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Diffstat (limited to 'tests/generic_relations/tests.py')
| -rw-r--r-- | tests/generic_relations/tests.py | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/tests/generic_relations/tests.py b/tests/generic_relations/tests.py new file mode 100644 index 0000000000..27b25185ea --- /dev/null +++ b/tests/generic_relations/tests.py @@ -0,0 +1,261 @@ +from __future__ import absolute_import, unicode_literals + +from django import forms +from django.contrib.contenttypes.generic import generic_inlineformset_factory +from django.contrib.contenttypes.models import ContentType +from django.test import TestCase + +from .models import (TaggedItem, ValuableTaggedItem, Comparison, Animal, + Vegetable, Mineral, Gecko, Rock) + + +class GenericRelationsTests(TestCase): + def test_generic_relations(self): + # Create the world in 7 lines of code... + lion = Animal.objects.create(common_name="Lion", latin_name="Panthera leo") + platypus = Animal.objects.create( + common_name="Platypus", latin_name="Ornithorhynchus anatinus" + ) + eggplant = Vegetable.objects.create(name="Eggplant", is_yucky=True) + bacon = Vegetable.objects.create(name="Bacon", is_yucky=False) + quartz = Mineral.objects.create(name="Quartz", hardness=7) + + # Objects with declared GenericRelations can be tagged directly -- the + # API mimics the many-to-many API. + bacon.tags.create(tag="fatty") + bacon.tags.create(tag="salty") + lion.tags.create(tag="yellow") + lion.tags.create(tag="hairy") + platypus.tags.create(tag="fatty") + self.assertQuerysetEqual(lion.tags.all(), [ + "<TaggedItem: hairy>", + "<TaggedItem: yellow>" + ]) + self.assertQuerysetEqual(bacon.tags.all(), [ + "<TaggedItem: fatty>", + "<TaggedItem: salty>" + ]) + + # You can easily access the content object like a foreign key. + t = TaggedItem.objects.get(tag="salty") + self.assertEqual(t.content_object, bacon) + + # Recall that the Mineral class doesn't have an explicit GenericRelation + # defined. That's OK, because you can create TaggedItems explicitly. + tag1 = TaggedItem.objects.create(content_object=quartz, tag="shiny") + tag2 = TaggedItem.objects.create(content_object=quartz, tag="clearish") + + # However, excluding GenericRelations means your lookups have to be a + # bit more explicit. + ctype = ContentType.objects.get_for_model(quartz) + q = TaggedItem.objects.filter( + content_type__pk=ctype.id, object_id=quartz.id + ) + self.assertQuerysetEqual(q, [ + "<TaggedItem: clearish>", + "<TaggedItem: shiny>" + ]) + + # You can set a generic foreign key in the way you'd expect. + tag1.content_object = platypus + tag1.save() + self.assertQuerysetEqual(platypus.tags.all(), [ + "<TaggedItem: fatty>", + "<TaggedItem: shiny>" + ]) + q = TaggedItem.objects.filter( + content_type__pk=ctype.id, object_id=quartz.id + ) + self.assertQuerysetEqual(q, ["<TaggedItem: clearish>"]) + + # Queries across generic relations respect the content types. Even + # though there are two TaggedItems with a tag of "fatty", this query + # only pulls out the one with the content type related to Animals. + self.assertQuerysetEqual(Animal.objects.order_by('common_name'), [ + "<Animal: Lion>", + "<Animal: Platypus>" + ]) + self.assertQuerysetEqual(Animal.objects.filter(tags__tag='fatty'), [ + "<Animal: Platypus>" + ]) + self.assertQuerysetEqual(Animal.objects.exclude(tags__tag='fatty'), [ + "<Animal: Lion>" + ]) + + # If you delete an object with an explicit Generic relation, the related + # objects are deleted when the source object is deleted. + # Original list of tags: + comp_func = lambda obj: ( + obj.tag, obj.content_type.model_class(), obj.object_id + ) + + self.assertQuerysetEqual(TaggedItem.objects.all(), [ + ('clearish', Mineral, quartz.pk), + ('fatty', Animal, platypus.pk), + ('fatty', Vegetable, bacon.pk), + ('hairy', Animal, lion.pk), + ('salty', Vegetable, bacon.pk), + ('shiny', Animal, platypus.pk), + ('yellow', Animal, lion.pk) + ], + comp_func + ) + lion.delete() + self.assertQuerysetEqual(TaggedItem.objects.all(), [ + ('clearish', Mineral, quartz.pk), + ('fatty', Animal, platypus.pk), + ('fatty', Vegetable, bacon.pk), + ('salty', Vegetable, bacon.pk), + ('shiny', Animal, platypus.pk) + ], + comp_func + ) + + # If Generic Relation is not explicitly defined, any related objects + # remain after deletion of the source object. + quartz_pk = quartz.pk + quartz.delete() + self.assertQuerysetEqual(TaggedItem.objects.all(), [ + ('clearish', Mineral, quartz_pk), + ('fatty', Animal, platypus.pk), + ('fatty', Vegetable, bacon.pk), + ('salty', Vegetable, bacon.pk), + ('shiny', Animal, platypus.pk) + ], + comp_func + ) + # If you delete a tag, the objects using the tag are unaffected + # (other than losing a tag) + tag = TaggedItem.objects.order_by("id")[0] + tag.delete() + self.assertQuerysetEqual(bacon.tags.all(), ["<TaggedItem: salty>"]) + self.assertQuerysetEqual(TaggedItem.objects.all(), [ + ('clearish', Mineral, quartz_pk), + ('fatty', Animal, platypus.pk), + ('salty', Vegetable, bacon.pk), + ('shiny', Animal, platypus.pk) + ], + comp_func + ) + TaggedItem.objects.filter(tag='fatty').delete() + ctype = ContentType.objects.get_for_model(lion) + self.assertQuerysetEqual(Animal.objects.filter(tags__content_type=ctype), [ + "<Animal: Platypus>" + ]) + + + def test_multiple_gfk(self): + # Simple tests for multiple GenericForeignKeys + # only uses one model, since the above tests should be sufficient. + tiger = Animal.objects.create(common_name="tiger") + cheetah = Animal.objects.create(common_name="cheetah") + bear = Animal.objects.create(common_name="bear") + + # Create directly + Comparison.objects.create( + first_obj=cheetah, other_obj=tiger, comparative="faster" + ) + Comparison.objects.create( + first_obj=tiger, other_obj=cheetah, comparative="cooler" + ) + + # Create using GenericRelation + tiger.comparisons.create(other_obj=bear, comparative="cooler") + tiger.comparisons.create(other_obj=cheetah, comparative="stronger") + self.assertQuerysetEqual(cheetah.comparisons.all(), [ + "<Comparison: cheetah is faster than tiger>" + ]) + + # Filtering works + self.assertQuerysetEqual(tiger.comparisons.filter(comparative="cooler"), [ + "<Comparison: tiger is cooler than cheetah>", + "<Comparison: tiger is cooler than bear>", + ], ordered=False) + + # Filtering and deleting works + subjective = ["cooler"] + tiger.comparisons.filter(comparative__in=subjective).delete() + self.assertQuerysetEqual(Comparison.objects.all(), [ + "<Comparison: cheetah is faster than tiger>", + "<Comparison: tiger is stronger than cheetah>" + ], ordered=False) + + # If we delete cheetah, Comparisons with cheetah as 'first_obj' will be + # deleted since Animal has an explicit GenericRelation to Comparison + # through first_obj. Comparisons with cheetah as 'other_obj' will not + # be deleted. + cheetah.delete() + self.assertQuerysetEqual(Comparison.objects.all(), [ + "<Comparison: tiger is stronger than None>" + ]) + + def test_gfk_subclasses(self): + # GenericForeignKey should work with subclasses (see #8309) + quartz = Mineral.objects.create(name="Quartz", hardness=7) + valuedtag = ValuableTaggedItem.objects.create( + content_object=quartz, tag="shiny", value=10 + ) + self.assertEqual(valuedtag.content_object, quartz) + + def test_generic_inline_formsets(self): + GenericFormSet = generic_inlineformset_factory(TaggedItem, extra=1) + formset = GenericFormSet() + self.assertHTMLEqual(''.join(form.as_p() for form in formset.forms), """<p><label for="id_generic_relations-taggeditem-content_type-object_id-0-tag">Tag:</label> <input id="id_generic_relations-taggeditem-content_type-object_id-0-tag" type="text" name="generic_relations-taggeditem-content_type-object_id-0-tag" maxlength="50" /></p> +<p><label for="id_generic_relations-taggeditem-content_type-object_id-0-DELETE">Delete:</label> <input type="checkbox" name="generic_relations-taggeditem-content_type-object_id-0-DELETE" id="id_generic_relations-taggeditem-content_type-object_id-0-DELETE" /><input type="hidden" name="generic_relations-taggeditem-content_type-object_id-0-id" id="id_generic_relations-taggeditem-content_type-object_id-0-id" /></p>""") + + formset = GenericFormSet(instance=Animal()) + self.assertHTMLEqual(''.join(form.as_p() for form in formset.forms), """<p><label