Updated test

packages/gui/src/util/createOfferForIdsToOfferBuilderData.test.ts

@@ -198,10 +198,10 @@ describe('createOfferForIdsToOfferBuilderData', () => {
       });
     });
   });
-  describe('when the amount is NaN', () => {
+  describe('when the amount is NaN (Non null)', () => {
     it('should throw an error', () => {
       const walletIdsAndAmounts = {
-        1: {},
+        1: NaN,
         2: -1234,
       };
 
@@ -211,6 +211,19 @@ describe('createOfferForIdsToOfferBuilderData', () => {
       );
     });
   });
+  describe('when the amount is null', () => {
+    it('should throw an error', () => {
+      const walletIdsAndAmounts = {
+        1: {},
+        2: -1234,
+      };
+
+      // call to createOfferForIdsToOfferBuilderData should throw an error
+      expect(() => createOfferForIdsToOfferBuilderData(walletIdsAndAmounts as any, (() => {}) as any)).toThrow(
+        /Amount is not set for/,
+      );
+    });
+  });
   describe('when the offered asset is for an unknown wallet type', () => {
     it('should ignore the unknown wallet assets', () => {
       const calledLookupByWalletIdWithIds: string[] = [];