diff --git a/tests/modeltests/model_package/tests.py b/tests/modeltests/model_package/tests.py
index 99970faba1..e63e2e63ea 100644
--- a/tests/modeltests/model_package/tests.py
+++ b/tests/modeltests/model_package/tests.py
@@ -1,81 +1,72 @@
+from django.contrib.sites.models import Site
 from django.db import models
+from django.test import TestCase
+
+from models.publication import Publication
+from models.article import Article
+
 
 class Advertisment(models.Model):
     customer = models.CharField(max_length=100)
-    publications = models.ManyToManyField("model_package.Publication", null=True, blank=True)
+    publications = models.ManyToManyField(
+        "model_package.Publication", null=True, blank=True
+    )
 
     class Meta:
         app_label = 'model_package'
 
-__test__ = {'API_TESTS': """
->>> from models.publication import Publication
->>> from models.article import Article
 
->>> p = Publication(title="FooBar")
->>> p.save()
->>> p
-<Publication: Publication object>
+class ModelPackageTests(TestCase):
+    def test_model_packages(self):
+        p = Publication.objects.create(title="FooBar")
 
->>> from django.contrib.sites.models import Site
->>> current_site = Site.objects.get_current()
->>> current_site
-<Site: example.com>
+        current_site = Site.objects.get_current()
+        self.assertEqual(current_site.domain, "example.com")
 
-# Regression for #12168: models split into subpackages still get M2M tables
+        # Regression for #12168: models split into subpackages still get M2M
+        # tables
+        a = Article.objects.create(headline="a foo headline")
+        a.publications.add(p)
+        a.sites.add(current_site)
 
->>> a = Article(headline="a foo headline")
->>> a.save()
->>> a.publications.add(p)
->>> a.sites.add(current_site)
+        a = Article.objects.get(id=a.pk)
+        self.assertEqual(a.id, a.pk)
+        self.assertEqual(a.sites.count(), 1)
 
->>> a = Article.objects.get(id=1)
->>> a
-<Article: Article object>
->>> a.id
-1
->>> a.sites.count()
-1
+        # Regression for #12245 - Models can exist in the test package, too
+        ad = Advertisment.objects.create(customer="Lawrence Journal-World")
+        ad.publications.add(p)
 
-# Regression for #12245 - Models can exist in the test package, too
+        ad = Advertisment.objects.get(id=ad.pk)
+        self.assertEqual(ad.publications.count(), 1)
 
->>> ad = Advertisment(customer="Lawrence Journal-World")
->>> ad.save()
->>> ad.publications.add(p)
-
->>> ad = Advertisment.objects.get(id=1)
->>> ad
-<Advertisment: Advertisment object>
-
->>> ad.publications.count()
-1
-
-# Regression for #12386 - field names on the autogenerated intermediate class
-# that are specified as dotted strings don't retain any path component for the
-# field or column name
-
->>> Article.publications.through._meta.fields[1].name
-'article'
-
->>> Article.publications.through._meta.fields[1].get_attname_column()
-('article_id', 'article_id')
-
->>> Article.publications.through._meta.fields[2].name
-'publication'
-
->>> Article.publications.through._meta.fields[2].get_attname_column()
-('publication_id', 'publication_id')
-
-# The oracle backend truncates the name to 'model_package_article_publ233f'.
->>> Article._meta.get_field('publications').m2m_db_table() \\
-... in ('model_package_article_publications', 'model_package_article_publ233f')
-True
-
->>> Article._meta.get_field('publications').m2m_column_name()
-'article_id'
-
->>> Article._meta.get_field('publications').m2m_reverse_name()
-'publication_id'
-
-"""}
+        # Regression for #12386 - field names on the autogenerated intermediate
+        # class that are specified as dotted strings don't retain any path
+        # component for the field or column name
+        self.assertEqual(
+            Article.publications.through._meta.fields[1].name, 'article'
+        )
+        self.assertEqual(
+            Article.publications.through._meta.fields[1].get_attname_column(),
+            ('article_id', 'article_id')
+        )
+        self.assertEqual(
+            Article.publications.through._meta.fields[2].name, 'publication'
+        )
+        self.assertEqual(
+            Article.publications.through._meta.fields[2].get_attname_column(),
+            ('publication_id', 'publication_id')
+        )
 
+        # The oracle backend truncates the name to 'model_package_article_publ233f'.
+        self.assertTrue(
+            Article._meta.get_field('publications').m2m_db_table() in ('model_package_article_publications', 'model_package_article_publ233f')
+        )
 
+        self.assertEqual(
+            Article._meta.get_field('publications').m2m_column_name(), 'article_id'
+        )
+        self.assertEqual(
+            Article._meta.get_field('publications').m2m_reverse_name(),
+            'publication_id'
+        )