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-rw-r--r--contracts/tokens/test/zrx_token.ts203
1 files changed, 203 insertions, 0 deletions
diff --git a/contracts/tokens/test/zrx_token.ts b/contracts/tokens/test/zrx_token.ts
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+++ b/contracts/tokens/test/zrx_token.ts
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+import { chaiSetup, constants, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
+import { BlockchainLifecycle } from '@0x/dev-utils';
+import { BigNumber } from '@0x/utils';
+import { Web3Wrapper } from '@0x/web3-wrapper';
+import * as chai from 'chai';
+
+import { artifacts, ZRXTokenContract } from '../src';
+
+chaiSetup.configure();
+const expect = chai.expect;
+const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
+
+describe('ZRXToken', () => {
+ let owner: string;
+ let spender: string;
+ let MAX_UINT: BigNumber;
+ let zrxToken: ZRXTokenContract;
+
+ before(async () => {
+ await blockchainLifecycle.startAsync();
+ });
+ after(async () => {
+ await blockchainLifecycle.revertAsync();
+ });
+ before(async () => {
+ const accounts = await web3Wrapper.getAvailableAddressesAsync();
+ owner = accounts[0];
+ spender = accounts[1];
+ zrxToken = await ZRXTokenContract.deployFrom0xArtifactAsync(artifacts.ZRXToken, provider, txDefaults);
+ MAX_UINT = constants.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
+ });
+ beforeEach(async () => {
+ await blockchainLifecycle.startAsync();
+ });
+ afterEach(async () => {
+ await blockchainLifecycle.revertAsync();
+ });
+ describe('constants', () => {
+ it('should have 18 decimals', async () => {
+ const decimals = new BigNumber(await zrxToken.decimals.callAsync());
+ 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 zrxToken.totalSupply.callAsync());
+ const expectedTotalSupply = 1000000000;
+ expect(Web3Wrapper.toUnitAmount(totalSupply, 18)).to.be.bignumber.equal(expectedTotalSupply);
+ });
+
+ it('should be named 0x Protocol Token', async () => {
+ const name = await zrxToken.name.callAsync();
+ const expectedName = '0x Protocol Token';
+ expect(name).to.be.equal(expectedName);
+ });
+
+ it('should have the symbol ZRX', async () => {
+ const symbol = await zrxToken.symbol.callAsync();
+ const expectedSymbol = 'ZRX';
+ expect(symbol).to.be.equal(expectedSymbol);
+ });
+ });
+
+ describe('constructor', () => {
+ it('should initialize owner balance to totalSupply', async () => {
+ const ownerBalance = await zrxToken.balanceOf.callAsync(owner);
+ const totalSupply = new BigNumber(await zrxToken.totalSupply.callAsync());
+ expect(totalSupply).to.be.bignumber.equal(ownerBalance);
+ });
+ });
+
+ describe('transfer', () => {
+ it('should transfer balance from sender to receiver', async () => {
+ const receiver = spender;
+ const initOwnerBalance = await zrxToken.balanceOf.callAsync(owner);
+ const amountToTransfer = new BigNumber(1);
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await zrxToken.transfer.sendTransactionAsync(receiver, amountToTransfer, { from: owner }),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+ const finalOwnerBalance = await zrxToken.balanceOf.callAsync(owner);
+ const finalReceiverBalance = await zrxToken.balanceOf.callAsync(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 zrxToken.transfer.callAsync(spender, new BigNumber(0), {
+ from: owner,
+ });
+ expect(didReturnTrue).to.be.true();
+ });
+ });
+
+ describe('transferFrom', () => {
+ it('should return false if owner has insufficient balance', async () => {
+ const ownerBalance = await zrxToken.balanceOf.callAsync(owner);
+ const amountToTransfer = ownerBalance.plus(1);
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await zrxToken.approve.sendTransactionAsync(spender, amountToTransfer, {
+ from: owner,
+ gas: constants.MAX_TOKEN_APPROVE_GAS,
+ }),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+ const didReturnTrue = await zrxToken.transferFrom.callAsync(owner, spender, amountToTransfer, {
+ from: spender,
+ });
+ expect(didReturnTrue).to.be.false();
+ });
+
+ it('should return false if spender has insufficient allowance', async () => {
+ const ownerBalance = await zrxToken.balanceOf.callAsync(owner);
+ const amountToTransfer = ownerBalance;
+
+ const spenderAllowance = await zrxToken.allowance.callAsync(owner, spender);
+ const isSpenderAllowanceInsufficient = spenderAllowance.cmp(amountToTransfer) < 0;
+ expect(isSpenderAllowanceInsufficient).to.be.true();
+
+ const didReturnTrue = await zrxToken.transferFrom.callAsync(owner, spender, amountToTransfer, {
+ from: spender,
+ });
+ expect(didReturnTrue).to.be.false();
+ });
+
+ it('should return true on a 0 value transfer', async () => {
+ const amountToTransfer = new BigNumber(0);
+ const didReturnTrue = await zrxToken.transferFrom.callAsync(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 zrxToken.balanceOf.callAsync(owner);
+ const amountToTransfer = initOwnerBalance;
+ const initSpenderAllowance = MAX_UINT;
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await zrxToken.approve.sendTransactionAsync(spender, initSpenderAllowance, {
+ from: owner,
+ gas: constants.MAX_TOKEN_APPROVE_GAS,
+ }),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await zrxToken.transferFrom.sendTransactionAsync(owner, spender, amountToTransfer, {
+ from: spender,
+ gas: constants.MAX_TOKEN_TRANSFERFROM_GAS,
+ }),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+
+ const newSpenderAllowance = await zrxToken.allowance.callAsync(owner, spender);
+ expect(initSpenderAllowance).to.be.bignumber.equal(newSpenderAllowance);
+ });
+
+ it('should transfer the correct balances if spender has sufficient allowance', async () => {
+ const initOwnerBalance = await zrxToken.balanceOf.callAsync(owner);
+ const initSpenderBalance = await zrxToken.balanceOf.callAsync(spender);
+ const amountToTransfer = initOwnerBalance;
+ const initSpenderAllowance = initOwnerBalance;
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await zrxToken.approve.sendTransactionAsync(spender, initSpenderAllowance),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await zrxToken.transferFrom.sendTransactionAsync(owner, spender, amountToTransfer, {
+ from: spender,
+ gas: constants.MAX_TOKEN_TRANSFERFROM_GAS,
+ }),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+
+ const newOwnerBalance = await zrxToken.balanceOf.callAsync(owner);
+ const newSpenderBalance = await zrxToken.balanceOf.callAsync(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 zrxToken.balanceOf.callAsync(owner);
+ const amountToTransfer = initOwnerBalance;
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await zrxToken.approve.sendTransactionAsync(spender, amountToTransfer),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+ await web3Wrapper.awaitTransactionSuccessAsync(
+ await zrxToken.transferFrom.sendTransactionAsync(owner, spender, amountToTransfer, {
+ from: spender,
+ gas: constants.MAX_TOKEN_TRANSFERFROM_GAS,
+ }),
+ constants.AWAIT_TRANSACTION_MINED_MS,
+ );
+
+ const newSpenderAllowance = await zrxToken.allowance.callAsync(owner, spender);
+ expect(newSpenderAllowance).to.be.bignumber.equal(0);
+ });
+ });
+});