public async Task GetBriefListAsync_WhenCalled_GetBriefListClubsFromDb() { const int seasonId = 1; var expectedClubs = new List <Club>() { new Club { Id = 1 }, new Club { Id = 2 }, new Club { Id = 3 }, }; _clubRepository.Setup(c => c.GetBriefListAsync(seasonId)).ReturnsAsync(expectedClubs); var result = await _clubService.GetBriefListAsync(seasonId); Assert.That(result, Is.Not.Null); Assert.That(result, Is.EqualTo(expectedClubs)); }