public void Remove_OneMatch_ShouldDecrementNumberOfMatches() { MatchManager matchManager = new MatchManager(); Match match1 = new Match(Guid.NewGuid().ToString()); Match match2 = new Match(Guid.NewGuid().ToString()); matchManager.Add(match1); matchManager.Add(match2); int countBeforeRemove = matchManager.Count; matchManager.Remove(match2.Id); Assert.Equal(countBeforeRemove - 1, matchManager.Count); }