openzeppelin-contracts/test/proxy/Clones.behaviour.js

const { expectRevert } = require('@openzeppelin/test-helpers');

const { expect } = require('chai');

const DummyImplementation = artifacts.require('DummyImplementation');

module.exports = function shouldBehaveLikeClone (createClone) {
  before('deploy implementation', async function () {
    this.implementation = web3.utils.toChecksumAddress((await DummyImplementation.new()).address);
  });

  const assertProxyInitialization = function ({ value, balance }) {
    it('initializes the proxy', async function () {
      const dummy = new DummyImplementation(this.proxy);
      expect(await dummy.value()).to.be.bignumber.equal(value.toString());
    });

    it('has expected balance', async function () {
      expect(await web3.eth.getBalance(this.proxy)).to.be.bignumber.equal(balance.toString());
    });
  };

  describe('initialization without parameters', function () {
    describe('non payable', function () {
      const expectedInitializedValue = 10;
      const initializeData = new DummyImplementation('').contract.methods['initializeNonPayable()']().encodeABI();

      describe('when not sending balance', function () {
        beforeEach('creating proxy', async function () {
          this.proxy = (
            await createClone(this.implementation, initializeData)
          ).address;
        });

        assertProxyInitialization({
          value: expectedInitializedValue,
          balance: 0,
        });
      });

      describe('when sending some balance', function () {
        const value = 10e5;

        it('reverts', async function () {
          await expectRevert.unspecified(
            createClone(this.implementation, initializeData, { value }),
          );
        });
      });
    });

    describe('payable', function () {
      const expectedInitializedValue = 100;
      const initializeData = new DummyImplementation('').contract.methods['initializePayable()']().encodeABI();

      describe('when not sending balance', function () {
        beforeEach('creating proxy', async function () {
          this.proxy = (
            await createClone(this.implementation, initializeData)
          ).address;
        });

        assertProxyInitialization({
          value: expectedInitializedValue,
          balance: 0,
        });
      });

      describe('when sending some balance', function () {
        const value = 10e5;

        beforeEach('creating proxy', async function () {
          this.proxy = (
            await createClone(this.implementation, initializeData, { value })
          ).address;
        });

        assertProxyInitialization({
          value: expectedInitializedValue,
          balance: value,
        });
      });
    });
  });

  describe('initialization with parameters', function () {
    describe('non payable', function () {
      const expectedInitializedValue = 10;
      const initializeData = new DummyImplementation('').contract
        .methods.initializeNonPayableWithValue(expectedInitializedValue).encodeABI();

      describe('when not sending balance', function () {
        beforeEach('creating proxy', async function () {
          this.proxy = (
            await createClone(this.implementation, initializeData)
          ).address;
        });

        assertProxyInitialization({
          value: expectedInitializedValue,
          balance: 0,
        });
      });

      describe('when sending some balance', function () {
        const value = 10e5;

        it('reverts', async function () {
          await expectRevert.unspecified(
            createClone(this.implementation, initializeData, { value }),
          );
        });
      });
    });

    describe('payable', function () {
      const expectedInitializedValue = 42;
      const initializeData = new DummyImplementation('').contract
        .methods.initializePayableWithValue(expectedInitializedValue).encodeABI();

      describe('when not sending balance', function () {
        beforeEach('creating proxy', async function () {
          this.proxy = (
            await createClone(this.implementation, initializeData)
          ).address;
        });

        assertProxyInitialization({
          value: expectedInitializedValue,
          balance: 0,
        });
      });

      describe('when sending some balance', function () {
        const value = 10e5;

        beforeEach('creating proxy', async function () {
          this.proxy = (
            await createClone(this.implementation, initializeData, { value })
          ).address;
        });

        assertProxyInitialization({
          value: expectedInitializedValue,
          balance: value,
        });
      });
    });
  });
};