Refs #15667 -- Prevented newlines in attrs.html widget rendering.

Removed the trailing newline from widget attrs.html template.
The solution may be revisited by fixing refs #9198 but not
for Django 1.11.

Thanks Dmitry Ivanchenko for the report and Preston Timmons for advice.

1 files changed, 7 insertions, 2 deletions

diff --git a/tests/forms_tests/widget_tests/test_widget.py b/tests/forms_tests/widget_tests/test_widget.py
index 3911627a0c..595748a7b2 100644
--- a/tests/forms_tests/widget_tests/test_widget.py
+++ b/tests/forms_tests/widget_tests/test_widget.py
@@ -1,12 +1,17 @@
 from __future__ import unicode_literals
 
 from django.forms import Widget
-from django.test import SimpleTestCase
+from django.forms.widgets import Input
 
+from .base import WidgetTest
 
-class WidgetTests(SimpleTestCase):
+
+class WidgetTests(WidgetTest):
 
     def test_value_omitted_from_data(self):
         widget = Widget()
         self.assertIs(widget.value_omitted_from_data({}, {}, 'field'), True)
         self.assertIs(widget.value_omitted_from_data({'field': 'value'}, {}, 'field'), False)
+
+    def test_no_trailing_newline_in_attrs(self):
+        self.check_html(Input(), 'name', 'value', strict=True, html='<input type="None" name="name" value="value" />')