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import io
import os
import sys
import tempfile
from unittest import skipIf
from django.core.files.base import ContentFile
from django.http import FileResponse
from django.test import SimpleTestCase
class FileResponseTests(SimpleTestCase):
def test_file_from_disk_response(self):
response = FileResponse(open(__file__, 'rb'))
self.assertEqual(response['Content-Length'], str(os.path.getsize(__file__)))
self.assertIn(response['Content-Type'], ['text/x-python', 'text/plain'])
response.close()
def test_file_from_buffer_response(self):
response = FileResponse(io.BytesIO(b'binary content'))
self.assertEqual(response['Content-Length'], '14')
self.assertEqual(response['Content-Type'], 'application/octet-stream')
self.assertEqual(list(response), [b'binary content'])
@skipIf(sys.platform == 'win32', "Named pipes are Unix-only.")
def test_file_from_named_pipe_response(self):
with tempfile.TemporaryDirectory() as temp_dir:
pipe_file = os.path.join(temp_dir, 'named_pipe')
os.mkfifo(pipe_file)
pipe_for_read = os.open(pipe_file, os.O_RDONLY | os.O_NONBLOCK)
with open(pipe_file, 'wb') as pipe_for_write:
pipe_for_write.write(b'binary content')
response = FileResponse(os.fdopen(pipe_for_read, mode='rb'))
self.assertEqual(list(response), [b'binary content'])
response.close()
self.assertFalse(response.has_header('Content-Length'))
def test_file_from_disk_as_attachment(self):
response = FileResponse(open(__file__, 'rb'), as_attachment=True)
self.assertEqual(response['Content-Length'], str(os.path.getsize(__file__)))
self.assertIn(response['Content-Type'], ['text/x-python', 'text/plain'])
self.assertEqual(response['Content-Disposition'], 'attachment; filename="test_fileresponse.py"')
response.close()
def test_compressed_response(self):
"""
If compressed responses are served with the uncompressed Content-Type
and a compression Content-Encoding, browsers might automatically
uncompress the file, which is most probably not wanted.
"""
test_tuples = (
('.tar.gz', 'application/gzip'),
('.tar.bz2', 'application/x-bzip'),
('.tar.xz', 'application/x-xz'),
)
for extension, mimetype in test_tuples:
with self.subTest(ext=extension):
with tempfile.NamedTemporaryFile(suffix=extension) as tmp:
response = FileResponse(tmp)
self.assertEqual(response['Content-Type'], mimetype)
self.assertFalse(response.has_header('Content-Encoding'))
def test_unicode_attachment(self):
response = FileResponse(
ContentFile(b'binary content', name="祝您平安.odt"), as_attachment=True,
content_type='application/vnd.oasis.opendocument.text',
)
self.assertEqual(response['Content-Type'], 'application/vnd.oasis.opendocument.text')
self.assertEqual(
response['Content-Disposition'],
"attachment; filename*=utf-8''%E7%A5%9D%E6%82%A8%E5%B9%B3%E5%AE%89.odt"
)
def test_content_disposition_escaping(self):
# fmt: off
tests = [
(
'multi-part-one";\" dummy".txt',
r"multi-part-one\";\" dummy\".txt"
),
]
# fmt: on
# Non-escape sequence backslashes are path segments on Windows, and are
# eliminated by an os.path.basename() check in FileResponse.
if sys.platform != "win32":
# fmt: off
tests += [
(
'multi-part-one\\";\" dummy".txt',
r"multi-part-one\\\";\" dummy\".txt"
),
(
'multi-part-one\\";\\\" dummy".txt',
r"multi-part-one\\\";\\\" dummy\".txt"
)
]
# fmt: on
for filename, escaped in tests:
with self.subTest(filename=filename, escaped=escaped):
response = FileResponse(
io.BytesIO(b"binary content"), filename=filename, as_attachment=True
)
response.close()
self.assertEqual(
response["Content-Disposition"],
f'attachment; filename="{escaped}"',
)
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