from django.conf import settings
from django.contrib.contenttypes.models import ContentType
from django.db import models
from django.test import TestCase
from django.contrib.auth.models import User
from django.utils.translation import get_language
from django.utils.translation import trans_real
from django.utils.thread_support import currentThread
from modeltranslation import translator
class TestModel(models.Model):
title = models.CharField(max_length=255)
text = models.TextField(null=True)
class TestTranslationOptions(translator.TranslationOptions):
fields = ('title', 'text',)
translator.translator.register(TestModel, TestTranslationOptions)
class ModelTranslationTest(TestCase):
"Basic tests for the modeltranslation application."
urls = 'modeltranslation.testurls'
def setUp(self):
trans_real.activate("de")
def tearDown(self):
trans_real.deactivate()
def test_registration(self):
self.client.post('/set_language/', data={'language': 'de'})
#self.client.session['django_language'] = 'de-de'
#self.client.cookies[settings.LANGUAGE_COOKIE_NAME] = 'de-de'
langs = tuple(l[0] for l in settings.LANGUAGES)
self.failUnlessEqual(2, len(langs))
self.failUnless('de' in langs)
self.failUnless('en' in langs)
self.failUnless(translator.translator)
# Check that only one model is registered for translation
self.failUnlessEqual(len(translator.translator._registry), 1)
# Try to unregister a model that is not registered
self.assertRaises(translator.NotRegistered, translator.translator.unregister, User)
# Try to get options for a model that is not registered
self.assertRaises(translator.NotRegistered, translator.translator.get_options_for_model, User)
def test_translated_models(self):
# First create an instance of the test model to play with
inst = TestModel.objects.create(title="Testtitle", text="Testtext")
field_names = dir(inst)
self.failUnless('id' in field_names)
self.failUnless('title' in field_names)
self.failUnless('text' in field_names)
self.failUnless('title_de' in field_names)
self.failUnless('title_en' in field_names)
self.failUnless('text_de' in field_names)
self.failUnless('text_en' in field_names)
inst.delete()
def test_set_translation(self):
self.failUnlessEqual(get_language(), "de")
# First create an instance of the test model to play with
title1_de = "title de"
title1_en = "title en"
title2_de = "title2 de"
inst1 = TestModel(title_en=title1_en, text="Testtext")
inst1.title = title1_de
inst2 = TestModel(title=title2_de, text="Testtext")
inst1.save()
inst2.save()
self.failUnlessEqual(inst1.title, title1_de)
self.failUnlessEqual(inst1.title_en, title1_en)
self.failUnlessEqual(inst2.title, title2_de)
self.failUnlessEqual(inst2.title_en, None)
del inst1
del inst2
# Check that the translation fields are correctly saved and provide the
# correct value when retrieving them again.
n = TestModel.objects.get(title=title1_de)
self.failUnlessEqual(n.title, title1_de)
self.failUnlessEqual(n.title_en, title1_en)
def test_titleonly(self):
title1_de = "title de"
n = TestModel.objects.create(title=title1_de)
self.failUnlessEqual(n.title, title1_de)
# Because the original field "title" was specified in the constructor
# it is directly passed into the instance's __dict__ and the descriptor
# which updates the associated default translation field is not called
# and the default translation will be None.
self.failUnlessEqual(n.title_de, None)
self.failUnlessEqual(n.title_en, None)
# Now assign the title, that triggers the descriptor and the default
# translation field is updated
n.title = title1_de
self.failUnlessEqual(n.title, title1_de)
self.failUnlessEqual(n.title_de, title1_de)
self.failUnlessEqual(n.title_en, None)
def test_rule1(self):
"""
Rule 1: Reading the value from the original field returns the value in
translated to the current language.
