test(trading): handle unspecified side in fills table - e2e tests (#3594)

apps/trading-e2e/src/integration/trading-fills.cy.ts

@@ -85,7 +85,7 @@ describe('fills', { tags: '@regression' }, () => {
         cy.wrap($role)
           .invoke('text')
           .then((text) => {
-            const roles = ['Maker', 'Taker'];
+            const roles = ['Maker', 'Taker', '-'];
             expect(roles.indexOf(text.trim())).to.be.greaterThan(-1);
           });
       });

libs/fills/src/lib/fills.mock.ts

@@ -152,6 +152,16 @@ const fills = (id?: string): FillFieldsFragment[] => [
       id: id || 'buyer-id',
     },
   }),
+  fillFieldsFragment({
+    id: '4',
+    aggressor: Schema.Side.SIDE_UNSPECIFIED,
+    market: {
+      id: 'market-2',
+    },
+    buyer: {
+      id: id || 'buyer-id',
+    },
+  }),
 ];
 
 export const fillsEventSubscription = (