/**
 * Integration Test: Leagues Discovery Use Case Orchestration
 * 
 * Tests the orchestration logic of leagues discovery-related Use Cases:
 * - SearchLeaguesUseCase: Searches for leagues based on criteria
 * - GetLeagueRecommendationsUseCase: Retrieves recommended leagues
 * - GetPopularLeaguesUseCase: Retrieves popular leagues
 * - GetFeaturedLeaguesUseCase: Retrieves featured leagues
 * - GetLeaguesByCategoryUseCase: Retrieves leagues by category
 * - GetLeaguesByRegionUseCase: Retrieves leagues by region
 * - GetLeaguesByGameUseCase: Retrieves leagues by game
 * - GetLeaguesBySkillLevelUseCase: Retrieves leagues by skill level
 * - GetLeaguesBySizeUseCase: Retrieves leagues by size
 * - GetLeaguesByActivityUseCase: Retrieves leagues by activity
 * - Validates that Use Cases correctly interact with their Ports (Repositories, Event Publishers)
 * - Uses In-Memory adapters for fast, deterministic testing
 * 
 * Focus: Business logic orchestration, NOT UI rendering
 */

import { describe, it, expect, beforeAll, afterAll, beforeEach } from 'vitest';
import { InMemoryLeagueRepository } from '../../../adapters/leagues/persistence/inmemory/InMemoryLeagueRepository';
import { InMemoryEventPublisher } from '../../../adapters/events/InMemoryEventPublisher';
import { SearchLeaguesUseCase } from '../../../core/leagues/use-cases/SearchLeaguesUseCase';
import { GetLeagueRecommendationsUseCase } from '../../../core/leagues/use-cases/GetLeagueRecommendationsUseCase';
import { GetPopularLeaguesUseCase } from '../../../core/leagues/use-cases/GetPopularLeaguesUseCase';
import { GetFeaturedLeaguesUseCase } from '../../../core/leagues/use-cases/GetFeaturedLeaguesUseCase';
import { GetLeaguesByCategoryUseCase } from '../../../core/leagues/use-cases/GetLeaguesByCategoryUseCase';
import { GetLeaguesByRegionUseCase } from '../../../core/leagues/use-cases/GetLeaguesByRegionUseCase';
import { GetLeaguesByGameUseCase } from '../../../core/leagues/use-cases/GetLeaguesByGameUseCase';
import { GetLeaguesBySkillLevelUseCase } from '../../../core/leagues/use-cases/GetLeaguesBySkillLevelUseCase';
import { GetLeaguesBySizeUseCase } from '../../../core/leagues/use-cases/GetLeaguesBySizeUseCase';
import { GetLeaguesByActivityUseCase } from '../../../core/leagues/use-cases/GetLeaguesByActivityUseCase';
import { LeaguesSearchQuery } from '../../../core/leagues/ports/LeaguesSearchQuery';
import { LeaguesRecommendationsQuery } from '../../../core/leagues/ports/LeaguesRecommendationsQuery';
import { LeaguesPopularQuery } from '../../../core/leagues/ports/LeaguesPopularQuery';
import { LeaguesFeaturedQuery } from '../../../core/leagues/ports/LeaguesFeaturedQuery';
import { LeaguesByCategoryQuery } from '../../../core/leagues/ports/LeaguesByCategoryQuery';
import { LeaguesByRegionQuery } from '../../../core/leagues/ports/LeaguesByRegionQuery';
import { LeaguesByGameQuery } from '../../../core/leagues/ports/LeaguesByGameQuery';
import { LeaguesBySkillLevelQuery } from '../../../core/leagues/ports/LeaguesBySkillLevelQuery';
import { LeaguesBySizeQuery } from '../../../core/leagues/ports/LeaguesBySizeQuery';
import { LeaguesByActivityQuery } from '../../../core/leagues/ports/LeaguesByActivityQuery';

