diff options
| -rw-r--r-- | paramiko/file.py | 7 | ||||
| -rwxr-xr-x | tests/test_file.py | 57 |
2 files changed, 52 insertions, 12 deletions
diff --git a/paramiko/file.py b/paramiko/file.py index 5212091a..35637b8e 100644 --- a/paramiko/file.py +++ b/paramiko/file.py @@ -18,7 +18,7 @@ from paramiko.common import ( linefeed_byte_value, crlf, cr_byte, linefeed_byte, cr_byte_value, ) -from paramiko.py3compat import BytesIO, PY2, u, b, bytes_types +from paramiko.py3compat import BytesIO, PY2, u, bytes_types, text_type from paramiko.util import ClosingContextManager @@ -391,7 +391,10 @@ class BufferedFile (ClosingContextManager): :param data: ``str``/``bytes`` data to write """ - data = b(data) + if isinstance(data, text_type): + # GZ 2017-05-25: Accepting text on a binary stream unconditionally + # cooercing to utf-8 seems questionable, but compatibility reasons? + data = data.encode('utf-8') if self._closed: raise IOError('File is closed') if not (self._flags & self.FLAG_WRITE): diff --git a/tests/test_file.py b/tests/test_file.py index 7fab6985..b33ecd51 100755 --- a/tests/test_file.py +++ b/tests/test_file.py @@ -21,10 +21,14 @@ Some unit tests for the BufferedFile abstraction. """ import unittest -from paramiko.file import BufferedFile -from paramiko.common import linefeed_byte, crlf, cr_byte import sys +from paramiko.common import linefeed_byte, crlf, cr_byte +from paramiko.file import BufferedFile +from paramiko.py3compat import BytesIO + +from tests import skipUnlessBuiltin + class LoopbackFile (BufferedFile): """ @@ -33,19 +37,16 @@ class LoopbackFile (BufferedFile): def __init__(self, mode='r', bufsize=-1): BufferedFile.__init__(self) self._set_mode(mode, bufsize) - self.buffer = bytes() + self.buffer = BytesIO() + self.offset = 0 def _read(self, size): - if len(self.buffer) == 0: - return None - if size > len(self.buffer): - size = len(self.buffer) - data = self.buffer[:size] - self.buffer = self.buffer[size:] + data = self.buffer.getvalue()[self.offset:self.offset+size] + self.offset += len(data) return data def _write(self, data): - self.buffer += data + self.buffer.write(data) return len(data) @@ -187,6 +188,42 @@ class BufferedFileTest (unittest.TestCase): self.assertEqual(data, b'hello') f.close() + def test_write_bad_type(self): + with LoopbackFile('wb') as f: + self.assertRaises(TypeError, f.write, object()) + + def test_write_unicode_as_binary(self): + text = u"\xa7 why is writing text to a binary file allowed?\n" + with LoopbackFile('rb+') as f: + f.write(text) + self.assertEqual(f.read(), text.encode("utf-8")) + + @skipUnlessBuiltin('memoryview') + def test_write_bytearray(self): + with LoopbackFile('rb+') as f: + f.write(bytearray(12)) + self.assertEqual(f.read(), 12 * b"\0") + + @skipUnlessBuiltin('buffer') + def test_write_buffer(self): + data = 3 * b"pretend giant block of data\n" + offsets = range(0, len(data), 8) + with LoopbackFile('rb+') as f: + for offset in offsets: + f.write(buffer(data, offset, 8)) + self.assertEqual(f.read(), data) + + @skipUnlessBuiltin('memoryview') + def test_write_memoryview(self): + data = 3 * b"pretend giant block of data\n" + offsets = range(0, len(data), 8) + with LoopbackFile('rb+') as f: + view = memoryview(data) + for offset in offsets: + f.write(view[offset:offset+8]) + self.assertEqual(f.read(), data) + + if __name__ == '__main__': from unittest import main main() |