# -*- coding: utf-8 -*- # ****************************************************************************** # # Copyright (C) 2009-2011 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.xmp import XmpTag, XmpValueError, register_namespace, \ unregister_namespace, unregister_namespaces from pyexiv2.utils import FixedOffset, make_fraction from pyexiv2.metadata import ImageMetadata import datetime from testutils import EMPTY_JPG_DATA # Optional dependency on python-tz, more tests can be run if it is installed try: import pytz except ImportError: pytz = None class TestXmpTag(unittest.TestCase): def test_convert_to_python_bag(self): # Valid values tag = XmpTag('Xmp.dc.subject') self.assertEqual(tag.type, 'bag Text') self.assertEqual(tag._convert_to_python('', 'Text'), u'') self.assertEqual(tag._convert_to_python('One value only', 'Text'), u'One value only') def test_convert_to_string_bag(self): # Valid values tag = XmpTag('Xmp.dc.subject') self.assertEqual(tag.type, 'bag Text') self.assertEqual(tag._convert_to_string(u'', 'Text'), '') self.assertEqual(tag._convert_to_string('One value only', 'Text'), 'One value only') self.assertEqual(tag._convert_to_string(u'One value only', 'Text'), 'One value only') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_string, [1, 2, 3], 'Text') def test_convert_to_python_boolean(self): # Valid values tag = XmpTag('Xmp.xmpRights.Marked') self.assertEqual(tag.type, 'Boolean') self.assertEqual(tag._convert_to_python('True', 'Boolean'), True) self.assertEqual(tag._convert_to_python('False', 'Boolean'), False) # Invalid values: not converted self.failUnlessRaises(XmpValueError, tag._convert_to_python, 'invalid', 'Boolean') self.failUnlessRaises(XmpValueError, tag._convert_to_python, None, 'Boolean') def test_convert_to_string_boolean(self): # Valid values tag = XmpTag('Xmp.xmpRights.Marked') self.assertEqual(tag.type, 'Boolean') self.assertEqual(tag._convert_to_string(True, 'Boolean'), 'True') self.assertEqual(tag._convert_to_string(False, 'Boolean'), 'False') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_string, 'invalid', 'Boolean') self.failUnlessRaises(XmpValueError, tag._convert_to_string, None, 'Boolean') def test_convert_to_python_date(self): # Valid values tag = XmpTag('Xmp.xmp.CreateDate') self.assertEqual(tag.type, 'Date') self.assertEqual(tag._convert_to_python('1999', 'Date'), datetime.date(1999, 1, 1)) self.assertEqual(tag._convert_to_python('1999-10', 'Date'), datetime.date(1999, 10, 1)) self.assertEqual(tag._convert_to_python('1999-10-13', 'Date'), datetime.date(1999, 10, 13)) self.assertEqual(tag._convert_to_python('1999-10-13T05:03Z', 'Date') - \ datetime.datetime(1999, 10, 13, 5, 3, tzinfo=FixedOffset()), datetime.timedelta(0)) self.assertEqual(tag._convert_to_python('1999-10-13T05:03+06:00', 'Date') - \ datetime.datetime(1999, 10, 13, 5, 3, tzinfo=FixedOffset('+', 6, 0)), datetime.timedelta(0)) self.assertEqual(tag._convert_to_python('1999-10-13T05:03-06:00', 'Date') - \ datetime.datetime(1999, 10, 13, 5, 3, tzinfo=FixedOffset('-', 6, 0)), datetime.timedelta(0)) self.assertEqual(tag._convert_to_python('1999-10-13T05:03:54Z', 'Date') - \ datetime.datetime(1999, 10, 13, 5, 3, 54, tzinfo=FixedOffset()), datetime.timedelta(0)) self.assertEqual(tag._convert_to_python('1999-10-13T05:03:54+06:00', 'Date') - \ datetime.datetime(1999, 10, 13, 5, 3, 54, tzinfo=FixedOffset('+', 6, 0)), datetime.timedelta(0)) self.assertEqual(tag._convert_to_python('1999-10-13T05:03:54-06:00', 'Date') - \ datetime.datetime(1999, 10, 13, 5, 3, 54, tzinfo=FixedOffset('-', 6, 0)), datetime.timedelta(0)) self.assertEqual(tag._convert_to_python('1999-10-13T05:03:54.721Z', 'Date') - \ datetime.datetime(1999, 10, 13, 5, 3, 54, 721000, tzinfo=FixedOffset()), datetime.timedelta(0)) self.assertEqual(tag._convert_to_python('1999-10-13T05:03:54.721+06:00', 'Date') - \ datetime.datetime(1999, 10, 13, 5, 3, 54, 721000, tzinfo=FixedOffset('+', 6, 