234 lines
9.2 KiB
Python
234 lines
9.2 KiB
Python
import io
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import itertools
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import os
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import sys
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import tempfile
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from unittest import skipIf
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from django.core.files.base import ContentFile
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from django.http import FileResponse
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from django.test import SimpleTestCase
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class UnseekableBytesIO(io.BytesIO):
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def seekable(self):
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return False
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class FileResponseTests(SimpleTestCase):
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def test_content_length_file(self):
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response = FileResponse(open(__file__, 'rb'))
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response.close()
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self.assertEqual(response.headers['Content-Length'], str(os.path.getsize(__file__)))
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def test_content_length_buffer(self):
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response = FileResponse(io.BytesIO(b'binary content'))
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self.assertEqual(response.headers['Content-Length'], '14')
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def test_content_length_nonzero_starting_position_file(self):
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file = open(__file__, 'rb')
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file.seek(10)
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response = FileResponse(file)
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response.close()
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self.assertEqual(response.headers['Content-Length'], str(os.path.getsize(__file__) - 10))
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def test_content_length_nonzero_starting_position_buffer(self):
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test_tuples = (
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('BytesIO', io.BytesIO),
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('UnseekableBytesIO', UnseekableBytesIO),
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)
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for buffer_class_name, BufferClass in test_tuples:
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with self.subTest(buffer_class_name=buffer_class_name):
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buffer = BufferClass(b'binary content')
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buffer.seek(10)
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response = FileResponse(buffer)
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self.assertEqual(response.headers['Content-Length'], '4')
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def test_content_length_nonzero_starting_position_file_seekable_no_tell(self):
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class TestFile:
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def __init__(self, path, *args, **kwargs):
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self._file = open(path, *args, **kwargs)
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def read(self, n_bytes=-1):
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return self._file.read(n_bytes)
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def seek(self, offset, whence=io.SEEK_SET):
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return self._file.seek(offset, whence)
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def seekable(self):
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return True
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@property
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def name(self):
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return self._file.name
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def close(self):
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if self._file:
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self._file.close()
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self._file = None
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def __enter__(self):
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return self
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def __exit__(self, e_type, e_val, e_tb):
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self.close()
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file = TestFile(__file__, 'rb')
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file.seek(10)
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response = FileResponse(file)
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response.close()
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self.assertEqual(response.headers['Content-Length'], str(os.path.getsize(__file__) - 10))
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def test_content_type_file(self):
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response = FileResponse(open(__file__, 'rb'))
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response.close()
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self.assertIn(response.headers['Content-Type'], ['text/x-python', 'text/plain'])
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def test_content_type_buffer(self):
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response = FileResponse(io.BytesIO(b'binary content'))
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self.assertEqual(response.headers['Content-Type'], 'application/octet-stream')
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def test_content_type_buffer_explicit(self):
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response = FileResponse(io.BytesIO(b'binary content'), content_type='video/webm')
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self.assertEqual(response.headers['Content-Type'], 'video/webm')
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def test_content_type_buffer_explicit_default(self):
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response = FileResponse(io.BytesIO(b'binary content'), content_type='text/html')
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self.assertEqual(response.headers['Content-Type'], 'text/html')
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def test_content_type_buffer_named(self):
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test_tuples = (
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(__file__, ['text/x-python', 'text/plain']),
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(__file__ + 'nosuchfile', ['application/octet-stream']),
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('test_fileresponse.py', ['text/x-python', 'text/plain']),
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('test_fileresponse.pynosuchfile', ['application/octet-stream']),
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)
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for filename, content_types in test_tuples:
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with self.subTest(filename=filename):
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buffer = io.BytesIO(b'binary content')
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buffer.name = filename
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response = FileResponse(buffer)
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self.assertIn(response.headers['Content-Type'], content_types)
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def test_content_disposition_file(self):
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filenames = (
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('', 'test_fileresponse.py'),
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('custom_name.py', 'custom_name.py'),
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)
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dispositions = (
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(False, 'inline'),
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(True, 'attachment'),
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)
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for (filename, header_filename), (as_attachment, header_disposition) in itertools.product(
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filenames, dispositions
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):
