#!/usr/bin/python
# vim: set fileencoding=utf-8 :
from __future__ import division
import unittest
import math
import os
import shutil
from tempfile import NamedTemporaryFile
#import logging
#logging.basicConfig(level = logging.DEBUG)
import gi
gi.require_version('Vips', '8.0')
from gi.repository import Vips
from gi.repository import GObject
Vips.leak_set(True)
# an expanding zip ... if either of the args is not a list, duplicate it down
# the other
def zip_expand(x, y):
if isinstance(x, list) and isinstance(y, list):
return list(zip(x, y))
elif isinstance(x, list):
return [[i, y] for i in x]
elif isinstance(y, list):
return [[x, j] for j in y]
else:
return [[x, y]]
class TestForeign(unittest.TestCase):
# test a pair of things which can be lists for approx. equality
def assertAlmostEqualObjects(self, a, b, places = 4, msg = ''):
#print 'assertAlmostEqualObjects %s = %s' % (a, b)
for x, y in zip_expand(a, b):
self.assertAlmostEqual(x, y, places = places, msg = msg)
def setUp(self):
self.matlab_file = "images/sample.mat"
self.jpeg_file = "images/йцук.jpg"
self.png_file = "images/sample.png"
self.tiff_file = "images/sample.tif"
self.ome_file = "images/multi-channel-z-series.ome.tif"
self.profile_file = "images/sRGB.icm"
self.analyze_file = "images/t00740_tr1_segm.hdr"
self.gif_file = "images/cramps.gif"
self.webp_file = "images/1.webp"
self.exr_file = "images/sample.exr"
self.fits_file = "images/WFPC2u5780205r_c0fx.fits"
self.openslide_file = "images/CMU-1-Small-Region.svs"
self.pdf_file = "images/ISO_12233-reschart.pdf"
self.cmyk_pdf_file = "images/cmyktest.pdf"
self.svg_file = "images/vips-profile.svg"
self.svgz_file = "images/vips-profile.svgz"
self.svg_gz_file = "images/vips-profile.svg.gz"
self.gif_anim_file = "images/cogs.gif"
self.dicom_file = "images/dicom_test_image.dcm"
self.colour = Vips.Image.jpegload(self.jpeg_file)
self.mono = self.colour.extract_band(1)
# we remove the ICC profile: the RGB one will no longer be appropriate
self.mono.remove("icc-profile-data")
self.rad = self.colour.float2rad()
self.rad.remove("icc-profile-data")
self.cmyk = self.colour.bandjoin(self.mono)
self.cmyk = self.cmyk.copy(interpretation = Vips.Interpretation.CMYK)
self.cmyk.remove("icc-profile-data")
im = Vips.Image.new_from_file(self.gif_file)
self.onebit = im > 128
# we have test files for formats which have a clear standard
def file_loader(self, loader, test_file, validate):
im = Vips.call(loader, test_file)
validate(self, im)
im = Vips.Image.new_from_file(test_file)
validate(self, im)
def buffer_loader(self, loader, test_file, validate):
with open(test_file, 'rb') as f:
buf = f.read()
im = Vips.call(loader, buf)
validate(self, im)
im = Vips.Image.new_from_buffer(buf, "")
validate(self, im)
def save_load(self, format, im):
x = Vips.Image.new_temp_file(format)
im.write(x)
self.assertEqual(im.width, x.width)
self.assertEqual(im.height, x.height)
self.assertEqual(im.bands, x.bands)
max_diff = (im - x).abs().max()
self.assertEqual(max_diff, 0)
def save_load_file(self, filename, options, im, thresh):
