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from __future__ import unicode_literals
import gzip
import io
from django.http import HttpRequest, HttpResponse, StreamingHttpResponse
from django.test import SimpleTestCase
from django.test.client import conditional_content_removal
# based on Python 3.3's gzip.compress
def gzip_compress(data):
buf = io.BytesIO()
with gzip.GzipFile(fileobj=buf, mode='wb', compresslevel=0) as f:
f.write(data)
return buf.getvalue()
class ConditionalContentTests(SimpleTestCase):
def test_conditional_content_removal(self):
"""
Content is removed from regular and streaming responses with a
status_code of 100-199, 204, 304, or a method of "HEAD".
"""
req = HttpRequest()
# Do nothing for 200 responses.
res = HttpResponse('abc')
conditional_content_removal(req, res)
self.assertEqual(res.content, b'abc')
res = StreamingHttpResponse(['abc'])
conditional_content_removal(req, res)
self.assertEqual(b''.join(res), b'abc')
# Strip content for some status codes.
for status_code in (100, 150, 199, 204, 304):
res = HttpResponse('abc', status=status_code)
conditional_content_removal(req, res)
self.assertEqual(res.content, b'')
res = StreamingHttpResponse(['abc'], status=status_code)
conditional_content_removal(req, res)
self.assertEqual(b''.join(res), b'')
# Issue #20472
abc = gzip_compress(b'abc')
res = HttpResponse(abc, status=304)
res['Content-Encoding'] = 'gzip'
conditional_content_removal(req, res)
self.assertEqual(res.content, b'')
res = StreamingHttpResponse([abc], status=304)
res['Content-Encoding'] = 'gzip'
conditional_content_removal(req, res)
self.assertEqual(b''.join(res), b'')
# Strip content for HEAD requests.
req.method = 'HEAD'
res = HttpResponse('abc')
conditional_content_removal(req, res)
self.assertEqual(res.content, b'')
res = StreamingHttpResponse(['abc'])
conditional_content_removal(req, res)
self.assertEqual(b''.join(res), b'')
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