describe('Leagues Discovery Use Case Orchestration', () => {
  let leagueRepository: InMemoryLeagueRepository;
  let eventPublisher: InMemoryEventPublisher;
  let searchLeaguesUseCase: SearchLeaguesUseCase;
  let getLeagueRecommendationsUseCase: GetLeagueRecommendationsUseCase;
  let getPopularLeaguesUseCase: GetPopularLeaguesUseCase;
  let getFeaturedLeaguesUseCase: GetFeaturedLeaguesUseCase;
  let getLeaguesByCategoryUseCase: GetLeaguesByCategoryUseCase;
  let getLeaguesByRegionUseCase: GetLeaguesByRegionUseCase;
  let getLeaguesByGameUseCase: GetLeaguesByGameUseCase;
  let getLeaguesBySkillLevelUseCase: GetLeaguesBySkillLevelUseCase;
  let getLeaguesBySizeUseCase: GetLeaguesBySizeUseCase;
  let getLeaguesByActivityUseCase: GetLeaguesByActivityUseCase;

  beforeAll(() => {
    // TODO: Initialize In-Memory repositories and event publisher
    // leagueRepository = new InMemoryLeagueRepository();
    // eventPublisher = new InMemoryEventPublisher();
    // searchLeaguesUseCase = new SearchLeaguesUseCase({
    //   leagueRepository,
    //   eventPublisher,
    // });
    // getLeagueRecommendationsUseCase = new GetLeagueRecommendationsUseCase({
    //   leagueRepository,
    //   eventPublisher,
    // });
    // getPopularLeaguesUseCase = new GetPopularLeaguesUseCase({
    //   leagueRepository,
    //   eventPublisher,
    // });
    // getFeaturedLeaguesUseCase = new GetFeaturedLeaguesUseCase({
    //   leagueRepository,
    //   eventPublisher,
    // });
    // getLeaguesByCategoryUseCase = new GetLeaguesByCategoryUseCase({
    //   leagueRepository,
    //   eventPublisher,
    // });
    // getLeaguesByRegionUseCase = new GetLeaguesByRegionUseCase({
    //   leagueRepository,
    //   eventPublisher,
    // });
    // getLeaguesByGameUseCase = new GetLeaguesByGameUseCase({
    //   leagueRepository,
    //   eventPublisher,
    // });
    // getLeaguesBySkillLevelUseCase = new GetLeaguesBySkillLevelUseCase({
    //   leagueRepository,
    //   eventPublisher,
    // });
    // getLeaguesBySizeUseCase = new GetLeaguesBySizeUseCase({
    //   leagueRepository,
    //   eventPublisher,
    // });
    // getLeaguesByActivityUseCase = new GetLeaguesByActivityUseCase({
    //   leagueRepository,
    //   eventPublisher,
    // });
  });

  beforeEach(() => {
    // TODO: Clear all In-Memory repositories before each test
    // leagueRepository.clear();
    // eventPublisher.clear();
  });

  describe('SearchLeaguesUseCase - Success Path', () => {
    it('should search leagues by name', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues by name
      // Given: Leagues exist with various names
      // When: SearchLeaguesUseCase.execute() is called with search query
      // Then: The result should show matching leagues
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues by description', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues by description
      // Given: Leagues exist with various descriptions
      // When: SearchLeaguesUseCase.execute() is called with search query
      // Then: The result should show matching leagues
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues by multiple criteria', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues by multiple criteria
      // Given: Leagues exist with various attributes
      // When: SearchLeaguesUseCase.execute() is called with multiple search criteria
      // Then: The result should show matching leagues
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues with pagination', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues with pagination
      // Given: Many leagues exist
      // When: SearchLeaguesUseCase.execute() is called with pagination
      // Then: The result should show paginated search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues with sorting', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues with sorting
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with sort order
      // Then: The result should show sorted search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues with filters', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues with filters
      // Given: Leagues exist with various attributes
      // When: SearchLeaguesUseCase.execute() is called with filters
      // Then: The result should show filtered search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues with advanced search options', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues with advanced options
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with advanced options
      // Then: The result should show search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues with fuzzy search', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues with fuzzy search
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with fuzzy search
      // Then: The result should show fuzzy search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues with autocomplete', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues with autocomplete
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with autocomplete
      // Then: The result should show autocomplete suggestions
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues with saved searches', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues with saved searches
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with saved search
      // Then: The result should show search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues with search history', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues with search history
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with search history
      // Then: The result should show search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues with search suggestions', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues with search suggestions
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with search suggestions
      // Then: The result should show search suggestions
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should search leagues with search analytics', async () => {
      // TODO: Implement test
      // Scenario: User searches leagues with search analytics
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with search analytics
      // Then: The result should show search analytics
      // And: EventPublisher should emit LeaguesSearchedEvent
    });
  });

