1 files changed, 117 insertions, 0 deletions
diff --git a/packages/contracts/test/ts/ether_token.ts b/packages/contracts/test/ts/ether_token.ts
new file mode 100644
index 000000000..7e98e9bef
--- /dev/null
+++ b/packages/contracts/test/ts/ether_token.ts
@@ -0,0 +1,117 @@
+import {ZeroEx, ZeroExError} from '0x.js';
+import {BigNumber} from 'bignumber.js';
+import * as chai from 'chai';
+import promisify = require('es6-promisify');
+import Web3 = require('web3');
+
+import {Artifacts} from '../../util/artifacts';
+
+import {chaiSetup} from './utils/chai_setup';
+
+const {EtherToken} = new Artifacts(artifacts);
+
+chaiSetup.configure();
+const expect = chai.expect;
+
+// In order to benefit from type-safety, we re-assign the global web3 instance injected by Truffle
+// with type `any` to a variable of type `Web3`.
+const web3: Web3 = (global as any).web3;
+
+contract('EtherToken', (accounts: string[]) => {
+  const account = accounts[0];
+  const gasPrice = ZeroEx.toBaseUnitAmount(new BigNumber(20), 9);
+  let zeroEx: ZeroEx;
+  let etherTokenAddress: string;
+  before(async () => {
+    etherTokenAddress = EtherToken.address;
+    zeroEx = new ZeroEx(web3.currentProvider, {
+        gasPrice,
+        etherTokenContractAddress: etherTokenAddress,
+    });
+  });
+
+  const sendTransactionAsync = promisify(web3.eth.sendTransaction);
+  const getEthBalanceAsync = async (owner: string) => {
+    const balanceStr = await promisify(web3.eth.getBalance)(owner);
+    const balance = new BigNumber(balanceStr);
+    return balance;
+  };
+
+  describe('deposit', () => {
+    it('should throw if caller attempts to deposit more Ether than caller balance', async () => {
+      const initEthBalance = await getEthBalanceAsync(account);
+      const ethToDeposit = initEthBalance.plus(1);
+
+      return expect(zeroEx.etherToken.depositAsync(ethToDeposit, account))
+        .to.be.rejectedWith(ZeroExError.InsufficientEthBalanceForDeposit);
+    });
+
+    it('should convert deposited Ether to wrapped Ether tokens', async () => {
+      const initEthBalance = await getEthBalanceAsync(account);
+      const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+
+      const ethToDeposit = new BigNumber(web3.toWei(1, 'ether'));
+
+      const txHash = await zeroEx.etherToken.depositAsync(ethToDeposit, account);
+      const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
+
+      const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
+      const finalEthBalance = await getEthBalanceAsync(account);
+      const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+
+      expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
+      expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
+    });
+  });
+
+  describe('withdraw', () => {
+    it('should throw if caller attempts to withdraw greater than caller balance', async () => {
+      const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+      const ethTokensToWithdraw = initEthTokenBalance.plus(1);
+
+      return expect(zeroEx.etherToken.withdrawAsync(ethTokensToWithdraw, account))
+        .to.be.rejectedWith(ZeroExError.InsufficientWEthBalanceForWithdrawal);
+    });
+
+    it('should convert ether tokens to ether with sufficient balance', async () => {
+      const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+      const initEthBalance = await getEthBalanceAsync(account);
+      const ethTokensToWithdraw = initEthTokenBalance;
+      expect(ethTokensToWithdraw).to.not.be.bignumber.equal(0);
+      const txHash = await zeroEx.etherToken.withdrawAsync(ethTokensToWithdraw, account);
+      const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
+
+      const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
+      const finalEthBalance = await getEthBalanceAsync(account);
+      const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+
+      expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.plus(ethTokensToWithdraw.minus(ethSpentOnGas)));
+      expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.minus(ethTokensToWithdraw));
+    });
+  });
+
+  describe('fallback', () => {
+    it('should convert sent ether to ether tokens', async () => {
+      const initEthBalance = await getEthBalanceAsync(account);
+      const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+
+      const ethToDeposit = ZeroEx.toBaseUnitAmount(new BigNumber(1), 18);
+
+      const txHash = await sendTransactionAsync({
+        from: account,
+        to: etherTokenAddress,
+        value: ethToDeposit,
+        gasPrice,
+      });
+
+      const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
+
+      const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
+      const finalEthBalance = await getEthBalanceAsync(account);
+      const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
+
+      expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
+      expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
+    });
+  });
+});