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const initialSupply = new BN(100);
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beforeEach(async function () {
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this.token = await ERC20PausableMock.new(holder, initialSupply);
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});
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describe('pausable token', function () {
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describe('transfer', function () {
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it('allows to transfer when unpaused', async function () {
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await this.token.transfer(recipient, initialSupply, { from: holder });
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expect(await this.token.balanceOf(holder)).to.be.bignumber.equal('0');
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expect(await this.token.balanceOf(recipient)).to.be.bignumber.equal(initialSupply);
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});
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it('allows to transfer when paused and then unpaused', async function () {
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await this.token.pause();
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await this.token.unpause();
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await this.token.transfer(recipient, initialSupply, { from: holder });
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expect(await this.token.balanceOf(holder)).to.be.bignumber.equal('0');
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expect(await this.token.balanceOf(recipient)).to.be.bignumber.equal(initialSupply);
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});
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it('reverts when trying to transfer when paused', async function () {
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await this.token.pause();
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await expectRevert(this.token.transfer(recipient, initialSupply, { from: holder }),
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'ERC20Pausable: token transfer while paused'
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);
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});
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});
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describe('transfer from', function () {
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const allowance = new BN(40);
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beforeEach(async function () {
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await this.token.approve(anotherAccount, allowance, { from: holder });
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});
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it('allows to transfer from when unpaused', async function () {
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await this.token.transferFrom(holder, recipient, allowance, { from: anotherAccount });
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expect(await this.token.balanceOf(recipient)).to.be.bignumber.equal(allowance);
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expect(await this.token.balanceOf(holder)).to.be.bignumber.equal(initialSupply.sub(allowance));
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});
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it('allows to transfer when paused and then unpaused', async function () {
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await this.token.pause();
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await this.token.unpause();
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await this.token.transferFrom(holder, recipient, allowance, { from: anotherAccount });
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expect(await this.token.balanceOf(recipient)).to.be.bignumber.equal(allowance);
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expect(await this.token.balanceOf(holder)).to.be.bignumber.equal(initialSupply.sub(allowance));
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});
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it('reverts when trying to transfer from when paused', async function () {
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await this.token.pause();
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await expectRevert(this.token.transferFrom(
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holder, recipient, allowance, { from: anotherAccount }), 'ERC20Pausable: token transfer while paused'
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);
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});
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});
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});
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});
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