1 files changed, 66 insertions, 0 deletions
diff --git a/packages/contracts/test/ts/token_transfer_proxy/transfer_from.ts b/packages/contracts/test/ts/token_transfer_proxy/transfer_from.ts
new file mode 100644
index 000000000..d16c5cd4b
--- /dev/null
+++ b/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));
+    });
+  });
+});