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d50445ff30
Similar to the recent adoption of Black. isort is a Python utility to sort imports alphabetically and automatically separate into sections. By using isort, contributors can quickly and automatically conform to the projects style without thinking. Just let the tool do it. Uses the configuration recommended by the Black to avoid conflicts of style. Rewrite TestImageQt.test_deprecated to no rely on import order.
70 lines
2.7 KiB
Python
70 lines
2.7 KiB
Python
from PIL import Image
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from .helper import PillowTestCase, fromstring, tostring
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class TestImageDraft(PillowTestCase):
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def setUp(self):
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codecs = dir(Image.core)
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if "jpeg_encoder" not in codecs or "jpeg_decoder" not in codecs:
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self.skipTest("jpeg support not available")
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def draft_roundtrip(self, in_mode, in_size, req_mode, req_size):
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im = Image.new(in_mode, in_size)
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data = tostring(im, "JPEG")
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im = fromstring(data)
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im.draft(req_mode, req_size)
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return im
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def test_size(self):
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for in_size, req_size, out_size in [
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((435, 361), (2048, 2048), (435, 361)), # bigger
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((435, 361), (435, 361), (435, 361)), # same
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((128, 128), (64, 64), (64, 64)),
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((128, 128), (32, 32), (32, 32)),
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((128, 128), (16, 16), (16, 16)),
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# large requested width
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((435, 361), (218, 128), (435, 361)), # almost 2x
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((435, 361), (217, 128), (218, 181)), # more than 2x
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((435, 361), (109, 64), (218, 181)), # almost 4x
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((435, 361), (108, 64), (109, 91)), # more than 4x
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((435, 361), (55, 32), (109, 91)), # almost 8x
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((435, 361), (54, 32), (55, 46)), # more than 8x
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((435, 361), (27, 16), (55, 46)), # more than 16x
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# and vice versa
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((435, 361), (128, 181), (435, 361)), # almost 2x
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((435, 361), (128, 180), (218, 181)), # more than 2x
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((435, 361), (64, 91), (218, 181)), # almost 4x
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((435, 361), (64, 90), (109, 91)), # more than 4x
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((435, 361), (32, 46), (109, 91)), # almost 8x
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((435, 361), (32, 45), (55, 46)), # more than 8x
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((435, 361), (16, 22), (55, 46)), # more than 16x
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]:
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im = self.draft_roundtrip("L", in_size, None, req_size)
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im.load()
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self.assertEqual(im.size, out_size)
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def test_mode(self):
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for in_mode, req_mode, out_mode in [
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("RGB", "1", "RGB"),
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("RGB", "L", "L"),
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("RGB", "RGB", "RGB"),
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("RGB", "YCbCr", "YCbCr"),
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("L", "1", "L"),
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("L", "L", "L"),
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("L", "RGB", "L"),
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("L", "YCbCr", "L"),
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("CMYK", "1", "CMYK"),
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("CMYK", "L", "CMYK"),
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("CMYK", "RGB", "CMYK"),
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("CMYK", "YCbCr", "CMYK"),
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]:
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im = self.draft_roundtrip(in_mode, (64, 64), req_mode, None)
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im.load()
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self.assertEqual(im.mode, out_mode)
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def test_several_drafts(self):
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im = self.draft_roundtrip("L", (128, 128), None, (64, 64))
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im.draft(None, (64, 64))
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im.load()
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