def unittest(data_path, temp_path):
    import image
    e = 0.0000001
    # Load image
    img = image.Image("unittest/data/cat.pgm", copy_to_fb=True)

    # Load histogram
    with open("unittest/data/cat.csv", "r") as f:
        hist1 = [float(x) for x in f.read().split(',')]

    # Get histogram
    hist2 = img.get_histogram()

    # Compare
    for a, b in zip(hist1, hist2[0]):
        if abs(a-b) > e:
            return False

    return hist2.get_percentile(0.5)[0] == 96 and hist2.get_statistics()[0:] ==\
    (82, 96, 0, 59, 0, 255, 13, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)

@@ -517,17 +517,17 @@
 %5C%0A    (8
-2
+1
 , 96, 0,

Update unit-tests.