Merge pull request #6 from status-im/nft-support

NFT support
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Andrea Franz 2020-04-16 12:27:16 +02:00 committed by GitHub
commit 3dfa0a7fb7
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8 changed files with 740 additions and 16 deletions

174
contracts/NFTBucket.sol Normal file
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@ -0,0 +1,174 @@
pragma solidity ^0.6.1;
pragma experimental ABIEncoderV2;
import "./erc721/IERC721.sol";
import "./erc721/IERC721Receiver.sol";
import "./erc721/IERC165.sol";
contract NFTBucket is IERC165, IERC721Receiver {
bool initialized;
address payable public owner;
IERC721 public tokenContract;
uint256 public expirationTime;
uint256 constant maxTxDelayInBlocks = 10;
struct Gift {
address recipient;
uint256 tokenID;
bytes32 code;
}
mapping(address => Gift) public gifts;
struct Redeem {
uint256 blockNumber;
bytes32 blockHash;
address receiver;
bytes32 code;
}
bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; //bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))
bytes32 constant EIP712DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");
bytes32 constant REDEEM_TYPEHASH = keccak256("Redeem(uint256 blockNumber,bytes32 blockHash,address receiver,bytes32 code)");
bytes32 DOMAIN_SEPARATOR;
modifier onlyOwner() {
require(msg.sender == owner, "owner required");
_;
}
constructor(address _tokenAddress, uint256 _expirationTime) public {
initialize(_tokenAddress, _expirationTime, msg.sender);
}
function initialize(address _tokenAddress, uint256 _expirationTime, address _owner) public {
require(initialized == false, "already initialized");
require(_expirationTime > block.timestamp, "expiration can't be in the past");
tokenContract = IERC721(_tokenAddress);
expirationTime = _expirationTime;
owner = payable(_owner);
DOMAIN_SEPARATOR = keccak256(abi.encode(
EIP712DOMAIN_TYPEHASH,
keccak256("KeycardNFTGift"),
keccak256("1"),
_getChainID(),
address(this)
));
initialized = true;
}
function _getChainID() internal pure returns (uint256) {
uint256 id;
assembly {
id := chainid()
}
return id;
}
function redeem(Redeem calldata _redeem, bytes calldata sig) external {
require(_redeem.blockNumber < block.number, "transaction cannot be in the future");
require(_redeem.blockNumber >= (block.number - maxTxDelayInBlocks), "transaction too old");
require(_redeem.blockHash == blockhash(_redeem.blockNumber), "invalid block hash");
require(block.timestamp < expirationTime, "expired gift");
address recipient = recoverSigner(_redeem, sig);
Gift storage gift = gifts[recipient];
require(gift.recipient == recipient, "not found");
bytes32 codeHash = keccak256(abi.encodePacked(_redeem.code));
require(codeHash == gift.code, "invalid code");
tokenContract.safeTransferFrom(address(this), _redeem.receiver, gift.tokenID);
}
function kill() external onlyOwner {
require(block.timestamp >= expirationTime, "not expired yet");
tokenContract.setApprovalForAll(owner, true);
assert(tokenContract.isApprovedForAll(address(this), owner));
selfdestruct(owner);
}
function hashRedeem(Redeem memory _redeem) internal pure returns (bytes32) {
return keccak256(abi.encode(
REDEEM_TYPEHASH,
_redeem.blockNumber,
_redeem.blockHash,
_redeem.receiver,
_redeem.code
));
}
function recoverSigner(Redeem memory _redeem, bytes memory sig) internal view returns(address) {
require(sig.length == 65, "bad signature length");
bytes32 r;
bytes32 s;
uint8 v;
assembly {
r := mload(add(sig, 32))
s := mload(add(sig, 64))
v := byte(0, mload(add(sig, 96)))
}
if (v < 27) {
v += 27;
}
require(v == 27 || v == 28, "signature version doesn't match");
bytes32 digest = keccak256(abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
hashRedeem(_redeem)
));
return ecrecover(digest, v, r, s);
}
function supportsInterface(bytes4 interfaceID) external override(IERC165) view returns (bool) {
return interfaceID == _ERC721_RECEIVED;
}
function onERC721Received(address _operator, address _from, uint256 _tokenID, bytes calldata _data) external override(IERC721Receiver) returns(bytes4) {
