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# $Id: imagetest.py 6192 2007-06-11 01:40:25Z hobu $
#
# Project: MapServer
# Purpose: xUnit style Python mapscript tests of map cloning
# Author: Sean Gillies, sgillies@frii.com
#
# ===========================================================================
# Copyright (c) 2004, Sean Gillies
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
# ===========================================================================
#
# Execute this module as a script from mapserver/mapscript/python
#
# python tests/cases/clonetest.py -v
#
# ===========================================================================
import os, sys
import unittest
# the testing module helps us import the pre-installed mapscript
from testing import mapscript
from testing import TEST_IMAGE as test_image
from testing import TESTMAPFILE
from testing import MapTestCase
from StringIO import StringIO
import cStringIO
import urllib
have_image = 0
try:
from PIL import Image
have_image = 1
except ImportError:
pass
class SaveToStringTestCase(MapTestCase):
def testSaveToString(self):
"""test that an image can be saved as a string"""
msimg = self.map.draw()
assert msimg.thisown == 1
data = msimg.saveToString()
filename = 'testSaveToString.png'
fh = open(filename, 'wb')
fh.write(data)
fh.close()
if have_image:
pyimg = Image.open(filename)
assert pyimg.format == 'PNG'
assert pyimg.size == (200, 200)
assert pyimg.mode == 'P'
else:
assert 1
class ImageObjTestCase(unittest.TestCase):
def testConstructor(self):
"""imageObj constructor works"""
imgobj = mapscript.imageObj(10, 10)
assert imgobj.thisown == 1
assert imgobj.height == 10
assert imgobj.width == 10
def testConstructorWithFormat(self):
"""imageObj with an optional driver works"""
driver = 'GD/PNG'
format = mapscript.outputFormatObj(driver)
imgobj = mapscript.imageObj(10, 10, format)
assert imgobj.thisown == 1
assert imgobj.format.driver == driver
assert imgobj.height == 10
assert imgobj.width == 10
def testConstructorFilename(self):
"""imageObj with a filename works"""
imgobj = mapscript.imageObj(test_image)
assert imgobj.thisown == 1
assert imgobj.height == 200
assert imgobj.width == 200
imgobj.save('testConstructorFilename.png')
def testConstructorFilenameDriver(self):
"""imageObj with a filename and a driver works"""
imgobj = mapscript.imageObj(test_image)
assert imgobj.thisown == 1
assert imgobj.height == 200
assert imgobj.width == 200
imgobj.save('testConstructorFilenameDriver.png')
def testConstructorStream(self):
"""imageObj with a file stream works"""
f = open(test_image, 'rb')
imgobj = mapscript.imageObj(f)
f.close()
assert imgobj.thisown == 1
assert imgobj.height == 200
assert imgobj.width == 200
def testConstructorStringIO(self):
"""imageObj with a cStringIO works"""
f = open(test_image, 'rb')
data = f.read()
f.close()
s = cStringIO.StringIO(data)
imgobj = mapscript.imageObj(s)
assert imgobj.thisown == 1
assert imgobj.height == 200
assert imgobj.width == 200
def testConstructorUrlStream(self):
"""imageObj with a URL stream works"""
url = urllib.urlopen('http://mapserver.gis.umn.edu/logo.jpg')
imgobj = mapscript.imageObj(url, 'GD/JPEG')
assert imgobj.thisown == 1
assert imgobj.height == 68
assert imgobj.width == 439
imgobj.save('testConstructorUrlStream.jpg')
class ImageWriteTestCase(MapTestCase):
def testImageWrite(self):
"""image writes data to an open filehandle"""
image = self.map.draw()
assert image.thisown == 1
filename = 'testImageWrite.png'
fh = open(filename, 'wb')
image.write(fh)
fh.close()
if have_image:
pyimg = Image.open(filename)
assert pyimg.format == 'PNG'
assert pyimg.size == (200, 200)
assert pyimg.mode == 'P'
else:
assert 1
def testImageWriteStringIO(self):
"""image writes data to a StringIO instance"""
image = self.map.draw()
assert image.thisown == 1
s = cStringIO.StringIO()
image.write(s)
filename = 'testImageWriteStringIO.png'
fh = open(filename, 'wb')
fh.write(s.getvalue())
fh.close()
if have_image:
pyimg = Image.open(filename)
assert pyimg.format == 'PNG'
assert pyimg.size == (200, 200)
assert pyimg.mode == 'P'
else:
assert 1
def testImageGetBytes(self):
"""image returns bytes"""
image = self.map.draw()
assert image.thisown == 1
s = cStringIO.StringIO(image.getBytes())
filename = 'testImageGetBytes.png'
fh = open(filename, 'wb')
fh.write(s.getvalue())
fh.close()
if have_image:
pyimg = Image.open(filename)
assert pyimg.format == 'PNG'
assert pyimg.size == (200, 200)
assert pyimg.mode == 'P'
else:
assert 1
if __name__ == '__main__':
unittest.main()
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