const { balance, constants, ether, expectRevert, send, expectEvent } = require('@openzeppelin/test-helpers');
const { expect } = require('chai');
const Address = artifacts.require('$Address');
const EtherReceiver = artifacts.require('EtherReceiverMock');
const CallReceiverMock = artifacts.require('CallReceiverMock');
contract('Address', function (accounts) {
const [recipient, other] = accounts;
beforeEach(async function () {
this.mock = await Address.new();
});
describe('isContract', function () {
it('returns false for account address', async function () {
expect(await this.mock.$isContract(other)).to.equal(false);
});
it('returns true for contract address', async function () {
expect(await this.mock.$isContract(this.mock.address)).to.equal(true);
});
});
describe('sendValue', function () {
beforeEach(async function () {
this.recipientTracker = await balance.tracker(recipient);
});
context('when sender contract has no funds', function () {
it('sends 0 wei', async function () {
await this.mock.$sendValue(other, 0);
expect(await this.recipientTracker.delta()).to.be.bignumber.equal('0');
});
it('reverts when sending non-zero amounts', async function () {
await expectRevert(this.mock.$sendValue(other, 1), 'Address: insufficient balance');
});
});
context('when sender contract has funds', function () {
const funds = ether('1');
beforeEach(async function () {
await send.ether(other, this.mock.address, funds);
});
it('sends 0 wei', async function () {
await this.mock.$sendValue(recipient, 0);
expect(await this.recipientTracker.delta()).to.be.bignumber.equal('0');
});
it('sends non-zero amounts', async function () {
await this.mock.$sendValue(recipient, funds.subn(1));
expect(await this.recipientTracker.delta()).to.be.bignumber.equal(funds.subn(1));
});
it('sends the whole balance', async function () {
await this.mock.$sendValue(recipient, funds);
expect(await this.recipientTracker.delta()).to.be.bignumber.equal(funds);
expect(await balance.current(this.mock.address)).to.be.bignumber.equal('0');
});
it('reverts when sending more than the balance', async function () {
await expectRevert(this.mock.$sendValue(recipient, funds.addn(1)), 'Address: insufficient balance');
});
context('with contract recipient', function () {
beforeEach(async function () {
this.target = await EtherReceiver.new();
});
it('sends funds', async function () {
const tracker = await balance.tracker(this.target.address);
await this.target.setAcceptEther(true);
await this.mock.$sendValue(this.target.address, funds);
expect(await tracker.delta()).to.be.bignumber.equal(funds);
});
it('reverts on recipient revert', async function () {
await this.target.setAcceptEther(false);
await expectRevert(
this.mock.$sendValue(this.target.address, funds),
'Address: unable to send value, recipient may have reverted',
);
});
});
});
});
describe('functionCall', function () {
beforeEach(async function () {
this.target = await CallReceiverMock.new();
});
context('with valid contract receiver', function () {
it('calls the requested function', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunction().encodeABI();
const receipt = await this.mock.$functionCall(this.target.address, abiEncodedCall);
expectEvent(receipt, 'return$functionCall_address_bytes', {
ret0: web3.eth.abi.encodeParameters(['string'], ['0x1234']),
});
await expectEvent.inTransaction(receipt.tx, CallReceiverMock, 'MockFunctionCalled');
});
it('calls the requested empty return function', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunctionEmptyReturn().encodeABI();
const receipt = await this.mock.$functionCall(this.target.address, abiEncodedCall);
await expectEvent.inTransaction(receipt.tx, CallReceiverMock, 'MockFunctionCalled');
});
it('reverts when the called function reverts with no reason', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunctionRevertsNoReason().encodeABI();
await expectRevert(
this.mock.$functionCall(this.target.address, abiEncodedCall),
'Address: low-level call failed',
);
});
it('reverts when the called function reverts, bubbling up the revert reason', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunctionRevertsReason().encodeABI();
await expectRevert(this.mock.$functionCall(this.target.address, abiEncodedCall), 'CallReceiverMock: reverting');
});
it('reverts when the called function runs out of gas', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunctionOutOfGas().encodeABI();
await expectRevert(
this.mock.$functionCall(this.target.address, abiEncodedCall, { gas: '120000' }),
'Address: low-level call failed',
);
});
it('reverts when the called function throws', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunctionThrows().encodeABI();
await expectRevert.unspecified(this.mock.$functionCall(this.target.address, abiEncodedCall));
});
it('bubbles up error message if specified', async function () {
const errorMsg = 'Address: expected error';
await expectRevert(this.mock.$functionCall(this.target.address, '0x12345678', errorMsg), errorMsg);
});
it('reverts when function does not exist', async function () {
const abiEncodedCall = web3.eth.abi.encodeFunctionCall(
{
name: 'mockFunctionDoesNotExist',
type: 'function',
inputs: [],
},
[],
);
await expectRevert(
this.mock.$functionCall(this.target.address, abiEncodedCall),
'Address: low-level call failed',
);
});
});
context('with non-contract receiver', function () {
it('reverts when address is not a contract', async function () {
const [recipient] = accounts;
const abiEncodedCall = this.target.contract.methods.mockFunction().encodeABI();
await expectRevert(this.mock.$functionCall(recipient, abiEncodedCall), 'Address: call to non-contract');
});
});
});
describe('functionCallWithValue', function () {
beforeEach(async function () {
this.target = await CallReceiverMock.new();
});
context('with zero value', function () {
it('calls the requested function', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunction().encodeABI();
const receipt = await this.mock.$functionCallWithValue(this.target.address, abiEncodedCall, 0);
