text: const { BN, constants, expectEvent, expectRevert } = require('openzeppelin-test-helpers');
  const { ZERO_ADDRESS } = constants;
  
  const { expect } = require('chai');
  
  function shouldBehaveLikeERC20Mintable (minter, [other]) {
    describe('as a mintable token', function () {
      describe('mint', function () {
        const amount = new BN(100);
  
        context('when the sender has minting permission', function () {
          const from = minter;
  
          context('for a zero amount', function () {
            shouldMint(new BN(0));
          });
  
          context('for a non-zero amount', function () {
            shouldMint(amount);
          });
  
          function shouldMint (amount) {
            beforeEach(async function () {
              ({ logs: this.logs } = await this.token.mint(other, amount, { from }));
            });
  
            it('mints the requested amount', async function () {
              expect(await this.token.balanceOf(other)).to.be.bignumber.equal(amount);
            });
  
            it('emits a mint and a transfer event', async function () {
              expectEvent.inLogs(this.logs, 'Transfer', {
                from: ZERO_ADDRESS,
                to: other,
                value: amount,
              });
            });
          }
        });
  
        context('when the sender doesn\'t have minting permission', function () {
          const from = other;
  
          it('reverts', async function () {
            await expectRevert(this.token.mint(other, amount, { from }),
              'MinterRole: caller does not have the Minter role'
            );
          });
        });
      });
    });
  }
  
  module.exports = {
    shouldBehaveLikeERC20Mintable,
  };
  