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+#!/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: ReadMetadataTestCase.py
+# Author(s): Olivier Tilloy <olivier@tilloy.net>
+#
+# ******************************************************************************
+
+import unittest
+import testutils
+import os.path
+import pyexiv2
+import datetime
+
+class ReadMetadataTestCase(unittest.TestCase):
+
+ """
+ Test case on reading the metadata contained in a file.
+ """
+
+ 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 testReadMetadata(self):
+ """
+ Perform various tests on reading the metadata contained in a file.
+ """
+ # Check that the reference file is not corrupted
+ filename = os.path.join('data', 'smiley1.jpg')
+ md5sum = 'c066958457c685853293058f9bf129c1'
+ self.assert_(testutils.CheckFileSum(filename, md5sum))
+
+ # Read the image metadata
+ image = pyexiv2.Image(filename)
+ image.readMetadata()
+
+ # Exhaustive tests on the values of EXIF metadata
+ exifTags = [('Exif.Image.ImageDescription', str, 'Well it is a smiley that happens to be green'),
+ ('Exif.Image.XResolution', pyexiv2.Rational, pyexiv2.Rational(72, 1)),
+ ('Exif.Image.YResolution', pyexiv2.Rational, pyexiv2.Rational(72, 1)),
+ ('Exif.Image.ResolutionUnit', int, 2),
+ ('Exif.Image.Software', str, 'ImageReady'),
+ ('Exif.Image.DateTime', datetime.datetime, datetime.datetime(2004, 7, 13, 21, 23, 44)),
+ ('Exif.Image.Artist', str, 'No one'),
+ ('Exif.Image.Copyright', str, ''),
+ ('Exif.Image.ExifTag', long, 226L),
+ ('Exif.Photo.Flash', int, 80),
+ ('Exif.Photo.PixelXDimension', long, 167L),
+ ('Exif.Photo.PixelYDimension', long, 140L)]
+ self.assertEqual(image.exifKeys(), [tag[0] for tag in exifTags])
+ for tag in exifTags:
+ self.checkTypeAndValue(image[tag[0]], tag[1], tag[2])
+
+ # Exhaustive tests on the values of IPTC metadata
+ iptcTags = [('Iptc.Application2.Caption', str, 'yelimS green faced dude (iptc caption)'),
+ ('Iptc.Application2.Writer', str, 'Nobody'),
+ ('Iptc.Application2.Byline', str, 'Its me'),
+ ('Iptc.Application2.ObjectName', str, 'GreeenDude'),
+ ('Iptc.Application2.DateCreated', datetime.date, datetime.date(2004, 7, 13)),
+ ('Iptc.Application2.City', str, 'Seattle'),
+ ('Iptc.Application2.ProvinceState', str, 'WA'),
+ ('Iptc.Application2.CountryName', str, 'USA'),
+ ('Iptc.Application2.Category', str, 'Things'),
+ ('Iptc.Application2.Keywords', tuple, ('Green', 'Smiley', 'Dude')),
+ ('Iptc.Application2.Copyright', str, '\xa9 2004 Nobody')]
+ self.assertEqual(image.iptcKeys(), [tag[0] for tag in iptcTags])
+ for tag in iptcTags:
+ self.checkTypeAndValue(image[tag[0]], tag[1], tag[2])
+
+ # Test on the JPEG comment
+ self.checkTypeAndValue(image.getComment(),
+ str, 'This is a jpeg comment, about the green smiley.')
+