public void Get_Player_By_Id() { Player createdPlayer = _playerGenerator.GetSinglePlayer(); string playerId = createdPlayer.Id; var playerMock = GetPlayerAppServiceMock(); playerMock.Setup(x => x.GetById(playerId)).Returns(createdPlayer); var _playerController = new PlayerController(playerMock.Object); Player newPlayer = _playerController.GetById(playerId); Assert.Equal(createdPlayer.Id, newPlayer.Id); Assert.Equal(createdPlayer.Name, newPlayer.Name); Assert.Equal(createdPlayer.Team, newPlayer.Team); }