0)), datetime.timedelta(0)) self.assertEqual(tag._convert_to_python('1999-10-13T05:03:54.721-06:00', 'Date') - \ datetime.datetime(1999, 10, 13, 5, 3, 54, 721000, tzinfo=FixedOffset('-', 6, 0)), datetime.timedelta(0)) # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_python, 'invalid', 'Date') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '11/10/1983', 'Date') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '-1000', 'Date') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '2009-13', 'Date') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '2009-10-32', 'Date') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '2009-10-30T25:12Z', 'Date') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '2009-10-30T23:67Z', 'Date') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '2009-01-22T21', 'Date') def test_convert_to_string_date(self): # Valid values tag = XmpTag('Xmp.xmp.CreateDate') self.assertEqual(tag.type, 'Date') self.assertEqual(tag._convert_to_string(datetime.date(2009, 2, 4), 'Date'), '2009-02-04') self.assertEqual(tag._convert_to_string(datetime.date(1899, 12, 31), 'Date'), '1899-12-31') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13), 'Date'), '1999-10-13') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3), 'Date'), '1999-10-13T05:03Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1899, 12, 31, 23, 59), 'Date'), '1899-12-31T23:59Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, tzinfo=FixedOffset()), 'Date'), '1999-10-13T05:03Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1899, 12, 31, 23, 59, tzinfo=FixedOffset()), 'Date'), '1899-12-31T23:59Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, tzinfo=FixedOffset('+', 5, 30)), 'Date'), '1999-10-13T05:03+05:30') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, tzinfo=FixedOffset('-', 11, 30)), 'Date'), '1999-10-13T05:03-11:30') self.assertEqual(tag._convert_to_string(datetime.datetime(1899, 12, 31, 23, 59, tzinfo=FixedOffset('+', 5, 30)), 'Date'), '1899-12-31T23:59+05:30') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, 27), 'Date'), '1999-10-13T05:03:27Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1899, 12, 31, 23, 59, 59), 'Date'), '1899-12-31T23:59:59Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, 27, tzinfo=FixedOffset()), 'Date'), '1999-10-13T05:03:27Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1899, 12, 31, 23, 59, 59, tzinfo=FixedOffset()), 'Date'), '1899-12-31T23:59:59Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, 27, tzinfo=FixedOffset('+', 5, 30)), 'Date'), '1999-10-13T05:03:27+05:30') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, 27, tzinfo=FixedOffset('-', 11, 30)), 'Date'), '1999-10-13T05:03:27-11:30') self.assertEqual(tag._convert_to_string(datetime.datetime(1899, 12, 31, 23, 59, 59, tzinfo=FixedOffset('+', 5, 30)), 'Date'), '1899-12-31T23:59:59+05:30') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, 27, 124300), 'Date'), '1999-10-13T05:03:27.1243Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1899, 12, 31, 23, 59, 59, 124300), 'Date'), '1899-12-31T23:59:59.1243Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, 27, 124300, tzinfo=FixedOffset()), 'Date'), '1999-10-13T05:03:27.1243Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1899, 12, 31, 23, 59, 59, 124300, tzinfo=FixedOffset()), 'Date'), '1899-12-31T23:59:59.1243Z') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, 27, 124300, tzinfo=FixedOffset('+', 5, 30)), 'Date'), '1999-10-13T05:03:27.1243+05:30') self.assertEqual(tag._convert_to_string(datetime.datetime(1999, 10, 13, 5, 3, 27, 124300, tzinfo=FixedOffset('-', 11, 30)), 'Date'), '1999-10-13T05:03:27.1243-11:30') self.assertEqual(tag._convert_to_string(datetime.datetime(1899, 12, 31, 23, 59, 59, 124300, tzinfo=FixedOffset('+', 5, 30)), 'Date'), '1899-12-31T23:59:59.1243+05:30') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_string, 'invalid', 'Date') self.failUnlessRaises(XmpValueError, tag._convert_to_string, None, 'Date') @unittest.skipIf(pytz