19 files changed, 1628 insertions, 628 deletions
diff --git a/tagging/tests/.svn/all-wcprops b/tagging/tests/.svn/all-wcprops
new file mode 100644
index 0000000..1baeebb
--- /dev/null
+++ b/tagging/tests/.svn/all-wcprops
@@ -0,0 +1,35 @@
+K 25
+svn:wc:ra_dav:version-url
+V 37
+/svn/!svn/ver/137/trunk/tagging/tests
+END
+__init__.py
+K 25
+svn:wc:ra_dav:version-url
+V 48
+/svn/!svn/ver/93/trunk/tagging/tests/__init__.py
+END
+settings.py
+K 25
+svn:wc:ra_dav:version-url
+V 49
+/svn/!svn/ver/137/trunk/tagging/tests/settings.py
+END
+tests.py
+K 25
+svn:wc:ra_dav:version-url
+V 46
+/svn/!svn/ver/136/trunk/tagging/tests/tests.py
+END
+models.py
+K 25
+svn:wc:ra_dav:version-url
+V 47
+/svn/!svn/ver/134/trunk/tagging/tests/models.py
+END
+tags.txt
+K 25
+svn:wc:ra_dav:version-url
+V 45
+/svn/!svn/ver/93/trunk/tagging/tests/tags.txt
+END
diff --git a/tagging/tests/.svn/dir-prop-base b/tagging/tests/.svn/dir-prop-base
new file mode 100644
index 0000000..4cc643b
--- /dev/null
+++ b/tagging/tests/.svn/dir-prop-base
@@ -0,0 +1,6 @@
+K 10
+svn:ignore
+V 6
+*.pyc
+
+END
diff --git a/tagging/tests/.svn/entries b/tagging/tests/.svn/entries
new file mode 100644
index 0000000..c5dbe87
--- /dev/null
+++ b/tagging/tests/.svn/entries
@@ -0,0 +1,198 @@
+9
+
+dir
+147
+http://django-tagging.googlecode.com/svn/trunk/tagging/tests
+http://django-tagging.googlecode.com/svn
+
+
+
+2008-05-04T20:49:27.458486Z
+137
+jonathan.buchanan
+has-props
+
+svn:special svn:externals svn:needs-lock
+
+
+
+
+
+
+
+
+
+
+
+83e7428b-ec2a-0410-86f2-bf466d0e5e72
+
+__init__.py
+file
+
+
+
+
+2008-08-21T18:05:39.000000Z
+d41d8cd98f00b204e9800998ecf8427e
+2007-08-20T09:19:55.193228Z
+93
+jonathan.buchanan
+has-props
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+0
+
+settings.py
+file
+
+
+
+
+2008-08-21T18:05:39.000000Z
+26ca4cbc5221da0059baefad5fffee9a
+2008-05-04T20:49:27.458486Z
+137
+jonathan.buchanan
+has-props
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
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+592
+
+tests.py
+file
+
+
+
+
+2008-08-21T18:05:39.000000Z
+20371aa8a5c90be3db9309a777756a52
+2008-05-04T20:48:43.707358Z
+136
+jonathan.buchanan
+has-props
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+18675
+
+models.py
+file
+
+
+
+
+2008-08-21T18:05:39.000000Z
+25cb3f5db9701c5688534721a2d5e9ab
+2008-04-30T22:40:28.286321Z
+134
+jonathan.buchanan
+has-props
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+811
+
+tags.txt
+file
+
+
+
+
+2008-08-21T18:05:39.000000Z
+d4923e968e0692eac4758b364dba5c44
+2007-08-20T09:19:55.193228Z
+93
+jonathan.buchanan
+has-props
+
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+1382
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diff --git a/tagging/tests/.svn/format b/tagging/tests/.svn/format
new file mode 100644
index 0000000..ec63514
--- /dev/null
+++ b/tagging/tests/.svn/format
@@ -0,0 +1 @@
+9
diff --git a/tagging/tests/.svn/prop-base/__init__.py.svn-base b/tagging/tests/.svn/prop-base/__init__.py.svn-base
new file mode 100644
index 0000000..bdbd305
--- /dev/null
+++ b/tagging/tests/.svn/prop-base/__init__.py.svn-base
@@ -0,0 +1,5 @@
+K 13
+svn:eol-style
+V 6
+native
+END
diff --git a/tagging/tests/.svn/prop-base/models.py.svn-base b/tagging/tests/.svn/prop-base/models.py.svn-base
new file mode 100644
index 0000000..bdbd305
--- /dev/null
+++ b/tagging/tests/.svn/prop-base/models.py.svn-base
@@ -0,0 +1,5 @@
+K 13
+svn:eol-style
+V 6
+native
+END
diff --git a/tagging/tests/.svn/prop-base/settings.py.svn-base b/tagging/tests/.svn/prop-base/settings.py.svn-base
new file mode 100644
index 0000000..bdbd305
--- /dev/null
+++ b/tagging/tests/.svn/prop-base/settings.py.svn-base
@@ -0,0 +1,5 @@
+K 13
+svn:eol-style
+V 6
+native
+END
diff --git a/tagging/tests/.svn/prop-base/tags.txt.svn-base b/tagging/tests/.svn/prop-base/tags.txt.svn-base
new file mode 100644
index 0000000..bdbd305
--- /dev/null
+++ b/tagging/tests/.svn/prop-base/tags.txt.svn-base
@@ -0,0 +1,5 @@
+K 13
+svn:eol-style
+V 6
+native
+END
diff --git a/tagging/tests/.svn/prop-base/tests.py.svn-base b/tagging/tests/.svn/prop-base/tests.py.svn-base
new file mode 100644
index 0000000..bdbd305
--- /dev/null
+++ b/tagging/tests/.svn/prop-base/tests.py.svn-base
@@ -0,0 +1,5 @@
+K 13
+svn:eol-style
+V 6
+native
+END
diff --git a/tagging/tests/.svn/text-base/__init__.py.svn-base b/tagging/tests/.svn/text-base/__init__.py.svn-base
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tagging/tests/.svn/text-base/__init__.py.svn-base
diff --git a/tagging/tests/.svn/text-base/models.py.svn-base b/tagging/tests/.svn/text-base/models.py.svn-base
new file mode 100644
index 0000000..0708686
--- /dev/null
+++ b/tagging/tests/.svn/text-base/models.py.svn-base
@@ -0,0 +1,38 @@
+from django.db import models
+
+from tagging.fields import TagField
+
+class Perch(models.Model):
+    size = models.IntegerField()
+    smelly = models.BooleanField(default=True)
+
+class Parrot(models.Model):
+    state = models.CharField(max_length=50)
+    perch = models.ForeignKey(Perch, null=True)
+
+    def __unicode__(self):
+        return self.state
+
+    class Meta:
+        ordering = ['state']
+
+class Link(models.Model):
+    name = models.CharField(max_length=50)
+
+    def __unicode__(self):
+        return self.name
+
+    class Meta:
+        ordering = ['name']
+
+class Article(models.Model):
+    name = models.CharField(max_length=50)
+
+    def __unicode__(self):
+        return self.name
+
+    class Meta:
+        ordering = ['name']
+
+class FormTest(models.Model):
+    tags = TagField('Test', help_text='Test')
diff --git a/tagging/tests/.svn/text-base/settings.py.svn-base b/tagging/tests/.svn/text-base/settings.py.svn-base
new file mode 100644
index 0000000..26e659b
--- /dev/null
+++ b/tagging/tests/.svn/text-base/settings.py.svn-base
@@ -0,0 +1,27 @@
+import os
+DIRNAME = os.path.dirname(__file__)
+
+DEFAULT_CHARSET = 'utf-8'
+
+DATABASE_ENGINE = 'sqlite3'
+DATABASE_NAME = os.path.join(DIRNAME, 'tagging_test.db')
+
+#DATABASE_ENGINE = 'mysql'
+#DATABASE_NAME = 'tagging_test'
+#DATABASE_USER = 'root'
+#DATABASE_PASSWORD = ''
+#DATABASE_HOST = 'localhost'
+#DATABASE_PORT = '3306'
+
+#DATABASE_ENGINE = 'postgresql_psycopg2'
+#DATABASE_NAME = 'tagging_test'
+#DATABASE_USER = 'postgres'
+#DATABASE_PASSWORD = ''
+#DATABASE_HOST = 'localhost'
+#DATABASE_PORT = '5432'
+
+INSTALLED_APPS = (
+    'django.contrib.contenttypes',
+    'tagging',
+    'tagging.tests',
+)
diff --git a/tagging/tests/.svn/text-base/tags.txt.svn-base b/tagging/tests/.svn/text-base/tags.txt.svn-base
new file mode 100644
index 0000000..8543411
--- /dev/null
+++ b/tagging/tests/.svn/text-base/tags.txt.svn-base
@@ -0,0 +1,122 @@
+NewMedia 53
+Website 45
+PR 44
+Status 44
+Collaboration 41
+Drupal 34
+Journalism 31
+Transparency 30
+Theory 29
+Decentralization 25
+EchoChamberProject 24
+OpenSource 23
+Film 22
+Blog 21
+Interview 21
+Political 21
+Worldview 21
+Communications 19
+Conference 19
+Folksonomy 15
+MediaCriticism 15
+Volunteer 15
+Dialogue 13
+InternationalLaw 13
+Rosen 12
+Evolution 11
+KentBye 11
+Objectivity 11
+Plante 11
+ToDo 11
+Advisor 10
+Civics 10
+Roadmap 10
+Wilber 9
+About 8
+CivicSpace 8
+Ecosystem 8
+Choice 7
+Murphy 7
+Sociology 7
+ACH 6
+del.icio.us 6
+IntelligenceAnalysis 6
+Science 6
+Credibility 5
+Distribution 5
+Diversity 5
+Errors 5
+FinalCutPro 5
+Fundraising 5
+Law 5
+PhilosophyofScience 5
+Podcast 5