require(msg.sender == address(tokenContract), "only the NFT contract can call this");
require((_operator == owner) || (_from == owner), "only the owner can create gifts");
require(_data.length == 52, "invalid data field");
bytes memory d = _data;
bytes32 tmp;
bytes32 code;
assembly {
// tmp is 12 bytes of padding (taken from the array length) + 20 bytes of address
tmp := mload(add(d, 20))
code := mload(add(d, 52))
}
address recipient = address(uint160(uint256(tmp)));
Gift storage gift = gifts[recipient];
require(gift.recipient == address(0), "recipient already used");
gift.recipient = recipient;
gift.tokenID = _tokenID;
gift.code = code;
return _ERC721_RECEIVED;
}
}

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@ -0,0 +1,20 @@
pragma solidity ^0.6.1;
import "./NFTBucket.sol";
import "./Proxy.sol";
contract NFTBucketFactory {
NFTBucket public NFTBucketImplementation;
event BucketCreated(address indexed gifter, address indexed bucket);
constructor() public {
NFTBucketImplementation = new NFTBucket(address(0), block.timestamp + 1);
}
function create(address _tokenAddress, uint256 _expirationTime) public returns (address) {
address p = address(new Proxy(abi.encodeWithSelector(0xc350a1b5, _tokenAddress, _expirationTime, msg.sender), address(NFTBucketImplementation)));
emit BucketCreated(msg.sender, p);
return p;
}
}

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@ -0,0 +1,5 @@
pragma solidity ^0.6.1;
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

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@ -0,0 +1,25 @@
pragma solidity ^0.6.1;
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 {
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function balanceOf(address owner) external view returns (uint256 balance);
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(address from, address to, uint256 tokenId) external;
function transferFrom(address from, address to, uint256 tokenId) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId) external view returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator) external view returns (bool);
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}

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@ -0,0 +1,5 @@
pragma solidity ^0.6.1;
interface IERC721Receiver {
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}

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@ -0,0 +1,137 @@
pragma solidity ^0.6.1;
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./IERC165.sol";
contract TestNFT is IERC165, IERC721 {
bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;
mapping (uint256 => address) private _tokenOwner;
mapping (uint256 => address) private _tokenApprovals;
mapping (address => uint256) private _ownedTokensCount;
mapping (address => mapping (address => bool)) private _operatorApprovals;
bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;
function balanceOf(address owner) public override(IERC721) view returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _ownedTokensCount[owner];
}
function ownerOf(uint256 tokenId) public override(IERC721) view returns (address) {
address owner = _tokenOwner[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
function approve(address to, uint256 tokenId) public override(IERC721) {
address owner = ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(msg.sender == owner || isApprovedForAll(owner, msg.sender),
"ERC721: approve caller is not owner nor approved for all"
);
_tokenApprovals[tokenId] = to;
emit Approval(owner, to, tokenId);
}
function getApproved(uint256 tokenId) public override(IERC721) view returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
function setApprovalForAll(address to, bool approved) public override(IERC721) {
require(to != msg.sender, "ERC721: approve to caller");
_operatorApprovals[msg.sender][to] = approved;
emit ApprovalForAll(msg.sender, to, approved);
}
function isApprovedForAll(address owner, address operator) public override(IERC721) view returns (bool) {
