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added explicit test for autocontrast implementation - pixel value check

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This commit is contained in:
navneeth 2020-08-11 23:36:39 +09:00
parent cb26b4d40f
commit 4841bbe2a5
1 changed files with 8 additions and 2 deletions
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10
Tests/test_imageops.py
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@ -1,6 +1,6 @@
import pytest import pytest
from PIL import Image, ImageDraw, ImageOps, features from PIL import Image, ImageDraw, ImageOps, ImageStat, features
from .helper import ( from .helper import (
assert_image_equal, assert_image_equal,
@ -328,8 +328,12 @@ def test_autocontrast_mask_toy_input():
y1 = 3 * img.size[1] // 4 y1 = 3 * img.size[1] // 4
draw.rectangle((x0, y0, x1, y1), fill=255) draw.rectangle((x0, y0, x1, y1), fill=255)
assert ImageOps.autocontrast(img, mask=rect_mask) != ImageOps.autocontrast(img) result = ImageOps.autocontrast(img, mask=rect_mask)
result_nomask = ImageOps.autocontrast(img)
assert result != result_nomask
assert ImageStat.Stat(result, mask=rect_mask).median == [127]
assert ImageStat.Stat(result_nomask).median == [128]
def test_auto_contrast_mask_real_input(): def test_auto_contrast_mask_real_input():
# Test the autocontrast with a rectangular mask # Test the autocontrast with a rectangular mask
@ -345,3 +349,5 @@ def test_auto_contrast_mask_real_input():
result_nomask = ImageOps.autocontrast(img) result_nomask = ImageOps.autocontrast(img)
assert result_nomask != result assert result_nomask != result
assert ImageStat.Stat(result, mask=rect_mask).median == [195, 202, 184]
assert ImageStat.Stat(result_nomask).median == [119, 106, 79]