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with self.subTest(filename=filename, disposition=header_disposition):
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response = FileResponse(open(__file__, 'rb'), filename=filename, as_attachment=as_attachment)
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response.close()
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self.assertEqual(
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response.headers['Content-Disposition'],
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'%s; filename="%s"' % (header_disposition, header_filename),
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)
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def test_content_disposition_buffer(self):
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response = FileResponse(io.BytesIO(b'binary content'))
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self.assertFalse(response.has_header('Content-Disposition'))
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def test_content_disposition_buffer_attachment(self):
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response = FileResponse(io.BytesIO(b'binary content'), as_attachment=True)
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self.assertEqual(response.headers['Content-Disposition'], 'attachment')
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def test_content_disposition_buffer_explicit_filename(self):
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dispositions = (
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(False, 'inline'),
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(True, 'attachment'),
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)
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for as_attachment, header_disposition in dispositions:
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response = FileResponse(
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io.BytesIO(b'binary content'),
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as_attachment=as_attachment,
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filename='custom_name.py',
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)
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self.assertEqual(
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response.headers['Content-Disposition'], '%s; filename="custom_name.py"' % header_disposition,
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)
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def test_response_buffer(self):
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response = FileResponse(io.BytesIO(b'binary content'))
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self.assertEqual(list(response), [b'binary content'])
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def test_response_nonzero_starting_position(self):
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test_tuples = (
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('BytesIO', io.BytesIO),
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('UnseekableBytesIO', UnseekableBytesIO),
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)
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for buffer_class_name, BufferClass in test_tuples:
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with self.subTest(buffer_class_name=buffer_class_name):
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buffer = BufferClass(b'binary content')
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buffer.seek(10)
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response = FileResponse(buffer)
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self.assertEqual(list(response), [b'tent'])
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def test_buffer_explicit_absolute_filename(self):
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"""
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Headers are set correctly with a buffer when an absolute filename is
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provided.
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"""
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response = FileResponse(io.BytesIO(b'binary content'), filename=__file__)
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self.assertEqual(response.headers['Content-Length'], '14')
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self.assertEqual(response.headers['Content-Disposition'], 'inline; filename="test_fileresponse.py"')
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@skipIf(sys.platform == 'win32', "Named pipes are Unix-only.")
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def test_file_from_named_pipe_response(self):
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with tempfile.TemporaryDirectory() as temp_dir:
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pipe_file = os.path.join(temp_dir, 'named_pipe')
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os.mkfifo(pipe_file)
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pipe_for_read = os.open(pipe_file, os.O_RDONLY | os.O_NONBLOCK)
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with open(pipe_file, 'wb') as pipe_for_write:
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pipe_for_write.write(b'binary content')
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response = FileResponse(os.fdopen(pipe_for_read, mode='rb'))
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response_content = list(response)
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response.close()
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self.assertEqual(response_content, [b'binary content'])
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self.assertFalse(response.has_header('Content-Length'))
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def test_compressed_response(self):
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"""
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If compressed responses are served with the uncompressed Content-Type
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and a compression Content-Encoding, browsers might automatically
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uncompress the file, which is most probably not wanted.
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"""
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test_tuples = (
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('.tar.gz', 'application/gzip'),
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('.tar.bz2', 'application/x-bzip'),
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('.tar.xz', 'application/x-xz'),
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)
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for extension, mimetype in test_tuples:
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with self.subTest(ext=extension):
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with tempfile.NamedTemporaryFile(suffix=extension) as tmp:
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response = FileResponse(tmp)
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self.assertEqual(response.headers['Content-Type'], mimetype)
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self.assertFalse(response.has_header('Content-Encoding'))
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def test_unicode_attachment(self):
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response = FileResponse(
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ContentFile(b'binary content', name="祝您平安.odt"), as_attachment=True,
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content_type='application/vnd.oasis.opendocument.text',
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)
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self.assertEqual(
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response.headers['Content-Type'],
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'application/vnd.oasis.opendocument.text',
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)
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self.assertEqual(
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response.headers['Content-Disposition'],
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"attachment; filename*=utf-8''%E7%A5%9D%E6%82%A8%E5%B9%B3%E5%AE%89.odt",
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)
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def test_repr(self):
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response = FileResponse(io.BytesIO(b'binary content'))
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self.assertEqual(
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repr(response),
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'<FileResponse status_code=200, "application/octet-stream">',
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)
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