+PoliticalBias 5
+Activism 4
+Analysis 4
+CBS 4
+DeceptionDetection 4
+Editing 4
+History 4
+RSS 4
+Social 4
+Subjectivity 4
+Vlog 4
+ABC 3
+ALTubes 3
+Economics 3
+FCC 3
+NYT 3
+Sirota 3
+Sundance 3
+Training 3
+Wiki 3
+XML 3
+Borger 2
+Brody 2
+Deliberation 2
+EcoVillage 2
+Identity 2
+LAMP 2
+Lobe 2
+Maine 2
+May 2
+MediaLogic 2
+Metaphor 2
+Mitchell 2
+NBC 2
+OHanlon 2
+Psychology 2
+Queen 2
+Software 2
+SpiralDynamics 2
+Strobel 2
+Sustainability 2
+Transcripts 2
+Brown 1
+Buddhism 1
+Community 1
+DigitalDivide 1
+Donnelly 1
+Education 1
+FairUse 1
+FireANT 1
+Google 1
+HumanRights 1
+KM 1
+Kwiatkowski 1
+Landay 1
+Loiseau 1
+Math 1
+Music 1
+Nature 1
+Schechter 1
+Screencast 1
+Sivaraksa 1
+Skype 1
+SocialCapital 1
+TagCloud 1
+Thielmann 1
+Thomas 1
+Tiger 1
+Wedgwood 1
+\ No newline at end of file
diff --git a/tagging/tests/.svn/text-base/tests.py.svn-base b/tagging/tests/.svn/text-base/tests.py.svn-base
new file mode 100644
index 0000000..574fa92
--- /dev/null
+++ b/tagging/tests/.svn/text-base/tests.py.svn-base
@@ -0,0 +1,495 @@
+# -*- coding: utf-8 -*-
+tests = r"""
+>>> import os
+>>> from django import newforms as forms
+>>> from tagging.forms import TagField
+>>> from tagging import settings
+>>> from tagging.models import Tag, TaggedItem
+>>> from tagging.tests.models import Article, Link, Perch, Parrot, FormTest
+>>> from tagging.utils import calculate_cloud, get_tag_list, get_tag, parse_tag_input
+>>> from tagging.utils import LINEAR
+>>> from tagging.validators import isTagList, isTag
+
+#############
+# Utilities #
+#############
+
+# Tag input ###################################################################
+
+# Simple space-delimited tags
+>>> parse_tag_input('one')
+[u'one']
+>>> parse_tag_input('one two')
+[u'one', u'two']
+>>> parse_tag_input('one two three')
+[u'one', u'three', u'two']
+>>> parse_tag_input('one one two two')
+[u'one', u'two']
+
+# Comma-delimited multiple words - an unquoted comma in the input will trigger
+# this.
+>>> parse_tag_input(',one')
+[u'one']
+>>> parse_tag_input(',one two')
+[u'one two']
+>>> parse_tag_input(',one two three')
+[u'one two three']
+>>> parse_tag_input('a-one, a-two and a-three')
+[u'a-one', u'a-two and a-three']
+
+# Double-quoted multiple words - a completed quote will trigger this.
+# Unclosed quotes are ignored.
+>>> parse_tag_input('"one')
+[u'one']
+>>> parse_tag_input('"one two')
+[u'one', u'two']
+>>> parse_tag_input('"one two three')
+[u'one', u'three', u'two']
+>>> parse_tag_input('"one two"')
+[u'one two']
+>>> parse_tag_input('a-one "a-two and a-three"')
+[u'a-one', u'a-two and a-three']
+
+# No loose commas - split on spaces
+>>> parse_tag_input('one two "thr,ee"')
+[u'one', u'thr,ee', u'two']
+
+# Loose commas - split on commas
+>>> parse_tag_input('"one", two three')
+[u'one', u'two three']
+
+# Double quotes can contain commas
+>>> parse_tag_input('a-one "a-two, and a-three"')
+[u'a-one', u'a-two, and a-three']
+>>> parse_tag_input('"two", one, one, two, "one"')
+[u'one', u'two']
+
+# Bad users! Naughty users!
+>>> parse_tag_input(None)
+[]
+>>> parse_tag_input('')
+[]
+>>> parse_tag_input('"')
+[]
+>>> parse_tag_input('""')
+[]
+>>> parse_tag_input('"' * 7)
+[]
+>>> parse_tag_input(',,,,,,')
+[]
+>>> parse_tag_input('",",",",",",","')
+[u',']
+>>> parse_tag_input('a-one "a-two" and "a-three')
+[u'a-one', u'a-three', u'a-two', u'and']
+
+# Normalised Tag list input ###################################################
+>>> cheese = Tag.objects.create(name='cheese')
+>>> toast = Tag.objects.create(name='toast')
+>>> get_tag_list(cheese)
+[<Tag: cheese>]
+>>> get_tag_list('cheese toast')
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list('cheese,toast')
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list([])
+[]
+>>> get_tag_list(['cheese', 'toast'])
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list([cheese.id, toast.id])
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list(['cheese', 'toast', 'ŠĐĆŽćžšđ'])
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list([cheese, toast])
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list((cheese, toast))
+(<Tag: cheese>, <Tag: toast>)
+>>> get_tag_list(Tag.objects.filter(name__in=['cheese', 'toast']))
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list(['cheese', toast])
+Traceback (most recent call last):
+    ...
+ValueError: If a list or tuple of tags is provided, they must all be tag names, Tag objects or Tag ids.
+>>> get_tag_list(29)
+Traceback (most recent call last):
+    ...
+ValueError: The tag input given was invalid.
+
+# Normalised Tag input
+>>> get_tag(cheese)
+<Tag: cheese>
+>>> get_tag('cheese')
+<Tag: cheese>
+>>> get_tag(cheese.id)
+<Tag: cheese>
+>>> get_tag('mouse')
+
+# Tag clouds ##################################################################
+>>> tags = []
+>>> for line in open(os.path.join(os.path.dirname(__file__), 'tags.txt')).readlines():
+...     name, count = line.rstrip().split()
+...     tag = Tag(name=name)
+...     tag.count = int(count)
+...     tags.append(tag)
+
+>>> sizes = {}
+>>> for tag in calculate_cloud(tags, steps=5):
+...     sizes[tag.font_size] = sizes.get(tag.font_size, 0) + 1
+
+# This isn't a pre-calculated test, just making sure it's consistent
+>>> sizes
+{1: 48, 2: 30, 3: 19, 4: 15, 5: 10}
+
+>>> sizes = {}
+>>> for tag in calculate_cloud(tags, steps=5, distribution=LINEAR):
+...     sizes[tag.font_size] = sizes.get(tag.font_size, 0) + 1
+
+# This isn't a pre-calculated test, just making sure it's consistent
+>>> sizes
+{1: 97, 2: 12, 3: 7, 4: 2, 5: 4}
+
+>>> calculate_cloud(tags, steps=5, distribution='cheese')
+Traceback (most recent call last):
+    ...
+ValueError: Invalid distribution algorithm specified: cheese.
+
+# Validators ##################################################################
+
+>>> isTagList('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar', {})
+Traceback (most recent call last):
+    ...
+ValidationError: [u'Each tag may be no more than 50 characters long.']
+
+>>> isTag('"test"', {})
+>>> isTag(',test', {})
+>>> isTag('f o o', {})
+Traceback (most recent call last):
+    ...
+ValidationError: [u'Multiple tags were given.']
+>>> isTagList('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar', {})
+Traceback (most recent call last):
+    ...
+ValidationError: [u'Each tag may be no more than 50 characters long.']
+
+###########
+# Tagging #
+###########
+
+# Basic tagging ###############################################################
+
+>>> dead = Parrot.objects.create(state='dead')
+>>> Tag.objects.update_tags(dead, 'foo,bar,"ter"')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: foo>, <Tag: ter>]
+>>> Tag.objects.update_tags(dead, '"foo" bar "baz"')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>]
+>>> Tag.objects.add_tag(dead, 'foo')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>]
+>>> Tag.objects.add_tag(dead, 'zip')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>, <Tag: zip>]
+>>> Tag.objects.add_tag(dead, '    ')
+Traceback (most recent call last):
+    ...
+AttributeError: No tags were given: "    ".
+>>> Tag.objects.add_tag(dead, 'one two')
+Traceback (most recent call last):
+    ...
+AttributeError: Multiple tags were given: "one two".
+
+# Note that doctest in Python 2.4 (and maybe 2.5?) doesn't support non-ascii
+# characters in output, so we're displaying the repr() here.
