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-rw-r--r--packages/contracts/test/unlimited_allowance_token.ts127
1 files changed, 127 insertions, 0 deletions
diff --git a/packages/contracts/test/unlimited_allowance_token.ts b/packages/contracts/test/unlimited_allowance_token.ts
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index 000000000..1b8abd510
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+++ b/packages/contracts/test/unlimited_allowance_token.ts
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+import { ZeroEx } from '0x.js';
+import { BigNumber } from '@0xproject/utils';
+import * as chai from 'chai';
+import * as Web3 from 'web3';
+
+import { Artifacts } from '../util/artifacts';
+import { constants } from '../util/constants';
+import { ContractInstance } from '../util/types';
+
+import { chaiSetup } from './utils/chai_setup';
+
+const { DummyToken } = new Artifacts(artifacts);
+const web3: Web3 = (global as any).web3;
+chaiSetup.configure();
+const expect = chai.expect;
+
+contract('UnlimitedAllowanceToken', (accounts: string[]) => {
+ const config = {
+ networkId: constants.TESTRPC_NETWORK_ID,
+ };
+ const zeroEx = new ZeroEx(web3.currentProvider, config);
+ const owner = accounts[0];
+ const spender = accounts[1];
+
+ const MAX_MINT_VALUE = new BigNumber(100000000000000000000);
+ let tokenAddress: string;
+ let token: ContractInstance;
+
+ beforeEach(async () => {
+ token = await DummyToken.new({ from: owner });
+ await token.mint(MAX_MINT_VALUE, { from: owner });
+ tokenAddress = token.address;
+ });
+
+ describe('transfer', () => {
+ it('should transfer balance from sender to receiver', async () => {
+ const receiver = spender;
+ const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner);
+ const amountToTransfer = new BigNumber(1);
+ await zeroEx.token.transferAsync(tokenAddress, owner, receiver, amountToTransfer);
+ const finalOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner);
+ const finalReceiverBalance = await zeroEx.token.getBalanceAsync(tokenAddress, 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 token.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(tokenAddress, owner);
+ const amountToTransfer = ownerBalance.plus(1);
+ await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, amountToTransfer);
+ const didReturnTrue = await token.transferFrom.call(owner, spender, amountToTransfer, { from: spender });
+ expect(didReturnTrue).to.be.false();
+ });
+
+ it('should return false if spender has insufficient allowance', async () => {
+ const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner);
+ const amountToTransfer = ownerBalance;
+
+ const spenderAllowance = await zeroEx.token.getAllowanceAsync(tokenAddress, owner, spender);
+ const spenderAllowanceIsInsufficient = spenderAllowance.cmp(amountToTransfer) < 0;
+ expect(spenderAllowanceIsInsufficient).to.be.true();
+
+ const didReturnTrue = await token.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 token.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(tokenAddress, owner);
+ const amountToTransfer = initOwnerBalance;
+ const initSpenderAllowance = zeroEx.token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
+ await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, initSpenderAllowance);
+ await zeroEx.token.transferFromAsync(tokenAddress, owner, spender, spender, amountToTransfer, {
+ gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS,
+ });
+
+ const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(tokenAddress, owner, spender);
+ expect(initSpenderAllowance).to.be.bignumber.equal(newSpenderAllowance);
+ });
+
+ it('should transfer the correct balances if spender has sufficient allowance', async () => {
+ const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner);
+ const amountToTransfer = initOwnerBalance;
+ const initSpenderAllowance = initOwnerBalance;
+ await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, initSpenderAllowance);
+ await zeroEx.token.transferFromAsync(tokenAddress, owner, spender, spender, amountToTransfer, {
+ gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS,
+ });
+
+ const newOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner);
+ const newSpenderBalance = await zeroEx.token.getBalanceAsync(tokenAddress, spender);
+
+ expect(newOwnerBalance).to.be.bignumber.equal(0);
+ expect(newSpenderBalance).to.be.bignumber.equal(initOwnerBalance);
+ });
+
+ it('should modify allowance if spender has sufficient allowance less than 2^256 - 1', async () => {
+ const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner);
+ const amountToTransfer = initOwnerBalance;
+ const initSpenderAllowance = initOwnerBalance;
+ await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, initSpenderAllowance);
+ await zeroEx.token.transferFromAsync(tokenAddress, owner, spender, spender, amountToTransfer, {
+ gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS,
+ });
+
+ const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(tokenAddress, owner, spender);
+ expect(newSpenderAllowance).to.be.bignumber.equal(0);
+ });
+ });
+});