# yuk!
# but we can't set format parameters for Vips.Image.new_temp_file()
im.write_to_file(filename + options)
x = Vips.Image.new_from_file(filename)
self.assertEqual(im.width, x.width)
self.assertEqual(im.height, x.height)
self.assertEqual(im.bands, x.bands)
max_diff = (im - x).abs().max()
self.assertTrue(max_diff <= thresh)
x = None
os.unlink(filename)
def save_load_buffer(self, saver, loader, im, max_diff = 0):
buf = Vips.call(saver, im)
x = Vips.call(loader, buf)
self.assertEqual(im.width, x.width)
self.assertEqual(im.height, x.height)
self.assertEqual(im.bands, x.bands)
self.assertLessEqual((im - x).abs().max(), max_diff)
def save_buffer_tempfile(self, saver, suf, im, max_diff = 0):
buf = Vips.call(saver, im)
f = NamedTemporaryFile(suffix=suf, delete=False)
f.write(buf)
f.close()
x = Vips.Image.new_from_file(f.name)
self.assertEqual(im.width, x.width)
self.assertEqual(im.height, x.height)
self.assertEqual(im.bands, x.bands)
self.assertLessEqual((im - x).abs().max(), max_diff)
os.unlink(f.name)
def test_vips(self):
self.save_load_file("test.v", "", self.colour, 0)
# check we can save and restore metadata
self.colour.write_to_file("test.v")
x = Vips.Image.new_from_file("test.v")
before_exif = self.colour.get_value("exif-data")
after_exif = x.get_value("exif-data")
self.assertEqual(len(before_exif), len(after_exif))
for i in range(len(before_exif)):
self.assertEqual(before_exif[i], after_exif[i])
x = None
os.unlink("test.v")
def test_jpeg(self):
x = Vips.type_find("VipsForeign", "jpegload")
if not x.is_instantiatable():
print("no jpeg support in this vips, skipping test")
return
def jpeg_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [6, 5, 3])
profile = im.get_value("icc-profile-data")
self.assertEqual(len(profile), 1352)
self.assertEqual(im.width, 1024)
self.assertEqual(im.height, 768)
self.assertEqual(im.bands, 3)
self.file_loader("jpegload", self.jpeg_file, jpeg_valid)
self.buffer_loader("jpegload_buffer", self.jpeg_file, jpeg_valid)
self.save_load_buffer("jpegsave_buffer", "jpegload_buffer", self.colour,
60)
self.save_load("%s.jpg", self.mono)
self.save_load("%s.jpg", self.colour)
# see if we have exif parsing: our test image has this field
x = Vips.Image.new_from_file(self.jpeg_file)
if x.get_typeof("exif-ifd0-Orientation") != GObject.TYPE_INVALID:
# we need a copy of the image to set the new metadata on
# otherwise we get caching problems
x = Vips.Image.new_from_file(self.jpeg_file)
x = x.copy()
x.set_value("orientation", 2)
x.write_to_file("test.jpg")
x = Vips.Image.new_from_file("test.jpg")
y = x.get_value("orientation")
self.assertEqual(y, 2)
os.unlink("test.jpg")
x = Vips.Image.new_from_file(self.jpeg_file)
x = x.copy()
x.set_value("orientation", 2)
x.write_to_file("test-12.jpg")
x = Vips.Image.new_from_file("test-12.jpg")
y = x.get_value("orientation")
self.assertEqual(y, 2)
x.remove("orientation")
x.write_to_file("test-13.jpg")
x = Vips.Image.new_from_file("test-13.jpg")
y = x.get_value("orientation")
self.assertEqual(y, 1)
os.unlink("test-12.jpg")
os.unlink("test-13.jpg")
x = Vips.Image.new_from_file(self.jpeg_file)
x = x.copy()
x.set_value("orientation", 6)
x.write_to_file("test-14.jpg")
x1 = Vips.Image.new_from_file("test-14.jpg")
x2 = Vips.Image.new_from_file("test-14.jpg", autorotate = True)
self.assertEqual(x1.width, x2.height)
self.assertEqual(x1.height, x2.width)
os.unlink("test-14.jpg")
def test_png(self):
x = Vips.type_find("VipsForeign", "pngload")
if not x.is_instantiatable():
print("no png support in this vips, skipping test")