expectEvent(receipt, 'return$functionCallWithValue_address_bytes_uint256', {
ret0: web3.eth.abi.encodeParameters(['string'], ['0x1234']),
});
await expectEvent.inTransaction(receipt.tx, CallReceiverMock, 'MockFunctionCalled');
});
});
context('with non-zero value', function () {
const amount = ether('1.2');
it('reverts if insufficient sender balance', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunction().encodeABI();
await expectRevert(
this.mock.$functionCallWithValue(this.target.address, abiEncodedCall, amount),
'Address: insufficient balance for call',
);
});
it('calls the requested function with existing value', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunction().encodeABI();
const tracker = await balance.tracker(this.target.address);
await send.ether(other, this.mock.address, amount);
const receipt = await this.mock.$functionCallWithValue(this.target.address, abiEncodedCall, amount);
expectEvent(receipt, 'return$functionCallWithValue_address_bytes_uint256', {
ret0: web3.eth.abi.encodeParameters(['string'], ['0x1234']),
});
await expectEvent.inTransaction(receipt.tx, CallReceiverMock, 'MockFunctionCalled');
expect(await tracker.delta()).to.be.bignumber.equal(amount);
});
it('calls the requested function with transaction funds', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunction().encodeABI();
const tracker = await balance.tracker(this.target.address);
expect(await balance.current(this.mock.address)).to.be.bignumber.equal('0');
const receipt = await this.mock.$functionCallWithValue(this.target.address, abiEncodedCall, amount, {
from: other,
value: amount,
});
expectEvent(receipt, 'return$functionCallWithValue_address_bytes_uint256', {
ret0: web3.eth.abi.encodeParameters(['string'], ['0x1234']),
});
await expectEvent.inTransaction(receipt.tx, CallReceiverMock, 'MockFunctionCalled');
expect(await tracker.delta()).to.be.bignumber.equal(amount);
});
it('reverts when calling non-payable functions', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunctionNonPayable().encodeABI();
await send.ether(other, this.mock.address, amount);
await expectRevert(
this.mock.$functionCallWithValue(this.target.address, abiEncodedCall, amount),
'Address: low-level call with value failed',
);
});
it('bubbles up error message if specified', async function () {
const errorMsg = 'Address: expected error';
await expectRevert(this.mock.$functionCallWithValue(this.target.address, '0x12345678', 0, errorMsg), errorMsg);
});
});
});
describe('functionStaticCall', function () {
beforeEach(async function () {
this.target = await CallReceiverMock.new();
});
it('calls the requested function', async function () {
const abiEncodedCall = this.target.contract.methods.mockStaticFunction().encodeABI();
expect(await this.mock.$functionStaticCall(this.target.address, abiEncodedCall)).to.be.equal(
web3.eth.abi.encodeParameters(['string'], ['0x1234']),
);
});
it('reverts on a non-static function', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunction().encodeABI();
await expectRevert(
this.mock.$functionStaticCall(this.target.address, abiEncodedCall),
'Address: low-level static call failed',
);
});
it('bubbles up revert reason', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunctionRevertsReason().encodeABI();
await expectRevert(
this.mock.$functionStaticCall(this.target.address, abiEncodedCall),
'CallReceiverMock: reverting',
);
});
it('reverts when address is not a contract', async function () {
const [recipient] = accounts;
const abiEncodedCall = this.target.contract.methods.mockFunction().encodeABI();
await expectRevert(this.mock.$functionStaticCall(recipient, abiEncodedCall), 'Address: call to non-contract');
});
it('bubbles up error message if specified', async function () {
const errorMsg = 'Address: expected error';
await expectRevert(this.mock.$functionCallWithValue(this.target.address, '0x12345678', 0, errorMsg), errorMsg);
});
});
describe('functionDelegateCall', function () {
beforeEach(async function () {
this.target = await CallReceiverMock.new();
});
it('delegate calls the requested function', async function () {
const slot = '0x93e4c53af435ddf777c3de84bb9a953a777788500e229a468ea1036496ab66a0';
const value = '0x6a465d1c49869f71fb65562bcbd7e08c8044074927f0297127203f2a9924ff5b';
const abiEncodedCall = this.target.contract.methods.mockFunctionWritesStorage(slot, value).encodeABI();
expect(await web3.eth.getStorageAt(this.mock.address, slot)).to.be.equal(constants.ZERO_BYTES32);
expectEvent(
await this.mock.$functionDelegateCall(this.target.address, abiEncodedCall),
'return$functionDelegateCall_address_bytes',
{ ret0: web3.eth.abi.encodeParameters(['string'], ['0x1234']) },
);
expect(await web3.eth.getStorageAt(this.mock.address, slot)).to.be.equal(value);
});
it('bubbles up revert reason', async function () {
const abiEncodedCall = this.target.contract.methods.mockFunctionRevertsReason().encodeABI();
await expectRevert(
this.mock.$functionDelegateCall(this.target.address, abiEncodedCall),
'CallReceiverMock: reverting',
);
});
it('reverts when address is not a contract', async function () {
const [recipient] = accounts;
const abiEncodedCall = this.target.contract.methods.mockFunction().encodeABI();
await expectRevert(this.mock.$functionDelegateCall(recipient, abiEncodedCall), 'Address: call to non-contract');
});
it('bubbles up error message if specified', async function () {
const errorMsg = 'Address: expected error';
await expectRevert(this.mock.$functionCallWithValue(this.target.address, '0x12345678', 0, errorMsg), errorMsg);
});
});
describe('verifyCallResult', function () {
it('returns returndata on success', async function () {
const returndata = '0x123abc';
expect(await this.mock.$verifyCallResult(true, returndata, '')).to.equal(returndata);
});
it('reverts with return data and error m', async function () {
const errorMsg = 'Address: expected error';
await expectRevert(this.mock.$verifyCallResult(false, '0x', errorMsg), errorMsg);
});
});
});