public void Test_ExportImage()
{
GraphVizProcessor gvp = new GraphVizProcessor();
gvp.DotCode = "digraph{a->b}";
gvp.GenerateGraph();
gvp.ExportImage(@".\external\testImage.png");
if (!File.Exists(@".\external\testImage.png"))
{
Assert.Fail("Exported image not found.");
}
}