is None, 'install python-tz to run this test') def test_convert_to_string_date_with_real_timezones(self): tag = XmpTag('Xmp.xmp.CreateDate') self.assertEqual(tag.type, 'Date') t = pytz.timezone('UTC').localize(datetime.datetime(2011, 2, 2, 10, 52, 4)) self.assertEqual(tag._convert_to_string(t, 'Date'), '2011-02-02T10:52:04Z') t = pytz.timezone('CET').localize(datetime.datetime(2011, 2, 2, 10, 52, 4)) self.assertEqual(tag._convert_to_string(t, 'Date'), '2011-02-02T10:52:04+01:00') def test_convert_to_python_integer(self): # Valid values tag = XmpTag('Xmp.xmpMM.SaveID') self.assertEqual(tag.type, 'Integer') self.assertEqual(tag._convert_to_python('23', 'Integer'), 23) self.assertEqual(tag._convert_to_python('+5628', 'Integer'), 5628) self.assertEqual(tag._convert_to_python('-4', 'Integer'), -4) # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_python, 'abc', 'Integer') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '5,64', 'Integer') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '47.0001', 'Integer') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '1E3', 'Integer') def test_convert_to_string_integer(self): # Valid values tag = XmpTag('Xmp.xmpMM.SaveID') self.assertEqual(tag.type, 'Integer') self.assertEqual(tag._convert_to_string(123, 'Integer'), '123') self.assertEqual(tag._convert_to_string(-57, 'Integer'), '-57') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_string, 'invalid', 'Integer') self.failUnlessRaises(XmpValueError, tag._convert_to_string, 3.14, 'Integer') def test_convert_to_python_mimetype(self): # Valid values tag = XmpTag('Xmp.dc.format') self.assertEqual(tag.type, 'MIMEType') self.assertEqual(tag._convert_to_python('image/jpeg', 'MIMEType'), ('image', 'jpeg')) self.assertEqual(tag._convert_to_python('video/ogg', 'MIMEType'), ('video', 'ogg')) # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_python, 'invalid', 'MIMEType') self.failUnlessRaises(XmpValueError, tag._convert_to_python, 'image-jpeg', 'MIMEType') def test_convert_to_string_mimetype(self): # Valid values tag = XmpTag('Xmp.dc.format') self.assertEqual(tag.type, 'MIMEType') self.assertEqual(tag._convert_to_string(('image', 'jpeg'), 'MIMEType'), 'image/jpeg') self.assertEqual(tag._convert_to_string(('video', 'ogg'), 'MIMEType'), 'video/ogg') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_string, 'invalid', 'MIMEType') self.failUnlessRaises(XmpValueError, tag._convert_to_string, ('image',), 'MIMEType') def test_convert_to_python_propername(self): # Valid values tag = XmpTag('Xmp.photoshop.CaptionWriter') self.assertEqual(tag.type, 'ProperName') self.assertEqual(tag._convert_to_python('Gérard', 'ProperName'), u'Gérard') self.assertEqual(tag._convert_to_python('Python Software Foundation', 'ProperName'), u'Python Software Foundation') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_python, None, 'ProperName') def test_convert_to_string_propername(self): # Valid values tag = XmpTag('Xmp.photoshop.CaptionWriter') self.assertEqual(tag.type, 'ProperName') self.assertEqual(tag._convert_to_string('Gérard', 'ProperName'), 'Gérard') self.assertEqual(tag._convert_to_string(u'Gérard', 'ProperName'), 'Gérard') self.assertEqual(tag._convert_to_string(u'Python Software Foundation', 'ProperName'), 'Python Software Foundation') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_string, None, 'ProperName') def test_convert_to_python_text(self): # Valid values tag = XmpTag('Xmp.dc.source') self.assertEqual(tag.type, 'Text') self.assertEqual(tag._convert_to_python('Some text.', 'Text'), u'Some text.') self.assertEqual(tag._convert_to_python('Some text with exotic chàräctérʐ.', 'Text'), u'Some text with exotic chàräctérʐ.') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_python, None, 'Text') def test_convert_to_string_text(self): # Valid values tag = XmpTag('Xmp.dc.source') self.assertEqual(tag.type, 'Text') self.assertEqual(tag._convert_to_string(u'Some text', 'Text'), 'Some text') self.assertEqual(tag._convert_to_string(u'Some text with exotic chàräctérʐ.', 'Text'), 'Some text with exotic chàräctérʐ.') self.assertEqual(tag._convert_to_string('Some text with exotic chàräctérʐ.', 'Text'), 'Some text with exotic chàräctérʐ.') