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280 lines
7.5 KiB
Python
280 lines
7.5 KiB
Python
from helper import unittest, PillowTestCase, lena, py3
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from PIL import Image
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class TestFileTiff(PillowTestCase):
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def test_sanity(self):
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file = self.tempfile("temp.tif")
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lena("RGB").save(file)
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im = Image.open(file)
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im.load()
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self.assertEqual(im.mode, "RGB")
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self.assertEqual(im.size, (128, 128))
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self.assertEqual(im.format, "TIFF")
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lena("1").save(file)
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im = Image.open(file)
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lena("L").save(file)
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im = Image.open(file)
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lena("P").save(file)
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im = Image.open(file)
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lena("RGB").save(file)
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im = Image.open(file)
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lena("I").save(file)
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im = Image.open(file)
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def test_mac_tiff(self):
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# Read RGBa images from Mac OS X [@PIL136]
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file = "Tests/images/pil136.tiff"
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im = Image.open(file)
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self.assertEqual(im.mode, "RGBA")
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self.assertEqual(im.size, (55, 43))
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self.assertEqual(im.tile, [('raw', (0, 0, 55, 43), 8, ('RGBa', 0, 1))])
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im.load()
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def test_gimp_tiff(self):
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# Read TIFF JPEG images from GIMP [@PIL168]
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codecs = dir(Image.core)
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if "jpeg_decoder" not in codecs:
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self.skipTest("jpeg support not available")
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file = "Tests/images/pil168.tif"
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im = Image.open(file)
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self.assertEqual(im.mode, "RGB")
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self.assertEqual(im.size, (256, 256))
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self.assertEqual(
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im.tile, [
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('jpeg', (0, 0, 256, 64), 8, ('RGB', '')),
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('jpeg', (0, 64, 256, 128), 1215, ('RGB', '')),
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('jpeg', (0, 128, 256, 192), 2550, ('RGB', '')),
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('jpeg', (0, 192, 256, 256), 3890, ('RGB', '')),
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])
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im.load()
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def test_xyres_tiff(self):
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from PIL.TiffImagePlugin import X_RESOLUTION, Y_RESOLUTION
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file = "Tests/images/pil168.tif"
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im = Image.open(file)
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assert isinstance(im.tag.tags[X_RESOLUTION][0], tuple)
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assert isinstance(im.tag.tags[Y_RESOLUTION][0], tuple)
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# Try to read a file where X,Y_RESOLUTION are ints
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im.tag.tags[X_RESOLUTION] = (72,)
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im.tag.tags[Y_RESOLUTION] = (72,)
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im._setup()
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self.assertEqual(im.info['dpi'], (72., 72.))
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def test_little_endian(self):
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im = Image.open('Tests/images/16bit.cropped.tif')
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self.assertEqual(im.getpixel((0, 0)), 480)
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self.assertEqual(im.mode, 'I;16')
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b = im.tobytes()
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# Bytes are in image native order (little endian)
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if py3:
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self.assertEqual(b[0], ord(b'\xe0'))
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self.assertEqual(b[1], ord(b'\x01'))
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else:
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self.assertEqual(b[0], b'\xe0')
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self.assertEqual(b[1], b'\x01')
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def test_big_endian(self):
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im = Image.open('Tests/images/16bit.MM.cropped.tif')
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self.assertEqual(im.getpixel((0, 0)), 480)
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self.assertEqual(im.mode, 'I;16B')
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b = im.tobytes()
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# Bytes are in image native order (big endian)
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if py3:
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self.assertEqual(b[0], ord(b'\x01'))
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self.assertEqual(b[1], ord(b'\xe0'))
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else:
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self.assertEqual(b[0], b'\x01')
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self.assertEqual(b[1], b'\xe0')
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def test_12bit_rawmode(self):
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""" Are we generating the same interpretation
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of the image as Imagemagick is? """
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# Image.DEBUG = True
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im = Image.open('Tests/images/12bit.cropped.tif')
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# to make the target --
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# convert 12bit.cropped.tif -depth 16 tmp.tif
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# convert tmp.tif -evaluate RightShift 4 12in16bit2.tif
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# imagemagick will auto scale so that a 12bit FFF is 16bit FFF0,
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# so we need to unshift so that the integer values are the same.
