Add resolve tests.

test/conftest.py

@@ -40,6 +40,41 @@ def output_spy():
 	return _OutputSpy()
 
 
+class _VirtualGlobalSocket(object):
+	def __init__(self, vsocket):
+		self.vsocket = vsocket
+		self.addrinfodata = {}
+	
+	# pylint: disable=unused-argument
+	def create_connection(self, address, timeout=0, source_address=None):
+		# pylint: disable=protected-access
+		return self.vsocket._connect(address, True)
+	
+	# pylint: disable=unused-argument
+	def socket(self,
+	           family=socket.AF_INET,
+	           socktype=socket.SOCK_STREAM,
+	           proto=0,
+	           fileno=None):
+		return self.vsocket
+	
+	def getaddrinfo(self, host, port, family=0, socktype=0, proto=0, flags=0):
+		key = '{0}#{1}'.format(host, port)
+		if key in self.addrinfodata:
+			data = self.addrinfodata[key]
+			if isinstance(data, Exception):
+				raise data
+			return data
+		if host == 'localhost':
+			r = []
+			if family in (0, socket.AF_INET):
+				r.append((socket.AF_INET, 1, 6, '', ('127.0.0.1', port)))
+			if family in (0, socket.AF_INET6):
+				r.append((socket.AF_INET6, 1, 6, '', ('::1', port)))
+			return r
+		return []
+
+
 class _VirtualSocket(object):
 	def __init__(self):
 		self.sock_address = ('127.0.0.1', 0)
@@ -49,6 +84,7 @@ class _VirtualSocket(object):
 		self.rdata = []
 		self.sdata = []
 		self.errors = {}
+		self.gsock = _VirtualGlobalSocket(self)
 	
 	def _check_err(self, method):
 		method_error = self.errors.get(method)
@@ -113,18 +149,8 @@ class _VirtualSocket(object):
 @pytest.fixture()
 def virtual_socket(monkeypatch):
 	vsocket = _VirtualSocket()
-	
-	# pylint: disable=unused-argument
-	def _socket(family=socket.AF_INET,
-	            socktype=socket.SOCK_STREAM,
-	            proto=0,
-	            fileno=None):
-		return vsocket
-	
-	def _cc(address, timeout=0, source_address=None):
-		# pylint: disable=protected-access
-		return vsocket._connect(address, True)
-	
-	monkeypatch.setattr(socket, 'create_connection', _cc)
-	monkeypatch.setattr(socket, 'socket', _socket)
+	gsock = vsocket.gsock
+	monkeypatch.setattr(socket, 'create_connection', gsock.create_connection)
+	monkeypatch.setattr(socket, 'socket', gsock.socket)
+	monkeypatch.setattr(socket, 'getaddrinfo', gsock.getaddrinfo)
 	return vsocket

test/test_errors.py

@@ -30,6 +30,13 @@ class TestErrors(object):
 		lines = spy.flush()
 		return lines
 	
+	def test_connection_unresolved(self, output_spy, virtual_socket):
+		vsocket = virtual_socket
+		vsocket.gsock.addrinfodata['localhost#22'] = []
+		lines = self._audit(output_spy)
+		assert len(lines) == 1
+		assert 'has no DNS records' in lines[-1]
+	
 	def test_connection_refused(self, output_spy, virtual_socket):
 		vsocket = virtual_socket
 		vsocket.errors['connect'] = socket.error(errno.ECONNREFUSED, 'Connection refused')
@@ -91,6 +98,7 @@ class TestErrors(object):
 	def test_connection_closed_after_header(self, output_spy, virtual_socket):
 		vsocket = virtual_socket
 		vsocket.rdata.append(b'header line 1\n')
+		vsocket.rdata.append(b'\n')
 		vsocket.rdata.append(b'header line 2\n')
 		vsocket.rdata.append(socket.error(errno.ECONNRESET, 'Connection reset by peer'))
 		lines = self._audit(output_spy)

test/test_resolve.py

@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+import socket
+import pytest
+
+
+# pylint: disable=attribute-defined-outside-init,protected-access
+class TestResolve(object):
+	@pytest.fixture(autouse=True)
+	def init(self, ssh_audit):
+		self.AuditConf = ssh_audit.AuditConf
+		self.audit = ssh_audit.audit
+		self.ssh = ssh_audit.SSH
+	
+	def _conf(self):
+		conf = self.AuditConf('localhost', 22)
+		conf.colors = False
+		conf.batch = True
+		return conf
+	
+	def test_resolve_error(self, output_spy, virtual_socket):
+		vsocket = virtual_socket
+		vsocket.gsock.addrinfodata['localhost#22'] = socket.gaierror(8, 'hostname nor servname provided, or not known')
+		s = self.ssh.Socket('localhost', 22)
+		conf = self._conf()
+		output_spy.begin()
+		with pytest.raises(SystemExit):
+			r = list(s._resolve(conf.ipvo))
+		lines = output_spy.flush()
+		assert len(lines) == 1
+		assert 'hostname nor servname provided' in lines[-1]
+	
+	def test_resolve_hostname_without_records(self, output_spy, virtual_socket):
+		vsocket = virtual_socket
+		vsocket.gsock.addrinfodata['localhost#22'] = []
+		s = self.ssh.Socket('localhost', 22)
+		conf = self._conf()
+		output_spy.begin()
+		r = list(s._resolve(conf.ipvo))
+		assert len(r) == 0
+	
+	def test_resolve_ipv4(self, virtual_socket):
+		vsocket = virtual_socket
+		conf = self._conf()
+		conf.ipv4 = True
+		s = self.ssh.Socket('localhost', 22)
+		r = list(s._resolve(conf.ipvo))
+		assert len(r) == 1
+		assert r[0] == (socket.AF_INET, ('127.0.0.1', 22))
+	
+	def test_resolve_ipv6(self, virtual_socket):
+		vsocket = virtual_socket
+		s = self.ssh.Socket('localhost', 22)
+		conf = self._conf()
+		conf.ipv6 = True
+		r = list(s._resolve(conf.ipvo))
+		assert len(r) == 1
+		assert r[0] == (socket.AF_INET6, ('::1', 22))
+	
+	def test_resolve_ipv46_both(self, virtual_socket):
+		vsocket = virtual_socket
+		s = self.ssh.Socket('localhost', 22)
+		conf = self._conf()
+		r = list(s._resolve(conf.ipvo))
+		assert len(r) == 2
+		assert r[0] == (socket.AF_INET, ('127.0.0.1', 22))
+		assert r[1] == (socket.AF_INET6, ('::1', 22))
+	
+	def test_resolve_ipv46_order(self, virtual_socket):
+		vsocket = virtual_socket
+		s = self.ssh.Socket('localhost', 22)
+		conf = self._conf()
+		conf.ipv4 = True
+		conf.ipv6 = True
+		r = list(s._resolve(conf.ipvo))
+		assert len(r) == 2
+		assert r[0] == (socket.AF_INET, ('127.0.0.1', 22))
+		assert r[1] == (socket.AF_INET6, ('::1', 22))
+		conf = self._conf()
+		conf.ipv6 = True
+		conf.ipv4 = True
+		r = list(s._resolve(conf.ipvo))
+		assert len(r) == 2
+		assert r[0] == (socket.AF_INET6, ('::1', 22))
+		assert r[1] == (socket.AF_INET, ('127.0.0.1', 22))