public void NightFilter()
{
//Get a real image to test the method instead of using a new empty bitmap !
Bitmap bitmap = Resources.No_filter;
Bitmap resultInterf = null;
BusinessLayer business = new BusinessLayer(imageInterface, filterInterface, edgeDetectionInterface);
filterInterface.nightFilter(bitmap).Returns<Bitmap>(resultInterf);
business.applyNightFilter(bitmap);
Assert.AreEqual(business.getFilteredBitmap(),resultInterf);
}
//Method to apply the Night Filter
public Bitmap applyNightFilter(Bitmap sourceBitmap)
{
filteredBitmap = filtersInterface.nightFilter(sourceBitmap);
return(filteredBitmap);
}