public void Start_TheGame_Score_ShouldBe_Zero_Zero() { // Arrange var service = new TennisService(); // Act Score score = service.Get(); // Assert Assert.IsNotNull(score); score.Player1.Id.Should().Be(1); score.Player1.Name.Should().Be("Nadal"); score.Player1.PlayerGamePoint.Should().Be(GamePoint.zero); score.Player2.Id.Should().Be(2); score.Player2.Name.Should().Be("Federer"); score.Player2.PlayerGamePoint.Should().Be(GamePoint.zero); }