from datetime import datetime import unittest from django.db import models from django.utils.formats import localize from django.test import TestCase from django.contrib import admin from django.contrib.admin.util import display_for_field, label_for_field, lookup_field from django.contrib.admin.views.main import EMPTY_CHANGELIST_VALUE from django.contrib.sites.models import Site from django.contrib.admin.util import NestedObjects from models import Article, Count class NestedObjectsTests(TestCase): """ Tests for ``NestedObject`` utility collection. """ def setUp(self): self.n = NestedObjects() self.objs = [Count.objects.create(num=i) for i in range(5)] def _check(self, target): self.assertEquals(self.n.nested(lambda obj: obj.num), target) def _add(self, obj, parent=None): # don't bother providing the extra args that NestedObjects ignores self.n.add(None, None, obj, None, parent) def test_unrelated_roots(self): self._add(self.objs[0]) self._add(self.objs[1]) self._add(self.objs[2], self.objs[1]) self._check([0, 1, [2]]) def test_siblings(self): self._add(self.objs[0]) self._add(self.objs[1], self.objs[0]) self._add(self.objs[2], self.objs[0]) self._check([0, [1, 2]]) def test_duplicate_instances(self): self._add(self.objs[0]) self._add(self.objs[1]) dupe = Count.objects.get(num=1) self._add(dupe, self.objs[0]) self._check([0, 1]) def test_non_added_parent(self): self._add(self.objs[0], self.objs[1]) self._check([0]) def test_cyclic(self): self._add(self.objs[0], self.objs[2]) self._add(self.objs[1], self.objs[0]) self._add(self.objs[2], self.objs[1]) self._add(self.objs[0], self.objs[2]) self._check([0, [1, [2]]]) class UtilTests(unittest.TestCase): def test_values_from_lookup_field(self): """ Regression test for #12654: lookup_field """ SITE_NAME = 'example.com' TITLE_TEXT = 'Some title' CREATED_DATE = datetime.min ADMIN_METHOD = 'admin method' SIMPLE_FUNCTION = 'function' INSTANCE_ATTRIBUTE = 'attr' class MockModelAdmin(object): def get_admin_value(self, obj): return ADMIN_METHOD simple_function = lambda obj: SIMPLE_FUNCTION article = Article( site=Site(domain=SITE_NAME), title=TITLE_TEXT, created=CREATED_DATE, ) article.non_field = INSTANCE_ATTRIBUTE verifications = ( ('site', SITE_NAME), ('created', localize(CREATED_DATE)), ('title', TITLE_TEXT), ('get_admin_value', ADMIN_METHOD), (simple_function, SIMPLE_FUNCTION), ('test_from_model', article.test_from_model()), ('non_field', INSTANCE_ATTRIBUTE) ) mock_admin = MockModelAdmin() for name, value in verifications: field, attr, resolved_value = lookup_field(name, article, mock_admin) if field is not None: resolved_value = display_for_field(resolved_value, field) self.assertEqual(value, resolved_value) def test_null_display_for_field(self): """ Regression test for #12550: display_for_field should handle None value. """ display_value = display_for_field(None, models.CharField()) self.assertEqual(display_value, EMPTY_CHANGELIST_VALUE) display_value = display_for_field(None, models.CharField( choices=( (None, "test_none"), ) )) self.assertEqual(display_value, "test_none") display_value = display_for_field(None, models.DateField()) self.assertEqual(display_value, EMPTY_CHANGELIST_VALUE) display_value = display_for_field(None, models.TimeField()) self.assertEqual(display_value, EMPTY_CHANGELIST_VALUE) display_value = display_for_field(None, models.NullBooleanField()) self.assertEqual(display_value, EMPTY_CHANGELIST_VALUE) display_value = display_for_field(None, models.DecimalField()) self.assertEqual(display_value, EMPTY_CHANGELIST_VALUE) display_value = display_for_field(None, models.FloatField()) self.assertEqual(display_value, EMPTY_CHANGELIST_VALUE) def test_label_for_field(self): """ Tests for label_for_field """ self.assertEquals( label_for_field("title", Article), "title" ) self.assertEquals( label_for_field("title2", Article), "another name" ) self.assertEquals( label_for_field("title2", Article, return_attr=True), ("another name", None) ) self.assertEquals( label_for_field("__unicode__", Article), "article" ) self.assertEquals( label_for_field("__str__", Article), "article" ) self.assertRaises( AttributeError, lambda: label_for_field("unknown", Article) ) def test_callable(obj): return "nothing" self.assertEquals( label_for_field(test_callable, Article), "test_callable" ) self.assertEquals( label_for_field(test_callable, Article, return_attr=True), ("test_callable", test_callable) ) self.assertEquals( label_for_field("test_from_model", Article), "test_from_model" ) self.assertEquals( label_for_field("test_from_model", Article, return_attr=True), ("test_from_model", Article.test_from_model) ) self.assertEquals( label_for_field("test_from_model_with_override", Article), "not what you expect" ) self.assertEquals( label_for_field(lambda x: "nothing", Article), "--" ) class MockModelAdmin(object): def test_from_model(self, obj): return "nothing" test_from_model.short_description = "not really the model" self.assertEquals( label_for_field("test_from_model", Article, model_admin=MockModelAdmin), "not really the model" ) self.assertEquals( label_for_field("test_from_model", Article, model_admin = MockModelAdmin, return_attr = True ), ("not really the model", MockModelAdmin.test_from_model) )