Refs #27236 -- Moved models with Meta.index_together inside of test methods.

tests/indexes/models.py

@@ -43,15 +43,6 @@ class Article(models.Model):
         ]
 
 
-# Model for index_together being used only with single list
-class IndexTogetherSingleList(models.Model):
-    headline = models.CharField(max_length=100)
-    pub_date = models.DateTimeField()
-
-    class Meta:
-        index_together = ["headline", "pub_date"]
-
-
 class IndexedArticle(models.Model):
     headline = models.CharField(max_length=100, db_index=True)
     body = models.TextField(db_index=True)

tests/indexes/tests.py

@@ -3,7 +3,15 @@ from unittest import skipUnless
 
 from django.conf import settings
 from django.db import connection
-from django.db.models import CASCADE, ForeignKey, Index, Q
+from django.db.models import (
+    CASCADE,
+    CharField,
+    DateTimeField,
+    ForeignKey,
+    Index,
+    Model,
+    Q,
+)
 from django.db.models.functions import Lower
 from django.test import (
     TestCase,
@@ -11,15 +19,10 @@ from django.test import (
     skipIfDBFeature,
     skipUnlessDBFeature,
 )
-from django.test.utils import override_settings
+from django.test.utils import isolate_apps, override_settings
 from django.utils import timezone
 
-from .models import (
-    Article,
-    ArticleTranslation,
-    IndexedArticle2,
-    IndexTogetherSingleList,
-)
+from .models import Article, ArticleTranslation, IndexedArticle2
 
 
 class SchemaIndexesTests(TestCase):
@@ -79,8 +82,15 @@ class SchemaIndexesTests(TestCase):
             index_sql[0],
         )
 
+    @isolate_apps("indexes")
     def test_index_together_single_list(self):
-        # Test for using index_together with a single list (#22172)
+        class IndexTogetherSingleList(Model):
+            headline = CharField(max_length=100)
+            pub_date = DateTimeField()
+
+            class Meta:
+                index_together = ["headline", "pub_date"]
+
         index_sql = connection.schema_editor()._model_indexes_sql(
             IndexTogetherSingleList
         )

tests/schema/models.py

@@ -62,15 +62,6 @@ class AuthorWithUniqueName(models.Model):
         apps = new_apps
 
 
-class AuthorWithIndexedNameAndBirthday(models.Model):
-    name = models.CharField(max_length=255)
-    birthday = models.DateField()
-
-    class Meta:
-        apps = new_apps
-        index_together = [["name", "birthday"]]
-
-
 class AuthorWithUniqueNameAndBirthday(models.Model):
     name = models.CharField(max_length=255)
     birthday = models.DateField()
@@ -180,15 +171,6 @@ class Tag(models.Model):
         apps = new_apps
 
 
-class TagIndexed(models.Model):
-    title = models.CharField(max_length=255)
-    slug = models.SlugField(unique=True)
-
-    class Meta:
-        apps = new_apps
-        index_together = [["slug", "title"]]
-
-
 class TagM2MTest(models.Model):
     title = models.CharField(max_length=255)
     slug = models.SlugField(unique=True)

tests/schema/tests.py

@@ -64,7 +64,6 @@ from .models import (
     AuthorWithDefaultHeight,
     AuthorWithEvenLongerName,
     AuthorWithIndexedName,
-    AuthorWithIndexedNameAndBirthday,
     AuthorWithUniqueName,
     AuthorWithUniqueNameAndBirthday,
     Book,
@@ -79,7 +78,6 @@ from .models import (
     Note,
     NoteRename,
     Tag,
-    TagIndexed,
     TagM2MTest,
     TagUniqueRename,
     Thing,
@@ -114,7 +112,6 @@ class SchemaTests(TransactionTestCase):
         Node,
         Note,
         Tag,
-        TagIndexed,
         TagM2MTest,
         TagUniqueRename,
         Thing,
@@ -2952,13 +2949,24 @@ class SchemaTests(TransactionTestCase):
         with connection.schema_editor() as editor:
             editor.alter_index_together(Book, [["author", "title"]], [])
 
+    @isolate_apps("schema")
     def test_create_index_together(self):
         """
         Tests creating models with index_together already defined
         """
+
+        class TagIndexed(Model):
+            title = CharField(max_length=255)
+            slug = SlugField(unique=True)
+
+            class Meta:
+                app_label = "schema"
+                index_together = [["slug", "title"]]
+
         # Create the table
         with connection.schema_editor() as editor:
             editor.create_model(TagIndexed)
+        self.isolated_local_models = [TagIndexed]
         # Ensure there is an index
         self.assertIs(
             any(
@@ -2970,10 +2978,19 @@ class SchemaTests(TransactionTestCase):
         )
 
     @skipUnlessDBFeature("allows_multiple_constraints_on_same_fields")
+    @isolate_apps("schema")
     def test_remove_index_together_does_not_remove_meta_indexes(self):
+        class AuthorWithIndexedNameAndBirthday(Model):
+            name = CharField(max_length=255)
+            birthday = DateField()
+
+            class Meta:
+                app_label = "schema"
+                index_together = [["name", "birthday"]]
+
         with connection.schema_editor() as editor:
             editor.create_model(AuthorWithIndexedNameAndBirthday)
-        self.local_models = [AuthorWithIndexedNameAndBirthday]
+        self.isolated_local_models = [AuthorWithIndexedNameAndBirthday]
         # Add the custom index
         index = Index(fields=["name", "birthday"], name="author_name_birthday_idx")
         custom_index_name = index.name