return
def png_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [38671.0, 33914.0, 26762.0])
self.assertEqual(im.width, 290)
self.assertEqual(im.height, 442)
self.assertEqual(im.bands, 3)
self.file_loader("pngload", self.png_file, png_valid)
self.buffer_loader("pngload_buffer", self.png_file, png_valid)
self.save_load_buffer("pngsave_buffer", "pngload_buffer", self.colour)
self.save_load("%s.png", self.mono)
self.save_load("%s.png", self.colour)
def test_tiff(self):
x = Vips.type_find("VipsForeign", "tiffload")
if not x.is_instantiatable():
print("no tiff support in this vips, skipping test")
return
def tiff_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [38671.0, 33914.0, 26762.0])
self.assertEqual(im.width, 290)
self.assertEqual(im.height, 442)
self.assertEqual(im.bands, 3)
self.file_loader("tiffload", self.tiff_file, tiff_valid)
self.buffer_loader("tiffload_buffer", self.tiff_file, tiff_valid)
self.save_load_buffer("tiffsave_buffer", "tiffload_buffer", self.colour)
self.save_load("%s.tif", self.mono)
self.save_load("%s.tif", self.colour)
self.save_load("%s.tif", self.cmyk)
self.save_load("%s.tif", self.onebit)
self.save_load_file("test-1.tif", "[squash]", self.onebit, 0)
self.save_load_file("test-2.tif", "[miniswhite]", self.onebit, 0)
self.save_load_file("test-3.tif", "[squash,miniswhite]", self.onebit, 0)
self.save_load_file("test-4.tif",
"[profile=images/sRGB.icm]",
self.colour, 0)
self.save_load_file("test-5.tif", "[tile]", self.colour, 0)
self.save_load_file("test-6.tif", "[tile,pyramid]", self.colour, 0)
self.save_load_file("test-7.tif",
"[tile,pyramid,compression=jpeg]", self.colour, 60)
self.save_load_file("test-8.tif", "[bigtiff]", self.colour, 0)
self.save_load_file("test-9.tif", "[compression=jpeg]", self.colour, 60)
self.save_load_file("test-10.tif",
"[tile,tile-width=256]", self.colour, 10)
# we need a copy of the image to set the new metadata on
# otherwise we get caching problems
x = Vips.Image.new_from_file(self.tiff_file)
x = x.copy()
x.set_value("orientation", 2)
x.write_to_file("test-11.tif")
x = Vips.Image.new_from_file("test-11.tif")
y = x.get_value("orientation")
self.assertEqual(y, 2)
os.unlink("test-11.tif")
# we need a copy of the image to set the new metadata on
# otherwise we get caching problems
x = Vips.Image.new_from_file(self.tiff_file)
x = x.copy()
x.set_value("orientation", 2)
x.write_to_file("test-12.tif")
x = Vips.Image.new_from_file("test-12.tif")
y = x.get_value("orientation")
self.assertEqual(y, 2)
x.remove("orientation")
x.write_to_file("test-13.tif")
x = Vips.Image.new_from_file("test-13.tif")
y = x.get_value("orientation")
self.assertEqual(y, 1)
os.unlink("test-12.tif")
os.unlink("test-13.tif")
x = Vips.Image.new_from_file(self.tiff_file)
x = x.copy()
x.set_value("orientation", 6)
x.write_to_file("test-14.tif")
x1 = Vips.Image.new_from_file("test-14.tif")
x2 = Vips.Image.new_from_file("test-14.tif", autorotate = True)
self.assertEqual(x1.width, x2.height)
self.assertEqual(x1.height, x2.width)
os.unlink("test-14.tif")
x = Vips.Image.new_from_file(self.ome_file)
self.assertEqual(x.width, 439)
self.assertEqual(x.height, 167)
page_height = x.height
x = Vips.Image.new_from_file(self.ome_file, n = -1)
self.assertEqual(x.width, 439)
self.assertEqual(x.height, page_height * 15)
x = Vips.Image.new_from_file(self.ome_file, page = 1, n = -1)
self.assertEqual(x.width, 439)
self.assertEqual(x.height, page_height * 14)
x = Vips.Image.new_from_file(self.ome_file, page = 1, n = 2)