+>>> Tag.objects.update_tags(dead, 'ŠĐĆŽćžšđ')
+>>> repr(Tag.objects.get_for_object(dead))
+'[<Tag: \xc5\xa0\xc4\x90\xc4\x86\xc5\xbd\xc4\x87\xc5\xbe\xc5\xa1\xc4\x91>]'
+
+>>> Tag.objects.update_tags(dead, None)
+>>> Tag.objects.get_for_object(dead)
+[]
+
+# Using a model's TagField
+>>> f1 = FormTest.objects.create(tags=u'test3 test2 test1')
+>>> Tag.objects.get_for_object(f1)
+[<Tag: test1>, <Tag: test2>, <Tag: test3>]
+>>> f1.tags = u'test4'
+>>> f1.save()
+>>> Tag.objects.get_for_object(f1)
+[<Tag: test4>]
+>>> f1.tags = ''
+>>> f1.save()
+>>> Tag.objects.get_for_object(f1)
+[]
+
+# Forcing tags to lowercase
+>>> settings.FORCE_LOWERCASE_TAGS = True
+>>> Tag.objects.update_tags(dead, 'foO bAr Ter')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: foo>, <Tag: ter>]
+>>> Tag.objects.update_tags(dead, 'foO bAr baZ')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>]
+>>> Tag.objects.add_tag(dead, 'FOO')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>]
+>>> Tag.objects.add_tag(dead, 'Zip')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>, <Tag: zip>]
+>>> Tag.objects.update_tags(dead, None)
+>>> f1.tags = u'TEST5'
+>>> f1.save()
+>>> Tag.objects.get_for_object(f1)
+[<Tag: test5>]
+>>> f1.tags
+u'test5'
+
+# Retrieving tags by Model ####################################################
+
+>>> Tag.objects.usage_for_model(Parrot)
+[]
+>>> parrot_details = (
+...     ('pining for the fjords', 9, True,  'foo bar'),
+...     ('passed on',             6, False, 'bar baz ter'),
+...     ('no more',               4, True,  'foo ter'),
+...     ('late',                  2, False, 'bar ter'),
+... )
+
+>>> for state, perch_size, perch_smelly, tags in parrot_details:
+...     perch = Perch.objects.create(size=perch_size, smelly=perch_smelly)
+...     parrot = Parrot.objects.create(state=state, perch=perch)
+...     Tag.objects.update_tags(parrot, tags)
+
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True)]
+[(u'bar', 3), (u'baz', 1), (u'foo', 2), (u'ter', 3)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, min_count=2)]
+[(u'bar', 3), (u'foo', 2), (u'ter', 3)]
+
+# Limiting results to a subset of the model
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(state='no more'))]
+[(u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(state__startswith='p'))]
+[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(perch__size__gt=4))]
+[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(perch__smelly=True))]
+[(u'bar', 1), (u'foo', 2), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, min_count=2, filters=dict(perch__smelly=True))]
+[(u'foo', 2)]
+>>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_model(Parrot, filters=dict(perch__size__gt=4))]
+[(u'bar', False), (u'baz', False), (u'foo', False), (u'ter', False)]
+>>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_model(Parrot, filters=dict(perch__size__gt=99))]
+[]
+
+# Related tags
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, counts=True)]
+[(u'baz', 1), (u'foo', 1), (u'ter', 2)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, min_count=2)]
+[(u'ter', 2)]
+>>> [tag.name for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, counts=False)]
+[u'baz', u'foo', u'ter']
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar', 'ter']), Parrot, counts=True)]
+[(u'baz', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar', 'ter', 'baz']), Parrot, counts=True)]
+[]
+
+# Once again, with feeling (strings)
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model('bar', Parrot, counts=True)]
+[(u'baz', 1), (u'foo', 1), (u'ter', 2)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model('bar', Parrot, min_count=2)]
+[(u'ter', 2)]
+>>> [tag.name for tag in Tag.objects.related_for_model('bar', Parrot, counts=False)]
+[u'baz', u'foo', u'ter']
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(['bar', 'ter'], Parrot, counts=True)]
+[(u'baz', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(['bar', 'ter', 'baz'], Parrot, counts=True)]
+[]
+
+# Retrieving tagged objects by Model ##########################################
+
+>>> foo = Tag.objects.get(name='foo')
+>>> bar = Tag.objects.get(name='bar')
+>>> baz = Tag.objects.get(name='baz')
+>>> ter = Tag.objects.get(name='ter')
+>>> TaggedItem.objects.get_by_model(Parrot, foo)
+[<Parrot: no more>, <Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_by_model(Parrot, bar)
+[<Parrot: late>, <Parrot: passed on>, <Parrot: pining for the fjords>]
+
+# Intersections are supported
+>>> TaggedItem.objects.get_by_model(Parrot, [foo, baz])
+[]
+>>> TaggedItem.objects.get_by_model(Parrot, [foo, bar])
+[<Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_by_model(Parrot, [bar, ter])
+[<Parrot: late>, <Parrot: passed on>]
+
+# Issue 114 - Intersection with non-existant tags
+>>> TaggedItem.objects.get_intersection_by_model(Parrot, [])
+[]
+
+# You can also pass Tag QuerySets
+>>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['foo', 'baz']))
+[]
+>>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['foo', 'bar']))
+[<Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['bar', 'ter']))
+[<Parrot: late>, <Parrot: passed on>]
+
+# You can also pass strings and lists of strings
+>>> TaggedItem.objects.get_by_model(Parrot, 'foo baz')
+[]
+>>> TaggedItem.objects.get_by_model(Parrot, 'foo bar')
+[<Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_by_model(Parrot, 'bar ter')
+[<Parrot: late>, <Parrot: passed on>]
+>>> TaggedItem.objects.get_by_model(Parrot, ['foo', 'baz'])
+[]
+>>> TaggedItem.objects.get_by_model(Parrot, ['foo', 'bar'])
+[<Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_by_model(Parrot, ['bar', 'ter'])
+[<Parrot: late>, <Parrot: passed on>]
+
+# Issue 50 - Get by non-existent tag
+>>> TaggedItem.objects.get_by_model(Parrot, 'argatrons')
+[]
+
+# Unions
+>>> TaggedItem.objects.get_union_by_model(Parrot, ['foo', 'ter'])
+[<Parrot: late>, <Parrot: no more>, <Parrot: passed on>, <Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_union_by_model(Parrot, ['bar', 'baz'])
+[<Parrot: late>, <Parrot: passed on>, <Parrot: pining for the fjords>]
+
+# Issue 114 - Union with non-existant tags
+>>> TaggedItem.objects.get_union_by_model(Parrot, [])
+[]
+
+# Retrieving related objects by Model #########################################
+
+# Related instances of the same Model
+>>> l1 = Link.objects.create(name='link 1')
+>>> Tag.objects.update_tags(l1, 'tag1 tag2 tag3 tag4 tag5')
+>>> l2 = Link.objects.create(name='link 2')
+>>> Tag.objects.update_tags(l2, 'tag1 tag2 tag3')
+>>> l3 = Link.objects.create(name='link 3')
+>>> Tag.objects.update_tags(l3, 'tag1')
+>>> l4 = Link.objects.create(name='link 4')
+>>> TaggedItem.objects.get_related(l1, Link)
+[<Link: link 2>, <Link: link 3>]
+>>> TaggedItem.objects.get_related(l1, Link, num=1)
+[<Link: link 2>]
+>>> TaggedItem.objects.get_related(l4, Link)
+[]
+
+# Limit related items
+>>> TaggedItem.objects.get_related(l1, Link.objects.exclude(name='link 3'))
+[<Link: link 2>]
+
+# Related instance of a different Model
+>>> a1 = Article.objects.create(name='article 1')
+>>> Tag.objects.update_tags(a1, 'tag1 tag2 tag3 tag4')
+>>> TaggedItem.objects.get_related(a1, Link)
+[<Link: link 1>, <Link: link 2>, <Link: link 3>]
+>>> Tag.objects.update_tags(a1, 'tag6')
+>>> TaggedItem.objects.get_related(a1, Link)
+[]
+
+################
+# Model Fields #
+################
+
+# TagField ####################################################################
+
+# Ensure that automatically created forms use TagField
+>>> class TestForm(forms.ModelForm):
+...     class Meta:
+...         model = FormTest
+>>> form = TestForm()
+>>> form.fields['tags'].__class__.__name__
+'TagField'
+
+# Recreating string representaions of tag lists ###############################
+>>> plain = Tag.objects.create(name='plain')
+>>> spaces = Tag.objects.create(name='spa ces')
+>>> comma = Tag.objects.create(name='com,ma')
+
+>>> from tagging.utils import edit_string_for_tags
+>>> edit_string_for_tags([plain])
+u'plain'
+>>> edit_string_for_tags([plain, spaces])
+u'plain, spa ces'
+>>> edit_string_for_tags([plain, spaces, comma])
+u'plain, spa ces, "com,ma"'
+>>> edit_string_for_tags([plain, comma])
+u'plain "com,ma"'
+>>> edit_string_for_tags([comma, spaces])
+u'"com,ma", spa ces'
+
+###############
+# Form Fields #
+###############
+
+>>> t = TagField()
+>>> t.clean('foo')
+u'foo'
+>>> t.clean('foo bar baz')
+u'foo bar baz'
+>>> t.clean('foo,bar,baz')
+u'foo,bar,baz'
+>>> t.clean('foo, bar, baz')
+u'foo, bar, baz'
+>>> t.clean('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvb bar')
+u'foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvb bar'
+>>> t.clean('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar')
+Traceback (most recent call last):
+    ...
