# -*- coding: utf-8 -*- # ****************************************************************************** # # Copyright (C) 2009-2010 Olivier Tilloy # # 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. # # Author: Olivier Tilloy # # ****************************************************************************** import unittest from pyexiv2.exif import ExifTag, ExifValueError from pyexiv2.utils import Rational, Fraction import datetime class TestExifTag(unittest.TestCase): def test_convert_to_python_ascii(self): # Valid values: datetimes tag = ExifTag('Exif.Image.DateTime') self.assertEqual(tag.type, 'Ascii') self.assertEqual(tag._convert_to_python('2009-03-01 12:46:51'), datetime.datetime(2009, 03, 01, 12, 46, 51)) self.assertEqual(tag._convert_to_python('2009:03:01 12:46:51'), datetime.datetime(2009, 03, 01, 12, 46, 51)) self.assertEqual(tag._convert_to_python('2009-03-01T12:46:51Z'), datetime.datetime(2009, 03, 01, 12, 46, 51)) # Valid values: dates tag = ExifTag('Exif.GPSInfo.GPSDateStamp') self.assertEqual(tag.type, 'Ascii') self.assertEqual(tag._convert_to_python('2009:08:04'), datetime.date(2009, 8, 4)) # Valid values: strings tag = ExifTag('Exif.Image.Copyright') self.assertEqual(tag.type, 'Ascii') self.assertEqual(tag._convert_to_python('Some text.'), 'Some text.') self.assertEqual(tag._convert_to_python(u'Some text with exotic chàräctérʐ.'), u'Some text with exotic chàräctérʐ.') # Invalid values: datetimes tag = ExifTag('Exif.Image.DateTime') self.assertEqual(tag.type, 'Ascii') self.assertEqual(tag._convert_to_python('2009-13-01 12:46:51'), '2009-13-01 12:46:51') self.assertEqual(tag._convert_to_python('2009-12-01'), '2009-12-01') # Invalid values: dates tag = ExifTag('Exif.GPSInfo.GPSDateStamp') self.assertEqual(tag.type, 'Ascii') self.assertEqual(tag._convert_to_python('2009:13:01'), '2009:13:01') self.assertEqual(tag._convert_to_python('2009-12-01'), '2009-12-01') def test_convert_to_string_ascii(self): # Valid values: datetimes tag = ExifTag('Exif.Image.DateTime') self.assertEqual(tag.type, 'Ascii') self.assertEqual(tag._convert_to_string(datetime.datetime(2009, 03, 01, 12, 54, 28)), '2009:03:01 12:54:28') self.assertEqual(tag._convert_to_string(datetime.date(2009, 03, 01)), '2009:03:01 00:00:00') # Valid values: dates tag = ExifTag('Exif.GPSInfo.GPSDateStamp') self.assertEqual(tag.type, 'Ascii') self.assertEqual(tag._convert_to_string(datetime.date(2009, 03, 01)), '2009:03:01') # Valid values: strings tag = ExifTag('Exif.Image.Copyright') self.assertEqual(tag.type, 'Ascii') self.assertEqual(tag._convert_to_string(u'Some text'), 'Some text') self.assertEqual(tag._convert_to_string(u'Some text with exotic chàräctérʐ.'), 'Some text with exotic chàräctérʐ.') self.assertEqual(tag._convert_to_string('Some text with exotic chàräctérʐ.'), 'Some text with exotic chàräctérʐ.') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, None) def test_convert_to_python_byte(self): # Valid values tag = ExifTag('Exif.GPSInfo.GPSVersionID') self.assertEqual(tag.type, 'Byte') self.assertEqual(tag._convert_to_python('D'), 'D') def test_convert_to_string_byte(self): # Valid values tag = ExifTag('Exif.GPSInfo.GPSVersionID') self.assertEqual(tag.type, 'Byte') self.assertEqual(tag._convert_to_string('Some text'), 'Some text') self.assertEqual(tag._convert_to_string(u'Some text'), 'Some text') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, None) def test_convert_to_python_sbyte(self): # Valid values tag = ExifTag('Exif.Pentax.Temperature') self.assertEqual(tag.type, 'SByte') self.assertEqual(tag._convert_to_python('15'), '15') def test_convert_to_string_sbyte(self): # Valid values tag = ExifTag('Exif.Pentax.Temperature') self.assertEqual(tag.type, 'SByte') self.assertEqual(tag._convert_to_string('13'), '13') self.assertEqual(tag._convert_to_string(u'13'), '13') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, None) def