"""
title1_de = "title de"
title1_en = "title en"
text_de = "Dies ist ein deutscher Satz"
text_en = "This is an english sentence"
# Test 1.
n = TestModel.objects.create(title_de=title1_de, title_en=title1_en,
text_de=text_de, text_en=text_en)
n.save()
# language is set to "de" at this point
self.failUnlessEqual(get_language(), "de")
self.failUnlessEqual(n.title, title1_de)
self.failUnlessEqual(n.title_de, title1_de)
self.failUnlessEqual(n.title_en, title1_en)
self.failUnlessEqual(n.text, text_de)
self.failUnlessEqual(n.text_de, text_de)
self.failUnlessEqual(n.text_en, text_en)
# Now switch to "en"
trans_real.activate("en")
self.failUnlessEqual(get_language(), "en")
# Title should now be return the english one (just by switching the
# language)
self.failUnlessEqual(n.title, title1_en)
self.failUnlessEqual(n.text, text_en)
n = TestModel.objects.create(title_de=title1_de, title_en=title1_en,
text_de=text_de, text_en=text_en)
n.save()
# language is set to "en" at this point
self.failUnlessEqual(n.title, title1_en)
self.failUnlessEqual(n.title_de, title1_de)
self.failUnlessEqual(n.title_en, title1_en)
self.failUnlessEqual(n.text, text_en)
self.failUnlessEqual(n.text_de, text_de)
self.failUnlessEqual(n.text_en, text_en)
trans_real.activate("de")
self.failUnlessEqual(get_language(), "de")
self.failUnlessEqual(n.title, title1_de)
self.failUnlessEqual(n.text, text_de)
trans_real.deactivate()
def test_rule2(self):
"""
Rule 2: Assigning a value to the original field also updates the value
in the associated translation field of the default language
"""
self.failUnlessEqual(get_language(), "de")
title1_de = "title de"
title1_en = "title en"
n = TestModel.objects.create(title_de=title1_de, title_en=title1_en)
self.failUnlessEqual(n.title, title1_de)
self.failUnlessEqual(n.title_de, title1_de)
self.failUnlessEqual(n.title_en, title1_en)
title2 = "Neuer Titel"
n.title = title2
n.save()
self.failUnlessEqual(n.title, title2)
self.failUnlessEqual(n.title, n.title_de)
trans_real.activate("en")
self.failUnlessEqual(get_language(), "en")
title3 = "new title"
n.title = title3
n.title_de = title1_de
n.save()
self.failUnlessEqual(n.title, title3)
self.failUnlessEqual(n.title, n.title_en)
self.failUnlessEqual(title1_de, n.title_de)
trans_real.deactivate()
def test_rule3(self):
"""
Rule 3: Assigning a value to a translation field of the default language
also updates the original field - note that the value of the original
field will not be updated until the model instance is saved.
"""
title1_de = "title de"
title1_en = "title en"
n = TestModel.objects.create(title_de=title1_de, title_en=title1_en)
self.failUnlessEqual(get_language(), "de")
self.failUnlessEqual(n.title, title1_de)
self.failUnlessEqual(n.title_de, title1_de)
self.failUnlessEqual(n.title_en, title1_en)
n.title_de = "Neuer Titel"
n.save()
self.failUnlessEqual(n.title, n.title_de)
# Now switch to "en"
trans_real.activate("en")
self.failUnlessEqual(get_language(), "en")
n.title_en = "New title"
# the n.title field is not updated before the instance is saved
n.save()
self.failUnlessEqual(n.title, n.title_en)
trans_real.deactivate()
def test_rule4(self):
"""
Rule 4: If both fields - the original and the translation field of the
default language - are updated at the same time, the translation field
wins.
"""
self.failUnlessEqual(get_language(), "de")
title1_de = "title de"
title1_en = "title en"
n = TestModel.objects.create(title_de=title1_de, title_en=title1_en)
self.failUnlessEqual(n.title, title1_de)
self.failUnlessEqual(n.title_de, title1_de)
self.failUnlessEqual(n.title_en, title1_en)
title2_de = "neu de"
title2_en = "new en"
title_foo = "foo"
n.title = title_foo
n.title_de = title2_de
n.title_en = title2_en
n.save()
self.failUnlessEqual(n.title, title2_de)
self.failUnlessEqual(n.title_de, title2_de)
self.failUnlessEqual(n.title_en, title2_en)
n.title = title_foo
n.save()
self.failUnlessEqual(n.title, title_foo)
self.failUnlessEqual(n.title_de, title_foo)
self.failUnlessEqual(n.title_en, title2_en)