public void GetAllUsersReturnsAllCreatedUsers() { const string username1 = "TestUser1"; const string username2 = "TestUser2"; var repository = new InMemoryUserRepository(); var createdUser1 = repository.CreateUser(username1); var createdUser2 = repository.CreateUser(username2); var allUsers = repository.GetAllUsers().ToList(); Assert.That(allUsers.Count, Is.EqualTo(2)); Assert.That(allUsers, Contains.Item(createdUser1)); Assert.That(allUsers, Contains.Item(createdUser2)); }