from datetime import datetime import unittest from django.db import models 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.utils.formats import localize from models import Article 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) )