public void PressureToChartShouldReturnList(int density)
        {
            List <WeatherMain> expecWeatherMain = new List <WeatherMain>();

            expecWeatherMain.Add(new WeatherMain()
            {
                Humidity       = 0,
                Pressure       = 0,
                Temperature    = 0,
                TemperatureMin = 0,
                TemperatureMax = 0,
            });
            expecWeatherMain.Add(new WeatherMain()
            {
                Humidity       = 0,
                Pressure       = 3,
                Temperature    = 0,
                TemperatureMin = 0,
                TemperatureMax = 0,
            });
            expecWeatherMain.Add(new WeatherMain()
            {
                Humidity       = 0,
                Pressure       = 4,
                Temperature    = 0,
                TemperatureMin = 0,
                TemperatureMax = 0,
            });
            expecWeatherMain.Add(new WeatherMain()
            {
                Humidity       = 0,
                Pressure       = 4,
                Temperature    = 0,
                TemperatureMin = 0,
                TemperatureMax = 0,
            });
            expecWeatherMain.Add(new WeatherMain()
            {
                Humidity       = 0,
                Pressure       = 4,
                Temperature    = 0,
                TemperatureMin = 0,
                TemperatureMax = 0,
            });
            expecWeatherMain.Add(new WeatherMain()
            {
                Humidity       = 0,
                Pressure       = 4,
                Temperature    = 0,
                TemperatureMin = 0,
                TemperatureMax = 0,
            });
            expecWeatherMain.Add(new WeatherMain()
            {
                Humidity       = 0,
                Pressure       = 4,
                Temperature    = 0,
                TemperatureMin = 0,
                TemperatureMax = 0,
            });

            List <ForecastEntity> expectedEntity = new List <ForecastEntity>();

            foreach (var weatherMain in expecWeatherMain)
            {
                expectedEntity.Add(new ForecastEntity()
                {
                    WeatherMain = weatherMain
                });
            }
            ModelsService models = new ModelsService();

            //Act
            ChartValues <double> result = models.PressureToChart(expectedEntity, density);

            //Assert
            Assert.Equal(result.Count, expecWeatherMain.Count / density);
        }