mirror of
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149 lines
4.5 KiB
Python
149 lines
4.5 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 unittest, 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", "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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test_file = self.tempfile("temp.tga")
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original_im.save(test_file, rle=rle)
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saved_im = Image.open(test_file)
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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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test_file = self.tempfile("temp.tga")
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# Save
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im.save(test_file)
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test_im = Image.open(test_file)
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self.assertEqual(test_im.size, (100, 100))
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# RGBA save
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im.convert("RGBA").save(test_file)
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test_im = Image.open(test_file)
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self.assertEqual(test_im.size, (100, 100))
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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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test_file = self.tempfile("temp.tga")
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# Save
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im.save(test_file)
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test_im = Image.open(test_file)
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self.assertEqual(test_im.size, (199, 199))
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# RGBA save
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im.convert("RGBA").save(test_file)
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test_im = Image.open(test_file)
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self.assertEqual(test_im.size, (199, 199))
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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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test_file = self.tempfile("temp.tga")
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im.save(test_file)
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test_im = Image.open(test_file)
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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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if __name__ == '__main__':
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unittest.main()
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