baf78fc04a
we were adding up to two bytes of null to the end of base64-encoded binary data due to a signed/unsigned mixup add a test for this, plus a test for vips file format
329 lines
12 KiB
Python
Executable File
329 lines
12 KiB
Python
Executable File
#!/usr/bin/python
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from __future__ import division
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import unittest
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import math
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import os
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#import logging
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#logging.basicConfig(level = logging.DEBUG)
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from gi.repository import Vips
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Vips.leak_set(True)
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# an expanding zip ... if either of the args is not a list, duplicate it down
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# the other
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def zip_expand(x, y):
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if isinstance(x, list) and isinstance(y, list):
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return list(zip(x, y))
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elif isinstance(x, list):
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return [[i, y] for i in x]
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elif isinstance(y, list):
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return [[x, j] for j in y]
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else:
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return [[x, y]]
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class TestForeign(unittest.TestCase):
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# test a pair of things which can be lists for approx. equality
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def assertAlmostEqualObjects(self, a, b, places = 4, msg = ''):
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#print 'assertAlmostEqualObjects %s = %s' % (a, b)
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for x, y in zip_expand(a, b):
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self.assertAlmostEqual(x, y, places = places, msg = msg)
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def setUp(self):
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self.matlab_file = "images/sample.mat"
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self.jpeg_file = "images/IMG_4618.jpg"
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self.png_file = "images/sample.png"
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self.tiff_file = "images/sample.tif"
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self.profile_file = "images/sRGB.icm"
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self.analyze_file = "images/t00740_tr1_segm.hdr"
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self.gif_file = "images/cramps.gif"
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self.webp_file = "images/1.webp"
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self.exr_file = "images/sample.exr"
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self.fits_file = "images/WFPC2u5780205r_c0fx.fits"
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self.openslide_file = "images/CMU-1-Small-Region.svs"
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self.colour = Vips.Image.jpegload(self.jpeg_file)
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self.mono = self.colour.extract_band(1)
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self.rad = self.colour.float2rad()
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self.cmyk = self.colour.bandjoin(self.mono)
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self.cmyk = self.cmyk.copy(interpretation = Vips.Interpretation.CMYK)
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im = Vips.Image.new_from_file(self.gif_file)
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# some libMagick will load this mono image as RGB, some as mono ... test
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# band 0 to be safe
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self.onebit = im[0] > 128
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# we have test files for formats which have a clear standard
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def file_loader(self, loader, test_file, validate):
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im = Vips.call(loader, test_file)
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validate(self, im)
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im = Vips.Image.new_from_file(test_file)
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validate(self, im)
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def buffer_loader(self, loader, test_file, validate):
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with open(test_file, 'rb') as f:
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buf = f.read()
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im = Vips.call(loader, buf)
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validate(self, im)
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im = Vips.Image.new_from_buffer(buf, "")
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validate(self, im)
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def save_load(self, format, im):
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x = Vips.Image.new_temp_file(format)
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im.write(x)
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self.assertEqual(im.width, x.width)
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self.assertEqual(im.height, x.height)
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self.assertEqual(im.bands, x.bands)
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max_diff = (im - x).abs().max()
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self.assertEqual(max_diff, 0)
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def save_load_file(self, filename, options, im, thresh):
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# yuk!