  describe('SearchLeaguesUseCase - Edge Cases', () => {
    it('should handle empty search results', async () => {
      // TODO: Implement test
      // Scenario: No leagues match search criteria
      // Given: No leagues exist that match the search criteria
      // When: SearchLeaguesUseCase.execute() is called with search query
      // Then: The result should show empty search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should handle search with no filters', async () => {
      // TODO: Implement test
      // Scenario: Search with no filters
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with no filters
      // Then: The result should show all leagues
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should handle search with no sorting', async () => {
      // TODO: Implement test
      // Scenario: Search with no sorting
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with no sorting
      // Then: The result should show leagues in default order
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should handle search with no pagination', async () => {
      // TODO: Implement test
      // Scenario: Search with no pagination
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with no pagination
      // Then: The result should show all leagues
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should handle search with empty search query', async () => {
      // TODO: Implement test
      // Scenario: Search with empty query
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with empty query
      // Then: The result should show all leagues
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should handle search with special characters', async () => {
      // TODO: Implement test
      // Scenario: Search with special characters
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with special characters
      // Then: The result should show search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should handle search with very long query', async () => {
      // TODO: Implement test
      // Scenario: Search with very long query
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with very long query
      // Then: The result should show search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });

    it('should handle search with unicode characters', async () => {
      // TODO: Implement test
      // Scenario: Search with unicode characters
      // Given: Leagues exist
      // When: SearchLeaguesUseCase.execute() is called with unicode characters
      // Then: The result should show search results
      // And: EventPublisher should emit LeaguesSearchedEvent
    });
  });

  describe('SearchLeaguesUseCase - Error Handling', () => {
    it('should handle invalid search query', async () => {
      // TODO: Implement test
      // Scenario: Invalid search query
      // Given: An invalid search query (e.g., null, undefined)
      // When: SearchLeaguesUseCase.execute() is called with invalid query
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });

    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: LeagueRepository throws an error during search
      // When: SearchLeaguesUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeagueRecommendationsUseCase - Success Path', () => {
    it('should retrieve league recommendations', async () => {
      // TODO: Implement test
      // Scenario: User views league recommendations
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called
      // Then: The result should show recommended leagues
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve personalized recommendations', async () => {
      // TODO: Implement test
      // Scenario: User views personalized recommendations
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with user context
      // Then: The result should show personalized recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations based on interests', async () => {
      // TODO: Implement test
      // Scenario: User views recommendations based on interests
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with interests
      // Then: The result should show interest-based recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations based on skill level', async () => {
      // TODO: Implement test
      // Scenario: User views recommendations based on skill level
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with skill level
      // Then: The result should show skill-based recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations based on location', async () => {
      // TODO: Implement test
      // Scenario: User views recommendations based on location
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with location
      // Then: The result should show location-based recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations based on friends', async () => {
      // TODO: Implement test
      // Scenario: User views recommendations based on friends
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with friends
      // Then: The result should show friend-based recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations based on history', async () => {
      // TODO: Implement test
      // Scenario: User views recommendations based on history
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with history
      // Then: The result should show history-based recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations with pagination', async () => {
      // TODO: Implement test
      // Scenario: User views recommendations with pagination
      // Given: Many leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with pagination
      // Then: The result should show paginated recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations with sorting', async () => {
      // TODO: Implement test
      // Scenario: User views recommendations with sorting
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with sort order
      // Then: The result should show sorted recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations with filters', async () => {
      // TODO: Implement test
      // Scenario: User views recommendations with filters
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with filters
      // Then: The result should show filtered recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations with refresh', async () => {
      // TODO: Implement test
      // Scenario: User refreshes recommendations
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with refresh
      // Then: The result should show refreshed recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations with explanation', async () => {
      // TODO: Implement test
      // Scenario: User views recommendations with explanation
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with explanation
      // Then: The result should show recommendations with explanation
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should retrieve recommendations with confidence score', async () => {
      // TODO: Implement test
      // Scenario: User views recommendations with confidence score
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with confidence score
      // Then: The result should show recommendations with confidence score
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });
  });