self.assertEqual(x.width, 439)
self.assertEqual(x.height, page_height * 2)
x = Vips.Image.new_from_file(self.ome_file, n = -1)
self.assertEqual(x(0,166)[0], 96)
self.assertEqual(x(0,167)[0], 0)
self.assertEqual(x(0,168)[0], 1)
x.write_to_file("test-15.tif")
x = Vips.Image.new_from_file("test-15.tif", n = -1)
self.assertEqual(x.width, 439)
self.assertEqual(x.height, page_height * 15)
self.assertEqual(x(0,166)[0], 96)
self.assertEqual(x(0,167)[0], 0)
self.assertEqual(x(0,168)[0], 1)
os.unlink("test-15.tif")
def test_magickload(self):
x = Vips.type_find("VipsForeign", "magickload")
if not x.is_instantiatable():
print("no magick support in this vips, skipping test")
return
def gif_valid(self, im):
# some libMagick produce an RGB for this image, some a mono, some
# rgba, some have a valid alpha, some don't :-(
# therefore ... just test channel 0
a = im(10, 10)[0]
self.assertAlmostEqual(a, 33)
self.assertEqual(im.width, 159)
self.assertEqual(im.height, 203)
self.file_loader("magickload", self.gif_file, gif_valid)
self.buffer_loader("magickload_buffer", self.gif_file, gif_valid)
# we should have rgba for svg files
im = Vips.Image.magickload(self.svg_file)
self.assertEqual(im.bands, 4)
# density should change size of generated svg
im = Vips.Image.magickload(self.svg_file, density = 100)
width = im.width
height = im.height
im = Vips.Image.magickload(self.svg_file, density = 200)
# This seems to fail on travis, no idea why, some problem in their IM
# perhaps
#self.assertEqual(im.width, width * 2)
#self.assertEqual(im.height, height * 2)
# all-frames should load every frame of the animation
# (though all-frames is deprecated)
im = Vips.Image.magickload(self.gif_anim_file)
width = im.width
height = im.height
im = Vips.Image.magickload(self.gif_anim_file, all_frames = True)
self.assertEqual(im.width, width)
self.assertEqual(im.height, height * 5)
# page/n let you pick a range of pages
im = Vips.Image.magickload(self.gif_anim_file)
width = im.width
height = im.height
im = Vips.Image.magickload(self.gif_anim_file, page = 1, n = 2)
self.assertEqual(im.width, width)
self.assertEqual(im.height, height * 2)
page_height = im.get_value("page-height")
self.assertEqual(page_height, height)
# should work for dicom
im = Vips.Image.magickload(self.dicom_file)
self.assertEqual(im.width, 128)
self.assertEqual(im.height, 128)
# some IMs are 3 bands, some are 1, can't really test
#self.assertEqual(im.bands, 1)
def test_webp(self):
x = Vips.type_find("VipsForeign", "webpload")
if not x.is_instantiatable():
print("no webp support in this vips, skipping test")
return
def webp_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [71, 166, 236])
self.assertEqual(im.width, 550)
self.assertEqual(im.height, 368)
self.assertEqual(im.bands, 3)
self.file_loader("webpload", self.webp_file, webp_valid)
self.buffer_loader("webpload_buffer", self.webp_file, webp_valid)
self.save_load_buffer("webpsave_buffer", "webpload_buffer",
self.colour, 60)
self.save_load("%s.webp", self.colour)
# test lossless mode
im = Vips.Image.new_from_file(self.webp_file)
buf = im.webpsave_buffer(lossless = True)
im2 = Vips.Image.new_from_buffer(buf, "")
self.assertEqual(im.avg(), im2.avg())
# higher Q should mean a bigger buffer
b1 = im.webpsave_buffer(Q = 10)
b2 = im.webpsave_buffer(Q = 90)
self.assertGreater(len(b2), len(b1))
# try saving an image with an ICC profile and reading it back ... if we
# can do it, our webp supports metadata load/save
buf = self.colour.webpsave_buffer()
im = Vips.Image.new_from_buffer(buf, "")
