public void TestDeleteRankingForPlayer_ReturnsNoContent()
{
rankingController = new RankingController(mockRankingService.Object);
var deleteRankingForPlayerResult = rankingController.DeleteRankingForPlayer(rankingHelper.ranking.UserId);
NoContentResult result = deleteRankingForPlayerResult as NoContentResult;
Assert.NotNull(result);
Assert.AreEqual(204, result.StatusCode);
}