return _operatorApprovals[owner][operator];
}
function transferFrom(address from, address to, uint256 tokenId) public override(IERC721) {
require(_isApprovedOrOwner(msg.sender, tokenId), "ERC721: transfer caller is not owner nor approved");
_transferFrom(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId) public override(IERC721) {
safeTransferFrom(from, to, tokenId, "");
}
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public override(IERC721) {
transferFrom(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view returns (bool) {
address owner = _tokenOwner[tokenId];
return owner != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function mint(address to, uint256 tokenId) public returns (bool) {
return mint(to, tokenId, "");
}
function mint(address to, uint256 tokenId, bytes memory _data) public returns (bool) {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_tokenOwner[tokenId] = to;
_ownedTokensCount[to]++;
emit Transfer(address(0), to, tokenId);
require(_checkOnERC721Received(msg.sender, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _transferFrom(address from, address to, uint256 tokenId) internal {
require(ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_clearApproval(tokenId);
_ownedTokensCount[from]--;
_ownedTokensCount[to]++;
_tokenOwner[tokenId] = to;
emit Transfer(from, to, tokenId);
}
function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) internal returns (bool) {
if (!isContract(to)) {
return true;
}
bytes4 retval = IERC721Receiver(to).onERC721Received(msg.sender, from, tokenId, _data);
return (retval == _ERC721_RECEIVED);
}
function _clearApproval(uint256 tokenId) private {
if (_tokenApprovals[tokenId] != address(0)) {
_tokenApprovals[tokenId] = address(0);
}
}
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly { size := extcodesize(account) }
return size > 0;
}
function supportsInterface(bytes4 interfaceID) external override(IERC165) view returns (bool) {
return interfaceID == _INTERFACE_ID_ERC721;
}
}

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@ -4,15 +4,19 @@ import Web3 from 'web3';
import parseArgs from 'minimist';
import fs from 'fs';
const argv = parseArgs(process.argv.slice(2), {boolean: ["deploy-factory", "deploy-bucket"], string: ["sender", "factory", "bucket", "token"], default: {"endpoint": "ws://127.0.0.1:8546", "validity-days": 365}});
const argv = parseArgs(process.argv.slice(2), {boolean: ["nft", "deploy-factory", "deploy-bucket"], string: ["sender", "factory", "bucket", "token"], default: {"endpoint": "ws://127.0.0.1:8546", "validity-days": 365}});
const web3 = new Web3(argv["endpoint"]);
const GiftBucketConfig = loadEmbarkArtifact('./embarkArtifacts/contracts/GiftBucket.js');
const GiftBucketFactoryConfig = loadEmbarkArtifact('./embarkArtifacts/contracts/GiftBucketFactory.js');
const classPrefix = argv["nft"] ? "NFT" : "Gift";
const GiftBucketFactory = new web3.eth.Contract(GiftBucketFactoryConfig["abiDefinition"]);
const GiftBucket = new web3.eth.Contract(GiftBucketConfig["abiDefinition"]);
const BucketConfig = loadEmbarkArtifact(`./embarkArtifacts/contracts/${classPrefix}Bucket.js`);
const BucketFactoryConfig = loadEmbarkArtifact(`./embarkArtifacts/contracts/${classPrefix}BucketFactory.js`);
const IERC721 = loadEmbarkArtifact(`./embarkArtifacts/contracts/IERC721.js`);
const BucketFactory = new web3.eth.Contract(BucketFactoryConfig["abiDefinition"]);
const Bucket = new web3.eth.Contract(BucketConfig["abiDefinition"]);
const ERC721 = new web3.eth.Contract(IERC721["abiDefinition"]);
function loadEmbarkArtifact(path) {
let file = fs.readFileSync(path, "utf-8");
@ -49,8 +53,8 @@ async function sendMethod(methodCall, sender, to) {
}
async function deployFactory(sender) {
let code = "0x" + GiftBucketFactoryConfig["code"];
let methodCall = GiftBucketFactory.deploy({data: code});
let code = "0x" + BucketFactoryConfig["code"];
let methodCall = BucketFactory.deploy({data: code});
let receipt = await sendMethod(methodCall, sender, null);
return receipt.contractAddress;
}
