summaryrefslogtreecommitdiff
path: root/tests/prefetch_related/test_prefetch_related_objects.py
diff options
context:
space:
mode:
authordjango-bot <ops@djangoproject.com>2022-02-03 20:24:19 +0100
committerMariusz Felisiak <felisiak.mariusz@gmail.com>2022-02-07 20:37:05 +0100
commit9c19aff7c7561e3a82978a272ecdaad40dda5c00 (patch)
treef0506b668a013d0063e5fba3dbf4863b466713ba /tests/prefetch_related/test_prefetch_related_objects.py
parentf68fa8b45dfac545cfc4111d4e52804c86db68d3 (diff)
Refs #33476 -- Reformatted code with Black.
Diffstat (limited to 'tests/prefetch_related/test_prefetch_related_objects.py')
-rw-r--r--tests/prefetch_related/test_prefetch_related_objects.py76
1 files changed, 45 insertions, 31 deletions
diff --git a/tests/prefetch_related/test_prefetch_related_objects.py b/tests/prefetch_related/test_prefetch_related_objects.py
index 20d4da5a0a..ca1f904c52 100644
--- a/tests/prefetch_related/test_prefetch_related_objects.py
+++ b/tests/prefetch_related/test_prefetch_related_objects.py
@@ -9,25 +9,26 @@ class PrefetchRelatedObjectsTests(TestCase):
Since prefetch_related_objects() is just the inner part of
prefetch_related(), only do basic tests to ensure its API hasn't changed.
"""
+
@classmethod
def setUpTestData(cls):
- cls.book1 = Book.objects.create(title='Poems')
- cls.book2 = Book.objects.create(title='Jane Eyre')
- cls.book3 = Book.objects.create(title='Wuthering Heights')
- cls.book4 = Book.objects.create(title='Sense and Sensibility')
+ cls.book1 = Book.objects.create(title="Poems")
+ cls.book2 = Book.objects.create(title="Jane Eyre")
+ cls.book3 = Book.objects.create(title="Wuthering Heights")
+ cls.book4 = Book.objects.create(title="Sense and Sensibility")
- cls.author1 = Author.objects.create(name='Charlotte', first_book=cls.book1)
- cls.author2 = Author.objects.create(name='Anne', first_book=cls.book1)
- cls.author3 = Author.objects.create(name='Emily', first_book=cls.book1)
- cls.author4 = Author.objects.create(name='Jane', first_book=cls.book4)
+ cls.author1 = Author.objects.create(name="Charlotte", first_book=cls.book1)
+ cls.author2 = Author.objects.create(name="Anne", first_book=cls.book1)
+ cls.author3 = Author.objects.create(name="Emily", first_book=cls.book1)
+ cls.author4 = Author.objects.create(name="Jane", first_book=cls.book4)
cls.book1.authors.add(cls.author1, cls.author2, cls.author3)
cls.book2.authors.add(cls.author1)
cls.book3.authors.add(cls.author3)
cls.book4.authors.add(cls.author4)
- cls.reader1 = Reader.objects.create(name='Amy')
- cls.reader2 = Reader.objects.create(name='Belinda')
+ cls.reader1 = Reader.objects.create(name="Amy")
+ cls.reader2 = Reader.objects.create(name="Belinda")
cls.reader1.books_read.add(cls.book1, cls.book4)
cls.reader2.books_read.add(cls.book2, cls.book4)
@@ -35,20 +36,22 @@ class PrefetchRelatedObjectsTests(TestCase):
def test_unknown(self):
book1 = Book.objects.get(id=self.book1.id)
with self.assertRaises(AttributeError):
- prefetch_related_objects([book1], 'unknown_attribute')
+ prefetch_related_objects([book1], "unknown_attribute")
def test_m2m_forward(self):
book1 = Book.objects.get(id=self.book1.id)
with self.assertNumQueries(1):
- prefetch_related_objects([book1], 'authors')
+ prefetch_related_objects([book1], "authors")
with self.assertNumQueries(0):
- self.assertCountEqual(book1.authors.all(), [self.author1, self.author2, self.author3])
+ self.assertCountEqual(
+ book1.authors.all(), [self.author1, self.author2, self.author3]
+ )
def test_m2m_reverse(self):
author1 = Author.objects.get(id=self.author1.id)
with self.assertNumQueries(1):
- prefetch_related_objects([author1], 'books')
+ prefetch_related_objects([author1], "books")
with self.assertNumQueries(0):
self.assertCountEqual(author1.books.all(), [self.book1, self.book2])
@@ -56,7 +59,7 @@ class PrefetchRelatedObjectsTests(TestCase):
def test_foreignkey_forward(self):
authors = list(Author.objects.all())
with self.assertNumQueries(1):
- prefetch_related_objects(authors, 'first_book')
+ prefetch_related_objects(authors, "first_book")
with self.assertNumQueries(0):
[author.first_book for author in authors]
@@ -64,7 +67,7 @@ class PrefetchRelatedObjectsTests(TestCase):
def test_foreignkey_reverse(self):
books = list(Book.objects.all())
with self.assertNumQueries(1):
- prefetch_related_objects(books, 'first_time_authors')
+ prefetch_related_objects(books, "first_time_authors")
with self.assertNumQueries(0):
[list(book.first_time_authors.all()) for book in books]
@@ -73,7 +76,7 @@ class PrefetchRelatedObjectsTests(TestCase):
"""A m2m can be followed through another m2m."""
