public void CreateYAxisTexture()
{
_timeSpan = _dataPoints.Length;
_guiChartOptions = new GuiChartOptions(_axesNames, ChartType, ChartLines, TickMarks, Scale, _dataPoints, _timeSpan, RepDuration);
_guiChart = new GuiChart("Title", new Vector2(1024, 780), Vector2.Zero, _guiChartOptions);
Texture2D testing = _guiChart.CreateYAxisTitleTexture(_game, _contentManager, _spriteBatch);
FileStream fs = File.Open(@"c:\school\Chart_Y-Axis.png", FileMode.Create);
testing.SaveAsPng(fs, testing.Width, testing.Height);
fs.Close();
Assert.IsNotNull(testing);
Assert.Pass("GuiChart.CreateYAxisTitleTexture passed.");
}