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im2 = Image.open('Tests/images/12in16bit.tif')
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if Image.DEBUG:
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print (im.getpixel((0, 0)))
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print (im.getpixel((0, 1)))
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print (im.getpixel((0, 2)))
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print (im2.getpixel((0, 0)))
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print (im2.getpixel((0, 1)))
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print (im2.getpixel((0, 2)))
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self.assert_image_equal(im, im2)
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def test_32bit_float(self):
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# Issue 614, specific 32 bit float format
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path = 'Tests/images/10ct_32bit_128.tiff'
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im = Image.open(path)
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im.load()
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self.assertEqual(im.getpixel((0, 0)), -0.4526388943195343)
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self.assertEqual(
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im.getextrema(), (-3.140936851501465, 3.140684127807617))
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def test___str__(self):
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# Arrange
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file = "Tests/images/pil136.tiff"
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im = Image.open(file)
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# Act
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ret = str(im.ifd)
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# Assert
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self.assertIsInstance(ret, str)
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self.assertEqual(
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ret,
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'{256: (55,), 257: (43,), 258: (8, 8, 8, 8), 259: (1,), '
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'262: (2,), 296: (2,), 273: (8,), 338: (1,), 277: (4,), '
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'279: (9460,), 282: ((720000, 10000),), '
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'283: ((720000, 10000),), 284: (1,)}')
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def test__delitem__(self):
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# Arrange
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file = "Tests/images/pil136.tiff"
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im = Image.open(file)
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len_before = len(im.ifd.as_dict())
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# Act
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del im.ifd[256]
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# Assert
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len_after = len(im.ifd.as_dict())
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self.assertEqual(len_before, len_after + 1)
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def test_load_byte(self):
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# Arrange
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from PIL import TiffImagePlugin
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ifd = TiffImagePlugin.ImageFileDirectory()
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data = b"abc"
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# Act
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ret = ifd.load_byte(data)
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# Assert
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self.assertEqual(ret, b"abc")
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def test_load_string(self):
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# Arrange
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from PIL import TiffImagePlugin
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ifd = TiffImagePlugin.ImageFileDirectory()
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data = b"abc\0"
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# Act
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ret = ifd.load_string(data)
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# Assert
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self.assertEqual(ret, "abc")
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def test_load_float(self):
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# Arrange
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from PIL import TiffImagePlugin
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ifd = TiffImagePlugin.ImageFileDirectory()
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data = b"abcdabcd"
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# Act
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ret = ifd.load_float(data)
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# Assert
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self.assertEqual(ret, (1.6777999408082104e+22, 1.6777999408082104e+22))
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def test_load_double(self):
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# Arrange
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from PIL import TiffImagePlugin
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ifd = TiffImagePlugin.ImageFileDirectory()
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data = b"abcdefghabcdefgh"
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# Act
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ret = ifd.load_double(data)
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# Assert
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self.assertEqual(ret, (8.540883223036124e+194, 8.540883223036124e+194))
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def test_seek(self):
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# Arrange
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file = "Tests/images/pil136.tiff"
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im = Image.open(file)
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# Act
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im.seek(-1)
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# Assert
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self.assertEqual(im.tell(), 0)
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def test_seek_eof(self):
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# Arrange
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file = "Tests/images/pil136.tiff"
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im = Image.open(file)
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self.assertEqual(im.tell(), 0)
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# Act / Assert
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self.assertRaises(EOFError, lambda: im.seek(1))
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def test__cvt_res_int(self):
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# Arrange
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from PIL.TiffImagePlugin import _cvt_res
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value = 34
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# Act
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ret = _cvt_res(value)
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# Assert
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self.assertEqual(ret, (34, 1))
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def test__cvt_res_float(self):
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# Arrange
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from PIL.TiffImagePlugin import _cvt_res
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value = 22.3
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# Act
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ret = _cvt_res(value)
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# Assert
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self.assertEqual(ret, (1461452, 65536))
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def test__cvt_res_sequence(self):
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# Arrange
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from PIL.TiffImagePlugin import _cvt_res
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value = [0, 1]
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# Act
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ret = _cvt_res(value)
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# Assert
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self.assertEqual(ret, [0, 1])
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if __name__ == '__main__':
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unittest.main()
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# End of file
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