| Server IP : 74.208.127.88 / Your IP : 3.149.241.32 Web Server : Apache/2.4.41 (Ubuntu) System : Linux ubuntu 5.4.0-163-generic #180-Ubuntu SMP Tue Sep 5 13:21:23 UTC 2023 x86_64 User : www-data ( 33) PHP Version : 7.4.3-4ubuntu2.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /lib/python3/dist-packages/twisted/internet/test/ |
Upload File : |
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Whitebox tests for L{twisted.internet.abstract.FileDescriptor}.
"""
from __future__ import division, absolute_import
from zope.interface.verify import verifyClass
from twisted.internet.abstract import FileDescriptor
from twisted.internet.interfaces import IPushProducer
from twisted.trial.unittest import SynchronousTestCase
class MemoryFile(FileDescriptor):
"""
A L{FileDescriptor} customization which writes to a Python list in memory
with certain limitations.
@ivar _written: A C{list} of C{bytes} which have been accepted as written.
@ivar _freeSpace: A C{int} giving the number of bytes which will be accepted
by future writes.
"""
connected = True
def __init__(self):
FileDescriptor.__init__(self, reactor=object())
self._written = []
self._freeSpace = 0
def startWriting(self):
pass
def stopWriting(self):
pass
def writeSomeData(self, data):
"""
Copy at most C{self._freeSpace} bytes from C{data} into C{self._written}.
@return: A C{int} indicating how many bytes were copied from C{data}.
"""
acceptLength = min(self._freeSpace, len(data))
if acceptLength:
self._freeSpace -= acceptLength
self._written.append(data[:acceptLength])
return acceptLength
class FileDescriptorTests(SynchronousTestCase):
"""
Tests for L{FileDescriptor}.
"""
def test_writeWithUnicodeRaisesException(self):
"""
L{FileDescriptor.write} doesn't accept unicode data.
"""
fileDescriptor = FileDescriptor(reactor=object())
self.assertRaises(TypeError, fileDescriptor.write, u'foo')
def test_writeSequenceWithUnicodeRaisesException(self):
"""
L{FileDescriptor.writeSequence} doesn't accept unicode data.
"""
fileDescriptor = FileDescriptor(reactor=object())
self.assertRaises(
TypeError, fileDescriptor.writeSequence, [b'foo', u'bar', b'baz'])
def test_implementInterfaceIPushProducer(self):
"""
L{FileDescriptor} should implement L{IPushProducer}.
"""
self.assertTrue(verifyClass(IPushProducer, FileDescriptor))
class WriteDescriptorTests(SynchronousTestCase):
"""
Tests for L{FileDescriptor}'s implementation of L{IWriteDescriptor}.
"""
def test_kernelBufferFull(self):
"""
When L{FileDescriptor.writeSomeData} returns C{0} to indicate no more
data can be written immediately, L{FileDescriptor.doWrite} returns
L{None}.
"""
descriptor = MemoryFile()
descriptor.write(b"hello, world")
self.assertIsNone(descriptor.doWrite())