Fix member linking test

Author: Lan2u

src/read-models/shared-state/member-linking.ts

@@ -18,9 +18,9 @@ export class MemberLinking {
     for (const group of this.grouping) {
       for (const memberNumber of numbers) {
         if (group.has(memberNumber)) {
-          numbers.forEach(group.add);
+          numbers.forEach(v => group.add(v));
+          return;
         }
-        return;
       }
     }
     this.grouping.push(new Set(numbers));

tests/read-models/shared-state/group-membership-numbers.test.ts

@@ -1,25 +1,21 @@
-import {ReadonlyNonEmptyArray} from 'fp-ts/lib/ReadonlyNonEmptyArray';
 import {MemberLinking} from '../../../src/read-models/shared-state/member-linking';
 
 describe('Group membership numbers', () => {
   const tests: {
     input: number[][];
-    output: ReadonlyArray<ReadonlyNonEmptyArray<number>>;
+    output: ReadonlyArray<ReadonlySet<number>>;
   }[] = [
     {
       input: [[1, 2]],
-      output: [[1, 2]],
+      output: [new Set([1, 2])],
     },
     {
       input: [
         [1, 2],
         [2, 3],
         [4, 5],
       ],
-      output: [
-        [1, 2, 3],
-        [4, 5],
-      ],
+      output: [new Set([1, 2, 3]), new Set([4, 5])],
     },
   ];