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# but we can't set format parameters for Vips.Image.new_temp_file()
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im.write_to_file(filename + options)
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x = Vips.Image.new_from_file(filename)
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self.assertEqual(im.width, x.width)
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self.assertEqual(im.height, x.height)
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self.assertEqual(im.bands, x.bands)
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max_diff = (im - x).abs().max()
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self.assertTrue(max_diff <= thresh)
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x = None
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os.unlink(filename)
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def save_load_buffer(self, saver, loader, im, max_diff = 0):
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buf = Vips.call(saver, im)
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x = Vips.call(loader, buf)
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self.assertEqual(im.width, x.width)
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self.assertEqual(im.height, x.height)
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self.assertEqual(im.bands, x.bands)
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self.assertLessEqual((im - x).abs().max(), max_diff)
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def test_vips(self):
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self.save_load_file("test.v", "", self.colour, 0)
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# check we can save and restore metadata
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self.colour.write_to_file("test.v")
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x = Vips.Image.new_from_file("test.v")
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before_exif = self.colour.get_value("exif-data")
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after_exif = x.get_value("exif-data")
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self.assertEqual(len(before_exif), len(after_exif))
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for i in range(len(before_exif)):
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self.assertEqual(before_exif[i], after_exif[i])
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x = None
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os.unlink("test.v")
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def test_jpeg(self):
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x = Vips.type_find("VipsForeign", "jpegload")
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if not x.is_instantiatable():
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print("no jpeg support in this vips, skipping test")
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return
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def jpeg_valid(self, im):
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a = im(10, 10)
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self.assertAlmostEqualObjects(a, [6, 5, 3])
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profile = im.get_value("icc-profile-data")
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self.assertEqual(len(profile), 1352)
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self.assertEqual(im.width, 1024)
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self.assertEqual(im.height, 768)
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self.assertEqual(im.bands, 3)
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self.file_loader("jpegload", self.jpeg_file, jpeg_valid)
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self.buffer_loader("jpegload_buffer", self.jpeg_file, jpeg_valid)
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self.save_load_buffer("jpegsave_buffer", "jpegload_buffer", self.colour,
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60)
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self.save_load("%s.jpg", self.mono)
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self.save_load("%s.jpg", self.colour)
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def test_png(self):
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x = Vips.type_find("VipsForeign", "pngload")
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if not x.is_instantiatable():
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print("no png support in this vips, skipping test")
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return
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def png_valid(self, im):
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a = im(10, 10)
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self.assertAlmostEqualObjects(a, [38671.0, 33914.0, 26762.0])
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self.assertEqual(im.width, 290)
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self.assertEqual(im.height, 442)
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self.assertEqual(im.bands, 3)
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self.file_loader("pngload", self.png_file, png_valid)
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self.buffer_loader("pngload_buffer", self.png_file, png_valid)
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self.save_load_buffer("pngsave_buffer", "pngload_buffer", self.colour)
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self.save_load("%s.png", self.mono)
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self.save_load("%s.png", self.colour)
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def test_tiff(self):
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x = Vips.type_find("VipsForeign", "tiffload")
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if not x.is_instantiatable():
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print("no tiff support in this vips, skipping test")
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return
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def tiff_valid(self, im):
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a = im(10, 10)
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self.assertAlmostEqualObjects(a, [38671.0, 33914.0, 26762.0])
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self.assertEqual(im.width, 290)
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self.assertEqual(im.height, 442)
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self.assertEqual(im.bands, 3)
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self.file_loader("tiffload", self.tiff_file, tiff_valid)
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self.buffer_loader("tiffload_buffer", self.tiff_file, tiff_valid)
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self.save_load("%s.tif", self.mono)
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self.save_load("%s.tif", self.colour)
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self.save_load("%s.tif", self.cmyk)
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self.save_load("%s.tif", self.onebit)
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self.save_load("%s.tif[squash]", self.onebit)
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self.save_load("%s.tif[miniswhite]", self.onebit)
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self.save_load("%s.tif[squash,miniswhite]", self.onebit)
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self.save_load_file("test.tif", "[tile]", self.colour, 0)
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self.save_load_file("test.tif", "[tile,pyramid]", self.colour, 0)
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self.save_load_file("test.tif",
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"[tile,pyramid,compression=jpeg]", self.colour, 0)
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self.save_load_file("test.tif", "[bigtiff]", self.colour, 0)
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self.save_load_file("test.tif", "[compression=jpeg]", self.colour, 10)
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self.save_load_file("test.tif",
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"[tile,tile-width=256]", self.colour, 10)
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def test_magickload(self):
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x = Vips.type_find("VipsForeign", "magickload")
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if not x.is_instantiatable():
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print("no magick support in this vips, skipping test")
