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Create virtual socket fixture (socket mocking).
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commit
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@ -1,6 +1,6 @@
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#!/usr/bin/env python
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# -*- coding: utf-8 -*-
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import pytest, os, sys, io
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import pytest, os, sys, io, socket
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if sys.version_info[0] == 2:
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if sys.version_info[0] == 2:
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@ -33,3 +33,80 @@ class _OutputSpy(list):
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@pytest.fixture(scope='module')
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@pytest.fixture(scope='module')
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def output_spy():
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def output_spy():
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return _OutputSpy()
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return _OutputSpy()
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class _VirtualSocket(object):
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def __init__(self):
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self.sock_address = ('127.0.0.1', 0)
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self.peer_address = None
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self._connected = False
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self.timeout = -1.0
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self.rdata = []
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self.sdata = []
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self.errors = {}
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def _check_err(self, method):
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method_error = self.errors.get(method)
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if method_error:
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raise method_error
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def _connect(self, address):
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self.peer_address = address
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self._connected = True
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self._check_err('connect')
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return self
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def settimeout(self, timeout):
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self.timeout = timeout
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def gettimeout(self):
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return self.timeout
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def getpeername(self):
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if self.peer_address is None or not self._connected:
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raise socket.error(57, 'Socket is not connected')
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return self.peer_address
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def getsockname(self):
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return self.sock_address
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def bind(self, address):
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self.sock_address = address
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def listen(self, backlog):
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pass
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def accept(self):
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conn = _VirtualSocket()
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conn.sock_address = self.sock_address
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conn.peer_address = ('127.0.0.1', 0)
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conn._connected = True
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return conn, conn.peer_address
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def recv(self, bufsize, flags=0):
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if not self._connected:
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raise socket.error(54, 'Connection reset by peer')
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if not len(self.rdata) > 0:
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return b''
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data = self.rdata.pop(0)
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if isinstance(data, Exception):
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raise data
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return data
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def send(self, data):
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if self.peer_address is None or not self._connected:
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raise socket.error(32, 'Broken pipe')
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self._check_err('send')
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self.sdata.append(data)
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@pytest.fixture()
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def virtual_socket(monkeypatch):
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vsocket = _VirtualSocket()
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def _c(address):
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return vsocket._connect(address)
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def _cc(address, timeout=0, source_address=None):
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return vsocket._connect(address)
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monkeypatch.setattr(socket, 'create_connection', _cc)
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monkeypatch.setattr(socket.socket, 'connect', _c)
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return vsocket
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