Removed try/fail antipattern from model_options tests.

tests/model_options/test_default_related_name.py

@@ -5,42 +5,25 @@ from .models.default_related_name import Author, Book, Editor
 
 class DefaultRelatedNameTests(TestCase):
 
-    def setUp(self):
-        self.author = Author.objects.create(first_name="Dave", last_name="Loper")
-        self.editor = Editor.objects.create(name="Test Editions",
-                                            bestselling_author=self.author)
-        self.book = Book.objects.create(title="Test Book", editor=self.editor)
-        self.book.authors.add(self.author)
-        self.book.save()
+    @classmethod
+    def setUpTestData(cls):
+        cls.author = Author.objects.create(first_name='Dave', last_name='Loper')
+        cls.editor = Editor.objects.create(name='Test Editions', bestselling_author=cls.author)
+        cls.book = Book.objects.create(title='Test Book', editor=cls.editor)
+        cls.book.authors.add(cls.author)
 
     def test_no_default_related_name(self):
-        try:
-            self.author.editor_set
-        except AttributeError:
-            self.fail("Author should have an editor_set relation.")
+        self.assertEqual(list(self.author.editor_set.all()), [self.editor])
 
     def test_default_related_name(self):
-        try:
-            self.author.books
-        except AttributeError:
-            self.fail("Author should have a books relation.")
+        self.assertEqual(list(self.author.books.all()), [self.book])
 
     def test_related_name_overrides_default_related_name(self):
-        try:
-            self.editor.edited_books
-        except AttributeError:
-            self.fail("Editor should have a edited_books relation.")
+        self.assertEqual(list(self.editor.edited_books.all()), [self.book])
 
     def test_inheritance(self):
-        try:
-            # Here model_options corresponds to the name of the application used
-            # in this test
-            self.book.model_options_bookstores
-        except AttributeError:
-            self.fail("Book should have a model_options_bookstores relation.")
+        # model_options is the name of the application for this test.
+        self.assertEqual(list(self.book.model_options_bookstores.all()), [])
 
     def test_inheritance_with_overridden_default_related_name(self):
-        try:
-            self.book.editor_stores
-        except AttributeError:
-            self.fail("Book should have a editor_stores relation.")
+        self.assertEqual(list(self.book.editor_stores.all()), [])