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_string, None, 'Text') def test_convert_to_python_uri(self): # Valid values tag = XmpTag('Xmp.xmpMM.DocumentID') self.assertEqual(tag.type, 'URI') self.assertEqual(tag._convert_to_python('http://example.com', 'URI'), 'http://example.com') self.assertEqual(tag._convert_to_python('https://example.com', 'URI'), 'https://example.com') self.assertEqual(tag._convert_to_python('http://localhost:8000/resource', 'URI'), 'http://localhost:8000/resource') self.assertEqual(tag._convert_to_python('uuid:9A3B7F52214211DAB6308A7391270C13', 'URI'), 'uuid:9A3B7F52214211DAB6308A7391270C13') def test_convert_to_string_uri(self): # Valid values tag = XmpTag('Xmp.xmpMM.DocumentID') self.assertEqual(tag.type, 'URI') self.assertEqual(tag._convert_to_string('http://example.com', 'URI'), 'http://example.com') self.assertEqual(tag._convert_to_string(u'http://example.com', 'URI'), 'http://example.com') self.assertEqual(tag._convert_to_string('https://example.com', 'URI'), 'https://example.com') self.assertEqual(tag._convert_to_string('http://localhost:8000/resource', 'URI'), 'http://localhost:8000/resource') self.assertEqual(tag._convert_to_string('uuid:9A3B7F52214211DAB6308A7391270C13', 'URI'), 'uuid:9A3B7F52214211DAB6308A7391270C13') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_string, None, 'URI') def test_convert_to_python_url(self): # Valid values tag = XmpTag('Xmp.xmp.BaseURL') self.assertEqual(tag.type, 'URL') self.assertEqual(tag._convert_to_python('http://example.com', 'URL'), 'http://example.com') self.assertEqual(tag._convert_to_python('https://example.com', 'URL'), 'https://example.com') self.assertEqual(tag._convert_to_python('http://localhost:8000/resource', 'URL'), 'http://localhost:8000/resource') def test_convert_to_string_url(self): # Valid values tag = XmpTag('Xmp.xmp.BaseURL') self.assertEqual(tag.type, 'URL') self.assertEqual(tag._convert_to_string('http://example.com', 'URL'), 'http://example.com') self.assertEqual(tag._convert_to_string(u'http://example.com', 'URL'), 'http://example.com') self.assertEqual(tag._convert_to_string('https://example.com', 'URL'), 'https://example.com') self.assertEqual(tag._convert_to_string('http://localhost:8000/resource', 'URL'), 'http://localhost:8000/resource') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_string, None, 'URL') def test_convert_to_python_rational(self): # Valid values tag = XmpTag('Xmp.xmpDM.videoPixelAspectRatio') self.assertEqual(tag.type, 'Rational') self.assertEqual(tag._convert_to_python('5/3', 'Rational'), make_fraction(5, 3)) self.assertEqual(tag._convert_to_python('-5/3', 'Rational'), make_fraction(-5, 3)) # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_python, 'invalid', 'Rational') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '5 / 3', 'Rational') self.failUnlessRaises(XmpValueError, tag._convert_to_python, '5/-3', 'Rational') def test_convert_to_string_rational(self): # Valid values tag = XmpTag('Xmp.xmpDM.videoPixelAspectRatio') self.assertEqual(tag.type, 'Rational') self.assertEqual(tag._convert_to_string(make_fraction(5, 3), 'Rational'), '5/3') self.assertEqual(tag._convert_to_string(make_fraction(-5, 3), 'Rational'), '-5/3') # Invalid values self.failUnlessRaises(XmpValueError, tag._convert_to_string, 'invalid', 'Rational') # TODO: other types def test_set_value(self): tag = XmpTag('Xmp.xmp.ModifyDate', datetime.datetime(2005, 9, 7, 15, 9, 51, tzinfo=FixedOffset('-', 7, 0))) old_value = tag.value tag.value = datetime.datetime(2009, 4, 22, 8, 30, 27, tzinfo=FixedOffset()) self.failIfEqual(tag.value, old_value) def test_set_value_empty(self): tag = XmpTag('Xmp.dc.creator') self.failUnlessEqual(tag.type, 'seq ProperName') self.failUnlessRaises(ValueError, setattr, tag, 