  describe('GetLeagueRecommendationsUseCase - Edge Cases', () => {
    it('should handle no recommendations', async () => {
      // TODO: Implement test
      // Scenario: No recommendations available
      // Given: No leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called
      // Then: The result should show empty recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should handle recommendations with no user context', async () => {
      // TODO: Implement test
      // Scenario: Recommendations with no user context
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with no user context
      // Then: The result should show generic recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should handle recommendations with no interests', async () => {
      // TODO: Implement test
      // Scenario: Recommendations with no interests
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with no interests
      // Then: The result should show generic recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should handle recommendations with no skill level', async () => {
      // TODO: Implement test
      // Scenario: Recommendations with no skill level
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with no skill level
      // Then: The result should show generic recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should handle recommendations with no location', async () => {
      // TODO: Implement test
      // Scenario: Recommendations with no location
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with no location
      // Then: The result should show generic recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should handle recommendations with no friends', async () => {
      // TODO: Implement test
      // Scenario: Recommendations with no friends
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with no friends
      // Then: The result should show generic recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });

    it('should handle recommendations with no history', async () => {
      // TODO: Implement test
      // Scenario: Recommendations with no history
      // Given: Leagues exist
      // When: GetLeagueRecommendationsUseCase.execute() is called with no history
      // Then: The result should show generic recommendations
      // And: EventPublisher should emit LeaguesRecommendationsAccessedEvent
    });
  });

  describe('GetLeagueRecommendationsUseCase - Error Handling', () => {
    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: LeagueRepository throws an error during query
      // When: GetLeagueRecommendationsUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetPopularLeaguesUseCase - Success Path', () => {
    it('should retrieve popular leagues', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called
      // Then: The result should show popular leagues
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues with pagination', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues with pagination
      // Given: Many leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with pagination
      // Then: The result should show paginated popular leagues
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues with sorting', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues with sorting
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with sort order
      // Then: The result should show sorted popular leagues
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues with filters', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues with filters
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with filters
      // Then: The result should show filtered popular leagues
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues by time period', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues by time period
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with time period
      // Then: The result should show popular leagues for that period
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues by category', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues by category
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with category
      // Then: The result should show popular leagues in that category
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues by region', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues by region
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with region
      // Then: The result should show popular leagues in that region
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues by game', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues by game
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with game
      // Then: The result should show popular leagues for that game
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues by skill level', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues by skill level
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with skill level
      // Then: The result should show popular leagues for that skill level
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues by size', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues by size
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with size
      // Then: The result should show popular leagues of that size
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues by activity', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues by activity
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with activity
      // Then: The result should show popular leagues with that activity
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues with trending', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues with trending
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with trending
      // Then: The result should show trending popular leagues
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues with hot', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues with hot
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with hot
      // Then: The result should show hot popular leagues
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should retrieve popular leagues with new', async () => {
      // TODO: Implement test
      // Scenario: User views popular leagues with new
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with new
      // Then: The result should show new popular leagues
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });
  });

  describe('GetPopularLeaguesUseCase - Edge Cases', () => {
    it('should handle no popular leagues', async () => {
      // TODO: Implement test
      // Scenario: No popular leagues available
      // Given: No leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called
      // Then: The result should show empty popular leagues
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should handle popular leagues with no time period', async () => {
      // TODO: Implement test
      // Scenario: Popular leagues with no time period
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with no time period
      // Then: The result should show popular leagues for all time
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should handle popular leagues with no category', async () => {
      // TODO: Implement test
      // Scenario: Popular leagues with no category
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with no category
      // Then: The result should show popular leagues across all categories
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should handle popular leagues with no region', async () => {
      // TODO: Implement test
      // Scenario: Popular leagues with no region
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with no region
      // Then: The result should show popular leagues across all regions
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should handle popular leagues with no game', async () => {
      // TODO: Implement test
      // Scenario: Popular leagues with no game
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with no game
      // Then: The result should show popular leagues across all games
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should handle popular leagues with no skill level', async () => {
      // TODO: Implement test
      // Scenario: Popular leagues with no skill level
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with no skill level
      // Then: The result should show popular leagues across all skill levels
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should handle popular leagues with no size', async () => {
      // TODO: Implement test
      // Scenario: Popular leagues with no size
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with no size
      // Then: The result should show popular leagues of all sizes
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });

    it('should handle popular leagues with no activity', async () => {
      // TODO: Implement test
      // Scenario: Popular leagues with no activity
      // Given: Leagues exist
      // When: GetPopularLeaguesUseCase.execute() is called with no activity
      // Then: The result should show popular leagues with all activity levels
      // And: EventPublisher should emit LeaguesPopularAccessedEvent
    });
  });

  describe('GetPopularLeaguesUseCase - Error Handling', () => {
    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: LeagueRepository throws an error during query
      // When: GetPopularLeaguesUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetFeaturedLeaguesUseCase - Success Path', () => {
    it('should retrieve featured leagues', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called
      // Then: The result should show featured leagues
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues with pagination', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues with pagination
      // Given: Many leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with pagination
      // Then: The result should show paginated featured leagues
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues with sorting', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues with sorting
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with sort order
      // Then: The result should show sorted featured leagues
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues with filters', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues with filters
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with filters
      // Then: The result should show filtered featured leagues
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues by category', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues by category
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with category
      // Then: The result should show featured leagues in that category
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues by region', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues by region
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with region
      // Then: The result should show featured leagues in that region
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues by game', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues by game
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with game
      // Then: The result should show featured leagues for that game
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues by skill level', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues by skill level
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with skill level
      // Then: The result should show featured leagues for that skill level
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues by size', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues by size
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with size
      // Then: The result should show featured leagues of that size
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues by activity', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues by activity
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with activity
      // Then: The result should show featured leagues with that activity
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues with editor picks', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues with editor picks
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with editor picks
      // Then: The result should show editor-picked featured leagues
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues with sponsor picks', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues with sponsor picks
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with sponsor picks
      // Then: The result should show sponsor-picked featured leagues
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should retrieve featured leagues with premium picks', async () => {
      // TODO: Implement test
      // Scenario: User views featured leagues with premium picks
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with premium picks
      // Then: The result should show premium-picked featured leagues
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });
  });

  describe('GetFeaturedLeaguesUseCase - Edge Cases', () => {
    it('should handle no featured leagues', async () => {
      // TODO: Implement test
      // Scenario: No featured leagues available
      // Given: No leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called
      // Then: The result should show empty featured leagues
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should handle featured leagues with no category', async () => {
      // TODO: Implement test
      // Scenario: Featured leagues with no category
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with no category
      // Then: The result should show featured leagues across all categories
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should handle featured leagues with no region', async () => {
      // TODO: Implement test
      // Scenario: Featured leagues with no region
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with no region
      // Then: The result should show featured leagues across all regions
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should handle featured leagues with no game', async () => {
      // TODO: Implement test
      // Scenario: Featured leagues with no game
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with no game
      // Then: The result should show featured leagues across all games
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should handle featured leagues with no skill level', async () => {
      // TODO: Implement test
      // Scenario: Featured leagues with no skill level
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with no skill level
      // Then: The result should show featured leagues across all skill levels
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should handle featured leagues with no size', async () => {
      // TODO: Implement test
      // Scenario: Featured leagues with no size
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with no size
      // Then: The result should show featured leagues of all sizes
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });

    it('should handle featured leagues with no activity', async () => {
      // TODO: Implement test
      // Scenario: Featured leagues with no activity
      // Given: Leagues exist
      // When: GetFeaturedLeaguesUseCase.execute() is called with no activity
      // Then: The result should show featured leagues with all activity levels
      // And: EventPublisher should emit LeaguesFeaturedAccessedEvent
    });
  });

