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# vim: set fileencoding=utf-8 :
import sys
import os
import shutil
import tempfile
import pytest
import pyvips
from helpers import *
class TestConnection:
tempdir = None
@classmethod
def setup_class(cls):
cls.tempdir = tempfile.mkdtemp()
cls.colour = pyvips.Image.jpegload(JPEG_FILE)
cls.mono = cls.colour.extract_band(1).copy()
# we remove the ICC profile: the RGB one will no longer be appropriate
cls.mono.remove("icc-profile-data")
cls.rad = cls.colour.float2rad().copy()
cls.rad.remove("icc-profile-data")
cls.cmyk = cls.colour.bandjoin(cls.mono)
cls.cmyk = cls.cmyk.copy(interpretation=pyvips.Interpretation.CMYK)
cls.cmyk.remove("icc-profile-data")
@classmethod
def teardown_class(cls):
shutil.rmtree(cls.tempdir, ignore_errors=True)
cls.colour = None
cls.mono = None
cls.rad = None
cls.cmyk = None
def test_source_new_from_file(self):
x = pyvips.Source.new_from_file(JPEG_FILE)
assert x.filename() == JPEG_FILE
@skip_if_no("jpegload_source")
def test_image_new_from_source_file(self):
x = pyvips.Source.new_from_file(JPEG_FILE)
y = pyvips.Image.new_from_source(x, "")
assert y.width == 290
assert y.height == 442
def test_target_new_to_file(self):
filename = temp_filename(self.tempdir, ".jpg")
x = pyvips.Target.new_to_file(filename)
assert x.filename() == filename
@skip_if_no("jpegload_source")
def test_image_write_to_target_file(self):
filename = temp_filename(self.tempdir, ".jpg")
x = pyvips.Target.new_to_file(filename)
self.colour.write_to_target(x, ".jpg")
with open(filename, 'rb') as f:
data = f.read()
data2 = self.colour.write_to_buffer(".jpg")
assert data == data2
def test_source_new_memory(self):
data = self.colour.write_to_buffer(".jpg")
x = pyvips.Source.new_from_memory(data)
assert x.filename() == None
@skip_if_no("jpegload_source")
def test_image_new_from_source_memory(self):
data = self.colour.write_to_buffer(".jpg")
x = pyvips.Source.new_from_memory(data)
y = pyvips.Image.new_from_source(x, "")
assert y.width == 290
assert y.height == 442
def test_target_new_memory(self):
x = pyvips.Target.new_to_memory()
assert x.filename() == None
@skip_if_no("jpegload_source")
def test_image_write_to_target_memory(self):
x = pyvips.Target.new_to_memory()
self.colour.write_to_target(x, ".jpg")
y = self.colour.write_to_buffer(".jpg")
assert x.get("blob") == y
@skip_if_no("matrixload_source")
@skip_if_no("matrixsave_target")
def test_connection_matrix(self):
x = pyvips.Target.new_to_memory()
self.mono.matrixsave_target(x)
y = pyvips.Source.new_from_memory(x.get("blob"))
im = pyvips.Image.matrixload_source(y)
assert (im - self.mono).abs().max() == 0
@skip_if_no("svgload_source")
def test_connection_svg(self):
svg = b'<svg xmlns="http://www.w3.org/2000/svg" width="1" height="1" />'
x = pyvips.Source.new_from_memory(svg)
im = pyvips.Image.new_from_source(x, "")
assert im.width == 1
assert im.height == 1
def test_connection_csv(self):
x = pyvips.Target.new_to_memory()
self.mono.csvsave_target(x)
y = pyvips.Source.new_from_memory(x.get("blob"))
im = pyvips.Image.csvload_source(y)
assert (im - self.mono).abs().max() == 0
@skip_if_no("ppmload_source")
@skip_if_no("ppmsave_target")
def test_connection_ppm(self):
x = pyvips.Target.new_to_memory()
self.mono.ppmsave_target(x)
y = pyvips.Source.new_from_memory(x.get("blob"))
im = pyvips.Image.ppmload_source(y)
assert (im - self.mono).abs().max() == 0
@skip_if_no("tiffload_source")
@skip_if_no("tiffsave_target")
def test_connection_tiff(self):
x = pyvips.Target.new_to_memory()
self.mono.tiffsave_target(x)
y = pyvips.Source.new_from_memory(x.get("blob"))
im = pyvips.Image.tiffload_source(y)
assert (im - self.mono).abs().max() == 0
@skip_if_no("dzsave_target")
def test_connection_dz(self):
x = pyvips.Target.new_to_memory()
self.mono.dzsave_target(x)
data = x.get("blob")
# it'll be a zip, we could extract stuff and look for tiles
assert len(data) > 1000
if __name__ == '__main__':
pytest.main()
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