@ -59,11 +63,11 @@ async function deployBucket(sender, factory, token, validityInDays) {
let now = Math.round(new Date().getTime() / 1000);
let expirationDate = now + (60 * 60 * 24 * validityInDays);
GiftBucketFactory.options.address = factory;
let methodCall = GiftBucketFactory.methods.create(token.toLowerCase(), expirationDate);
BucketFactory.options.address = factory;
let methodCall = BucketFactory.methods.create(token.toLowerCase(), expirationDate);
try {
let receipt = await sendMethod(methodCall, sender, GiftBucketFactory.options.address);
let receipt = await sendMethod(methodCall, sender, BucketFactory.options.address);
return receipt.events.BucketCreated.returnValues.bucket;
} catch(err) {
console.error(err);
@ -72,11 +76,38 @@ async function deployBucket(sender, factory, token, validityInDays) {
}
async function createGift(sender, bucket, keycard) {
GiftBucket.options.address = bucket;
let methodCall = GiftBucket.methods.createGift(keycard.keycard, keycard.amount, keycard.code);
Bucket.options.address = bucket;
let methodCall = Bucket.methods.createGift(keycard.keycard, keycard.amount, keycard.code);
try {
let receipt = await sendMethod(methodCall, sender, GiftBucket.options.address);
let receipt = await sendMethod(methodCall, sender, Bucket.options.address);
return receipt;
} catch(err) {
console.error(err);
return null;
}
}
function createNFTData(keycard, code) {
return keycard.toLowerCase() + code.replace("0x", "");
}
function senderAddress(sender) {
if (typeof(sender) == "string") {
return sender;
} else {
return sender.address;
}
}
async function transferNFT(sender, token, bucket, keycard) {
Bucket.options.address = bucket;
ERC721.options.address = token ? token : await Bucket.methods.tokenContract().call();
let methodCall = ERC721.methods.safeTransferFrom(senderAddress(sender), bucket, keycard.amount, createNFTData(keycard.keycard, keycard.code));
try {
let receipt = await sendMethod(methodCall, sender, ERC721.options.address);
return receipt;
} catch(err) {
console.error(err);
@ -90,8 +121,9 @@ function processLine(line) {
}
async function run() {
GiftBucketFactory.transactionConfirmationBlocks = 3;
GiftBucket.transactionConfirmationBlocks = 3;
BucketFactory.transactionConfirmationBlocks = 3;
Bucket.transactionConfirmationBlocks = 3;
ERC721.transactionConfirmationBlocks = 3;
let sender;
let hasDoneSomething = false;
@ -152,7 +184,7 @@ async function run() {
let file = fs.readFileSync(argv["file"], 'utf8');
keycards = file.split("\n").map(processLine);
for (let keycard of keycards) {
await createGift(sender, bucket, keycard)
await argv["nft"] ? createGift(sender, bucket, keycard) : transferNFT(sender, argv["token"], bucket, keycard);
}
} else if (!hasDoneSomething) {
console.error("the --file option must be specified");

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test/nft_contract_spec.js Normal file
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@ -0,0 +1,326 @@
const EmbarkJS = artifacts.require('EmbarkJS');
const TestNFT = artifacts.require('TestNFT');
const _NFTBucket = artifacts.require('NFTBucket');
const NFTBucketFactory = artifacts.require('NFTBucketFactory');
const TOTAL_SUPPLY = 10000;
const GIFT_AMOUNT = 10;
const REDEEM_CODE = web3.utils.sha3("hello world");
const NOW = Math.round(new Date().getTime() / 1000);
const EXPIRATION_TIME = NOW + 60 * 60 * 24; // in 24 hours
const NEW_EXPIRATION_TIME = EXPIRATION_TIME + 60;
let shop,
user,
relayer,
keycard_1,
keycard_2;
config({
contracts: {
deploy: {
"TestNFT": {
args: [],
},
"NFTBucket": {
args: ["$TestNFT", EXPIRATION_TIME],
},
"NFTBucketFactory": {
args: [],
},
}
},
}, (_err, _accounts) => {
shop = _accounts[0];
user = _accounts[1];
relayer = _accounts[2];
keycard_1 = _accounts[3];
keycard_2 = _accounts[4];
keycard_3 = _accounts[5];
});
let sendMethod;
async function signRedeem(contractAddress, signer, message) {
const result = await web3.eth.net.getId();
let chainId = parseInt(result);
//FIXME: in tests, getChainID in the contract returns 1 so we hardcode it here to 1.