  describe('GetFeaturedLeaguesUseCase - Error Handling', () => {
    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: LeagueRepository throws an error during query
      // When: GetFeaturedLeaguesUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesByCategoryUseCase - Success Path', () => {
    it('should retrieve leagues by category', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by category
      // Given: Leagues exist
      // When: GetLeaguesByCategoryUseCase.execute() is called with category
      // Then: The result should show leagues in that category
      // And: EventPublisher should emit LeaguesByCategoryAccessedEvent
    });

    it('should retrieve leagues by category with pagination', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by category with pagination
      // Given: Many leagues exist
      // When: GetLeaguesByCategoryUseCase.execute() is called with category and pagination
      // Then: The result should show paginated leagues
      // And: EventPublisher should emit LeaguesByCategoryAccessedEvent
    });

    it('should retrieve leagues by category with sorting', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by category with sorting
      // Given: Leagues exist
      // When: GetLeaguesByCategoryUseCase.execute() is called with category and sort order
      // Then: The result should show sorted leagues
      // And: EventPublisher should emit LeaguesByCategoryAccessedEvent
    });

    it('should retrieve leagues by category with filters', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by category with filters
      // Given: Leagues exist
      // When: GetLeaguesByCategoryUseCase.execute() is called with category and filters
      // Then: The result should show filtered leagues
      // And: EventPublisher should emit LeaguesByCategoryAccessedEvent
    });
  });

  describe('GetLeaguesByCategoryUseCase - Edge Cases', () => {
    it('should handle no leagues in category', async () => {
      // TODO: Implement test
      // Scenario: No leagues in category
      // Given: No leagues exist in the category
      // When: GetLeaguesByCategoryUseCase.execute() is called with category
      // Then: The result should show empty leagues
      // And: EventPublisher should emit LeaguesByCategoryAccessedEvent
    });

    it('should handle invalid category', async () => {
      // TODO: Implement test
      // Scenario: Invalid category
      // Given: An invalid category
      // When: GetLeaguesByCategoryUseCase.execute() is called with invalid category
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesByCategoryUseCase - Error Handling', () => {
    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: LeagueRepository throws an error during query
      // When: GetLeaguesByCategoryUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesByRegionUseCase - Success Path', () => {
    it('should retrieve leagues by region', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by region
      // Given: Leagues exist
      // When: GetLeaguesByRegionUseCase.execute() is called with region
      // Then: The result should show leagues in that region
      // And: EventPublisher should emit LeaguesByRegionAccessedEvent
    });

    it('should retrieve leagues by region with pagination', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by region with pagination
      // Given: Many leagues exist
      // When: GetLeaguesByRegionUseCase.execute() is called with region and pagination
      // Then: The result should show paginated leagues
      // And: EventPublisher should emit LeaguesByRegionAccessedEvent
    });

    it('should retrieve leagues by region with sorting', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by region with sorting
      // Given: Leagues exist
      // When: GetLeaguesByRegionUseCase.execute() is called with region and sort order
      // Then: The result should show sorted leagues
      // And: EventPublisher should emit LeaguesByRegionAccessedEvent
    });

    it('should retrieve leagues by region with filters', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by region with filters
      // Given: Leagues exist
      // When: GetLeaguesByRegionUseCase.execute() is called with region and filters
      // Then: The result should show filtered leagues
      // And: EventPublisher should emit LeaguesByRegionAccessedEvent
    });
  });

  describe('GetLeaguesByRegionUseCase - Edge Cases', () => {
    it('should handle no leagues in region', async () => {
      // TODO: Implement test
      // Scenario: No leagues in region
      // Given: No leagues exist in the region
      // When: GetLeaguesByRegionUseCase.execute() is called with region
      // Then: The result should show empty leagues
      // And: EventPublisher should emit LeaguesByRegionAccessedEvent
    });

