public void Calculates_Correct_Statistics()
        {
            var calculator = new ConcurrentChatStatisticsCalculator();
            var stats = calculator.CalculateConcurrentChatStatistics(Data.GetConcurrentChatCollection());

            Assert.AreEqual(stats, new ConcurrentChatStatistics
            {
                Maximum = 3,
                Mean = 1.618421,
                StandardDeviation = 0.606263
            });
        }
        public void Calculates_Correct_Statistics_Of_One_Chat()
        {
            var calculator = new ConcurrentChatStatisticsCalculator();
            var stats = calculator.CalculateConcurrentChatStatistics(new ChatCollection { Data.GetChatA() });

            Assert.AreEqual(stats,
                new ConcurrentChatStatistics
                {
                    Maximum = 1,
                    Mean = 1,
                    StandardDeviation = 0
                });
        }