1 files changed, 58 insertions, 0 deletions
diff --git a/packages/contracts/test/utils/order_utils.ts b/packages/contracts/test/utils/order_utils.ts
new file mode 100644
index 000000000..019f6e74b
--- /dev/null
+++ b/packages/contracts/test/utils/order_utils.ts
@@ -0,0 +1,58 @@
+import { OrderWithoutExchangeAddress, SignedOrder } from '@0xproject/types';
+import { BigNumber } from '@0xproject/utils';
+
+import { constants } from './constants';
+import { CancelOrder, MatchOrder } from './types';
+
+export const orderUtils = {
+    getPartialAmount(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
+        const partialAmount = numerator
+            .mul(target)
+            .div(denominator)
+            .floor();
+        return partialAmount;
+    },
+    createFill: (signedOrder: SignedOrder, takerAssetFillAmount?: BigNumber) => {
+        const fill = {
+            order: orderUtils.getOrderWithoutExchangeAddress(signedOrder),
+            takerAssetFillAmount: takerAssetFillAmount || signedOrder.takerAssetAmount,
+            signature: signedOrder.signature,
+        };
+        return fill;
+    },
+    createCancel(signedOrder: SignedOrder, takerAssetCancelAmount?: BigNumber): CancelOrder {
+        const cancel = {
+            order: orderUtils.getOrderWithoutExchangeAddress(signedOrder),
+            takerAssetCancelAmount: takerAssetCancelAmount || signedOrder.takerAssetAmount,
+        };
+        return cancel;
+    },
+    getOrderWithoutExchangeAddress(signedOrder: SignedOrder): OrderWithoutExchangeAddress {
+        const orderStruct = {
+            senderAddress: signedOrder.senderAddress,
+            makerAddress: signedOrder.makerAddress,
+            takerAddress: signedOrder.takerAddress,
+            feeRecipientAddress: signedOrder.feeRecipientAddress,
+            makerAssetAmount: signedOrder.makerAssetAmount,
+            takerAssetAmount: signedOrder.takerAssetAmount,
+            makerFee: signedOrder.makerFee,
+            takerFee: signedOrder.takerFee,
+            expirationTimeSeconds: signedOrder.expirationTimeSeconds,
+            salt: signedOrder.salt,
+            makerAssetData: signedOrder.makerAssetData,
+            takerAssetData: signedOrder.takerAssetData,
+        };
+        return orderStruct;
+    },
+    createMatchOrders(signedOrderLeft: SignedOrder, signedOrderRight: SignedOrder): MatchOrder {
+        const fill = {
+            left: orderUtils.getOrderWithoutExchangeAddress(signedOrderLeft),
+            right: orderUtils.getOrderWithoutExchangeAddress(signedOrderRight),
+            leftSignature: signedOrderLeft.signature,
+            rightSignature: signedOrderRight.signature,
+        };
+        fill.right.makerAssetData = constants.NULL_BYTES;
+        fill.right.takerAssetData = constants.NULL_BYTES;
+        return fill;
+    },
+};