1 files changed, 168 insertions, 0 deletions
diff --git a/packages/contracts/test/ts/zrxToken.ts b/packages/contracts/test/ts/zrxToken.ts
new file mode 100644
index 000000000..8099c0942
--- /dev/null
+++ b/packages/contracts/test/ts/zrxToken.ts
@@ -0,0 +1,168 @@
+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);
+    });
+  });
+});