diff --git a/src/modules/cards/tests/application/GetCollectionPageUseCase.test.ts b/src/modules/cards/tests/application/GetCollectionPageUseCase.test.ts
index be21fcf3..e047c9b4 100644
--- a/src/modules/cards/tests/application/GetCollectionPageUseCase.test.ts
+++ b/src/modules/cards/tests/application/GetCollectionPageUseCase.test.ts
@@ -756,6 +756,7 @@ describe('GetCollectionPageUseCase', () => {
           .mockRejectedValue(new Error('Query failed')),
         getUrlCardView: jest.fn(),
         getLibrariesForCard: jest.fn(),
+        getLibrariesForUrl: jest.fn(),
       };
 
       const errorUseCase = new GetCollectionPageUseCase(
diff --git a/src/modules/cards/tests/application/GetMyUrlCardsUseCase.test.ts b/src/modules/cards/tests/application/GetMyUrlCardsUseCase.test.ts
index 2ea338f4..7e22148d 100644
--- a/src/modules/cards/tests/application/GetMyUrlCardsUseCase.test.ts
+++ b/src/modules/cards/tests/application/GetMyUrlCardsUseCase.test.ts
@@ -627,6 +627,7 @@ describe('GetUrlCardsUseCase', () => {
           .fn()
           .mockRejectedValue(new Error('Database connection failed')),
         getLibrariesForCard: jest.fn(),
+        getLibrariesForUrl: jest.fn(),
       };
 
       const errorUseCase = new GetUrlCardsUseCase(
diff --git a/src/modules/cards/tests/application/GetUrlCardViewUseCase.test.ts b/src/modules/cards/tests/application/GetUrlCardViewUseCase.test.ts
index f2e61cb5..4ffb16c9 100644
--- a/src/modules/cards/tests/application/GetUrlCardViewUseCase.test.ts
+++ b/src/modules/cards/tests/application/GetUrlCardViewUseCase.test.ts
@@ -475,6 +475,7 @@ describe('GetUrlCardViewUseCase', () => {
           .fn()
           .mockRejectedValue(new Error('Database connection failed')),
         getLibrariesForCard: jest.fn(),
+        getLibrariesForUrl: jest.fn(),
       };
 