test_convert_to_python_comment(self): # Valid values tag = ExifTag('Exif.Photo.UserComment') self.assertEqual(tag.type, 'Comment') self.assertEqual(tag._convert_to_python('A comment'), 'A comment') charsets = ('Ascii', 'Jis', 'Unicode', 'Undefined', 'InvalidCharsetId') for charset in charsets: self.assertEqual(tag._convert_to_python('charset="%s" A comment' % charset), 'A comment') self.failIfEqual(tag._convert_to_python('charset="%s" déjà vu' % charset), 'déjà vu') def test_convert_to_string_comment(self): # Valid values tag = ExifTag('Exif.Photo.UserComment') self.assertEqual(tag.type, 'Comment') self.assertEqual(tag._convert_to_string('A comment'), 'A comment') self.assertEqual(tag._convert_to_string(u'A comment'), 'A comment') charsets = ('Ascii', 'Jis', 'Unicode', 'Undefined') for charset in charsets: tag.raw_value = 'charset="%s" foo' % charset self.assertEqual(tag._convert_to_string('A comment'), 'charset="%s" A comment' % charset) self.assertEqual(tag._convert_to_string('déjà vu'), 'déjà vu') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, None) def test_convert_to_python_short(self): # Valid values tag = ExifTag('Exif.Image.BitsPerSample') self.assertEqual(tag.type, 'Short') self.assertEqual(tag._convert_to_python('8'), 8) self.assertEqual(tag._convert_to_python('+5628'), 5628) # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_python, 'abc') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '5,64') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '47.0001') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '1E3') def test_convert_to_string_short(self): # Valid values tag = ExifTag('Exif.Image.BitsPerSample') self.assertEqual(tag.type, 'Short') self.assertEqual(tag._convert_to_string(123), '123') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, -57) self.failUnlessRaises(ExifValueError, tag._convert_to_string, 'invalid') self.failUnlessRaises(ExifValueError, tag._convert_to_string, 3.14) def test_convert_to_python_sshort(self): # Valid values tag = ExifTag('Exif.Image.TimeZoneOffset') self.assertEqual(tag.type, 'SShort') self.assertEqual(tag._convert_to_python('8'), 8) self.assertEqual(tag._convert_to_python('+5'), 5) self.assertEqual(tag._convert_to_python('-6'), -6) # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_python, 'abc') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '5,64') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '47.0001') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '1E3') def test_convert_to_string_sshort(self): # Valid values tag = ExifTag('Exif.Image.TimeZoneOffset') self.assertEqual(tag.type, 'SShort') self.assertEqual(tag._convert_to_string(12), '12') self.assertEqual(tag._convert_to_string(-3), '-3') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, 'invalid') self.failUnlessRaises(ExifValueError, tag._convert_to_string, 3.14) def test_convert_to_python_long(self): # Valid values tag = ExifTag('Exif.Image.ImageWidth') self.assertEqual(tag.type, 'Long') self.assertEqual(tag._convert_to_python('8'), 8) self.assertEqual(tag._convert_to_python('+5628'), 5628) # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_python, 'abc') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '5,64') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '47.0001') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '1E3') def test_convert_to_string_long(self): # Valid values tag = ExifTag('Exif.Image.ImageWidth') self.assertEqual(tag.type, 'Long') self.assertEqual(tag._convert_to_string(123), '123') self.assertEqual(tag._convert_to_string(678024), '678024') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, -57) self.failUnlessRaises(ExifValueError, tag._convert_to_string, 