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#!/bin/env python
#Copyright ReportLab Europe Ltd. 2000-2012
#see license.txt for license details
__doc__="""Verfy that if in invariant mode, repeated runs
make identical file. This does NOT test across platforms
or python versions, only a user can do that :-)"""
__version__='''$Id$'''
from reportlab.lib.testutils import setOutDir,makeSuiteForClasses, outputfile, printLocation
setOutDir(__name__)
import unittest
from reportlab.pdfgen.canvas import Canvas
filename = outputfile('test_invariant.pdf')
class InvarTestCase(unittest.TestCase):
"Simplest test that makes PDF"
def test(self):
import os
from reportlab.lib.testutils import testsFolder
c = Canvas(filename, invariant=1, pageCompression=0)
c.setFont('Helvetica-Bold', 36)
c.drawString(100,700, 'Hello World')
gif = os.path.join(testsFolder,'pythonpowered.gif')
c.drawImage(gif,100,600)
c.save()
raw1 = open(filename, 'rb').read()
c = Canvas(filename, invariant=1, pageCompression=0)
c.setFont('Helvetica-Bold', 36)
c.drawString(100,700, 'Hello World')
c.drawImage(gif,100,600)
c.save()
raw2 = open(filename, 'rb').read()
assert raw1 == raw2, 'repeated runs differ!'
def makeSuite():
return makeSuiteForClasses(InvarTestCase)
#noruntests
if __name__ == "__main__":
# add some diagnostics, useful in invariant tests
import sys, os
from reportlab.lib.utils import md5, bytestr
verbose = ('-v' in sys.argv)
unittest.TextTestRunner().run(makeSuite())
if verbose:
#tell us about the file we produced
fileSize = os.stat(filename)[6]
raw = open(filename,'rb').read()
digest = md5.md5(bytestr(raw)).hexdigest()
major, minor = sys.version_info[0:2]
print('%s on %s (Python %d.%d):\n %d bytes, digest %s' % (
filename,sys.platform, major, minor, fileSize, digest))
printLocation()
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