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135 lines
4.7 KiB
Python
135 lines
4.7 KiB
Python
import datetime
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from unittest import skipUnless
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from django.core.exceptions import FieldError
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from django.db import connection
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from django.test import TestCase, override_settings
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from .models import Article, Category, Comment
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class DatesTests(TestCase):
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def test_related_model_traverse(self):
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a1 = Article.objects.create(
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title="First one",
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pub_date=datetime.date(2005, 7, 28),
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)
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a2 = Article.objects.create(
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title="Another one",
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pub_date=datetime.date(2010, 7, 28),
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)
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a3 = Article.objects.create(
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title="Third one, in the first day",
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pub_date=datetime.date(2005, 7, 28),
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)
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a1.comments.create(
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text="Im the HULK!",
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pub_date=datetime.date(2005, 7, 28),
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)
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a1.comments.create(
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text="HULK SMASH!",
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pub_date=datetime.date(2005, 7, 29),
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)
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a2.comments.create(
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text="LMAO",
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pub_date=datetime.date(2010, 7, 28),
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)
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a3.comments.create(
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text="+1",
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pub_date=datetime.date(2005, 8, 29),
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)
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c = Category.objects.create(name="serious-news")
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c.articles.add(a1, a3)
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self.assertSequenceEqual(
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Comment.objects.dates("article__pub_date", "year"), [
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datetime.date(2005, 1, 1),
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datetime.date(2010, 1, 1),
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],
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)
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self.assertSequenceEqual(
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Comment.objects.dates("article__pub_date", "month"), [
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datetime.date(2005, 7, 1),
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datetime.date(2010, 7, 1),
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],
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)
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self.assertSequenceEqual(
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Comment.objects.dates("article__pub_date", "week"), [
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datetime.date(2005, 7, 25),
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datetime.date(2010, 7, 26),
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],
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)
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self.assertSequenceEqual(
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Comment.objects.dates("article__pub_date", "day"), [
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datetime.date(2005, 7, 28),
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datetime.date(2010, 7, 28),
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],
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)
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self.assertSequenceEqual(
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Article.objects.dates("comments__pub_date", "day"), [
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datetime.date(2005, 7, 28),
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datetime.date(2005, 7, 29),
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datetime.date(2005, 8, 29),
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datetime.date(2010, 7, 28),
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],
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)
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self.assertQuerysetEqual(
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Article.objects.dates("comments__approval_date", "day"), []
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)
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self.assertSequenceEqual(
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Category.objects.dates("articles__pub_date", "day"), [
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datetime.date(2005, 7, 28),
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],
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)
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def test_dates_fails_when_no_arguments_are_provided(self):
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with self.assertRaises(TypeError):
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Article.objects.dates()
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def test_dates_fails_when_given_invalid_field_argument(self):
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with self.assertRaisesMessage(
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FieldError,
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"Cannot resolve keyword 'invalid_field' into field. Choices are: "
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"categories, comments, id, pub_date, pub_datetime, title",
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):
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Article.objects.dates('invalid_field', 'year')
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def test_dates_fails_when_given_invalid_kind_argument(self):
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msg = "'kind' must be one of 'year', 'month', 'week', or 'day'."
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with self.assertRaisesMessage(AssertionError, msg):
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Article.objects.dates("pub_date", "bad_kind")
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def test_dates_fails_when_given_invalid_order_argument(self):
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with self.assertRaisesMessage(AssertionError, "'order' must be either 'ASC' or 'DESC'."):
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Article.objects.dates("pub_date", "year", order="bad order")
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@override_settings(USE_TZ=False)
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def test_dates_trunc_datetime_fields(self):
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Article.objects.bulk_create(
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Article(pub_date=pub_datetime.date(), pub_datetime=pub_datetime)
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for pub_datetime in [
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datetime.datetime(2015, 10, 21, 18, 1),
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datetime.datetime(2015, 10, 21, 18, 2),
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datetime.datetime(2015, 10, 22, 18, 1),
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datetime.datetime(2015, 10, 22, 18, 2),
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]
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)
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self.assertSequenceEqual(
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Article.objects.dates('pub_datetime', 'day', order='ASC'), [
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datetime.date(2015, 10, 21),
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datetime.date(2015, 10, 22),
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]
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)
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@skipUnless(connection.vendor == 'mysql', "Test checks MySQL query syntax")
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def test_dates_avoid_datetime_cast(self):
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Article.objects.create(pub_date=datetime.date(2015, 10, 21))
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for kind in ['day', 'month', 'year']:
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qs = Article.objects.dates('pub_date', kind)
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if kind == 'day':
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self.assertIn('DATE(', str(qs.query))
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else:
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self.assertIn(' AS DATE)', str(qs.query))
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