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https://github.com/python-pillow/Pillow.git
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4de5477b61
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:
if __name__ == '__main__':
unittest.main()
To every test file. It is simply noise.
The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
204 lines
6.4 KiB
Python
204 lines
6.4 KiB
Python
import os
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from glob import glob
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from itertools import product
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from .helper import PillowTestCase
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from PIL import Image
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_TGA_DIR = os.path.join("Tests", "images", "tga")
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_TGA_DIR_COMMON = os.path.join(_TGA_DIR, "common")
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class TestFileTga(PillowTestCase):
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_MODES = ("L", "LA", "P", "RGB", "RGBA")
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_ORIGINS = ("tl", "bl")
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_ORIGIN_TO_ORIENTATION = {
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"tl": 1,
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"bl": -1
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}
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def test_sanity(self):
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for mode in self._MODES:
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png_paths = glob(
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os.path.join(
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_TGA_DIR_COMMON, "*x*_{}.png".format(mode.lower())))
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for png_path in png_paths:
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reference_im = Image.open(png_path)
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self.assertEqual(reference_im.mode, mode)
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path_no_ext = os.path.splitext(png_path)[0]
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for origin, rle in product(self._ORIGINS, (True, False)):
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tga_path = "{}_{}_{}.tga".format(
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path_no_ext, origin, "rle" if rle else "raw")
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original_im = Image.open(tga_path)
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if rle:
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self.assertEqual(
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original_im.info["compression"], "tga_rle")
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self.assertEqual(
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original_im.info["orientation"],
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self._ORIGIN_TO_ORIENTATION[origin])
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if mode == "P":
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self.assertEqual(
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original_im.getpalette(),
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reference_im.getpalette())
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self.assert_image_equal(original_im, reference_im)
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# Generate a new test name every time so the
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# test will not fail with permission error
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# on Windows.
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out = self.tempfile("temp.tga")
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original_im.save(out, rle=rle)
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saved_im = Image.open(out)
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if rle:
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self.assertEqual(
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saved_im.info["compression"],
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original_im.info["compression"])
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self.assertEqual(
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saved_im.info["orientation"],
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original_im.info["orientation"])
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if mode == "P":
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self.assertEqual(
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saved_im.getpalette(),
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original_im.getpalette())
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self.assert_image_equal(saved_im, original_im)
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def test_id_field(self):
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# tga file with id field
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test_file = "Tests/images/tga_id_field.tga"
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# Act
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im = Image.open(test_file)
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# Assert
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self.assertEqual(im.size, (100, 100))
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def test_id_field_rle(self):
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# tga file with id field
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test_file = "Tests/images/rgb32rle.tga"
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# Act
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im = Image.open(test_file)
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# Assert
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self.assertEqual(im.size, (199, 199))
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def test_save(self):
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test_file = "Tests/images/tga_id_field.tga"
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im = Image.open(test_file)
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out = self.tempfile("temp.tga")
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# Save
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im.save(out)
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test_im = Image.open(out)
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self.assertEqual(test_im.size, (100, 100))
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self.assertEqual(test_im.info["id_section"], im.info["id_section"])
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# RGBA save
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im.convert("RGBA").save(out)
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test_im = Image.open(out)
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self.assertEqual(test_im.size, (100, 100))
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def test_save_id_section(self):
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test_file = "Tests/images/rgb32rle.tga"
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im = Image.open(test_file)
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out = self.tempfile("temp.tga")
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# Check there is no id section
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im.save(out)
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test_im = Image.open(out)
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self.assertNotIn("id_section", test_im.info)
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# Save with custom id section
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im.save(out, id_section=b"Test content")
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test_im = Image.open(out)
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self.assertEqual(test_im.info["id_section"], b"Test content")
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# Save with custom id section greater than 255 characters
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id_section = b"Test content" * 25
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self.assert_warning(UserWarning,
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lambda: im.save(out, id_section=id_section))
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test_im = Image.open(out)
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self.assertEqual(test_im.info["id_section"], id_section[:255])
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test_file = "Tests/images/tga_id_field.tga"
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im = Image.open(test_file)
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# Save with no id section
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im.save(out, id_section="")
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test_im = Image.open(out)
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self.assertNotIn("id_section", test_im.info)
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def test_save_orientation(self):
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test_file = "Tests/images/rgb32rle.tga"
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im = Image.open(test_file)
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self.assertEqual(im.info["orientation"], -1)
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out = self.tempfile("temp.tga")
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im.save(out, orientation=1)
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test_im = Image.open(out)
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self.assertEqual(test_im.info["orientation"], 1)
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def test_save_rle(self):
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test_file = "Tests/images/rgb32rle.tga"
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im = Image.open(test_file)
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self.assertEqual(im.info["compression"], "tga_rle")
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out = self.tempfile("temp.tga")
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# Save
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im.save(out)
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test_im = Image.open(out)
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self.assertEqual(test_im.size, (199, 199))
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self.assertEqual(test_im.info["compression"], "tga_rle")
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# Save without compression
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im.save(out, compression=None)
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test_im = Image.open(out)
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self.assertNotIn("compression", test_im.info)
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# RGBA save
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im.convert("RGBA").save(out)
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test_im = Image.open(out)
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self.assertEqual(test_im.size, (199, 199))
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test_file = "Tests/images/tga_id_field.tga"
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im = Image.open(test_file)
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self.assertNotIn("compression", im.info)
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# Save with compression
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im.save(out, compression="tga_rle")
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test_im = Image.open(out)
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self.assertEqual(test_im.info["compression"], "tga_rle")
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def test_save_l_transparency(self):
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# There are 559 transparent pixels in la.tga.
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num_transparent = 559
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in_file = "Tests/images/la.tga"
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im = Image.open(in_file)
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self.assertEqual(im.mode, "LA")
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self.assertEqual(
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im.getchannel("A").getcolors()[0][0], num_transparent)
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out = self.tempfile("temp.tga")
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im.save(out)
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test_im = Image.open(out)
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self.assertEqual(test_im.mode, "LA")
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self.assertEqual(
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test_im.getchannel("A").getcolors()[0][0], num_transparent)
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self.assert_image_equal(im, test_im)
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