diff --git a/tests/model_inheritance/tests.py b/tests/model_inheritance/tests.py
index ad85a653d5b..7ab75b6cc3b 100644
--- a/tests/model_inheritance/tests.py
+++ b/tests/model_inheritance/tests.py
@@ -461,8 +461,8 @@ class InheritanceSameModelNameTests(SimpleTestCase):
         ForeignReferent = Referent
 
         self.assertFalse(hasattr(Referenced, related_name))
-        self.assertTrue(Referenced.model_inheritance_referent_references.rel.model, LocalReferent)
-        self.assertTrue(Referenced.tests_referent_references.rel.model, ForeignReferent)
+        self.assertIs(Referenced.model_inheritance_referent_references.field.model, LocalReferent)
+        self.assertIs(Referenced.tests_referent_references.field.model, ForeignReferent)
 
 
 class InheritanceUniqueTests(TestCase):
diff --git a/tests/queries/tests.py b/tests/queries/tests.py
index c592086fd48..0d553c82d43 100644
--- a/tests/queries/tests.py
+++ b/tests/queries/tests.py
@@ -93,8 +93,8 @@ class Queries1Tests(TestCase):
         self.assertEqual(qs4.query.subq_aliases, {'T', 'U', 'V'})
         # It is possible to reuse U for the second subquery, no need to use W.
         self.assertNotIn('w0', str(qs4.query).lower())
-        # So, 'U0."id"' is referenced twice.
-        self.assertTrue(str(qs4.query).lower().count('u0'), 2)
+        # So, 'U0."id"' is referenced in SELECT and WHERE twice.
+        self.assertEqual(str(qs4.query).lower().count('u0.'), 4)
 
     def test_ticket1050(self):
         self.assertQuerysetEqual(
@@ -511,7 +511,7 @@ class Queries1Tests(TestCase):
 
         # This is also a good select_related() test because there are multiple
         # Note entries in the SQL. The two Note items should be different.
-        self.assertTrue(repr(qs[0].note), '<Note: n2>')
+        self.assertEqual(repr(qs[0].note), '<Note: n2>')
         self.assertEqual(repr(qs[0].creator.extra.note), '<Note: n1>')
 
     def test_ticket3037(self):
diff --git a/tests/utils_tests/test_encoding.py b/tests/utils_tests/test_encoding.py
index 614029ad121..c461df71eed 100644
--- a/tests/utils_tests/test_encoding.py
+++ b/tests/utils_tests/test_encoding.py
@@ -28,7 +28,7 @@ class TestEncodingUtils(SimpleTestCase):
 
     def test_force_text_lazy(self):
         s = SimpleLazyObject(lambda: 'x')
-        self.assertTrue(type(force_text(s)), str)
+        self.assertIs(type(force_text(s)), str)
 
     def test_force_text_DjangoUnicodeDecodeError(self):
         msg = (