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Diffstat (limited to 'test/Bug183618_TestCase.py')
| -rw-r--r-- | test/Bug183618_TestCase.py | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/test/Bug183618_TestCase.py b/test/Bug183618_TestCase.py new file mode 100644 index 0000000..bef3da3 --- /dev/null +++ b/test/Bug183618_TestCase.py @@ -0,0 +1,85 @@ +#!/usr/bin/python +# -*- coding: utf-8 -*- + +# ****************************************************************************** +# +# Copyright (C) 2008-2010 Olivier Tilloy <olivier@tilloy.net> +# +# This file is part of the pyexiv2 distribution. +# +# pyexiv2 is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# pyexiv2 is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with pyexiv2; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA. +# +# +# File: Bug183618_TestCase.py +# Author(s): Olivier Tilloy <olivier@tilloy.net> +# +# ****************************************************************************** + +import unittest +import testutils +import os.path +import pyexiv2 + +class Bug183618_TestCase(unittest.TestCase): + + """ + Test case for bug #183618. + + Summary: Exif.GPSInfo.{GPSLongitude,Latitude} are not decoded. + Description: The GPS latitude and longitude data is not correctly decoded + because multiple value fields for EXIF tags are not correctly dealt with: + only the first value is extracted and returned. + Fix: fixed with revision 79, behaviour changed with revision 82. + """ + + def checkTypeAndValue(self, tag, etype, evalue): + """ + Check the type and the value of a metadata tag against expected values. + + Keyword arguments: + tag -- the full name of the tag (eg. 'Exif.Image.DateTime') + etype -- the expected type of the tag value + evalue -- the expected value of the tag + """ + self.assertEqual(tag.__class__, etype) + self.assertEqual(tag, evalue) + + def testReadGPSMetadata(self): + """ + Test the extraction of the GPS metadata from a file. + """ + # Check that the reference file is not corrupted + filename = os.path.join('data', 'bug183618.jpg') + md5sum = 'ccddff432b0a2dc8f544f0f380e1fa6d' + self.assert_(testutils.CheckFileSum(filename, md5sum)) + + # Read the image metadata + image = pyexiv2.Image(filename) + image.readMetadata() + + # Exhaustive tests on the values of EXIF GPS metadata + gpsTags = [('Exif.Image.GPSTag', long, 1313L), + ('Exif.GPSInfo.GPSVersionID', str, '2 0 0 0 '), + ('Exif.GPSInfo.GPSLatitudeRef', str, 'N'), + ('Exif.GPSInfo.GPSLatitude', tuple, (pyexiv2.Rational(47, 1), pyexiv2.Rational(3817443, 1000000), pyexiv2.Rational(0, 1))), + ('Exif.GPSInfo.GPSLongitudeRef', str, 'E'), + ('Exif.GPSInfo.GPSLongitude', tuple, (pyexiv2.Rational(8, 1), pyexiv2.Rational(41359940, 1000000), pyexiv2.Rational(0, 1))), + ('Exif.GPSInfo.GPSAltitudeRef', str, '0 '), + ('Exif.GPSInfo.GPSAltitude', pyexiv2.Rational, pyexiv2.Rational(1908629, 1250)), + ('Exif.GPSInfo.GPSMapDatum', str, 'WGS-84')] + self.assertEqual([tag for tag in image.exifKeys() if tag.find('GPS') != -1], [tag[0] for tag in gpsTags]) + for tag in gpsTags: + self.checkTypeAndValue(image[tag[0]], tag[1], tag[2]) + |