chainId = 1;
const domain = [
{ name: "name", type: "string" },
{ name: "version", type: "string" },
{ name: "chainId", type: "uint256" },
{ name: "verifyingContract", type: "address" }
];
const redeem = [
{ name: "blockNumber", type: "uint256" },
{ name: "blockHash", type: "bytes32" },
{ name: "receiver", type: "address" },
{ name: "code", type: "bytes32" },
];
const domainData = {
name: "KeycardNFTGift",
version: "1",
chainId: chainId,
verifyingContract: contractAddress
};
const data = {
types: {
EIP712Domain: domain,
Redeem: redeem,
},
primaryType: "Redeem",
domain: domainData,
message: message
};
return new Promise((resolve, reject) => {
sendMethod({
jsonrpc: '2.0',
id: Date.now().toString().substring(9),
method: "eth_signTypedData",
params: [signer, data],
from: signer
}, (error, res) => {
if (error) {
return reject(error);
}
resolve(res.result);
});
});
}
function mineAt(timestamp) {
return new Promise((resolve, reject) => {
sendMethod({
jsonrpc: '2.0',
method: "evm_mine",
params: [timestamp],
id: Date.now().toString().substring(9)
}, (error, res) => {
if (error) {
return reject(error);
}
resolve(res.result);
});
});
}
if (assert.match === undefined) {
assert.match = (message, pattern) => {
assert(pattern.test(message), `${message} doesn't match ${pattern}`);
}
}
contract("NFTBucket", function () {
let NFTBucket;
sendMethod = (web3.currentProvider.sendAsync) ? web3.currentProvider.sendAsync.bind(web3.currentProvider) : web3.currentProvider.send.bind(web3.currentProvider);
it("deploy factory", async () => {
// only to test gas
const deploy = NFTBucketFactory.deploy({
arguments: []
});
const gas = await deploy.estimateGas();
await deploy.send({ gas })
});
it("deploy bucket", async () => {
// only to test gas
const deploy = _NFTBucket.deploy({
arguments: [TestNFT._address, EXPIRATION_TIME]
});
const gas = await deploy.estimateGas();
await deploy.send({ gas })
});
it("deploy bucket via factory", async () => {
const create = NFTBucketFactory.methods.create(TestNFT._address, EXPIRATION_TIME);
const gas = await create.estimateGas();
const receipt = await create.send({
from: shop,
gas: gas,
});
const bucketAddress = receipt.events.BucketCreated.returnValues.bucket;
const jsonInterface = _NFTBucket.options.jsonInterface;
NFTBucket = new EmbarkJS.Blockchain.Contract({
abi: jsonInterface,
address: bucketAddress,
});
});
function createGiftData(recipient) {
const redeemCodeHash = web3.utils.sha3(REDEEM_CODE);
return recipient + redeemCodeHash.replace("0x", "");
}
async function checkGift(recipient, tokenID) {
let gift = await NFTBucket.methods.gifts(recipient).call();
assert.equal(gift.recipient, recipient, "gift not found");
assert.equal(parseInt(gift.tokenID), tokenID, "token ID does not match");
let tokenOwner = await TestNFT.methods.ownerOf(tokenID).call();
assert.equal(tokenOwner, NFTBucket._address, "token owner is wrong");
}
it("mint directly to gift", async function () {
await TestNFT.methods.mint(NFTBucket._address, 42, createGiftData(keycard_1)).send({
from: shop,
});
await checkGift(keycard_1, 42);
});
it("transfer token from shop", async function() {
await TestNFT.methods.mint(shop, 0xcafe).send({from: shop,});
await TestNFT.methods.safeTransferFrom(shop, NFTBucket._address, 0xcafe, createGiftData(keycard_2)).send({from: shop});
await checkGift(keycard_2, 0xcafe);
});
it("cannot create two gifts for the same recipient", async function() {
await TestNFT.methods.mint(shop, 43).send({from: shop});
try {
await TestNFT.methods.safeTransferFrom(shop, NFTBucket._address, 43, createGiftData(keycard_2)).send({from: shop});
assert.fail("transfer should have failed");
} catch(e) {
assert.match(e.message, /already used/);
}
});
it("cannot create two gifts for the same token", async function() {
try {
await NFTBucket.methods.onERC721Received(shop, shop, 0xcafe, createGiftData(keycard_3)).send({from: shop});