+ValidationError: [u'Each tag may be no more than 50 characters long.']
+"""
+
+tests_pre_qsrf = tests + r"""
+# Limiting results to a queryset
+>>> Tag.objects.usage_for_queryset(Parrot.objects.filter())
+Traceback (most recent call last):
+    ...
+AttributeError: 'TagManager.usage_for_queryset' is not compatible with pre-queryset-refactor versions of Django.
+"""
+
+tests_post_qsrf = tests + r"""
+>>> from django.db.models import Q
+
+# Limiting results to a queryset
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(state='no more'), counts=True)]
+[(u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(state__startswith='p'), counts=True)]
+[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(perch__size__gt=4), counts=True)]
+[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(perch__smelly=True), counts=True)]
+[(u'bar', 1), (u'foo', 2), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(perch__smelly=True), min_count=2)]
+[(u'foo', 2)]
+>>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(perch__size__gt=4))]
+[(u'bar', False), (u'baz', False), (u'foo', False), (u'ter', False)]
+>>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(perch__size__gt=99))]
+[]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(Q(perch__size__gt=6) | Q(state__startswith='l')), counts=True)]
+[(u'bar', 2), (u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(Q(perch__size__gt=6) | Q(state__startswith='l')), min_count=2)]
+[(u'bar', 2)]
+>>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(Q(perch__size__gt=6) | Q(state__startswith='l')))]
+[(u'bar', False), (u'foo', False), (u'ter', False)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.exclude(state='passed on'), counts=True)]
+[(u'bar', 2), (u'foo', 2), (u'ter', 2)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.exclude(state__startswith='p'), min_count=2)]
+[(u'ter', 2)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.exclude(Q(perch__size__gt=6) | Q(perch__smelly=False)), counts=True)]
+[(u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.exclude(perch__smelly=True).filter(state__startswith='l'), counts=True)]
+[(u'bar', 1), (u'ter', 1)]
+"""
+
+try:
+    from django.db.models.query import parse_lookup
+except ImportError:
+    __test__ = {'post-qsrf': tests_post_qsrf}
+else:
+    __test__ = {'pre-qsrf': tests_pre_qsrf}
diff --git a/tagging/tests/models.py b/tagging/tests/models.py
index 69a5c7b..0708686 100644
--- a/tagging/tests/models.py
+++ b/tagging/tests/models.py
@@ -1,38 +1,38 @@
-from django.db import models
-
-from tagging.fields import TagField
-
-class Perch(models.Model):
-    size = models.IntegerField()
-    smelly = models.BooleanField(default=True)
-
-class Parrot(models.Model):
-    state = models.CharField(max_length=50)
-    perch = models.ForeignKey(Perch, null=True)
-
-    def __unicode__(self):
-        return self.state
-
-    class Meta:
-        ordering = ['state']
-
-class Link(models.Model):
-    name = models.CharField(max_length=50)
-
-    def __unicode__(self):
-        return self.name
-
-    class Meta:
-        ordering = ['name']
-
-class Article(models.Model):
-    name = models.CharField(max_length=50)
-
-    def __unicode__(self):
-        return self.name
-
-    class Meta:
-        ordering = ['name']
-
-class FormTest(models.Model):
-    tags = TagField()
+from django.db import models
+
+from tagging.fields import TagField
+
+class Perch(models.Model):
+    size = models.IntegerField()
+    smelly = models.BooleanField(default=True)
+
+class Parrot(models.Model):
+    state = models.CharField(max_length=50)
+    perch = models.ForeignKey(Perch, null=True)
+
+    def __unicode__(self):
+        return self.state
+
+    class Meta:
+        ordering = ['state']
+
+class Link(models.Model):
+    name = models.CharField(max_length=50)
+
+    def __unicode__(self):
+        return self.name
+
+    class Meta:
+        ordering = ['name']
+
+class Article(models.Model):
+    name = models.CharField(max_length=50)
+
+    def __unicode__(self):
+        return self.name
+
+    class Meta:
+        ordering = ['name']
+
+class FormTest(models.Model):
+    tags = TagField('Test', help_text='Test')
diff --git a/tagging/tests/runtests.py b/tagging/tests/runtests.py
deleted file mode 100644
index e66ee86..0000000
--- a/tagging/tests/runtests.py
+++ /dev/null
@@ -1,8 +0,0 @@
-import os, sys
-os.environ['DJANGO_SETTINGS_MODULE'] = 'tagging.tests.settings'
-
-from django.test.simple import run_tests
-
-failures = run_tests(None, verbosity=9)
-if failures:
-    sys.exit(failures)
diff --git a/tagging/tests/settings.py b/tagging/tests/settings.py
index 93ba4b0..26e659b 100644
--- a/tagging/tests/settings.py
+++ b/tagging/tests/settings.py
@@ -1,27 +1,27 @@
-import os
-DIRNAME = os.path.dirname(__file__)
-
-DEFAULT_CHARSET = 'utf-8'
-
-DATABASE_ENGINE = 'sqlite3'
-DATABASE_NAME = os.path.join(DIRNAME, 'tagging_test.db')
-
-#DATABASE_ENGINE = 'mysql'
-#DATABASE_NAME = 'tagging_test'
-#DATABASE_USER = 'root'
-#DATABASE_PASSWORD = ''
-#DATABASE_HOST = 'localhost'
-#DATABASE_PORT = '3306'
-
-#DATABASE_ENGINE = 'postgresql_psycopg2'
-#DATABASE_NAME = 'tagging_test'
-#DATABASE_USER = 'postgres'
-#DATABASE_PASSWORD = ''
-#DATABASE_HOST = 'localhost'
-#DATABASE_PORT = '5432'
-
-INSTALLED_APPS = (
-    'django.contrib.contenttypes',
-    'tagging',
-    'tagging.tests',
-)
+import os
+DIRNAME = os.path.dirname(__file__)
+
+DEFAULT_CHARSET = 'utf-8'
+
+DATABASE_ENGINE = 'sqlite3'
+DATABASE_NAME = os.path.join(DIRNAME, 'tagging_test.db')
+
+#DATABASE_ENGINE = 'mysql'
+#DATABASE_NAME = 'tagging_test'
+#DATABASE_USER = 'root'
+#DATABASE_PASSWORD = ''
+#DATABASE_HOST = 'localhost'
+#DATABASE_PORT = '3306'
+
+#DATABASE_ENGINE = 'postgresql_psycopg2'
+#DATABASE_NAME = 'tagging_test'
+#DATABASE_USER = 'postgres'
+#DATABASE_PASSWORD = ''
+#DATABASE_HOST = 'localhost'
+#DATABASE_PORT = '5432'
+
+INSTALLED_APPS = (
+    'django.contrib.contenttypes',
+    'tagging',
+    'tagging.tests',
+)
diff --git a/tagging/tests/tags.txt b/tagging/tests/tags.txt
index 61bfd9e..8543411 100644
--- a/tagging/tests/tags.txt
+++ b/tagging/tests/tags.txt
@@ -1,122 +1,122 @@
-NewMedia 53
-Website 45
-PR 44
-Status 44
-Collaboration 41
-Drupal 34
-Journalism 31
-Transparency 30
-Theory 29
-Decentralization 25
-EchoChamberProject 24
-OpenSource 23
-Film 22
-Blog 21
-Interview 21
-Political 21
-Worldview 21
-Communications 19
-Conference 19
-Folksonomy 15
-MediaCriticism 15
-Volunteer 15
-Dialogue 13
-InternationalLaw 13
-Rosen 12
-Evolution 11
-KentBye 11
-Objectivity 11
-Plante 11
-ToDo 11
-Advisor 10
-Civics 10
-Roadmap 10
-Wilber 9
-About 8
-CivicSpace 8
-Ecosystem 8
-Choice 7
-Murphy 7
-Sociology 7
-ACH 6
-del.icio.us 6
-IntelligenceAnalysis 6
-Science 6
-Credibility 5
-Distribution 5
-Diversity 5
-Errors 5
-FinalCutPro 5
-Fundraising 5
-Law 5
-PhilosophyofScience 5
-Podcast 5
-PoliticalBias 5
-Activism 4
-Analysis 4
-CBS 4
-DeceptionDetection 4
-Editing 4
-History 4
-RSS 4
-Social 4
-Subjectivity 4
-Vlog 4
-ABC 3
-ALTubes 3
-Economics 3
-FCC 3
-NYT 3
-Sirota 3
-Sundance 3
-Training 3
-Wiki 3
-XML 3
-Borger 2
-Brody 2
-Deliberation 2
-EcoVillage 2
-Identity 2
-LAMP 2
-Lobe 2
-Maine 2
-May 2
-MediaLogic 2
-Metaphor 2
-Mitchell 2
-NBC 2
-OHanlon 2
-Psychology 2
-Queen 2
-Software 2
-SpiralDynamics 2
-Strobel 2
-Sustainability 2
-Transcripts 2
-Brown 1
-Buddhism 1
-Community 1
-DigitalDivide 1
-Donnelly 1
-Education 1
-FairUse 1
-FireANT 1
-Google 1
-HumanRights 1
-KM 1
-Kwiatkowski 1
-Landay 1
-Loiseau 1
-Math 1
-Music 1
-Nature 1
-Schechter 1
-Screencast 1
-Sivaraksa 1
-Skype 1
-SocialCapital 1
-TagCloud 1
-Thielmann 1
-Thomas 1
-Tiger 1
+NewMedia 53
+Website 45
+PR 44
+Status 44
+Collaboration 41
+Drupal 34
+Journalism 31
+Transparency 30
+Theory 29
+Decentralization 25
+EchoChamberProject 24
+OpenSource 23
+Film 22
+Blog 21
