From 6eb192f0ea056bc84e04df1845f484a906ad392c Mon Sep 17 00:00:00 2001
From: Leonid Logvinov <logvinov.leon@gmail.com>
Date: Thu, 8 Jun 2017 18:14:29 +0200
Subject: Add tests for fillOrdersUpTo

---
 src/contract_wrappers/exchange_wrapper.ts | 14 ++++++-------
 test/exchange_wrapper_test.ts             | 34 +++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 7 deletions(-)

diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index 524ebdc0f..afaa89c94 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -180,10 +180,10 @@ export class ExchangeWrapper extends ContractWrapper {
      * If fill amount is reached - it succeeds and doesn't fill the rest of the orders.
      * If fill amount is not reached - it just fills all the orders.
      */
-    public async fillOrderUpToAsync(signedOrders: SignedOrder[], takerTokenFillAmount: BigNumber.BigNumber,
-                                    shouldCheckTransfer: boolean, takerAddress: string): Promise<void> {
+    public async fillOrdersUpToAsync(signedOrders: SignedOrder[], takerTokenFillAmount: BigNumber.BigNumber,
+                                     shouldCheckTransfer: boolean, takerAddress: string): Promise<void> {
         const takerTokenAddresses = _.map(signedOrders, signedOrder => signedOrder.takerTokenAddress);
-        assert.assert(_.uniq(takerTokenAddresses).length === 1,
+        assert.assert(_.uniq(takerTokenAddresses).length <= 1,
             ExchangeContractErrs.MULTIPLE_TAKER_TOKENS_IN_FILL_UP_TO);
         assert.isBigNumber('takerTokenFillAmount', takerTokenFillAmount);
         assert.isBoolean('shouldCheckTransfer', shouldCheckTransfer);
@@ -395,11 +395,8 @@ export class ExchangeWrapper extends ContractWrapper {
      * All orders must be from the same maker.
      */
     public async batchCancelOrderAsync(orderCancellationRequests: OrderCancellationRequest[]): Promise<void> {
-        if (_.isEmpty(orderCancellationRequests)) {
-            return; // no-op
-        }
         const makers = _.map(orderCancellationRequests, cancellationRequest => cancellationRequest.order.maker);
-        assert.assert(_.uniq(makers).length === 1, ExchangeContractErrs.MULTIPLE_MAKERS_IN_SINGLE_CANCEL_BATCH);
+        assert.assert(_.uniq(makers).length <= 1, ExchangeContractErrs.MULTIPLE_MAKERS_IN_SINGLE_CANCEL_BATCH);
         const maker = makers[0];
         await assert.isSenderAddressAsync('maker', maker, this.web3Wrapper);
         _.forEach(orderCancellationRequests,
@@ -414,6 +411,9 @@ export class ExchangeWrapper extends ContractWrapper {
                 cancellationRequest.order, cancellationRequest.takerTokenCancelAmount,
             );
         });
+        if (_.isEmpty(orderCancellationRequests)) {
+            return; // no-op
+        }
         const exchangeInstance = await this.getExchangeContractAsync();
         const orderAddressesValuesAndTakerTokenCancelAmounts = _.map(orderCancellationRequests, cancellationRequest => {
             return [
diff --git a/test/exchange_wrapper_test.ts b/test/exchange_wrapper_test.ts
index e3d8be1c0..4a1dbaed6 100644
--- a/test/exchange_wrapper_test.ts
+++ b/test/exchange_wrapper_test.ts
@@ -367,6 +367,40 @@ describe('ExchangeWrapper', () => {
                 });
             });
         });
+        describe('#fillOrdersUpTo', () => {
+            let signedOrder: SignedOrder;
+            let signedOrderHashHex: string;
+            let anotherSignedOrder: SignedOrder;
+            let anotherOrderHashHex: string;
+            let signedOrders: SignedOrder[];
+            const fillUpToAmount = fillableAmount.plus(fillableAmount).minus(1);
+            beforeEach(async () => {
+                signedOrder = await fillScenarios.createFillableSignedOrderAsync(
+                    makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount,
+                );
+                signedOrderHashHex = await zeroEx.getOrderHashHexAsync(signedOrder);
+                anotherSignedOrder = await fillScenarios.createFillableSignedOrderAsync(
+                    makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount,
+                );
+                anotherOrderHashHex = await zeroEx.getOrderHashHexAsync(anotherSignedOrder);
+                signedOrders = [signedOrder, anotherSignedOrder];
+            });
+            describe('successful batch fills', () => {
+                it('should no-op for an empty batch', async () => {
+                    await zeroEx.exchange.fillOrdersUpToAsync([], fillUpToAmount, shouldCheckTransfer, takerAddress);
+                });
+                it('should successfully fill up to specified amount', async () => {
+                    await zeroEx.exchange.fillOrdersUpToAsync(
+                        signedOrders, fillUpToAmount, shouldCheckTransfer, takerAddress,
+                    );
+                    const filledAmount = await zeroEx.exchange.getFilledTakerAmountAsync(signedOrderHashHex);
+                    const anotherFilledAmount = await zeroEx.exchange.getFilledTakerAmountAsync(anotherOrderHashHex);
+                    expect(filledAmount).to.be.bignumber.equal(fillableAmount);
+                    const remainingFillAmount = fillUpToAmount.minus(filledAmount);
+                    expect(anotherFilledAmount).to.be.bignumber.equal(remainingFillAmount);
+                });
+            });
+        });
     });
     describe('cancel order(s)', () => {
         let makerTokenAddress: string;
-- 
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