Merge pull request #2223 from antlarr/master

Fix send_file's attachment_filename to work with non-ascii filenames

tests/test_helpers.py

@@ -540,10 +540,11 @@ class TestSendfile(object):
                 value, options = \
                     parse_options_header(rv.headers['Content-Disposition'])
                 assert value == 'attachment'
+                assert options['filename'] == 'index.html'
+                assert 'filename*' not in rv.headers['Content-Disposition']
                 rv.close()
 
         with app.test_request_context():
-            assert options['filename'] == 'index.html'
             rv = flask.send_file('static/index.html', as_attachment=True)
             value, options = parse_options_header(rv.headers['Content-Disposition'])
             assert value == 'attachment'
@@ -560,6 +561,19 @@ class TestSendfile(object):
             assert options['filename'] == 'index.txt'
             rv.close()
 
+    def test_attachment_with_utf8_filename(self):
+        app = flask.Flask(__name__)
+
+        with app.test_request_context():
+            rv = flask.send_file('static/index.html', as_attachment=True, attachment_filename=u'Ñandú／pingüino.txt')
+            content_disposition = set(rv.headers['Content-Disposition'].split('; '))
+            assert content_disposition == set((
+                'attachment',
+                'filename="Nandu/pinguino.txt"',
+                "filename*=UTF-8''%C3%91and%C3%BA%EF%BC%8Fping%C3%BCino.txt"
+            ))
+            rv.close()
+
     def test_static_file(self):
         app = flask.Flask(__name__)
         # default cache timeout is 12 hours