assert.fail("transfer should have failed");
} catch(e) {
assert.match(e.message, /only the NFT/);
}
});
async function testRedeem(receiver, recipient, signer, relayer, redeemCode, blockNumber, blockHash) {
let gift = await NFTBucket.methods.gifts(recipient).call();
const tokenID = gift.tokenID;
const message = {
blockNumber: blockNumber,
blockHash: blockHash,
receiver: receiver,
code: redeemCode,
};
const sig = await signRedeem(NFTBucket._address, signer, message);
const redeem = NFTBucket.methods.redeem(message, sig);
const redeemGas = await redeem.estimateGas();
await redeem.send({
from: relayer,
gas: redeemGas,
});
let tokenOwner = await TestNFT.methods.ownerOf(tokenID).call();
assert.equal(tokenOwner, receiver, `Token owner is ${tokenOwner} instead of the expected ${receiver}`);
}
it("cannot redeem after expiration date", async function() {
const block = await web3.eth.getBlock("latest");
await mineAt(EXPIRATION_TIME);
try {
await testRedeem(user, keycard_1, keycard_1, relayer, REDEEM_CODE, block.number, block.hash);
assert.fail("redeem should have failed");
} catch(e) {
assert.match(e.message, /expired/);
}
});
it("cannot redeem with invalid code", async function() {
const block = await web3.eth.getBlock("latest");
await mineAt(NOW);
try {
await testRedeem(user, keycard_1, keycard_1, relayer, web3.utils.sha3("bad-code"), block.number, block.hash);
assert.fail("redeem should have failed");
} catch(e) {
assert.match(e.message, /invalid code/);
}
});
it("cannot redeem with invalid recipient", async function() {
const block = await web3.eth.getBlock("latest");
await mineAt(NOW);
try {
await testRedeem(user, keycard_1, keycard_3, relayer, REDEEM_CODE, block.number, block.hash);
assert.fail("redeem should have failed");
} catch(e) {
assert.match(e.message, /not found/);
}
});
it("cannot redeem with a block in the future", async function() {
const block = await web3.eth.getBlock("latest");
await mineAt(NOW);
try {
await testRedeem(user, keycard_1, keycard_1, relayer, REDEEM_CODE, (block.number + 2), "0x0000000000000000000000000000000000000000000000000000000000000000");
} catch (e) {
assert.match(e.message, /future/);
}
});
it("cannot redeem with an old block", async function() {
const currentBlock = await web3.eth.getBlock("latest");
const block = await web3.eth.getBlock(currentBlock.number - 10);
await mineAt(NOW);
try {
await testRedeem(user, keycard_1, keycard_1, relayer, REDEEM_CODE, block.number, block.hash);
} catch (e) {
assert.match(e.message, /too old/);
}
});
it("cannot redeem with an invalid hash", async function() {
const block = await web3.eth.getBlock("latest");
await mineAt(NOW);
try {
await testRedeem(user, keycard_1, keycard_1, relayer, REDEEM_CODE, block.number, "0x0000000000000000000000000000000000000000000000000000000000000000");
} catch (e) {
assert.match(e.message, /invalid block hash/);
}
});
it("can redeem before expiration date", async function() {
const block = await web3.eth.getBlock("latest");
await mineAt(NOW);
await testRedeem(user, keycard_1, keycard_1, relayer, REDEEM_CODE, block.number, block.hash);
});
async function testKill() {
assert(!await TestNFT.methods.isApprovedForAll(NFTBucket._address, shop).call(), `${shop} should not be the operator of bucket's tokens`);
await NFTBucket.methods.kill().send({from: shop});
assert(await TestNFT.methods.isApprovedForAll(NFTBucket._address, shop).call(), `${shop} should become the operator of the destroyed bucket's tokens`);
}
it("shop cannot kill contract before expirationTime", async function() {
await mineAt(NOW);
try {
await testKill();
assert.fail("redeem should have failed");
} catch(e) {
assert.match(e.message, /not expired yet/);
}
});
it("shop can kill contract after expirationTime", async function() {
await mineAt(EXPIRATION_TIME);
await testKill();
});
});