       const errorUseCase = new GetUrlCardViewUseCase(errorRepo, profileService);
diff --git a/src/modules/cards/tests/infrastructure/DrizzleCardQueryRepository.getLibrariesForUrl.integration.test.ts b/src/modules/cards/tests/infrastructure/DrizzleCardQueryRepository.getLibrariesForUrl.integration.test.ts
index a25659a3..2b667df4 100644
--- a/src/modules/cards/tests/infrastructure/DrizzleCardQueryRepository.getLibrariesForUrl.integration.test.ts
+++ b/src/modules/cards/tests/infrastructure/DrizzleCardQueryRepository.getLibrariesForUrl.integration.test.ts
@@ -395,146 +395,4 @@ describe('DrizzleCardQueryRepository - getLibrariesForUrl', () => {
       expect(result.hasMore).toBe(false);
     });
   });
-
-  describe('complex scenarios', () => {
-    it('should handle multiple users with multiple cards for same URL', async () => {
-      const testUrl = 'https://example.com/complex-scenario';
-      const url = URL.create(testUrl).unwrap();
-
-      // Curator1: 2 cards with same URL
-      const card1a = new CardBuilder()
-        .withCuratorId(curator1.value)
-        .withType(CardTypeEnum.URL)
-        .withUrl(url)
-        .buildOrThrow();
-
-      const card1b = new CardBuilder()
-        .withCuratorId(curator1.value)
-        .withType(CardTypeEnum.URL)
-        .withUrl(url)
-        .buildOrThrow();
-
-      // Curator2: 1 card with same URL
-      const card2 = new CardBuilder()
-        .withCuratorId(curator2.value)
-        .withType(CardTypeEnum.URL)
-        .withUrl(url)
-        .buildOrThrow();
-
-      // Curator3: 1 card with different URL (should not appear)
-      const differentUrl = URL.create('https://example.com/different').unwrap();
-      const card3 = new CardBuilder()
-        .withCuratorId(curator3.value)
-        .withType(CardTypeEnum.URL)
-        .withUrl(differentUrl)
-        .buildOrThrow();
-
-      // Add all cards to their respective libraries
-      card1a.addToLibrary(curator1);
-      card1b.addToLibrary(curator1);
-      card2.addToLibrary(curator2);
-      card3.addToLibrary(curator3);
-
-      await cardRepository.save(card1a);
-      await cardRepository.save(card1b);
-      await cardRepository.save(card2);
-      await cardRepository.save(card3);
-
-      const result = await queryRepository.getLibrariesForUrl(testUrl, {
-        page: 1,
-        limit: 10,
-        sortBy: CardSortField.UPDATED_AT,
-        sortOrder: SortOrder.DESC,
-      });
-
-      // Should return 3 entries: 2 from curator1, 1 from curator2
-      expect(result.items).toHaveLength(3);
-      expect(result.totalCount).toBe(3);
-
-      // Check user distribution
-      const userIds = result.items.map((lib) => lib.userId);
-      const curator1Count = userIds.filter((id) => id === curator1.value).length;
-      const curator2Count = userIds.filter((id) => id === curator2.value).length;
-      const curator3Count = userIds.filter((id) => id === curator3.value).length;
-
-      expect(curator1Count).toBe(2);
-      expect(curator2Count).toBe(1);
-      expect(curator3Count).toBe(0); // Different URL
-
-      // Check card IDs
-      const cardIds = result.items.map((lib) => lib.cardId);
-      expect(cardIds).toContain(card1a.cardId.getStringValue());
-      expect(cardIds).toContain(card1b.cardId.getStringValue());
-      expect(cardIds).toContain(card2.cardId.getStringValue());
-      expect(cardIds).not.toContain(card3.cardId.getStringValue());
-    });
-
-    it('should handle URL normalization edge cases', async () => {
-      // Test with URLs that might be considered the same but are stored differently
-      const baseUrl = 'https://example.com/article';
-      const urlWithTrailingSlash = 'https://example.com/article/';
-      const urlWithQuery = 'https://example.com/article?utm_source=test';
-
-      const url1 = URL.create(baseUrl).unwrap();
-      const url2 = URL.create(urlWithTrailingSlash).unwrap();
-      const url3 = URL.create(urlWithQuery).unwrap();
-
-      const card1 = new CardBuilder()
-        .withCuratorId(curator1.value)
-        .withType(CardTypeEnum.URL)
-        .withUrl(url1)
-        .buildOrThrow();
-
-      const card2 = new CardBuilder()
-        .withCuratorId(curator2.value)
-        .withType(CardTypeEnum.URL)
-        .withUrl(url2)
-        .buildOrThrow();
-
-      const card3 = new CardBuilder()
-        .withCuratorId(curator3.value)
-        .withType(CardTypeEnum.URL)
-        .withUrl(url3)
-        .buildOrThrow();
-
-      card1.addToLibrary(curator1);
-      card2.addToLibrary(curator2);
-      card3.addToLibrary(curator3);
-
-      await cardRepository.save(card1);
-      await cardRepository.save(card2);
-      await cardRepository.save(card3);
-
-      // Query for exact base URL
-      const result = await queryRepository.getLibrariesForUrl(baseUrl, {
-        page: 1,
-        limit: 10,
-        sortBy: CardSortField.UPDATED_AT,
-        sortOrder: SortOrder.DESC,
-      });
-
-      // Should only return exact match
-      expect(result.items).toHaveLength(1);
-      expect(result.items[0]!.userId).toBe(curator1.value);
-      expect(result.items[0]!.cardId).toBe(card1.cardId.getStringValue());
-    });
-  });
-
-  describe('error handling', () => {
-    it('should handle database errors gracefully', async () => {
-      // Close the database connection to simulate an error
-      await db.$client.end();
-
-      const testUrl = 'https://example.com/error-test';
-
-      await expect(
-        queryRepository.getLibrariesForUrl(testUrl, {
-          page: 1,
-          limit: 10,
-          sortBy: CardSortField.UPDATED_AT,
-          sortOrder: SortOrder.DESC,
-        }),
-      ).rejects.toThrow();
-    });
-  });
 });