Add test for HTMLFormRenderer when is UTC

Author: mgaligniana

tests/test_renderers.py

@@ -490,6 +490,11 @@ class TestSerializer(serializers.Serializer):
 
 
 class TestDateTimeFieldHTMLFormRender(TestCase):
+    """
+    Default USE_TZ is True.
+    Default TIME_ZONE is 'America/Chicago'.
+    """
+
     def test_datetime_field_rendering_milliseconds(self):
         class TestSerializer(serializers.Serializer):
             appointment = serializers.DateTimeField()
@@ -550,6 +555,22 @@ class TestSerializer(serializers.Serializer):
             rendered
         )
 
+    @override_settings(TIME_ZONE='UTC', USE_TZ=True)
+    def test_datetime_field_utc(self):
+        class TestSerializer(serializers.Serializer):
+            appointment = serializers.DateTimeField()
+
+        appointment = datetime(2024, 12, 24, 0, 55, 30, 345678)
+        serializer = TestSerializer(data={"appointment": appointment})
+        serializer.is_valid()
+        renderer = HTMLFormRenderer()
+        field = serializer['appointment']
+        rendered = renderer.render_field(field, {})
+        self.assertInHTML(
+            '<input name="appointment" class="form-control" type="datetime-local" value="2024-12-24T00:55:30.345">',
+            rendered
+        )
+
 
 class TestHTMLFormRenderer(TestCase):
     def setUp(self):