if im.get_typeof("icc-profile-data") != GObject.TYPE_INVALID:
# verify that the profile comes back unharmed
p1 = self.colour.get_value("icc-profile-data")
p2 = im.get_value("icc-profile-data")
self.assertEqual(p1, p2)
# add tests for exif, xmp, exif
# the exif test will need us to be able to walk the header, we can't
# just check exif-data
# we can test that exif changes change the output of webpsave
x = self.colour.copy()
x.set_value("orientation", 6)
buf = x.webpsave_buffer()
y = Vips.Image.new_from_buffer(buf, "")
self.assertEqual(y.get_value("orientation"), 6)
def test_analyzeload(self):
x = Vips.type_find("VipsForeign", "analyzeload")
if not x.is_instantiatable():
print("no analyze support in this vips, skipping test")
return
def analyze_valid(self, im):
a = im(10, 10)
self.assertAlmostEqual(a[0], 3335)
self.assertEqual(im.width, 128)
self.assertEqual(im.height, 8064)
self.assertEqual(im.bands, 1)
self.file_loader("analyzeload", self.analyze_file, analyze_valid)
def test_matload(self):
x = Vips.type_find("VipsForeign", "matload")
if not x.is_instantiatable():
print("no matlab support in this vips, skipping test")
return
def matlab_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [38671.0, 33914.0, 26762.0])
self.assertEqual(im.width, 290)
self.assertEqual(im.height, 442)
self.assertEqual(im.bands, 3)
self.file_loader("matload", self.matlab_file, matlab_valid)
def test_openexrload(self):
x = Vips.type_find("VipsForeign", "openexrload")
if not x.is_instantiatable():
print("no openexr support in this vips, skipping test")
return
def exr_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [0.124512, 0.159668,
0.040375, 1.0],
places = 5)
self.assertEqual(im.width, 610)
self.assertEqual(im.height, 406)
self.assertEqual(im.bands, 4)
self.file_loader("openexrload", self.exr_file, exr_valid)
def test_fitsload(self):
x = Vips.type_find("VipsForeign", "fitsload")
if not x.is_instantiatable():
print("no fits support in this vips, skipping test")
return
def fits_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [-0.165013, -0.148553, 1.09122,
-0.942242],
places = 5)
self.assertEqual(im.width, 200)
self.assertEqual(im.height, 200)
self.assertEqual(im.bands, 4)
self.file_loader("fitsload", self.fits_file, fits_valid)
self.save_load("%s.fits", self.mono)
def test_openslideload(self):
x = Vips.type_find("VipsForeign", "openslideload")
if not x.is_instantiatable():
print("no openslide support in this vips, skipping test")
return
def openslide_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [244, 250, 243, 255])
self.assertEqual(im.width, 2220)
self.assertEqual(im.height, 2967)
self.assertEqual(im.bands, 4)
self.file_loader("openslideload", self.openslide_file, openslide_valid)
def test_pdfload(self):
x = Vips.type_find("VipsForeign", "pdfload")
if not x.is_instantiatable():
print("no pdf support in this vips, skipping test")
return
def pdf_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [35, 31, 32, 255])
self.assertEqual(im.width, 1133)
self.assertEqual(im.height, 680)
self.assertEqual(im.bands, 4)
self.file_loader("pdfload", self.pdf_file, pdf_valid)
self.buffer_loader("pdfload_buffer", self.pdf_file, pdf_valid)
im = Vips.Image.new_from_file(self.pdf_file)
x = Vips.Image.new_from_file(self.pdf_file, scale = 2)
self.assertLess(abs(im.width * 2 - x.width), 2)
self.assertLess(abs(im.height * 2 - x.height), 2)
im = Vips.Image.new_from_file(self.pdf_file)
x = Vips.Image.new_from_file(self.pdf_file, dpi = 144)
self.assertLess(abs(im.width * 2 - x.width), 2)