+Interview 21
+Political 21
+Worldview 21
+Communications 19
+Conference 19
+Folksonomy 15
+MediaCriticism 15
+Volunteer 15
+Dialogue 13
+InternationalLaw 13
+Rosen 12
+Evolution 11
+KentBye 11
+Objectivity 11
+Plante 11
+ToDo 11
+Advisor 10
+Civics 10
+Roadmap 10
+Wilber 9
+About 8
+CivicSpace 8
+Ecosystem 8
+Choice 7
+Murphy 7
+Sociology 7
+ACH 6
+del.icio.us 6
+IntelligenceAnalysis 6
+Science 6
+Credibility 5
+Distribution 5
+Diversity 5
+Errors 5
+FinalCutPro 5
+Fundraising 5
+Law 5
+PhilosophyofScience 5
+Podcast 5
+PoliticalBias 5
+Activism 4
+Analysis 4
+CBS 4
+DeceptionDetection 4
+Editing 4
+History 4
+RSS 4
+Social 4
+Subjectivity 4
+Vlog 4
+ABC 3
+ALTubes 3
+Economics 3
+FCC 3
+NYT 3
+Sirota 3
+Sundance 3
+Training 3
+Wiki 3
+XML 3
+Borger 2
+Brody 2
+Deliberation 2
+EcoVillage 2
+Identity 2
+LAMP 2
+Lobe 2
+Maine 2
+May 2
+MediaLogic 2
+Metaphor 2
+Mitchell 2
+NBC 2
+OHanlon 2
+Psychology 2
+Queen 2
+Software 2
+SpiralDynamics 2
+Strobel 2
+Sustainability 2
+Transcripts 2
+Brown 1
+Buddhism 1
+Community 1
+DigitalDivide 1
+Donnelly 1
+Education 1
+FairUse 1
+FireANT 1
+Google 1
+HumanRights 1
+KM 1
+Kwiatkowski 1
+Landay 1
+Loiseau 1
+Math 1
+Music 1
+Nature 1
+Schechter 1
+Screencast 1
+Sivaraksa 1
+Skype 1
+SocialCapital 1
+TagCloud 1
+Thielmann 1
+Thomas 1
+Tiger 1
 Wedgwood 1
 \ No newline at end of file
diff --git a/tagging/tests/tests.py b/tagging/tests/tests.py
index b1c8032..574fa92 100644
--- a/tagging/tests/tests.py
+++ b/tagging/tests/tests.py
@@ -1,434 +1,495 @@
-# -*- coding: utf-8 -*-
-r"""
->>> import os
->>> from django import newforms as forms
->>> from tagging.forms import TagField
->>> from tagging import settings
->>> from tagging.models import Tag, TaggedItem
->>> from tagging.tests.models import Article, Link, Perch, Parrot, FormTest
->>> from tagging.utils import calculate_cloud, get_tag_list, get_tag, parse_tag_input
->>> from tagging.utils import LINEAR
->>> from tagging.validators import isTagList, isTag
-
-#############
-# Utilities #
-#############
-
-# Tag input ###################################################################
-
-# Simple space-delimited tags
->>> parse_tag_input('one')
-[u'one']
->>> parse_tag_input('one two')
-[u'one', u'two']
->>> parse_tag_input('one two three')
-[u'one', u'three', u'two']
->>> parse_tag_input('one one two two')
-[u'one', u'two']
-
-# Comma-delimited multiple words - an unquoted comma in the input will trigger
-# this.
->>> parse_tag_input(',one')
-[u'one']
->>> parse_tag_input(',one two')
-[u'one two']
->>> parse_tag_input(',one two three')
-[u'one two three']
->>> parse_tag_input('a-one, a-two and a-three')
-[u'a-one', u'a-two and a-three']
-
-# Double-quoted multiple words - a completed quote will trigger this.
-# Unclosed quotes are ignored.
->>> parse_tag_input('"one')
-[u'one']
->>> parse_tag_input('"one two')
-[u'one', u'two']
->>> parse_tag_input('"one two three')
-[u'one', u'three', u'two']
->>> parse_tag_input('"one two"')
-[u'one two']
->>> parse_tag_input('a-one "a-two and a-three"')
-[u'a-one', u'a-two and a-three']
-
-# No loose commas - split on spaces
->>> parse_tag_input('one two "thr,ee"')
-[u'one', u'thr,ee', u'two']
-
-# Loose commas - split on commas
->>> parse_tag_input('"one", two three')
-[u'one', u'two three']
-
-# Double quotes can contain commas
->>> parse_tag_input('a-one "a-two, and a-three"')
-[u'a-one', u'a-two, and a-three']
->>> parse_tag_input('"two", one, one, two, "one"')
-[u'one', u'two']
-
-# Bad users! Naughty users!
->>> parse_tag_input(None)
-[]
->>> parse_tag_input('')
-[]
->>> parse_tag_input('"')
-[]
->>> parse_tag_input('""')
-[]
->>> parse_tag_input('"' * 7)
-[]
->>> parse_tag_input(',,,,,,')
-[]
->>> parse_tag_input('",",",",",",","')
-[u',']
->>> parse_tag_input('a-one "a-two" and "a-three')
-[u'a-one', u'a-three', u'a-two', u'and']
-
-# Normalised Tag list input ###################################################
->>> cheese = Tag.objects.create(name='cheese')
->>> toast = Tag.objects.create(name='toast')
->>> get_tag_list(cheese)
-[<Tag: cheese>]
->>> get_tag_list('cheese toast')
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list('cheese,toast')
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list([])
-[]
->>> get_tag_list(['cheese', 'toast'])
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list([cheese.id, toast.id])
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list(['cheese', 'toast', 'ŠĐĆŽćžšđ'])
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list([cheese, toast])
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list((cheese, toast))
-(<Tag: cheese>, <Tag: toast>)
->>> get_tag_list(Tag.objects.filter(name__in=['cheese', 'toast']))
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list(['cheese', toast])
-Traceback (most recent call last):
-    ...
-ValueError: If a list or tuple of tags is provided, they must all be tag names, Tag objects or Tag ids.
->>> get_tag_list(29)
-Traceback (most recent call last):
-    ...
-ValueError: The tag input given was invalid.
-
-# Normalised Tag input
->>> get_tag(cheese)
-<Tag: cheese>
->>> get_tag('cheese')
-<Tag: cheese>
->>> get_tag(cheese.id)
-<Tag: cheese>
->>> get_tag('mouse')
-
-# Tag clouds ##################################################################
->>> tags = []
->>> for line in open(os.path.join(os.path.dirname(__file__), 'tags.txt')).readlines():
-...     name, count = line.rstrip().split()
-...     tag = Tag(name=name)
-...     tag.count = int(count)
-...     tags.append(tag)
-
->>> sizes = {}
->>> for tag in calculate_cloud(tags, steps=5):
-...     sizes[tag.font_size] = sizes.get(tag.font_size, 0) + 1
-
-# This isn't a pre-calculated test, just making sure it's consistent
->>> sizes
-{1: 48, 2: 30, 3: 19, 4: 15, 5: 10}
-
->>> sizes = {}
->>> for tag in calculate_cloud(tags, steps=5, distribution=LINEAR):
-...     sizes[tag.font_size] = sizes.get(tag.font_size, 0) + 1
-
-# This isn't a pre-calculated test, just making sure it's consistent
->>> sizes
-{1: 97, 2: 12, 3: 7, 4: 2, 5: 4}
-
->>> calculate_cloud(tags, steps=5, distribution='cheese')
-Traceback (most recent call last):
-    ...
-ValueError: Invalid distribution algorithm specified: cheese.
-
-# Validators ##################################################################
-
->>> isTagList('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar', {})
-Traceback (most recent call last):
-    ...
-ValidationError: [u'Each tag may be no more than 50 characters long.']
-
->>> isTag('"test"', {})
->>> isTag(',test', {})
->>> isTag('f o o', {})
-Traceback (most recent call last):
-    ...
-ValidationError: [u'Multiple tags were given.']
->>> isTagList('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar', {})
-Traceback (most recent call last):
-    ...
-ValidationError: [u'Each tag may be no more than 50 characters long.']
-
-###########
-# Tagging #
-###########
-
-# Basic tagging ###############################################################
-
->>> dead = Parrot.objects.create(state='dead')
->>> Tag.objects.update_tags(dead, 'foo,bar,"ter"')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: foo>, <Tag: ter>]
->>> Tag.objects.update_tags(dead, '"foo" bar "baz"')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>]
->>> Tag.objects.add_tag(dead, 'foo')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>]
->>> Tag.objects.add_tag(dead, 'zip')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>, <Tag: zip>]
->>> Tag.objects.add_tag(dead, '    ')
-Traceback (most recent call last):
-    ...
-AttributeError: No tags were given: "    ".
->>> Tag.objects.add_tag(dead, 'one two')
-Traceback (most recent call last):
-    ...
-AttributeError: Multiple tags were given: "one two".
-
-# Note that doctest in Python 2.4 (and maybe 2.5?) doesn't support non-ascii
-# characters in output, so we're displaying the repr() here.