'value', []) tag = XmpTag('Xmp.dc.title') self.failUnlessEqual(tag.type, 'Lang Alt') self.failUnlessRaises(ValueError, setattr, tag, 'value', {}) def test_set_value_incorrect_type(self): # Expecting a list of values tag = XmpTag('Xmp.dc.publisher') self.failUnlessEqual(tag.type, 'bag ProperName') self.failUnlessRaises(TypeError, setattr, tag, 'value', None) self.failUnlessRaises(TypeError, setattr, tag, 'value', 'bleh') # Expecting a dictionary mapping language codes to values tag = XmpTag('Xmp.dc.description') self.failUnlessEqual(tag.type, 'Lang Alt') self.failUnlessRaises(TypeError, setattr, tag, 'value', None) self.failUnlessRaises(TypeError, setattr, tag, 'value', ['bleh']) def test_set_value_basestring_for_langalt(self): tag = XmpTag('Xmp.dc.description') self.failUnlessEqual(tag.type, 'Lang Alt') tag.value = 'bleh' self.failUnlessEqual(tag.value, {'x-default': 'bleh'}) class TestXmpNamespaces(unittest.TestCase): def setUp(self): self.metadata = ImageMetadata.from_buffer(EMPTY_JPG_DATA) self.metadata.read() def test_not_registered(self): self.assertEqual(len(self.metadata.xmp_keys), 0) key = 'Xmp.foo.bar' value = 'foobar' self.assertRaises(KeyError, self.metadata.__setitem__, key, value) def test_name_must_end_with_slash(self): self.assertRaises(ValueError, register_namespace, 'foobar', 'foo') self.assertRaises(ValueError, unregister_namespace, 'foobar') def test_cannot_register_builtin(self): self.assertRaises(KeyError, register_namespace, 'foobar/', 'dc') def test_cannot_register_twice(self): name = 'foobar/' prefix = 'boo' register_namespace(name, prefix) self.assertRaises(KeyError, register_namespace, name, prefix) def test_register_and_set(self): register_namespace('foobar/', 'bar') key = 'Xmp.bar.foo' value = 'foobar' self.metadata[key] = value self.assert_(key in self.metadata.xmp_keys) def test_can_only_set_text_values(self): # At the moment custom namespaces only support setting simple text # values. register_namespace('foobar/', 'far') key = 'Xmp.far.foo' value = datetime.date.today() self.assertRaises(XmpValueError, self.metadata.__setitem__, key, value) value = datetime.datetime.now() self.assertRaises(XmpValueError, self.metadata.__setitem__, key, value) value = ['foo', 'bar'] self.assertRaises(XmpValueError, self.metadata.__setitem__, key, value) value = {'x-default': 'foo', 'fr-FR': 'bar'} self.assertRaises(XmpValueError, self.metadata.__setitem__, key, value) value = 'simple text value' self.metadata[key] = value def test_cannot_unregister_builtin(self): name = 'http://purl.org/dc/elements/1.1/' # DC builtin namespace self.assertRaises(KeyError, unregister_namespace, name) def test_cannot_unregister_inexistent(self): name = 'boofar/' self.assertRaises(KeyError, unregister_namespace, name) def test_cannot_unregister_twice(self): name = 'bleh/' prefix = 'ble' register_namespace(name, prefix) unregister_namespace(name) self.assertRaises(KeyError, unregister_namespace, name) def test_unregister(self): name = 'blah/' prefix = 'bla' register_namespace(name, prefix) unregister_namespace(name) def test_unregister_invalidates_keys_in_ns(self): name = 'blih/' prefix = 'bli' register_namespace(name, prefix) key = 'Xmp.%s.blu' % prefix self.metadata[key] = 'foobar' self.assert_(key in self.metadata.xmp_keys) unregister_namespace(name) self.assertRaises(KeyError, self.metadata.write) def test_unregister_all_ns(self): # Unregistering all custom namespaces will always succeed, even if there # are no custom namespaces registered. unregister_namespaces() name = 'blop/' prefix = 'blo' register_namespace(name, prefix) self.metadata['Xmp.%s.bar' % prefix] = 'foobar' name2 = 'blup/' prefix2 = 'blu' register_namespace(name2, prefix2) self.metadata['Xmp.%s.bar' % prefix2] = 'foobar' unregister_namespaces() self.assertRaises(KeyError, self.metadata.__setitem__, 'Xmp.%s.baz' % prefix, 'foobaz') self.assertRaises(KeyError, self.metadata.__setitem__, 'Xmp.%s.baz' % prefix2, 'foobaz')