self.assertLess(abs(im.height * 2 - x.height), 2)
def test_gifload(self):
x = Vips.type_find("VipsForeign", "gifload")
if not x.is_instantiatable():
print("no gif support in this vips, skipping test")
return
def gif_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [33])
self.assertEqual(im.width, 159)
self.assertEqual(im.height, 203)
self.assertEqual(im.bands, 1)
self.file_loader("gifload", self.gif_file, gif_valid)
self.buffer_loader("gifload_buffer", self.gif_file, gif_valid)
x1 = Vips.Image.new_from_file(self.gif_anim_file )
x2 = Vips.Image.new_from_file(self.gif_anim_file, n = 2 )
self.assertEqual(x2.height, 2 * x1.height)
page_height = x2.get_value("page-height")
self.assertEqual(page_height, x1.height)
x2 = Vips.Image.new_from_file(self.gif_anim_file, n = -1 )
self.assertEqual(x2.height, 5 * x1.height)
x2 = Vips.Image.new_from_file(self.gif_anim_file, page = 1, n = -1 )
self.assertEqual(x2.height, 4 * x1.height)
def test_svgload(self):
x = Vips.type_find("VipsForeign", "svgload")
if not x.is_instantiatable():
print("no svg support in this vips, skipping test")
return
def svg_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [0, 0, 77, 255])
self.assertEqual(im.width, 360)
self.assertEqual(im.height, 588)
self.assertEqual(im.bands, 4)
self.file_loader("svgload", self.svg_file, svg_valid)
self.buffer_loader("svgload_buffer", self.svg_file, svg_valid)
self.file_loader("svgload", self.svgz_file, svg_valid)
self.buffer_loader("svgload_buffer", self.svgz_file, svg_valid)
self.file_loader("svgload", self.svg_gz_file, svg_valid)
im = Vips.Image.new_from_file(self.svg_file)
x = Vips.Image.new_from_file(self.svg_file, scale = 2)
self.assertLess(abs(im.width * 2 - x.width), 2)
self.assertLess(abs(im.height * 2 - x.height), 2)
im = Vips.Image.new_from_file(self.svg_file)
x = Vips.Image.new_from_file(self.svg_file, dpi = 144)
self.assertLess(abs(im.width * 2 - x.width), 2)
self.assertLess(abs(im.height * 2 - x.height), 2)
def test_csv(self):
self.save_load("%s.csv", self.mono)
def test_matrix(self):
self.save_load("%s.mat", self.mono)
def test_ppm(self):
x = Vips.type_find("VipsForeign", "ppmload")
if not x.is_instantiatable():
print("no PPM support in this vips, skipping test")
return
self.save_load("%s.ppm", self.mono)
self.save_load("%s.ppm", self.colour)
def test_rad(self):
x = Vips.type_find("VipsForeign", "radload")
if not x.is_instantiatable():
print("no Radiance support in this vips, skipping test")
return
self.save_load("%s.hdr", self.colour)
self.save_buffer_tempfile("radsave_buffer", ".hdr", self.rad, max_diff = 0)
def test_dzsave(self):
x = Vips.type_find("VipsForeign", "dzsave")
if not x.is_instantiatable():
print("no dzsave support in this vips, skipping test")
return
# dzsave is hard to test, there are so many options
# test each option separately and hope they all function together
# correctly
# default deepzoom layout ... we must use png here, since we want to
# test the overlap for equality
self.colour.dzsave("test", suffix = ".png")
# test horizontal overlap ... expect 256 step, overlap 1
x = Vips.Image.new_from_file("test_files/10/0_0.png")
self.assertEqual(x.width, 255)
y = Vips.Image.new_from_file("test_files/10/1_0.png")
self.assertEqual(y.width, 256)
# the right two columns of x should equal the left two columns of y
left = x.crop(x.width - 2, 0, 2, x.height)
right = y.crop(0, 0, 2, y.height)
self.assertEqual((left - right).abs().max(), 0)
# test vertical overlap
self.assertEqual(x.height, 255)