->>> Tag.objects.update_tags(dead, 'ŠĐĆŽćžšđ')
->>> repr(Tag.objects.get_for_object(dead))
-'[<Tag: \xc5\xa0\xc4\x90\xc4\x86\xc5\xbd\xc4\x87\xc5\xbe\xc5\xa1\xc4\x91>]'
-
->>> Tag.objects.update_tags(dead, None)
->>> Tag.objects.get_for_object(dead)
-[]
-
-# Using a model's TagField
->>> f1 = FormTest.objects.create(tags=u'test3 test2 test1')
->>> Tag.objects.get_for_object(f1)
-[<Tag: test1>, <Tag: test2>, <Tag: test3>]
->>> f1.tags = u'test4'
->>> f1.save()
->>> Tag.objects.get_for_object(f1)
-[<Tag: test4>]
->>> f1.tags = ''
->>> f1.save()
->>> Tag.objects.get_for_object(f1)
-[]
-
-# Forcing tags to lowercase
->>> settings.FORCE_LOWERCASE_TAGS = True
->>> Tag.objects.update_tags(dead, 'foO bAr Ter')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: foo>, <Tag: ter>]
->>> Tag.objects.update_tags(dead, 'foO bAr baZ')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>]
->>> Tag.objects.add_tag(dead, 'FOO')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>]
->>> Tag.objects.add_tag(dead, 'Zip')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>, <Tag: zip>]
->>> Tag.objects.update_tags(dead, None)
->>> f1.tags = u'TEST5'
->>> f1.save()
->>> Tag.objects.get_for_object(f1)
-[<Tag: test5>]
->>> f1.tags
-u'test5'
-
-# Retrieving tags by Model ####################################################
-
->>> Tag.objects.usage_for_model(Parrot)
-[]
->>> parrot_details = (
-...     ('pining for the fjords', 9, True,  'foo bar'),
-...     ('passed on',             6, False, 'bar baz ter'),
-...     ('no more',               4, True,  'foo ter'),
-...     ('late',                  2, False, 'bar ter'),
-... )
-
->>> for state, perch_size, perch_smelly, tags in parrot_details:
-...     perch = Perch.objects.create(size=perch_size, smelly=perch_smelly)
-...     parrot = Parrot.objects.create(state=state, perch=perch)
-...     Tag.objects.update_tags(parrot, tags)
-
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True)]
-[(u'bar', 3), (u'baz', 1), (u'foo', 2), (u'ter', 3)]
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, min_count=2)]
-[(u'bar', 3), (u'foo', 2), (u'ter', 3)]
-
-# Limiting results to a subset of the model
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(state='no more'))]
-[(u'foo', 1), (u'ter', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(state__startswith='p'))]
-[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(perch__size__gt=4))]
-[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(perch__smelly=True))]
-[(u'bar', 1), (u'foo', 2), (u'ter', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, min_count=2, filters=dict(perch__smelly=True))]
-[(u'foo', 2)]
->>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_model(Parrot, filters=dict(perch__size__gt=4))]
-[(u'bar', False), (u'baz', False), (u'foo', False), (u'ter', False)]
->>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_model(Parrot, filters=dict(perch__size__gt=99))]
-[]
-
-# Related tags
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, counts=True)]
-[(u'baz', 1), (u'foo', 1), (u'ter', 2)]
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, min_count=2)]
-[(u'ter', 2)]
->>> [tag.name for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, counts=False)]
-[u'baz', u'foo', u'ter']
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar', 'ter']), Parrot, counts=True)]
-[(u'baz', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar', 'ter', 'baz']), Parrot, counts=True)]
-[]
-
-# Once again, with feeling (strings)
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model('bar', Parrot, counts=True)]
-[(u'baz', 1), (u'foo', 1), (u'ter', 2)]
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model('bar', Parrot, min_count=2)]
-[(u'ter', 2)]
->>> [tag.name for tag in Tag.objects.related_for_model('bar', Parrot, counts=False)]
-[u'baz', u'foo', u'ter']
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(['bar', 'ter'], Parrot, counts=True)]
-[(u'baz', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(['bar', 'ter', 'baz'], Parrot, counts=True)]
-[]
-
-# Retrieving tagged objects by Model ##########################################
-
->>> foo = Tag.objects.get(name='foo')
->>> bar = Tag.objects.get(name='bar')
->>> baz = Tag.objects.get(name='baz')
->>> ter = Tag.objects.get(name='ter')
->>> TaggedItem.objects.get_by_model(Parrot, foo)
-[<Parrot: no more>, <Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_by_model(Parrot, bar)
-[<Parrot: late>, <Parrot: passed on>, <Parrot: pining for the fjords>]
-
-# Intersections are supported
->>> TaggedItem.objects.get_by_model(Parrot, [foo, baz])
-[]
->>> TaggedItem.objects.get_by_model(Parrot, [foo, bar])
-[<Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_by_model(Parrot, [bar, ter])
-[<Parrot: late>, <Parrot: passed on>]
-
-# You can also pass Tag QuerySets
->>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['foo', 'baz']))
-[]
->>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['foo', 'bar']))
-[<Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['bar', 'ter']))
-[<Parrot: late>, <Parrot: passed on>]
-
-# You can also pass strings and lists of strings
->>> TaggedItem.objects.get_by_model(Parrot, 'foo baz')
-[]
->>> TaggedItem.objects.get_by_model(Parrot, 'foo bar')
-[<Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_by_model(Parrot, 'bar ter')
-[<Parrot: late>, <Parrot: passed on>]
->>> TaggedItem.objects.get_by_model(Parrot, ['foo', 'baz'])
-[]
->>> TaggedItem.objects.get_by_model(Parrot, ['foo', 'bar'])
-[<Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_by_model(Parrot, ['bar', 'ter'])
-[<Parrot: late>, <Parrot: passed on>]
-
-# Issue 50 - Get by non-existent tag
->>> TaggedItem.objects.get_by_model(Parrot, 'argatrons')
-[]
-
-# Unions
->>> TaggedItem.objects.get_union_by_model(Parrot, ['foo', 'ter'])
-[<Parrot: late>, <Parrot: no more>, <Parrot: passed on>, <Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_union_by_model(Parrot, ['bar', 'baz'])
-[<Parrot: late>, <Parrot: passed on>, <Parrot: pining for the fjords>]
-
-# Retrieving related objects by Model #########################################
-
-# Related instances of the same Model
->>> l1 = Link.objects.create(name='link 1')
->>> Tag.objects.update_tags(l1, 'tag1 tag2 tag3 tag4 tag5')
->>> l2 = Link.objects.create(name='link 2')
->>> Tag.objects.update_tags(l2, 'tag1 tag2 tag3')
->>> l3 = Link.objects.create(name='link 3')
->>> Tag.objects.update_tags(l3, 'tag1')
->>> l4 = Link.objects.create(name='link 4')
->>> TaggedItem.objects.get_related(l1, Link)
-[<Link: link 2>, <Link: link 3>]
->>> TaggedItem.objects.get_related(l1, Link, num=1)
-[<Link: link 2>]
->>> TaggedItem.objects.get_related(l4, Link)
-[]
-
-# Related instance of a different Model
->>> a1 = Article.objects.create(name='article 1')
->>> Tag.objects.update_tags(a1, 'tag1 tag2 tag3 tag4')
->>> TaggedItem.objects.get_related(a1, Link)
-[<Link: link 1>, <Link: link 2>, <Link: link 3>]
->>> Tag.objects.update_tags(a1, 'tag6')
->>> TaggedItem.objects.get_related(a1, Link)
-[]
-
-################
-# Model Fields #
-################
-
-# TagField ####################################################################
-
-# Ensure that automatically created forms use TagField
->>> class TestForm(forms.ModelForm):
-...     class Meta:
-...         model = FormTest
->>> form = TestForm()
->>> form.fields['tags'].__class__.__name__
-'TagField'
-
-# Recreating string representaions of tag lists ###############################
->>> plain = Tag.objects.create(name='plain')
->>> spaces = Tag.objects.create(name='spa ces')
->>> comma = Tag.objects.create(name='com,ma')
-
->>> from tagging.utils import edit_string_for_tags
->>> edit_string_for_tags([plain])
-u'plain'
->>> edit_string_for_tags([plain, spaces])
-u'plain, spa ces'
->>> edit_string_for_tags([plain, spaces, comma])
-u'plain, spa ces, "com,ma"'
->>> edit_string_for_tags([plain, comma])
-u'plain "com,ma"'
->>> edit_string_for_tags([comma, spaces])
-u'"com,ma", spa ces'
-
-###############
-# Form Fields #
-###############
-
->>> t = TagField()
->>> t.clean('foo')
-u'foo'
->>> t.clean('foo bar baz')
-u'foo bar baz'
->>> t.clean('foo,bar,baz')
-u'foo,bar,baz'
->>> t.clean('foo, bar, baz')
-u'foo, bar, baz'
->>> t.clean('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvb bar')
-u'foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvb bar'
->>> t.clean('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar')
-Traceback (most recent call last):
-    ...
-ValidationError: [u'Each tag may be no more than 50 characters long.']
