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import datetime as dt |
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from django.core.cache import cache |
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from django.utils import translation |
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from django.utils.timezone import now |
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from parler import appsettings |
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from .utils import AppTestCase, override_parler_settings |
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from .testapp.models import SimpleModel, DateTimeModel |
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class QueryCountTests(AppTestCase): |
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""" |
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Test model construction |
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""" |
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@classmethod |
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def setUpClass(cls): |
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super(QueryCountTests, cls).setUpClass() |
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cls.country_list = ( |
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'Mexico', |
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'Monaco', |
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'Morocco', |
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'Netherlands', |
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'Norway', |
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'Poland', |
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'Portugal', |
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'Romania', |
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'Russia', |
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'South Africa', |
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) |
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for country in cls.country_list: |
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SimpleModel.objects.create(_current_language=cls.conf_fallback, tr_title=country) |
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DateTimeModel.objects.create(_current_language=cls.conf_fallback, |
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tr_title=country, datetime=now()) |
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#def setUp(self): |
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# cache.clear() |
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def assertNumTranslatedQueries(self, num, qs, language_code=None): |
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# Use default language if available. |
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if language_code is None: |
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language_code = self.conf_fallback |
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# Easier to understand then a oneline lambda |
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# Using str(), not unicode() to be python 3 compatible. |
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def test_qs(): |
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for obj in qs: |
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str(obj.tr_title) |
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# Queryset is not set to a language, the individual models |
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# will default to the currently active project language. |
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with translation.override(language_code): |
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self.assertNumQueries(num, test_qs) |
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def test_uncached_queries(self): |
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""" |
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Test that uncached queries work, albeit slowly. |
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""" |
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with override_parler_settings(PARLER_ENABLE_CACHING=False): |
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self.assertNumTranslatedQueries(1 + len(self.country_list), SimpleModel.objects.all()) |
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def test_iteration_with_non_qs_methods(self): |
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""" |
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Test QuerySet methods that do not return QuerySets of models. |
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""" |
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# We have at least one object created in setUpClass. |
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obj = DateTimeModel.objects.all()[0] |
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self.assertEqual( |
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obj, |
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DateTimeModel.objects.language(self.conf_fallback).all()[0]) |
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# Test iteration through QuerySet of non-model objects. |
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self.assertIsInstance( |
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DateTimeModel.objects.language(self.conf_fallback).dates( |
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'datetime', 'day')[0], |
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dt.date) |
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82
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def test_prefetch_queries(self): |
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""" |
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Test that .prefetch_related() works |
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""" |
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with override_parler_settings(PARLER_ENABLE_CACHING=False): |
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self.assertNumTranslatedQueries(2, SimpleModel.objects.prefetch_related('translations')) |
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def test_model_cache_queries(self): |
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""" |
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Test that the ``_translations_cache`` works. |
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""" |
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cache.clear() |
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with override_parler_settings(PARLER_ENABLE_CACHING=False): |
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qs = SimpleModel.objects.all() |
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self.assertNumTranslatedQueries(1 + len(self.country_list), qs) |
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self.assertNumTranslatedQueries(0, qs) # All should be cached on the QuerySet and object now. |
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qs = SimpleModel.objects.prefetch_related('translations') |
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self.assertNumTranslatedQueries(2, qs) |
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self.assertNumTranslatedQueries(0, qs) # All should be cached on the QuerySet and object now. |
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edoburu /
django-parler
