Refs #33476 -- Reformatted code with Black.

tests/m2m_regress/models.py

@@ -6,8 +6,8 @@ from django.db import models
 # explicitly reversible.
 class SelfRefer(models.Model):
     name = models.CharField(max_length=10)
-    references = models.ManyToManyField('self')
-    related = models.ManyToManyField('self')
+    references = models.ManyToManyField("self")
+    related = models.ManyToManyField("self")
 
     def __str__(self):
         return self.name
@@ -22,7 +22,7 @@ class Tag(models.Model):
 
 # Regression for #11956 -- a many to many to the base class
 class TagCollection(Tag):
-    tags = models.ManyToManyField(Tag, related_name='tag_collections')
+    tags = models.ManyToManyField(Tag, related_name="tag_collections")
 
     def __str__(self):
         return self.name
@@ -77,18 +77,19 @@ class BadModelWithSplit(models.Model):
         abstract = True
 
     def split(self):
-        raise RuntimeError('split should not be called')
+        raise RuntimeError("split should not be called")
 
 
 class RegressionModelSplit(BadModelWithSplit):
     """
     Model with a split method should not cause an error in add_lazy_relation
     """
-    others = models.ManyToManyField('self')
+
+    others = models.ManyToManyField("self")
 
 
 # Regression for #24505 -- Two ManyToManyFields with the same "to" model
 # and related_name set to '+'.
 class Post(models.Model):
-    primary_lines = models.ManyToManyField(Line, related_name='+')
-    secondary_lines = models.ManyToManyField(Line, related_name='+')
+    primary_lines = models.ManyToManyField(Line, related_name="+")
+    secondary_lines = models.ManyToManyField(Line, related_name="+")

tests/m2m_regress/tests.py

@@ -2,8 +2,16 @@ from django.core.exceptions import FieldError
 from django.test import TestCase
 
 from .models import (
-    Entry, Line, Post, RegressionModelSplit, SelfRefer, SelfReferChild,
-    SelfReferChildSibling, Tag, TagCollection, Worksheet,
+    Entry,
+    Line,
+    Post,
+    RegressionModelSplit,
+    SelfRefer,
+    SelfReferChild,
+    SelfReferChildSibling,
+    Tag,
+    TagCollection,
+    Worksheet,
 )
 
 
@@ -12,15 +20,15 @@ class M2MRegressionTests(TestCase):
         # Multiple m2m references to model must be distinguished when
         # accessing the relations through an instance attribute.
 
-        s1 = SelfRefer.objects.create(name='s1')
-        s2 = SelfRefer.objects.create(name='s2')
-        s3 = SelfRefer.objects.create(name='s3')
+        s1 = SelfRefer.objects.create(name="s1")
+        s2 = SelfRefer.objects.create(name="s2")
+        s3 = SelfRefer.objects.create(name="s3")
         s1.references.add(s2)
         s1.related.add(s3)
 
-        e1 = Entry.objects.create(name='e1')
-        t1 = Tag.objects.create(name='t1')
-        t2 = Tag.objects.create(name='t2')
+        e1 = Entry.objects.create(name="e1")
+        t1 = Tag.objects.create(name="t1")
+        t2 = Tag.objects.create(name="t2")
 
         e1.topics.add(t1)
         e1.related.add(t2)
@@ -32,8 +40,8 @@ class M2MRegressionTests(TestCase):
         self.assertSequenceEqual(e1.related.all(), [t2])
 
     def test_m2m_managers_reused(self):
-        s1 = SelfRefer.objects.create(name='s1')
-        e1 = Entry.objects.create(name='e1')
+        s1 = SelfRefer.objects.create(name="s1")
+        e1 = Entry.objects.create(name="e1")
         self.assertIs(s1.references, s1.references)
         self.assertIs(s1.related, s1.related)
         self.assertIs(e1.topics, e1.topics)
@@ -46,7 +54,7 @@ class M2MRegressionTests(TestCase):
             FieldError,
             "Choices are: id, name, references, related, selfreferchild, selfreferchildsibling",
         ):
-            SelfRefer.objects.filter(porcupine='fred')
+            SelfRefer.objects.filter(porcupine="fred")
 
     def test_m2m_inheritance_symmetry(self):
         # Test to ensure that the relationship between two inherited models
@@ -66,7 +74,7 @@ class M2MRegressionTests(TestCase):
         # Regression for #11311 - The primary key for models in a m2m relation
         # doesn't have to be an AutoField
 
-        w = Worksheet(id='abc')
+        w = Worksheet(id="abc")
         w.save()
         w.delete()
 
@@ -74,12 +82,12 @@ class M2MRegressionTests(TestCase):
         # Regression for #11956 -- You can add an object to a m2m with the
         # base class without causing integrity errors
 
-        t1 = Tag.objects.create(name='t1')
-        t2 = Tag.objects.create(name='t2')
+        t1 = Tag.objects.create(name="t1")
+        t2 = Tag.objects.create(name="t2")
 
-        c1 = TagCollection.objects.create(name='c1')
+        c1 = TagCollection.objects.create(name="c1")
         c1.tags.set([t1, t2])
-        c1 = TagCollection.objects.get(name='c1')
+        c1 = TagCollection.objects.get(name="c1")
 
         self.assertCountEqual(c1.tags.all(), [t1, t2])
         self.assertCountEqual(t1.tag_collections.all(), [c1])
@@ -101,26 +109,26 @@ class M2MRegressionTests(TestCase):
     def test_m2m_abstract_split(self):
         # Regression for #19236 - an abstract class with a 'split' method
         # causes a TypeError in add_lazy_relation
-        m1 = RegressionModelSplit(name='1')
+        m1 = RegressionModelSplit(name="1")
         m1.save()
 
     def test_assigning_invalid_data_to_m2m_doesnt_clear_existing_relations(self):
-        t1 = Tag.objects.create(name='t1')
-        t2 = Tag.objects.create(name='t2')
-        c1 = TagCollection.objects.create(name='c1')
+        t1 = Tag.objects.create(name="t1")
+        t2 = Tag.objects.create(name="t2")
+        c1 = TagCollection.objects.create(name="c1")
         c1.tags.set([t1, t2])
 
         with self.assertRaisesMessage(TypeError, "'int' object is not iterable"):
             c1.tags.set(7)
 
         c1.refresh_from_db()
-        self.assertSequenceEqual(c1.tags.order_by('name'), [t1, t2])
+        self.assertSequenceEqual(c1.tags.order_by("name"), [t1, t2])
 
     def test_multiple_forwards_only_m2m(self):
         # Regression for #24505 - Multiple ManyToManyFields to same "to"
         # model with related_name set to '+'.
-        foo = Line.objects.create(name='foo')
-        bar = Line.objects.create(name='bar')
+        foo = Line.objects.create(name="foo")
+        bar = Line.objects.create(name="bar")
         post = Post.objects.create()
         post.primary_lines.add(foo)
         post.secondary_lines.add(bar)