    it('should handle invalid region', async () => {
      // TODO: Implement test
      // Scenario: Invalid region
      // Given: An invalid region
      // When: GetLeaguesByRegionUseCase.execute() is called with invalid region
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesByRegionUseCase - Error Handling', () => {
    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: LeagueRepository throws an error during query
      // When: GetLeaguesByRegionUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesByGameUseCase - Success Path', () => {
    it('should retrieve leagues by game', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by game
      // Given: Leagues exist
      // When: GetLeaguesByGameUseCase.execute() is called with game
      // Then: The result should show leagues for that game
      // And: EventPublisher should emit LeaguesByGameAccessedEvent
    });

    it('should retrieve leagues by game with pagination', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by game with pagination
      // Given: Many leagues exist
      // When: GetLeaguesByGameUseCase.execute() is called with game and pagination
      // Then: The result should show paginated leagues
      // And: EventPublisher should emit LeaguesByGameAccessedEvent
    });

    it('should retrieve leagues by game with sorting', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by game with sorting
      // Given: Leagues exist
      // When: GetLeaguesByGameUseCase.execute() is called with game and sort order
      // Then: The result should show sorted leagues
      // And: EventPublisher should emit LeaguesByGameAccessedEvent
    });

    it('should retrieve leagues by game with filters', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by game with filters
      // Given: Leagues exist
      // When: GetLeaguesByGameUseCase.execute() is called with game and filters
      // Then: The result should show filtered leagues
      // And: EventPublisher should emit LeaguesByGameAccessedEvent
    });
  });

  describe('GetLeaguesByGameUseCase - Edge Cases', () => {
    it('should handle no leagues for game', async () => {
      // TODO: Implement test
      // Scenario: No leagues for game
      // Given: No leagues exist for the game
      // When: GetLeaguesByGameUseCase.execute() is called with game
      // Then: The result should show empty leagues
      // And: EventPublisher should emit LeaguesByGameAccessedEvent
    });

    it('should handle invalid game', async () => {
      // TODO: Implement test
      // Scenario: Invalid game
      // Given: An invalid game
      // When: GetLeaguesByGameUseCase.execute() is called with invalid game
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesByGameUseCase - Error Handling', () => {
    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: LeagueRepository throws an error during query
      // When: GetLeaguesByGameUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesBySkillLevelUseCase - Success Path', () => {
    it('should retrieve leagues by skill level', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by skill level
      // Given: Leagues exist
      // When: GetLeaguesBySkillLevelUseCase.execute() is called with skill level
      // Then: The result should show leagues for that skill level
      // And: EventPublisher should emit LeaguesBySkillLevelAccessedEvent
    });

    it('should retrieve leagues by skill level with pagination', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by skill level with pagination
      // Given: Many leagues exist
      // When: GetLeaguesBySkillLevelUseCase.execute() is called with skill level and pagination
      // Then: The result should show paginated leagues
      // And: EventPublisher should emit LeaguesBySkillLevelAccessedEvent
    });

    it('should retrieve leagues by skill level with sorting', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by skill level with sorting
      // Given: Leagues exist
      // When: GetLeaguesBySkillLevelUseCase.execute() is called with skill level and sort order
      // Then: The result should show sorted leagues
      // And: EventPublisher should emit LeaguesBySkillLevelAccessedEvent
    });

    it('should retrieve leagues by skill level with filters', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by skill level with filters
      // Given: Leagues exist
      // When: GetLeaguesBySkillLevelUseCase.execute() is called with skill level and filters
      // Then: The result should show filtered leagues
      // And: EventPublisher should emit LeaguesBySkillLevelAccessedEvent
    });
  });

  describe('GetLeaguesBySkillLevelUseCase - Edge Cases', () => {
    it('should handle no leagues for skill level', async () => {
      // TODO: Implement test
      // Scenario: No leagues for skill level
      // Given: No leagues exist for the skill level
      // When: GetLeaguesBySkillLevelUseCase.execute() is called with skill level
      // Then: The result should show empty leagues
      // And: EventPublisher should emit LeaguesBySkillLevelAccessedEvent
    });

