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-rw-r--r--packages/contracts/test/ts/zrxToken.ts168
1 files changed, 168 insertions, 0 deletions
diff --git a/packages/contracts/test/ts/zrxToken.ts b/packages/contracts/test/ts/zrxToken.ts
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+++ b/packages/contracts/test/ts/zrxToken.ts
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+import {ZeroEx} from '0x.js';
+import {BigNumber} from 'bignumber.js';
+import * as chai from 'chai';
+import Web3 = require('web3');
+
+import {Artifacts} from '../../util/artifacts';
+import {ContractInstance} from '../../util/types';
+
+import {chaiSetup} from './utils/chai_setup';
+
+chaiSetup.configure();
+const expect = chai.expect;
+const {Exchange, ZRXToken} = new Artifacts(artifacts);
+const web3: Web3 = (global as any).web3;
+
+contract('ZRXToken', (accounts: string[]) => {
+ const owner = accounts[0];
+ const spender = accounts[1];
+ let zeroEx: ZeroEx;
+
+ let MAX_UINT: BigNumber;
+
+ let zrx: ContractInstance;
+ let zrxAddress: string;
+
+ beforeEach(async () => {
+ zeroEx = new ZeroEx(web3.currentProvider, {
+ exchangeContractAddress: Exchange.address,
+ });
+ zrxAddress = await zeroEx.exchange.getZRXTokenAddressAsync();
+ zrx = await ZRXToken.at(zrxAddress);
+ MAX_UINT = zeroEx.token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
+ });
+
+ describe('constants', () => {
+ it('should have 18 decimals', async () => {
+ const decimals = new BigNumber(await zrx.decimals.call());
+ const expectedDecimals = 18;
+ expect(decimals).to.be.bignumber.equal(expectedDecimals);
+ });
+
+ it('should have a total supply of 1 billion tokens', async () => {
+ const totalSupply = new BigNumber(await zrx.totalSupply.call());
+ const expectedTotalSupply = 1000000000;
+ expect(ZeroEx.toUnitAmount(totalSupply, 18)).to.be.bignumber.equal(expectedTotalSupply);
+ });
+
+ it('should be named 0x Protocol Token', async () => {
+ const name = await zrx.name.call();
+ const expectedName = '0x Protocol Token';
+ expect(name).to.be.equal(expectedName);
+ });
+
+ it('should have the symbol ZRX', async () => {
+ const symbol = await zrx.symbol.call();
+ const expectedSymbol = 'ZRX';
+ expect(symbol).to.be.equal(expectedSymbol);
+ });
+ });
+
+ describe('constructor', () => {
+ it('should initialize owner balance to totalSupply', async () => {
+ const ownerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
+ const totalSupply = new BigNumber(await zrx.totalSupply.call());
+ expect(totalSupply).to.be.bignumber.equal(ownerBalance);
+ });
+ });
+
+ describe('transfer', () => {
+ it('should transfer balance from sender to receiver', async () => {
+ const receiver = spender;
+ const initOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
+ const amountToTransfer = new BigNumber(1);
+ const txHash = await zeroEx.token.transferAsync(zrxAddress, owner, receiver, amountToTransfer);
+ await zeroEx.awaitTransactionMinedAsync(txHash);
+ const finalOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
+ const finalReceiverBalance = await zeroEx.token.getBalanceAsync(zrxAddress, receiver);
+
+ const expectedFinalOwnerBalance = initOwnerBalance.minus(amountToTransfer);
+ const expectedFinalReceiverBalance = amountToTransfer;
+ expect(finalOwnerBalance).to.be.bignumber.equal(expectedFinalOwnerBalance);
+ expect(finalReceiverBalance).to.be.bignumber.equal(expectedFinalReceiverBalance);
+ });
+
+ it('should return true on a 0 value transfer', async () => {
+ const didReturnTrue = await zrx.transfer.call(spender, 0, {from: owner});
+ expect(didReturnTrue).to.be.true();
+ });
+ });
+
+ describe('transferFrom', () => {
+ it('should return false if owner has insufficient balance', async () => {
+ const ownerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
+ const amountToTransfer = ownerBalance.plus(1);
+ let txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, amountToTransfer);
+ await zeroEx.awaitTransactionMinedAsync(txHash);
+ const didReturnTrue = await zrx.transferFrom.call(owner, spender, amountToTransfer, {from: spender});
+ expect(didReturnTrue).to.be.false();
+ // Reset allowance
+ txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, new BigNumber(0));
+ await zeroEx.awaitTransactionMinedAsync(txHash);
+ });
+
+ it('should return false if spender has insufficient allowance', async () => {
+ const ownerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
+ const amountToTransfer = ownerBalance;
+
+ const spenderAllowance = await zeroEx.token.getAllowanceAsync(zrxAddress, owner, spender);
+ const spenderAllowanceIsInsufficient = spenderAllowance.cmp(amountToTransfer) < 0;
+ expect(spenderAllowanceIsInsufficient).to.be.true();
+
+ const didReturnTrue = await zrx.transferFrom.call(owner, spender, amountToTransfer, {from: spender});
+ expect(didReturnTrue).to.be.false();
+ });
+
+ it('should return true on a 0 value transfer', async () => {
+ const amountToTransfer = 0;
+ const didReturnTrue = await zrx.transferFrom.call(owner, spender, amountToTransfer, {from: spender});
+ expect(didReturnTrue).to.be.true();
+ });
+
+ it('should not modify spender allowance if spender allowance is 2^256 - 1', async () => {
+ const initOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
+ const amountToTransfer = initOwnerBalance;
+ const initSpenderAllowance = MAX_UINT;
+ let txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, initSpenderAllowance);
+ await zeroEx.awaitTransactionMinedAsync(txHash);
+ txHash = await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer);
+ await zeroEx.awaitTransactionMinedAsync(txHash);
+
+ const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(zrxAddress, owner, spender);
+ expect(initSpenderAllowance).to.be.bignumber.equal(newSpenderAllowance);
+ // Restore balance
+ txHash = await zeroEx.token.transferAsync(zrxAddress, spender, owner, amountToTransfer);
+ await zeroEx.awaitTransactionMinedAsync(txHash);
+ });
+
+ it('should transfer the correct balances if spender has sufficient allowance', async () => {
+ const initOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
+ const initSpenderBalance = await zeroEx.token.getBalanceAsync(zrxAddress, spender);
+ const amountToTransfer = initOwnerBalance;
+ const initSpenderAllowance = initOwnerBalance;
+ let txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, initSpenderAllowance);
+ await zeroEx.awaitTransactionMinedAsync(txHash);
+ txHash = await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer);
+ await zeroEx.awaitTransactionMinedAsync(txHash);
+
+ const newOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
+ const newSpenderBalance = await zeroEx.token.getBalanceAsync(zrxAddress, spender);
+
+ expect(newOwnerBalance).to.be.bignumber.equal(0);
+ expect(newSpenderBalance).to.be.bignumber.equal(initSpenderBalance.plus(initOwnerBalance));
+ });
+
+ it('should modify allowance if spender has sufficient allowance less than 2^256 - 1', async () => {
+ const initOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
+ const amountToTransfer = initOwnerBalance;
+ const initSpenderAllowance = initOwnerBalance;
+ let txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, initSpenderAllowance);
+ await zeroEx.awaitTransactionMinedAsync(txHash);
+ txHash = await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer);
+ await zeroEx.awaitTransactionMinedAsync(txHash);
+
+ const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(zrxAddress, owner, spender);
+ expect(newSpenderAllowance).to.be.bignumber.equal(0);
+ });
+ });
+});