authors = list(Author.objects.all())
with self.assertNumQueries(2):
- prefetch_related_objects(authors, 'books__read_by')
+ prefetch_related_objects(authors, "books__read_by")
with self.assertNumQueries(0):
self.assertEqual(
@@ -82,38 +85,44 @@ class PrefetchRelatedObjectsTests(TestCase):
for a in authors
],
[
- [['Amy'], ['Belinda']], # Charlotte - Poems, Jane Eyre
- [['Amy']], # Anne - Poems
- [['Amy'], []], # Emily - Poems, Wuthering Heights
- [['Amy', 'Belinda']], # Jane - Sense and Sense
- ]
+ [["Amy"], ["Belinda"]], # Charlotte - Poems, Jane Eyre
+ [["Amy"]], # Anne - Poems
+ [["Amy"], []], # Emily - Poems, Wuthering Heights
+ [["Amy", "Belinda"]], # Jane - Sense and Sense
+ ],
)
def test_prefetch_object(self):
book1 = Book.objects.get(id=self.book1.id)
with self.assertNumQueries(1):
- prefetch_related_objects([book1], Prefetch('authors'))
+ prefetch_related_objects([book1], Prefetch("authors"))
with self.assertNumQueries(0):
- self.assertCountEqual(book1.authors.all(), [self.author1, self.author2, self.author3])
+ self.assertCountEqual(
+ book1.authors.all(), [self.author1, self.author2, self.author3]
+ )
def test_prefetch_object_twice(self):
book1 = Book.objects.get(id=self.book1.id)
book2 = Book.objects.get(id=self.book2.id)
with self.assertNumQueries(1):
- prefetch_related_objects([book1], Prefetch('authors'))
+ prefetch_related_objects([book1], Prefetch("authors"))
with self.assertNumQueries(1):
- prefetch_related_objects([book1, book2], Prefetch('authors'))
+ prefetch_related_objects([book1, book2], Prefetch("authors"))
with self.assertNumQueries(0):
self.assertCountEqual(book2.authors.all(), [self.author1])
def test_prefetch_object_to_attr(self):
book1 = Book.objects.get(id=self.book1.id)
with self.assertNumQueries(1):
- prefetch_related_objects([book1], Prefetch('authors', to_attr='the_authors'))
+ prefetch_related_objects(
+ [book1], Prefetch("authors", to_attr="the_authors")
+ )
with self.assertNumQueries(0):
- self.assertCountEqual(book1.the_authors, [self.author1, self.author2, self.author3])
+ self.assertCountEqual(
+ book1.the_authors, [self.author1, self.author2, self.author3]
+ )
def test_prefetch_object_to_attr_twice(self):
book1 = Book.objects.get(id=self.book1.id)
@@ -121,12 +130,12 @@ class PrefetchRelatedObjectsTests(TestCase):
with self.assertNumQueries(1):
prefetch_related_objects(
[book1],
- Prefetch('authors', to_attr='the_authors'),
+ Prefetch("authors", to_attr="the_authors"),
)
with self.assertNumQueries(1):
prefetch_related_objects(
[book1, book2],
- Prefetch('authors', to_attr='the_authors'),
+ Prefetch("authors", to_attr="the_authors"),
)
with self.assertNumQueries(0):
self.assertCountEqual(book2.the_authors, [self.author1])
@@ -136,7 +145,12 @@ class PrefetchRelatedObjectsTests(TestCase):
with self.assertNumQueries(1):
prefetch_related_objects(
[book1],
- Prefetch('authors', queryset=Author.objects.filter(id__in=[self.author1.id, self.author2.id]))
+ Prefetch(
+ "authors",
+ queryset=Author.objects.filter(
+ id__in=[self.author1.id, self.author2.id]
+ ),
+ ),
)
with self.assertNumQueries(0):