mirror of
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287 lines
11 KiB
Python
287 lines
11 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(
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response.headers["Content-Length"], str(os.path.getsize(__file__))
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)
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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(
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response.headers["Content-Length"], str(os.path.getsize(__file__) - 10)
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)
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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(
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response.headers["Content-Length"], str(os.path.getsize(__file__) - 10)
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)
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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(
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io.BytesIO(b"binary content"), content_type="video/webm"
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)
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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(
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io.BytesIO(b"binary content"), content_type="text/html; charset=utf-8"
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)
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self.assertEqual(response.headers["Content-Type"], "text/html; charset=utf-8")
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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), (
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as_attachment,
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header_disposition,
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) in itertools.product(filenames, dispositions):
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with self.subTest(filename=filename, disposition=header_disposition):
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response = FileResponse(
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open(__file__, "rb"), filename=filename, as_attachment=as_attachment
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)
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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_escaping(self):
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# fmt: off
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tests = [
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(
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'multi-part-one";\" dummy".txt',
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r"multi-part-one\";\" dummy\".txt"
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),
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]
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# fmt: on
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# Non-escape sequence backslashes are path segments on Windows, and are
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# eliminated by an os.path.basename() check in FileResponse.
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if sys.platform != "win32":
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# fmt: off
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tests += [
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(
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'multi-part-one\\";\" dummy".txt',
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r"multi-part-one\\\";\" dummy\".txt"
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),
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(
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'multi-part-one\\";\\\" dummy".txt',
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r"multi-part-one\\\";\\\" dummy\".txt"
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)
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]
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# fmt: on
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for filename, escaped in tests:
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with self.subTest(filename=filename, escaped=escaped):
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response = FileResponse(
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io.BytesIO(b"binary content"), filename=filename, as_attachment=True
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)
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response.close()
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self.assertEqual(
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response.headers["Content-Disposition"],
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f'attachment; filename="{escaped}"',
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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"],
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'%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(
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response.headers["Content-Disposition"],
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'inline; filename="test_fileresponse.py"',
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)
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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"),
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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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