for="id_generic_relations-taggeditem-content_type-object_id-0-tag">Tag:</label> <input id="id_generic_relations-taggeditem-content_type-object_id-0-tag" type="text" name="generic_relations-taggeditem-content_type-object_id-0-tag" maxlength="50" /></p> +<p><label for="id_generic_relations-taggeditem-content_type-object_id-0-DELETE">Delete:</label> <input type="checkbox" name="generic_relations-taggeditem-content_type-object_id-0-DELETE" id="id_generic_relations-taggeditem-content_type-object_id-0-DELETE" /><input type="hidden" name="generic_relations-taggeditem-content_type-object_id-0-id" id="id_generic_relations-taggeditem-content_type-object_id-0-id" /></p>""") + + platypus = Animal.objects.create( + common_name="Platypus", latin_name="Ornithorhynchus anatinus" + ) + platypus.tags.create(tag="shiny") + GenericFormSet = generic_inlineformset_factory(TaggedItem, extra=1) + formset = GenericFormSet(instance=platypus) + tagged_item_id = TaggedItem.objects.get( + tag='shiny', object_id=platypus.id + ).id + self.assertHTMLEqual(''.join(form.as_p() for form in formset.forms), """<p><label for="id_generic_relations-taggeditem-content_type-object_id-0-tag">Tag:</label> <input id="id_generic_relations-taggeditem-content_type-object_id-0-tag" type="text" name="generic_relations-taggeditem-content_type-object_id-0-tag" value="shiny" maxlength="50" /></p> +<p><label for="id_generic_relations-taggeditem-content_type-object_id-0-DELETE">Delete:</label> <input type="checkbox" name="generic_relations-taggeditem-content_type-object_id-0-DELETE" id="id_generic_relations-taggeditem-content_type-object_id-0-DELETE" /><input type="hidden" name="generic_relations-taggeditem-content_type-object_id-0-id" value="%s" id="id_generic_relations-taggeditem-content_type-object_id-0-id" /></p><p><label for="id_generic_relations-taggeditem-content_type-object_id-1-tag">Tag:</label> <input id="id_generic_relations-taggeditem-content_type-object_id-1-tag" type="text" name="generic_relations-taggeditem-content_type-object_id-1-tag" maxlength="50" /></p> +<p><label for="id_generic_relations-taggeditem-content_type-object_id-1-DELETE">Delete:</label> <input type="checkbox" name="generic_relations-taggeditem-content_type-object_id-1-DELETE" id="id_generic_relations-taggeditem-content_type-object_id-1-DELETE" /><input type="hidden" name="generic_relations-taggeditem-content_type-object_id-1-id" id="id_generic_relations-taggeditem-content_type-object_id-1-id" /></p>""" % tagged_item_id) + + lion = Animal.objects.create(common_name="Lion", latin_name="Panthera leo") + formset = GenericFormSet(instance=lion, prefix='x') + self.assertHTMLEqual(''.join(form.as_p() for form in formset.forms), """<p><label for="id_x-0-tag">Tag:</label> <input id="id_x-0-tag" type="text" name="x-0-tag" maxlength="50" /></p> +<p><label for="id_x-0-DELETE">Delete:</label> <input type="checkbox" name="x-0-DELETE" id="id_x-0-DELETE" /><input type="hidden" name="x-0-id" id="id_x-0-id" /></p>""") + + def test_gfk_manager(self): + # GenericForeignKey should not use the default manager (which may filter objects) #16048 + tailless = Gecko.objects.create(has_tail=False) + tag = TaggedItem.objects.create(content_object=tailless, tag="lizard") + self.assertEqual(tag.content_object, tailless) + + def test_subclasses_with_gen_rel(self): + """ + Test that concrete model subclasses with generic relations work + correctly (ticket 11263). + """ + granite = Rock.objects.create(name='granite', hardness=5) + TaggedItem.objects.create(content_object=granite, tag="countertop") + self.assertEqual(Rock.objects.filter(tags__tag="countertop").count(), 1) + + +class CustomWidget(forms.TextInput): + pass + +class TaggedItemForm(forms.ModelForm): + class Meta: + model = TaggedItem + widgets = {'tag': CustomWidget} + +class GenericInlineFormsetTest(TestCase): + """ + Regression for #14572: Using base forms with widgets + defined in Meta should not raise errors. + """ + + def test_generic_inlineformset_factory(self): + Formset = generic_inlineformset_factory(TaggedItem, TaggedItemForm) + form = Formset().forms[0] + self.assertTrue(isinstance(form['tag'].field.widget, CustomWidget)) |