text: const { accounts, contract } = require('@openzeppelin/test-environment');
  
  const { BN, ether, expectRevert } = require('@openzeppelin/test-helpers');
  
  const { expect } = require('chai');
  
  const IndividuallyCappedCrowdsaleImpl = contract.fromArtifact('IndividuallyCappedCrowdsaleImpl');
  const SimpleToken = contract.fromArtifact('SimpleToken');
  const { shouldBehaveLikePublicRole } = require('../behaviors/access/roles/PublicRole.behavior');
  
  describe('IndividuallyCappedCrowdsale', function () {
    const [ capper, otherCapper, wallet, alice, bob, charlie, other, ...otherAccounts ] = accounts;
  
    const rate = new BN(1);
    const capAlice = ether('10');
    const capBob = ether('2');
    const lessThanCapAlice = ether('6');
    const lessThanCapBoth = ether('1');
    const tokenSupply = new BN('10').pow(new BN('22'));
  
    beforeEach(async function () {
      this.token = await SimpleToken.new();
      this.crowdsale = await IndividuallyCappedCrowdsaleImpl.new(rate, wallet, this.token.address, { from: capper });
    });
  
    describe('capper role', function () {
      beforeEach(async function () {
        this.contract = this.crowdsale;
        await this.contract.addCapper(otherCapper, { from: capper });
      });
  
      shouldBehaveLikePublicRole(capper, otherCapper, otherAccounts, 'capper');
    });
  
    describe('individual caps', function () {
      it('sets a cap when the sender is a capper', async function () {
        await this.crowdsale.setCap(alice, capAlice, { from: capper });
        expect(await this.crowdsale.getCap(alice)).to.be.bignumber.equal(capAlice);
      });
  
      it('reverts when a non-capper sets a cap', async function () {
        await expectRevert(this.crowdsale.setCap(alice, capAlice, { from: other }),
          'CapperRole: caller does not have the Capper role'
        );
      });
  
      context('with individual caps', function () {
        beforeEach(async function () {
          await this.crowdsale.setCap(alice, capAlice, { from: capper });
          await this.crowdsale.setCap(bob, capBob, { from: capper });
          await this.token.transfer(this.crowdsale.address, tokenSupply);
        });
  
        describe('accepting payments', function () {
          it('should accept payments within cap', async function () {
            await this.crowdsale.buyTokens(alice, { value: lessThanCapAlice });
            await this.crowdsale.buyTokens(bob, { value: lessThanCapBoth });
          });
  
          it('should reject payments outside cap', async function () {
            await this.crowdsale.buyTokens(alice, { value: capAlice });
            await expectRevert(this.crowdsale.buyTokens(alice, { value: 1 }),
              'IndividuallyCappedCrowdsale: beneficiary\'s cap exceeded'
            );
          });
  
          it('should reject payments that exceed cap', async function () {
            await expectRevert(this.crowdsale.buyTokens(alice, { value: capAlice.addn(1) }),
              'IndividuallyCappedCrowdsale: beneficiary\'s cap exceeded'
            );
            await expectRevert(this.crowdsale.buyTokens(bob, { value: capBob.addn(1) }),
              'IndividuallyCappedCrowdsale: beneficiary\'s cap exceeded'
            );
          });
  
          it('should manage independent caps', async function () {
            await this.crowdsale.buyTokens(alice, { value: lessThanCapAlice });
            await expectRevert(this.crowdsale.buyTokens(bob, { value: lessThanCapAlice }),
              'IndividuallyCappedCrowdsale: beneficiary\'s cap exceeded'
            );
          });
  
          it('should default to a cap of zero', async function () {
            await expectRevert(this.crowdsale.buyTokens(charlie, { value: lessThanCapBoth }),
              'IndividuallyCappedCrowdsale: beneficiary\'s cap exceeded'
            );
          });
        });
  
        describe('reporting state', function () {
          it('should report correct cap', async function () {
            expect(await this.crowdsale.getCap(alice)).to.be.bignumber.equal(capAlice);
          });
  
          it('should report actual contribution', async function () {
            await this.crowdsale.buyTokens(alice, { value: lessThanCapAlice });
            expect(await this.crowdsale.getContribution(alice)).to.be.bignumber.equal(lessThanCapAlice);
          });
        });
      });
    });
  });
  