-"""
+# -*- coding: utf-8 -*-
+tests = r"""
+>>> import os
+>>> from django import newforms as forms
+>>> from tagging.forms import TagField
+>>> from tagging import settings
+>>> from tagging.models import Tag, TaggedItem
+>>> from tagging.tests.models import Article, Link, Perch, Parrot, FormTest
+>>> from tagging.utils import calculate_cloud, get_tag_list, get_tag, parse_tag_input
+>>> from tagging.utils import LINEAR
+>>> from tagging.validators import isTagList, isTag
+
+#############
+# Utilities #
+#############
+
+# Tag input ###################################################################
+
+# Simple space-delimited tags
+>>> parse_tag_input('one')
+[u'one']
+>>> parse_tag_input('one two')
+[u'one', u'two']
+>>> parse_tag_input('one two three')
+[u'one', u'three', u'two']
+>>> parse_tag_input('one one two two')
+[u'one', u'two']
+
+# Comma-delimited multiple words - an unquoted comma in the input will trigger
+# this.
+>>> parse_tag_input(',one')
+[u'one']
+>>> parse_tag_input(',one two')
+[u'one two']
+>>> parse_tag_input(',one two three')
+[u'one two three']
+>>> parse_tag_input('a-one, a-two and a-three')
+[u'a-one', u'a-two and a-three']
+
+# Double-quoted multiple words - a completed quote will trigger this.
+# Unclosed quotes are ignored.
+>>> parse_tag_input('"one')
+[u'one']
+>>> parse_tag_input('"one two')
+[u'one', u'two']
+>>> parse_tag_input('"one two three')
+[u'one', u'three', u'two']
+>>> parse_tag_input('"one two"')
+[u'one two']
+>>> parse_tag_input('a-one "a-two and a-three"')
+[u'a-one', u'a-two and a-three']
+
+# No loose commas - split on spaces
+>>> parse_tag_input('one two "thr,ee"')
+[u'one', u'thr,ee', u'two']
+
+# Loose commas - split on commas
+>>> parse_tag_input('"one", two three')
+[u'one', u'two three']
+
+# Double quotes can contain commas
+>>> parse_tag_input('a-one "a-two, and a-three"')
+[u'a-one', u'a-two, and a-three']
+>>> parse_tag_input('"two", one, one, two, "one"')
+[u'one', u'two']
+
+# Bad users! Naughty users!
+>>> parse_tag_input(None)
+[]
+>>> parse_tag_input('')
+[]
+>>> parse_tag_input('"')
+[]
+>>> parse_tag_input('""')
+[]
+>>> parse_tag_input('"' * 7)
+[]
+>>> parse_tag_input(',,,,,,')
+[]
+>>> parse_tag_input('",",",",",",","')
+[u',']
+>>> parse_tag_input('a-one "a-two" and "a-three')
+[u'a-one', u'a-three', u'a-two', u'and']
+
+# Normalised Tag list input ###################################################
+>>> cheese = Tag.objects.create(name='cheese')
+>>> toast = Tag.objects.create(name='toast')
+>>> get_tag_list(cheese)
+[<Tag: cheese>]
+>>> get_tag_list('cheese toast')
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list('cheese,toast')
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list([])
+[]
+>>> get_tag_list(['cheese', 'toast'])
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list([cheese.id, toast.id])
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list(['cheese', 'toast', 'ŠĐĆŽćžšđ'])
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list([cheese, toast])
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list((cheese, toast))
+(<Tag: cheese>, <Tag: toast>)
+>>> get_tag_list(Tag.objects.filter(name__in=['cheese', 'toast']))
+[<Tag: cheese>, <Tag: toast>]
+>>> get_tag_list(['cheese', toast])
+Traceback (most recent call last):
+    ...
+ValueError: If a list or tuple of tags is provided, they must all be tag names, Tag objects or Tag ids.
+>>> get_tag_list(29)
+Traceback (most recent call last):
+    ...
+ValueError: The tag input given was invalid.
+
+# Normalised Tag input
+>>> get_tag(cheese)
+<Tag: cheese>
+>>> get_tag('cheese')
+<Tag: cheese>
+>>> get_tag(cheese.id)
+<Tag: cheese>
+>>> get_tag('mouse')
+
+# Tag clouds ##################################################################
+>>> tags = []
+>>> for line in open(os.path.join(os.path.dirname(__file__), 'tags.txt')).readlines():
+...     name, count = line.rstrip().split()
+...     tag = Tag(name=name)
+...     tag.count = int(count)
+...     tags.append(tag)
+
+>>> sizes = {}
+>>> for tag in calculate_cloud(tags, steps=5):
+...     sizes[tag.font_size] = sizes.get(tag.font_size, 0) + 1
+
+# This isn't a pre-calculated test, just making sure it's consistent
+>>> sizes
+{1: 48, 2: 30, 3: 19, 4: 15, 5: 10}
+
+>>> sizes = {}
+>>> for tag in calculate_cloud(tags, steps=5, distribution=LINEAR):
+...     sizes[tag.font_size] = sizes.get(tag.font_size, 0) + 1
+
+# This isn't a pre-calculated test, just making sure it's consistent
+>>> sizes
+{1: 97, 2: 12, 3: 7, 4: 2, 5: 4}
+
+>>> calculate_cloud(tags, steps=5, distribution='cheese')
+Traceback (most recent call last):
+    ...
+ValueError: Invalid distribution algorithm specified: cheese.
+
+# Validators ##################################################################
+
+>>> isTagList('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar', {})
+Traceback (most recent call last):
+    ...
+ValidationError: [u'Each tag may be no more than 50 characters long.']
+
+>>> isTag('"test"', {})
+>>> isTag(',test', {})
+>>> isTag('f o o', {})
+Traceback (most recent call last):
+    ...
+ValidationError: [u'Multiple tags were given.']
+>>> isTagList('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar', {})
+Traceback (most recent call last):
+    ...
+ValidationError: [u'Each tag may be no more than 50 characters long.']
+
+###########
+# Tagging #
+###########
+
+# Basic tagging ###############################################################
+
+>>> dead = Parrot.objects.create(state='dead')
+>>> Tag.objects.update_tags(dead, 'foo,bar,"ter"')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: foo>, <Tag: ter>]
+>>> Tag.objects.update_tags(dead, '"foo" bar "baz"')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>]
+>>> Tag.objects.add_tag(dead, 'foo')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>]
+>>> Tag.objects.add_tag(dead, 'zip')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>, <Tag: zip>]
+>>> Tag.objects.add_tag(dead, '    ')
+Traceback (most recent call last):
+    ...
+AttributeError: No tags were given: "    ".
+>>> Tag.objects.add_tag(dead, 'one two')
+Traceback (most recent call last):
+    ...
+AttributeError: Multiple tags were given: "one two".
+
+# Note that doctest in Python 2.4 (and maybe 2.5?) doesn't support non-ascii
+# characters in output, so we're displaying the repr() here.
