1 files changed, 175 insertions, 0 deletions
diff --git a/packages/contracts/test/ts/zrx_token.ts b/packages/contracts/test/ts/zrx_token.ts
new file mode 100644
index 000000000..766c94c2a
--- /dev/null
+++ b/packages/contracts/test/ts/zrx_token.ts
@@ -0,0 +1,175 @@
+import { ZeroEx } from '0x.js';
+import { BigNumber } from '@0xproject/utils';
+import * as chai from 'chai';
+import Web3 = require('web3');
+
+import { Artifacts } from '../../util/artifacts';
+import { constants } from '../../util/constants';
+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,
+            networkId: constants.TESTRPC_NETWORK_ID,
+        });
+        zrx = await ZRXToken.new();
+        zrxAddress = zrx.address;
+        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);
+            const txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, amountToTransfer, {
+                gasLimit: constants.MAX_TOKEN_APPROVE_GAS,
+            });
+            await zeroEx.awaitTransactionMinedAsync(txHash);
+            const didReturnTrue = await zrx.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(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, {
+                gasLimit: constants.MAX_TOKEN_APPROVE_GAS,
+            });
+            await zeroEx.awaitTransactionMinedAsync(txHash);
+            txHash = await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer, {
+                gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS,
+            });
+            await zeroEx.awaitTransactionMinedAsync(txHash);
+
+            const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(zrxAddress, 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(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, {
+                gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS,
+            });
+            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;
+            let txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, amountToTransfer);
+            await zeroEx.awaitTransactionMinedAsync(txHash);
+            txHash = await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer, {
+                gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS,
+            });
+            await zeroEx.awaitTransactionMinedAsync(txHash);
+
+            const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(zrxAddress, owner, spender);
+            expect(newSpenderAllowance).to.be.bignumber.equal(0);
+        });
+    });
+});