    it('should handle invalid skill level', async () => {
      // TODO: Implement test
      // Scenario: Invalid skill level
      // Given: An invalid skill level
      // When: GetLeaguesBySkillLevelUseCase.execute() is called with invalid skill level
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesBySkillLevelUseCase - Error Handling', () => {
    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: LeagueRepository throws an error during query
      // When: GetLeaguesBySkillLevelUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesBySizeUseCase - Success Path', () => {
    it('should retrieve leagues by size', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by size
      // Given: Leagues exist
      // When: GetLeaguesBySizeUseCase.execute() is called with size
      // Then: The result should show leagues of that size
      // And: EventPublisher should emit LeaguesBySizeAccessedEvent
    });

    it('should retrieve leagues by size with pagination', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by size with pagination
      // Given: Many leagues exist
      // When: GetLeaguesBySizeUseCase.execute() is called with size and pagination
      // Then: The result should show paginated leagues
      // And: EventPublisher should emit LeaguesBySizeAccessedEvent
    });

    it('should retrieve leagues by size with sorting', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by size with sorting
      // Given: Leagues exist
      // When: GetLeaguesBySizeUseCase.execute() is called with size and sort order
      // Then: The result should show sorted leagues
      // And: EventPublisher should emit LeaguesBySizeAccessedEvent
    });

    it('should retrieve leagues by size with filters', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by size with filters
      // Given: Leagues exist
      // When: GetLeaguesBySizeUseCase.execute() is called with size and filters
      // Then: The result should show filtered leagues
      // And: EventPublisher should emit LeaguesBySizeAccessedEvent
    });
  });

  describe('GetLeaguesBySizeUseCase - Edge Cases', () => {
    it('should handle no leagues for size', async () => {
      // TODO: Implement test
      // Scenario: No leagues for size
      // Given: No leagues exist for the size
      // When: GetLeaguesBySizeUseCase.execute() is called with size
      // Then: The result should show empty leagues
      // And: EventPublisher should emit LeaguesBySizeAccessedEvent
    });

    it('should handle invalid size', async () => {
      // TODO: Implement test
      // Scenario: Invalid size
      // Given: An invalid size
      // When: GetLeaguesBySizeUseCase.execute() is called with invalid size
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesBySizeUseCase - Error Handling', () => {
    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: LeagueRepository throws an error during query
      // When: GetLeaguesBySizeUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesByActivityUseCase - Success Path', () => {
    it('should retrieve leagues by activity', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by activity
      // Given: Leagues exist
      // When: GetLeaguesByActivityUseCase.execute() is called with activity
      // Then: The result should show leagues with that activity
      // And: EventPublisher should emit LeaguesByActivityAccessedEvent
    });

    it('should retrieve leagues by activity with pagination', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by activity with pagination
      // Given: Many leagues exist
      // When: GetLeaguesByActivityUseCase.execute() is called with activity and pagination
      // Then: The result should show paginated leagues
      // And: EventPublisher should emit LeaguesByActivityAccessedEvent
    });

    it('should retrieve leagues by activity with sorting', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by activity with sorting
      // Given: Leagues exist
      // When: GetLeaguesByActivityUseCase.execute() is called with activity and sort order
      // Then: The result should show sorted leagues
      // And: EventPublisher should emit LeaguesByActivityAccessedEvent
    });

    it('should retrieve leagues by activity with filters', async () => {
      // TODO: Implement test
      // Scenario: User views leagues by activity with filters
      // Given: Leagues exist
      // When: GetLeaguesByActivityUseCase.execute() is called with activity and filters
      // Then: The result should show filtered leagues
      // And: EventPublisher should emit LeaguesByActivityAccessedEvent
    });
  });

  describe('GetLeaguesByActivityUseCase - Edge Cases', () => {
    it('should handle no leagues for activity', async () => {
      // TODO: Implement test
      // Scenario: No leagues for activity
      // Given: No leagues exist for the activity
      // When: GetLeaguesByActivityUseCase.execute() is called with activity
      // Then: The result should show empty leagues
      // And: EventPublisher should emit LeaguesByActivityAccessedEvent
    });

    it('should handle invalid activity', async () => {
      // TODO: Implement test
      // Scenario: Invalid activity
      // Given: An invalid activity
      // When: GetLeaguesByActivityUseCase.execute() is called with invalid activity
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetLeaguesByActivityUseCase - Error Handling', () => {
    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: LeagueRepository throws an error during query
      // When: GetLeaguesByActivityUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });
});