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-rw-r--r--contracts/test-utils/src/order_factory.ts38
1 files changed, 38 insertions, 0 deletions
diff --git a/contracts/test-utils/src/order_factory.ts b/contracts/test-utils/src/order_factory.ts
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index 000000000..2449d1a8a
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+++ b/contracts/test-utils/src/order_factory.ts
@@ -0,0 +1,38 @@
+import { generatePseudoRandomSalt, orderHashUtils } from '@0x/order-utils';
+import { Order, SignatureType, SignedOrder } from '@0x/types';
+import { BigNumber } from '@0x/utils';
+
+import { getLatestBlockTimestampAsync } from './block_timestamp';
+import { constants } from './constants';
+import { signingUtils } from './signing_utils';
+
+export class OrderFactory {
+ private readonly _defaultOrderParams: Partial<Order>;
+ private readonly _privateKey: Buffer;
+ constructor(privateKey: Buffer, defaultOrderParams: Partial<Order>) {
+ this._defaultOrderParams = defaultOrderParams;
+ this._privateKey = privateKey;
+ }
+ public async newSignedOrderAsync(
+ customOrderParams: Partial<Order> = {},
+ signatureType: SignatureType = SignatureType.EthSign,
+ ): Promise<SignedOrder> {
+ const tenMinutesInSeconds = 10 * 60;
+ const currentBlockTimestamp = await getLatestBlockTimestampAsync();
+ const order = ({
+ senderAddress: constants.NULL_ADDRESS,
+ expirationTimeSeconds: new BigNumber(currentBlockTimestamp).add(tenMinutesInSeconds),
+ salt: generatePseudoRandomSalt(),
+ takerAddress: constants.NULL_ADDRESS,
+ ...this._defaultOrderParams,
+ ...customOrderParams,
+ } as any) as Order;
+ const orderHashBuff = orderHashUtils.getOrderHashBuffer(order);
+ const signature = signingUtils.signMessage(orderHashBuff, this._privateKey, signatureType);
+ const signedOrder = {
+ ...order,
+ signature: `0x${signature.toString('hex')}`,
+ };
+ return signedOrder;
+ }
+}