def unittest(data_path, temp_path): import image img = image.Image(data_path + "/edges1.pgm", copy_to_fb=True) # Find edges img.find_edges(image.EDGE_CANNY, threshold=(50, 80)) # Verify edge detection produced output stats = img.difference(data_path + "/edges2.pgm").get_statistics() return stats.max() == 0 and stats.min() == 0