'invalid') self.failUnlessRaises(ExifValueError, tag._convert_to_string, 3.14) def test_convert_to_python_slong(self): # Valid values tag = ExifTag('Exif.OlympusCs.ManometerReading') self.assertEqual(tag.type, 'SLong') self.assertEqual(tag._convert_to_python('23'), 23) self.assertEqual(tag._convert_to_python('+5628'), 5628) self.assertEqual(tag._convert_to_python('-437'), -437) # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_python, 'abc') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '5,64') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '47.0001') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '1E3') def test_convert_to_string_slong(self): # Valid values tag = ExifTag('Exif.OlympusCs.ManometerReading') self.assertEqual(tag.type, 'SLong') self.assertEqual(tag._convert_to_string(123), '123') self.assertEqual(tag._convert_to_string(678024), '678024') self.assertEqual(tag._convert_to_string(-437), '-437') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, 'invalid') self.failUnlessRaises(ExifValueError, tag._convert_to_string, 3.14) def test_convert_to_python_rational(self): # Valid values tag = ExifTag('Exif.Image.XResolution') self.assertEqual(tag.type, 'Rational') self.assertEqual(tag._convert_to_python('5/3'), Rational(5, 3)) # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_python, 'invalid') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '-5/3') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '5 / 3') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '5/-3') def test_convert_to_string_rational(self): # Valid values tag = ExifTag('Exif.Image.XResolution') self.assertEqual(tag.type, 'Rational') self.assertEqual(tag._convert_to_string(Rational(5, 3)), '5/3') if Fraction is not None: self.assertEqual(tag._convert_to_string(Fraction('1.6')), '8/5') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, 'invalid') self.failUnlessRaises(ExifValueError, tag._convert_to_string, Rational(-5, 3)) def test_convert_to_python_srational(self): # Valid values tag = ExifTag('Exif.Image.BaselineExposure') self.assertEqual(tag.type, 'SRational') self.assertEqual(tag._convert_to_python('5/3'), Rational(5, 3)) self.assertEqual(tag._convert_to_python('-5/3'), Rational(-5, 3)) # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_python, 'invalid') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '5 / 3') self.failUnlessRaises(ExifValueError, tag._convert_to_python, '5/-3') def test_convert_to_string_srational(self): # Valid values tag = ExifTag('Exif.Image.BaselineExposure') self.assertEqual(tag.type, 'SRational') self.assertEqual(tag._convert_to_string(Rational(5, 3)), '5/3') self.assertEqual(tag._convert_to_string(Rational(-5, 3)), '-5/3') if Fraction is not None: self.assertEqual(tag._convert_to_string(Fraction('1.6')), '8/5') self.assertEqual(tag._convert_to_string(Fraction('-1.6')), '-8/5') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, 'invalid') def test_convert_to_python_undefined(self): # Valid values tag = ExifTag('Exif.Photo.ExifVersion') self.assertEqual(tag.type, 'Undefined') self.assertEqual(tag._convert_to_python('48 49 48 48'), '0100') def test_convert_to_string_undefined(self): # Valid values tag = ExifTag('Exif.Photo.ExifVersion') self.assertEqual(tag.type, 'Undefined') self.assertEqual(tag._convert_to_string('0100'), '48 49 48 48') self.assertEqual(tag._convert_to_string(u'0100'), '48 49 48 48') # Invalid values self.failUnlessRaises(ExifValueError, tag._convert_to_string, 3) def test_set_value(self): tag = ExifTag('Exif.Thumbnail.Orientation', 1) # top, left old_value = tag.value tag.value = 2 self.failIfEqual(tag.value, old_value) def test_set_raw_value_invalid(self): tag = ExifTag('Exif.GPSInfo.GPSVersionID') value = '2 0 0 foo' self.failUnlessRaises(ValueError, tag._set_raw_value, value)