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return
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def gif_valid(self, im):
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a = im(10, 10)
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# some libMagick produce an RGB for this image, some a mono
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if len(a) > 1:
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self.assertAlmostEqual(a, [33, 33, 33])
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self.assertEqual(im.bands, 3)
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else:
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self.assertAlmostEqual(a, [33])
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self.assertEqual(im.bands, 1)
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self.assertEqual(im.width, 159)
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self.assertEqual(im.height, 203)
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self.file_loader("magickload", self.gif_file, gif_valid)
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self.buffer_loader("magickload_buffer", self.gif_file, gif_valid)
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def test_webp(self):
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x = Vips.type_find("VipsForeign", "webpload")
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if not x.is_instantiatable():
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print("no webp support in this vips, skipping test")
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return
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def webp_valid(self, im):
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a = im(10, 10)
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self.assertAlmostEqualObjects(a, [71, 166, 236])
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self.assertEqual(im.width, 550)
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self.assertEqual(im.height, 368)
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self.assertEqual(im.bands, 3)
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self.file_loader("webpload", self.webp_file, webp_valid)
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self.buffer_loader("webpload_buffer", self.webp_file, webp_valid)
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self.save_load_buffer("webpsave_buffer", "webpload_buffer", self.colour,
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50)
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self.save_load("%s.webp", self.colour)
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def test_analyzeload(self):
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def analyze_valid(self, im):
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a = im(10, 10)
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self.assertAlmostEqual(a[0], 3335)
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self.assertEqual(im.width, 128)
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self.assertEqual(im.height, 8064)
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self.assertEqual(im.bands, 1)
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self.file_loader("analyzeload", self.analyze_file, analyze_valid)
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def test_matload(self):
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x = Vips.type_find("VipsForeign", "matload")
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if not x.is_instantiatable():
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print("no matlab support in this vips, skipping test")
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return
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def matlab_valid(self, im):
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a = im(10, 10)
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self.assertAlmostEqualObjects(a, [38671.0, 33914.0, 26762.0])
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self.assertEqual(im.width, 290)
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self.assertEqual(im.height, 442)
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self.assertEqual(im.bands, 3)
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self.file_loader("matload", self.matlab_file, matlab_valid)
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def test_openexrload(self):
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x = Vips.type_find("VipsForeign", "openexrload")
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if not x.is_instantiatable():
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print("no openexr support in this vips, skipping test")
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return
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def exr_valid(self, im):
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a = im(10, 10)
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self.assertAlmostEqualObjects(a, [0.124512, 0.159668,
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0.040375, 1.0],
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places = 5)
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self.assertEqual(im.width, 610)
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self.assertEqual(im.height, 406)
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self.assertEqual(im.bands, 4)
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self.file_loader("openexrload", self.exr_file, exr_valid)
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def test_fitsload(self):
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x = Vips.type_find("VipsForeign", "fitsload")
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if not x.is_instantiatable():
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print("no fits support in this vips, skipping test")
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return
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def fits_valid(self, im):
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a = im(10, 10)
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self.assertAlmostEqualObjects(a, [-0.165013, -0.148553, 1.09122,
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-0.942242],
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places = 5)
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self.assertEqual(im.width, 200)
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self.assertEqual(im.height, 200)
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self.assertEqual(im.bands, 4)
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self.file_loader("fitsload", self.fits_file, fits_valid)
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self.save_load("%s.fits", self.mono)
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def test_openslideload(self):
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x = Vips.type_find("VipsForeign", "openslideload")
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if not x.is_instantiatable():
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print("no openslide support in this vips, skipping test")
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return
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def openslide_valid(self, im):
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a = im(10, 10)
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self.assertAlmostEqualObjects(a, [244, 250, 243, 255])
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self.assertEqual(im.width, 2220)
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self.assertEqual(im.height, 2967)
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self.assertEqual(im.bands, 4)
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self.file_loader("openslideload", self.openslide_file, openslide_valid)
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def test_csv(self):
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self.save_load("%s.csv", self.mono)
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def test_matrix(self):
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self.save_load("%s.mat", self.mono)
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def test_ppm(self):
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self.save_load("%s.ppm", self.mono)
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self.save_load("%s.ppm", self.colour)
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def test_rad(self):
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self.save_load("%s.hdr", self.colour)
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if __name__ == '__main__':
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unittest.main()
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