Add contracts to packages, fix most linting errors

packages/contracts/test/ts/token_transfer_proxy/auth.ts

@@ -0,0 +1,83 @@
+import * as chai from 'chai';
+
+import {constants} from '../../../util/constants';
+import {ContractInstance} from '../../../util/types';
+import {chaiSetup} from '../utils/chai_setup';
+
+chaiSetup.configure();
+const expect = chai.expect;
+const TokenTransferProxy = artifacts.require('./db/TokenTransferProxy.sol');
+
+contract('TokenTransferProxy', (accounts: string[]) => {
+  const owner = accounts[0];
+  const notOwner = accounts[1];
+
+  let tokenTransferProxy: ContractInstance;
+  let authorized: string;
+  let notAuthorized = owner;
+
+  before(async () => {
+    tokenTransferProxy = await TokenTransferProxy.deployed();
+  });
+
+  describe('addAuthorizedAddress', () => {
+    it('should throw if not called by owner', async () => {
+      return expect(tokenTransferProxy.addAuthorizedAddress(notOwner, {from: notOwner}))
+        .to.be.rejectedWith(constants.INVALID_OPCODE);
+    });
+
+    it('should allow owner to add an authorized address', async () => {
+      await tokenTransferProxy.addAuthorizedAddress(notAuthorized, {from: owner});
+      authorized = notAuthorized;
+      notAuthorized = null;
+      const isAuthorized = await tokenTransferProxy.authorized.call(authorized);
+      expect(isAuthorized).to.be.true();
+    });
+
+    it('should throw if owner attempts to authorize a duplicate address', async () => {
+      return expect(tokenTransferProxy.addAuthorizedAddress(authorized, {from: owner}))
+        .to.be.rejectedWith(constants.INVALID_OPCODE);
+    });
+  });
+
+  describe('removeAuthorizedAddress', () => {
+    it('should throw if not called by owner', async () => {
+      return expect(tokenTransferProxy.removeAuthorizedAddress(authorized, {from: notOwner}))
+        .to.be.rejectedWith(constants.INVALID_OPCODE);
+    });
+
+    it('should allow owner to remove an authorized address', async () => {
+      await tokenTransferProxy.removeAuthorizedAddress(authorized, {from: owner});
+      notAuthorized = authorized;
+      authorized = null;
+
+      const isAuthorized = await tokenTransferProxy.authorized.call(notAuthorized);
+      expect(isAuthorized).to.be.false();
+    });
+
+    it('should throw if owner attempts to remove an address that is not authorized', async () => {
+      return expect(tokenTransferProxy.removeAuthorizedAddress(notAuthorized, {from: owner}))
+        .to.be.rejectedWith(constants.INVALID_OPCODE);
+    });
+  });
+
+  describe('getAuthorizedAddresses', () => {
+    it('should return all authorized addresses', async () => {
+      const initial = await tokenTransferProxy.getAuthorizedAddresses();
+      expect(initial).to.have.length(1);
+      await tokenTransferProxy.addAuthorizedAddress(notAuthorized, {from: owner});
+
+      authorized = notAuthorized;
+      notAuthorized = null;
+      const afterAdd = await tokenTransferProxy.getAuthorizedAddresses();
+      expect(afterAdd).to.have.length(2);
+      expect(afterAdd).to.include(authorized);
+
+      await tokenTransferProxy.removeAuthorizedAddress(authorized, {from: owner});
+      notAuthorized = authorized;
+      authorized = null;
+      const afterRemove = await tokenTransferProxy.getAuthorizedAddresses();
+      expect(afterRemove).to.have.length(1);
+    });
+  });
+});

packages/contracts/test/ts/token_transfer_proxy/transfer_from.ts

@@ -0,0 +1,66 @@
+import * as chai from 'chai';
+
+import {Artifacts} from '../../../util/artifacts';
+import {Balances} from '../../../util/balances';
+import {constants} from '../../../util/constants';
+import {ContractInstance} from '../../../util/types';
+import {chaiSetup} from '../utils/chai_setup';
+
+chaiSetup.configure();
+const expect = chai.expect;
+const {
+  TokenTransferProxy,
+  DummyToken,
+  TokenRegistry,
+} = new Artifacts(artifacts);
+
+contract('TokenTransferProxy', (accounts: string[]) => {
+  const INIT_BAL = 100000000;
+  const INIT_ALLOW = 100000000;
+
+  const owner = accounts[0];
+  const notAuthorized = owner;
+
+  let tokenTransferProxy: ContractInstance;
+  let tokenRegistry: ContractInstance;
+  let rep: ContractInstance;
+  let dmyBalances: Balances;
+
+  before(async () => {
+    [tokenTransferProxy, tokenRegistry] = await Promise.all([
+      TokenTransferProxy.deployed(),
+      TokenRegistry.deployed(),
+    ]);
+    const repAddress = await tokenRegistry.getTokenAddressBySymbol('REP');
+    rep = DummyToken.at(repAddress);
+
+    dmyBalances = new Balances([rep], [accounts[0], accounts[1]]);
+    await Promise.all([
+      rep.approve(TokenTransferProxy.address, INIT_ALLOW, {from: accounts[0]}),
+      rep.setBalance(accounts[0], INIT_BAL, {from: owner}),
+      rep.approve(TokenTransferProxy.address, INIT_ALLOW, {from: accounts[1]}),
+      rep.setBalance(accounts[1], INIT_BAL, {from: owner}),
+    ]);
+  });
+
+  describe('transferFrom', () => {
+    it('should throw when called by an unauthorized address', async () => {
+      expect(tokenTransferProxy.transferFrom(rep.address, accounts[0], accounts[1], 1000, {from: notAuthorized}))
+        .to.be.rejectedWith(constants.INVALID_OPCODE);
+    });
+
+    it('should allow an authorized address to transfer', async () => {
+      const balances = await dmyBalances.getAsync();
+
+      await tokenTransferProxy.addAuthorizedAddress(notAuthorized, {from: owner});
+      const transferAmt = 10000;
+      await tokenTransferProxy.transferFrom(rep.address, accounts[0], accounts[1], transferAmt, {from: notAuthorized});
+
+      const newBalances = await dmyBalances.getAsync();
+      expect(newBalances[accounts[0]][rep.address])
+        .to.be.bignumber.equal(balances[accounts[0]][rep.address].minus(transferAmt));
+      expect(newBalances[accounts[1]][rep.address])
+        .to.be.bignumber.equal(balances[accounts[1]][rep.address].add(transferAmt));
+    });
+  });
+});