test: api test for referenceId as number (#5915)

* test: api test for correctly interpeting referenceId that could be interpreted as number AB#30721

* test: added separate tests for $ilike and $in

services/121-service/test/registrations/pagination/filter-registration.test.ts

@@ -165,5 +165,71 @@ describe('Load PA table', () => {
       }
       expect(meta.totalItems).toBe(1);
     });
+
+    it('should filter with $eq using a referenceId string that could be interpreted as number', async () => {
+      // Arrange
+      const referenceIdInterpretableAsNumber = '651581942751358e5'; // A just-number string like '1234567890' is somehow not sufficiently covering the edge case, as this would not lead to the same bug prior to bugfix AB#30713
+      const newRegistration = structuredClone(registrationOCW1);
+      newRegistration.referenceId = referenceIdInterpretableAsNumber;
+      await importRegistrations(programIdOCW, [newRegistration], accessToken);
+
+      // Act
+      const getRegistrationsResponse = await getRegistrations({
+        programId: programIdOCW,
+        accessToken,
+        filter: {
+          'filter.referenceId': `$eq:${referenceIdInterpretableAsNumber}`,
+        },
+      });
+      const meta = getRegistrationsResponse.body.meta;
+
+      // Assert
+      expect(getRegistrationsResponse.status).toBe(200);
+      expect(meta.totalItems).toBe(1);
+    });
+
+    it('should filter with $ilike using a referenceId string that could be interpreted as number', async () => {
+      // Arrange
+      const referenceIdInterpretableAsNumber = '751581942751358e5';
+      const newRegistration = structuredClone(registrationOCW1);
+      newRegistration.referenceId = referenceIdInterpretableAsNumber;
+      await importRegistrations(programIdOCW, [newRegistration], accessToken);
+
+      // Act
+      const getRegistrationsResponse = await getRegistrations({
+        programId: programIdOCW,
+        accessToken,
+        filter: {
+          'filter.referenceId': `$ilike:${referenceIdInterpretableAsNumber}`,
+        },
+      });
+      const meta = getRegistrationsResponse.body.meta;
+
+      // Assert
+      expect(getRegistrationsResponse.status).toBe(200);
+      expect(meta.totalItems).toBe(1);
+    });
+
+    it('should filter with $in using a referenceId string that could be interpreted as number', async () => {
+      // Arrange
+      const referenceIdInterpretableAsNumber = '851581942751358e5';
+      const newRegistration = structuredClone(registrationOCW1);
+      newRegistration.referenceId = referenceIdInterpretableAsNumber;
+      await importRegistrations(programIdOCW, [newRegistration], accessToken);
+
+      // Act
+      const getRegistrationsResponse = await getRegistrations({
+        programId: programIdOCW,
+        accessToken,
+        filter: {
+          'filter.referenceId': `$in:${referenceIdInterpretableAsNumber}`,
+        },
+      });
+      const meta = getRegistrationsResponse.body.meta;
+
+      // Assert
+      expect(getRegistrationsResponse.status).toBe(200);
+      expect(meta.totalItems).toBe(1);
+    });
   });
 });