Add test when the order was already cancelled or filled

src/types.ts

@@ -80,6 +80,9 @@ export interface ExchangeContract {
     cancelled: {
         call: (orderHash: string) => BigNumber.BigNumber;
     };
+    getOrderHash: {
+        call: (orderAddresses: OrderAddresses, orderValues: OrderValues) => string;
+    }
 }
 
 export interface TokenContract {
@@ -123,6 +126,7 @@ export const ExchangeContractErrs = strEnum([
     'ORDER_FILL_EXPIRED',
     'ORDER_CANCEL_EXPIRED',
     'ORDER_CANCEL_AMOUNT_ZERO',
+    'ORDER_ALREADY_CANCELLED_OR_FILLED',
     'ORDER_REMAINING_FILL_AMOUNT_ZERO',
     'ORDER_FILL_ROUNDING_ERROR',
     'FILL_BALANCE_ALLOWANCE_ERROR',