adapter tests

adapters/leaderboards/persistence/inmemory/InMemoryLeaderboardsRepository.test.ts

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+import { InMemoryLeaderboardsRepository } from './InMemoryLeaderboardsRepository';
+import { LeaderboardDriverData, LeaderboardTeamData } from '../../../../core/leaderboards/application/ports/LeaderboardsRepository';
+
+describe('InMemoryLeaderboardsRepository', () => {
+  let repository: InMemoryLeaderboardsRepository;
+
+  beforeEach(() => {
+    repository = new InMemoryLeaderboardsRepository();
+  });
+
+  describe('drivers', () => {
+    it('should return empty array when no drivers exist', async () => {
+      // When
+      const result = await repository.findAllDrivers();
+
+      // Then
+      expect(result).toEqual([]);
+    });
+
+    it('should add and find all drivers', async () => {
+      // Given
+      const driver: LeaderboardDriverData = {
+        id: 'd1',
+        name: 'Driver 1',
+        rating: 1500,
+        raceCount: 10,
+        teamId: 't1',
+        teamName: 'Team 1',
+      };
+      repository.addDriver(driver);
+
+      // When
+      const result = await repository.findAllDrivers();
+
+      // Then
+      expect(result).toEqual([driver]);
+    });
+
+    it('should find drivers by team id', async () => {
+      // Given
+      const d1: LeaderboardDriverData = { id: 'd1', name: 'D1', rating: 1500, raceCount: 10, teamId: 't1', teamName: 'T1' };
+      const d2: LeaderboardDriverData = { id: 'd2', name: 'D2', rating: 1400, raceCount: 5, teamId: 't2', teamName: 'T2' };
+      repository.addDriver(d1);
+      repository.addDriver(d2);
+
+      // When
+      const result = await repository.findDriversByTeamId('t1');
+
+      // Then
+      expect(result).toEqual([d1]);
+    });
+  });
+
+  describe('teams', () => {
+    it('should add and find all teams', async () => {
+      // Given
+      const team: LeaderboardTeamData = {
+        id: 't1',
+        name: 'Team 1',
+        rating: 3000,
+        memberCount: 2,
+        raceCount: 20,
+      };
+      repository.addTeam(team);
+
+      // When
+      const result = await repository.findAllTeams();
+
+      // Then
+      expect(result).toEqual([team]);
+    });
+  });
+});