Used more specific test assertions.

3 files changed, 5 insertions, 5 deletions

diff --git a/tests/backends/tests.py b/tests/backends/tests.py
index c8c1875e26..ee1e56676f 100644
--- a/tests/backends/tests.py
+++ b/tests/backends/tests.py
@@ -646,7 +646,7 @@ class BackendTestCase(TestCase):
         Test that cursors can be used as a context manager
         """
         with connection.cursor() as cursor:
-            self.assertTrue(isinstance(cursor, CursorWrapper))
+            self.assertIsInstance(cursor, CursorWrapper)
         # Both InterfaceError and ProgrammingError seem to be used when
         # accessing closed cursor (psycopg2 has InterfaceError, rest seem
         # to use ProgrammingError).
@@ -661,7 +661,7 @@ class BackendTestCase(TestCase):
         # psycopg2 offers us a way to check that by closed attribute.
         # So, run only on psycopg2 for that reason.
         with connection.cursor() as cursor:
-            self.assertTrue(isinstance(cursor, CursorWrapper))
+            self.assertIsInstance(cursor, CursorWrapper)
         self.assertTrue(cursor.closed)
 
 
diff --git a/tests/forms_tests/tests/test_forms.py b/tests/forms_tests/tests/test_forms.py
index d2e80d5b4d..2db40ef55c 100644
--- a/tests/forms_tests/tests/test_forms.py
+++ b/tests/forms_tests/tests/test_forms.py
@@ -1908,7 +1908,7 @@ class FormsTestCase(TestCase):
 
         field = ChoicesField()
         field2 = copy.deepcopy(field)
-        self.assertTrue(isinstance(field2, ChoicesField))
+        self.assertIsInstance(field2, ChoicesField)
         self.assertFalse(id(field2.fields) == id(field.fields))
         self.assertFalse(id(field2.fields[0].choices) ==
                          id(field.fields[0].choices))
@@ -2152,7 +2152,7 @@ class FormsTestCase(TestCase):
         e.append('Foo')
         e.append(ValidationError('Foo%(bar)s', code='foobar', params={'bar': 'bar'}))
 
-        self.assertTrue(isinstance(e, list))
+        self.assertIsInstance(e, list)
         self.assertIn('Foo', e)
         self.assertIn('Foo', forms.ValidationError(e))
 
diff --git a/tests/model_fields/tests.py b/tests/model_fields/tests.py
index 754ad20e5d..e8c798adc5 100644
--- a/tests/model_fields/tests.py
+++ b/tests/model_fields/tests.py
@@ -298,7 +298,7 @@ class BooleanFieldTests(unittest.TestCase):
         # conversions are applied with an offset
         b5 = BooleanModel.objects.all().extra(
             select={'string_col': 'string'})[0]
-        self.assertFalse(isinstance(b5.pk, bool))
+        self.assertNotIsInstance(b5.pk, bool)
 
     def test_select_related(self):
         """