Pillow/Tests/test_image_getbbox.py

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from .helper import PillowTestCase, hopper
from PIL import Image
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class TestImageGetBbox(PillowTestCase):
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def test_sanity(self):
bbox = hopper().getbbox()
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self.assertIsInstance(bbox, tuple)
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def test_bbox(self):
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# 8-bit mode
im = Image.new("L", (100, 100), 0)
self.assertIsNone(im.getbbox())
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im.paste(255, (10, 25, 90, 75))
self.assertEqual(im.getbbox(), (10, 25, 90, 75))
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im.paste(255, (25, 10, 75, 90))
self.assertEqual(im.getbbox(), (10, 10, 90, 90))
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im.paste(255, (-10, -10, 110, 110))
self.assertEqual(im.getbbox(), (0, 0, 100, 100))
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# 32-bit mode
im = Image.new("RGB", (100, 100), 0)
self.assertIsNone(im.getbbox())
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im.paste(255, (10, 25, 90, 75))
self.assertEqual(im.getbbox(), (10, 25, 90, 75))
im.paste(255, (25, 10, 75, 90))
self.assertEqual(im.getbbox(), (10, 10, 90, 90))
im.paste(255, (-10, -10, 110, 110))
self.assertEqual(im.getbbox(), (0, 0, 100, 100))