y = Vips.Image.new_from_file("test_files/10/0_1.png")
self.assertEqual(y.height, 256)
# the bottom two rows of x should equal the top two rows of y
top = x.crop(0, x.height - 2, x.width, 2)
bottom = y.crop(0, 0, y.width, 2)
self.assertEqual((top - bottom).abs().max(), 0)
# there should be a bottom layer
x = Vips.Image.new_from_file("test_files/0/0_0.png")
self.assertEqual(x.width, 1)
self.assertEqual(x.height, 1)
# 10 should be the final layer
self.assertFalse(os.path.isdir("test_files/11"))
shutil.rmtree("test_files")
os.unlink("test.dzi")
# default google layout
self.colour.dzsave("test", layout = "google")
# test bottom-right tile ... default is 256x256 tiles, overlap 0
x = Vips.Image.new_from_file("test/2/2/3.jpg")
self.assertEqual(x.width, 256)
self.assertEqual(x.height, 256)
self.assertFalse(os.path.exists("test/2/2/4.jpg"))
self.assertFalse(os.path.exists("test/3"))
x = Vips.Image.new_from_file("test/blank.png")
self.assertEqual(x.width, 256)
self.assertEqual(x.height, 256)
shutil.rmtree("test")
# google layout with overlap ... verify that we clip correctly
# with overlap 192 tile size 256, we should step by 64 pixels each time
# so 3x3 tiles exactly
self.colour.crop(0, 0, 384, 384).dzsave("test2", layout = "google",
overlap = 192, depth = "one")
# test bottom-right tile ... default is 256x256 tiles, overlap 0
x = Vips.Image.new_from_file("test2/0/2/2.jpg")
self.assertEqual(x.width, 256)
self.assertEqual(x.height, 256)
self.assertFalse(os.path.exists("test2/0/3/3.jpg"))
shutil.rmtree("test2")
self.colour.crop(0, 0, 385, 385).dzsave("test3", layout = "google",
overlap = 192, depth = "one")
# test bottom-right tile ... default is 256x256 tiles, overlap 0
x = Vips.Image.new_from_file("test3/0/3/3.jpg")
self.assertEqual(x.width, 256)
self.assertEqual(x.height, 256)
self.assertFalse(os.path.exists("test3/0/4/4.jpg"))
shutil.rmtree("test3")
# default zoomify layout
self.colour.dzsave("test", layout = "zoomify")
# 256x256 tiles, no overlap
self.assertTrue(os.path.exists("test/ImageProperties.xml"))
x = Vips.Image.new_from_file("test/TileGroup0/2-3-2.jpg")
self.assertEqual(x.width, 256)
self.assertEqual(x.height, 256)
shutil.rmtree("test")
# test zip output
self.colour.dzsave("test.zip")
self.assertFalse(os.path.exists("test_files"))
self.assertFalse(os.path.exists("test.dzi"))
# test compressed zip output
self.colour.dzsave("test_compressed.zip", compression = -1)
self.assertLess(os.path.getsize("test_compressed.zip"),
os.path.getsize("test.zip"))
os.unlink("test.zip")
os.unlink("test_compressed.zip")
# test suffix
self.colour.dzsave("test", suffix = ".png")
x = Vips.Image.new_from_file("test_files/10/0_0.png")
self.assertEqual(x.width, 255)
shutil.rmtree("test_files")
os.unlink("test.dzi")
# test overlap
self.colour.dzsave("test", overlap = 200)
y = Vips.Image.new_from_file("test_files/10/1_1.jpeg")
self.assertEqual(y.width, 654)
shutil.rmtree("test_files")
os.unlink("test.dzi")
# test tile-size
self.colour.dzsave("test", tile_size = 512)
y = Vips.Image.new_from_file("test_files/10/0_0.jpeg")
self.assertEqual(y.width, 513)
self.assertEqual(y.height, 513)
shutil.rmtree("test_files")
os.unlink("test.dzi")
# test save to memory buffer
self.colour.dzsave("test-10.zip")
with open("test-10.zip", 'rb') as f:
buf1 = f.read()
os.unlink("test-10.zip")
buf2 = self.colour.dzsave_buffer(basename = "test-10")
self.assertEqual(len(buf1), len(buf2))
# we can't test the bytes are exactly equal, the timestamps will be
# different
if __name__ == '__main__':
unittest.main()