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from datetime import datetime
from django.test import TestCase
from .models import Article, Category
class M2MMultipleTests(TestCase):
def test_multiple(self):
c1, c2, c3, c4 = [
Category.objects.create(name=name)
for name in ["Sports", "News", "Crime", "Life"]
]
a1 = Article.objects.create(
headline="Parrot steals", pub_date=datetime(2005, 11, 27)
)
a1.primary_categories.add(c2, c3)
a1.secondary_categories.add(c4)
a2 = Article.objects.create(
headline="Parrot runs", pub_date=datetime(2005, 11, 28)
)
a2.primary_categories.add(c1, c2)
a2.secondary_categories.add(c4)
self.assertQuerySetEqual(
a1.primary_categories.all(),
[
"Crime",
"News",
],
lambda c: c.name,
)
self.assertQuerySetEqual(
a2.primary_categories.all(),
[
"News",
"Sports",
],
lambda c: c.name,
)
self.assertQuerySetEqual(
a1.secondary_categories.all(),
[
"Life",
],
lambda c: c.name,
)
self.assertQuerySetEqual(
c1.primary_article_set.all(),
[
"Parrot runs",
],
lambda a: a.headline,
)
self.assertQuerySetEqual(c1.secondary_article_set.all(), [])
self.assertQuerySetEqual(
c2.primary_article_set.all(),
[
"Parrot steals",
"Parrot runs",
],
lambda a: a.headline,
)
self.assertQuerySetEqual(c2.secondary_article_set.all(), [])
self.assertQuerySetEqual(
c3.primary_article_set.all(),
[
"Parrot steals",
],
lambda a: a.headline,
)
self.assertQuerySetEqual(c3.secondary_article_set.all(), [])
self.assertQuerySetEqual(c4.primary_article_set.all(), [])
self.assertQuerySetEqual(
c4.secondary_article_set.all(),
[
"Parrot steals",
"Parrot runs",
],
lambda a: a.headline,
)
|