+>>> Tag.objects.update_tags(dead, 'ŠĐĆŽćžšđ')
+>>> repr(Tag.objects.get_for_object(dead))
+'[<Tag: \xc5\xa0\xc4\x90\xc4\x86\xc5\xbd\xc4\x87\xc5\xbe\xc5\xa1\xc4\x91>]'
+
+>>> Tag.objects.update_tags(dead, None)
+>>> Tag.objects.get_for_object(dead)
+[]
+
+# Using a model's TagField
+>>> f1 = FormTest.objects.create(tags=u'test3 test2 test1')
+>>> Tag.objects.get_for_object(f1)
+[<Tag: test1>, <Tag: test2>, <Tag: test3>]
+>>> f1.tags = u'test4'
+>>> f1.save()
+>>> Tag.objects.get_for_object(f1)
+[<Tag: test4>]
+>>> f1.tags = ''
+>>> f1.save()
+>>> Tag.objects.get_for_object(f1)
+[]
+
+# Forcing tags to lowercase
+>>> settings.FORCE_LOWERCASE_TAGS = True
+>>> Tag.objects.update_tags(dead, 'foO bAr Ter')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: foo>, <Tag: ter>]
+>>> Tag.objects.update_tags(dead, 'foO bAr baZ')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>]
+>>> Tag.objects.add_tag(dead, 'FOO')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>]
+>>> Tag.objects.add_tag(dead, 'Zip')
+>>> Tag.objects.get_for_object(dead)
+[<Tag: bar>, <Tag: baz>, <Tag: foo>, <Tag: zip>]
+>>> Tag.objects.update_tags(dead, None)
+>>> f1.tags = u'TEST5'
+>>> f1.save()
+>>> Tag.objects.get_for_object(f1)
+[<Tag: test5>]
+>>> f1.tags
+u'test5'
+
+# Retrieving tags by Model ####################################################
+
+>>> Tag.objects.usage_for_model(Parrot)
+[]
+>>> parrot_details = (
+...     ('pining for the fjords', 9, True,  'foo bar'),
+...     ('passed on',             6, False, 'bar baz ter'),
+...     ('no more',               4, True,  'foo ter'),
+...     ('late',                  2, False, 'bar ter'),
+... )
+
+>>> for state, perch_size, perch_smelly, tags in parrot_details:
+...     perch = Perch.objects.create(size=perch_size, smelly=perch_smelly)
+...     parrot = Parrot.objects.create(state=state, perch=perch)
+...     Tag.objects.update_tags(parrot, tags)
+
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True)]
+[(u'bar', 3), (u'baz', 1), (u'foo', 2), (u'ter', 3)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, min_count=2)]
+[(u'bar', 3), (u'foo', 2), (u'ter', 3)]
+
+# Limiting results to a subset of the model
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(state='no more'))]
+[(u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(state__startswith='p'))]
+[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(perch__size__gt=4))]
+[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(perch__smelly=True))]
+[(u'bar', 1), (u'foo', 2), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, min_count=2, filters=dict(perch__smelly=True))]
+[(u'foo', 2)]
+>>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_model(Parrot, filters=dict(perch__size__gt=4))]
+[(u'bar', False), (u'baz', False), (u'foo', False), (u'ter', False)]
+>>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_model(Parrot, filters=dict(perch__size__gt=99))]
+[]
+
+# Related tags
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, counts=True)]
+[(u'baz', 1), (u'foo', 1), (u'ter', 2)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, min_count=2)]
+[(u'ter', 2)]
+>>> [tag.name for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, counts=False)]
+[u'baz', u'foo', u'ter']
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar', 'ter']), Parrot, counts=True)]
+[(u'baz', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar', 'ter', 'baz']), Parrot, counts=True)]
+[]
+
+# Once again, with feeling (strings)
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model('bar', Parrot, counts=True)]
+[(u'baz', 1), (u'foo', 1), (u'ter', 2)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model('bar', Parrot, min_count=2)]
+[(u'ter', 2)]
+>>> [tag.name for tag in Tag.objects.related_for_model('bar', Parrot, counts=False)]
+[u'baz', u'foo', u'ter']
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(['bar', 'ter'], Parrot, counts=True)]
+[(u'baz', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(['bar', 'ter', 'baz'], Parrot, counts=True)]
+[]
+
+# Retrieving tagged objects by Model ##########################################
+
+>>> foo = Tag.objects.get(name='foo')
+>>> bar = Tag.objects.get(name='bar')
+>>> baz = Tag.objects.get(name='baz')
+>>> ter = Tag.objects.get(name='ter')
+>>> TaggedItem.objects.get_by_model(Parrot, foo)
+[<Parrot: no more>, <Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_by_model(Parrot, bar)
+[<Parrot: late>, <Parrot: passed on>, <Parrot: pining for the fjords>]
+
+# Intersections are supported
+>>> TaggedItem.objects.get_by_model(Parrot, [foo, baz])
+[]
+>>> TaggedItem.objects.get_by_model(Parrot, [foo, bar])
+[<Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_by_model(Parrot, [bar, ter])
+[<Parrot: late>, <Parrot: passed on>]
+
+# Issue 114 - Intersection with non-existant tags
+>>> TaggedItem.objects.get_intersection_by_model(Parrot, [])
+[]
+
+# You can also pass Tag QuerySets
+>>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['foo', 'baz']))
+[]
+>>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['foo', 'bar']))
+[<Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['bar', 'ter']))
+[<Parrot: late>, <Parrot: passed on>]
+
+# You can also pass strings and lists of strings
+>>> TaggedItem.objects.get_by_model(Parrot, 'foo baz')
+[]
+>>> TaggedItem.objects.get_by_model(Parrot, 'foo bar')
+[<Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_by_model(Parrot, 'bar ter')
+[<Parrot: late>, <Parrot: passed on>]
+>>> TaggedItem.objects.get_by_model(Parrot, ['foo', 'baz'])
+[]
+>>> TaggedItem.objects.get_by_model(Parrot, ['foo', 'bar'])
+[<Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_by_model(Parrot, ['bar', 'ter'])
+[<Parrot: late>, <Parrot: passed on>]
+
+# Issue 50 - Get by non-existent tag
+>>> TaggedItem.objects.get_by_model(Parrot, 'argatrons')
+[]
+
+# Unions
+>>> TaggedItem.objects.get_union_by_model(Parrot, ['foo', 'ter'])
+[<Parrot: late>, <Parrot: no more>, <Parrot: passed on>, <Parrot: pining for the fjords>]
+>>> TaggedItem.objects.get_union_by_model(Parrot, ['bar', 'baz'])
+[<Parrot: late>, <Parrot: passed on>, <Parrot: pining for the fjords>]
+
+# Issue 114 - Union with non-existant tags
+>>> TaggedItem.objects.get_union_by_model(Parrot, [])
+[]
+
+# Retrieving related objects by Model #########################################
+
+# Related instances of the same Model
+>>> l1 = Link.objects.create(name='link 1')
+>>> Tag.objects.update_tags(l1, 'tag1 tag2 tag3 tag4 tag5')
+>>> l2 = Link.objects.create(name='link 2')
+>>> Tag.objects.update_tags(l2, 'tag1 tag2 tag3')
+>>> l3 = Link.objects.create(name='link 3')
+>>> Tag.objects.update_tags(l3, 'tag1')
+>>> l4 = Link.objects.create(name='link 4')
+>>> TaggedItem.objects.get_related(l1, Link)
+[<Link: link 2>, <Link: link 3>]
+>>> TaggedItem.objects.get_related(l1, Link, num=1)
+[<Link: link 2>]
+>>> TaggedItem.objects.get_related(l4, Link)
+[]
+
+# Limit related items
+>>> TaggedItem.objects.get_related(l1, Link.objects.exclude(name='link 3'))
+[<Link: link 2>]
+
+# Related instance of a different Model
+>>> a1 = Article.objects.create(name='article 1')
+>>> Tag.objects.update_tags(a1, 'tag1 tag2 tag3 tag4')
+>>> TaggedItem.objects.get_related(a1, Link)
+[<Link: link 1>, <Link: link 2>, <Link: link 3>]
+>>> Tag.objects.update_tags(a1, 'tag6')
+>>> TaggedItem.objects.get_related(a1, Link)
+[]
+
+################
+# Model Fields #
+################
+
+# TagField ####################################################################
+
+# Ensure that automatically created forms use TagField
+>>> class TestForm(forms.ModelForm):
+...     class Meta:
+...         model = FormTest
+>>> form = TestForm()
+>>> form.fields['tags'].__class__.__name__
+'TagField'
+
+# Recreating string representaions of tag lists ###############################
+>>> plain = Tag.objects.create(name='plain')
+>>> spaces = Tag.objects.create(name='spa ces')
+>>> comma = Tag.objects.create(name='com,ma')
+
+>>> from tagging.utils import edit_string_for_tags
+>>> edit_string_for_tags([plain])
+u'plain'
+>>> edit_string_for_tags([plain, spaces])
+u'plain, spa ces'
+>>> edit_string_for_tags([plain, spaces, comma])
+u'plain, spa ces, "com,ma"'
+>>> edit_string_for_tags([plain, comma])
+u'plain "com,ma"'
+>>> edit_string_for_tags([comma, spaces])
+u'"com,ma", spa ces'
+
+###############
+# Form Fields #
+###############
+
+>>> t = TagField()
+>>> t.clean('foo')
+u'foo'
+>>> t.clean('foo bar baz')
+u'foo bar baz'
+>>> t.clean('foo,bar,baz')
+u'foo,bar,baz'
+>>> t.clean('foo, bar, baz')
+u'foo, bar, baz'
+>>> t.clean('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvb bar')
+u'foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvb bar'
+>>> t.clean('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar')
+Traceback (most recent call last):
+    ...
+ValidationError: [u'Each tag may be no more than 50 characters long.']
+"""
+
+tests_pre_qsrf = tests + r"""
+# Limiting results to a queryset
+>>> Tag.objects.usage_for_queryset(Parrot.objects.filter())
+Traceback (most recent call last):
+    ...
+AttributeError: 'TagManager.usage_for_queryset' is not compatible with pre-queryset-refactor versions of Django.
+"""
+
+tests_post_qsrf = tests + r"""
+>>> from django.db.models import Q
+
+# Limiting results to a queryset
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(state='no more'), counts=True)]
+[(u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(state__startswith='p'), counts=True)]
+[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(perch__size__gt=4), counts=True)]
+[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(perch__smelly=True), counts=True)]
+[(u'bar', 1), (u'foo', 2), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(perch__smelly=True), min_count=2)]
+[(u'foo', 2)]
+>>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(perch__size__gt=4))]
+[(u'bar', False), (u'baz', False), (u'foo', False), (u'ter', False)]
+>>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(perch__size__gt=99))]
+[]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(Q(perch__size__gt=6) | Q(state__startswith='l')), counts=True)]
+[(u'bar', 2), (u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(Q(perch__size__gt=6) | Q(state__startswith='l')), min_count=2)]
+[(u'bar', 2)]
+>>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_queryset(Parrot.objects.filter(Q(perch__size__gt=6) | Q(state__startswith='l')))]
+[(u'bar', False), (u'foo', False), (u'ter', False)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.exclude(state='passed on'), counts=True)]
+[(u'bar', 2), (u'foo', 2), (u'ter', 2)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.exclude(state__startswith='p'), min_count=2)]
+[(u'ter', 2)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.exclude(Q(perch__size__gt=6) | Q(perch__smelly=False)), counts=True)]
+[(u'foo', 1), (u'ter', 1)]
+>>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_queryset(Parrot.objects.exclude(perch__smelly=True).filter(state__startswith='l'), counts=True)]
+[(u'bar', 1), (u'ter', 1)]
+"""
+
+try:
+    from django.db.models.query import parse_lookup
+except ImportError:
+    __test__ = {'post-qsrf': tests_post_qsrf}
+else:
+    __test__ = {'pre-qsrf': tests_pre_qsrf}