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# Copyright (c) Twisted Matrix Laboratories.# See LICENSE for details.
 
 """
 Tests for L{twisted.web.vhost}.
 """
 
 from __future__ import absolute_import, division
 
 from twisted.internet.defer import gatherResults
 from twisted.trial.unittest import TestCase
 from twisted.web.http import NOT_FOUND
 from twisted.web.resource import NoResource
 from twisted.web.static import Data
 from twisted.web.server import Site
 from twisted.web.vhost import (_HostResource,
 NameVirtualHost,
 VHostMonsterResource)
 from twisted.web.test.test_web import DummyRequest
 from twisted.web.test._util import _render
 
 
 class HostResourceTests(TestCase):
 """
 Tests for L{_HostResource}.
 """
 def test_getChild(self):
 """
 L{_HostResource.getChild} returns the proper I{Resource} for the vhost
 embedded in the URL.  Verify that returning the proper I{Resource}
 required changing the I{Host} in the header.
 """
 bazroot = Data(b'root data', "")
 bazuri  = Data(b'uri data', "")
 baztest = Data(b'test data', "")
 bazuri.putChild(b'test', baztest)
 bazroot.putChild(b'uri', bazuri)
 hr = _HostResource()
 
 root = NameVirtualHost()
 root.default = Data(b'default data', "")
 root.addHost(b'baz.com', bazroot)
 
 request = DummyRequest([b'uri', b'test'])
 request.prepath = [b'bar', b'http', b'baz.com']
 request.site = Site(root)
 request.isSecure = lambda: False
 request.host = b''
 
 step = hr.getChild(b'baz.com', request) # Consumes rest of path
 self.assertIsInstance(step, Data)
 
 request = DummyRequest([b'uri', b'test'])
 step = root.getChild(b'uri', request)
 self.assertIsInstance(step, NoResource)
 
 
 
 class NameVirtualHostTests(TestCase):
 """
 Tests for L{NameVirtualHost}.
 """
 def test_renderWithoutHost(self):
 """
 L{NameVirtualHost.render} returns the result of rendering the
 instance's C{default} if it is not C{None} and there is no I{Host}
 header in the request.
 """
 virtualHostResource = NameVirtualHost()
 virtualHostResource.default = Data(b"correct result", "")
 request = DummyRequest([''])
 self.assertEqual(
 virtualHostResource.render(request), b"correct result")
 
 
 def test_renderWithoutHostNoDefault(self):
 """
 L{NameVirtualHost.render} returns a response with a status of I{NOT
 FOUND} if the instance's C{default} is C{None} and there is no I{Host}
 header in the request.
 """
 virtualHostResource = NameVirtualHost()
 request = DummyRequest([''])
 d = _render(virtualHostResource, request)
 def cbRendered(ignored):
 self.assertEqual(request.responseCode, NOT_FOUND)
 d.addCallback(cbRendered)
 return d
 
 
 def test_renderWithHost(self):
 """
 L{NameVirtualHost.render} returns the result of rendering the resource
 which is the value in the instance's C{host} dictionary corresponding
 to the key indicated by the value of the I{Host} header in the request.
 """
 virtualHostResource = NameVirtualHost()
 virtualHostResource.addHost(b'example.org', Data(b"winner", ""))
 
 request = DummyRequest([b''])
 request.requestHeaders.addRawHeader(b'host', b'example.org')
 d = _render(virtualHostResource, request)
 def cbRendered(ignored, request):
 self.assertEqual(b''.join(request.written), b"winner")
 d.addCallback(cbRendered, request)
 
 # The port portion of the Host header should not be considered.
 requestWithPort = DummyRequest([b''])
 requestWithPort.requestHeaders.addRawHeader(b'host', b'example.org:8000')
 dWithPort = _render(virtualHostResource, requestWithPort)
 def cbRendered(ignored, requestWithPort):
 self.assertEqual(b''.join(requestWithPort.written), b"winner")
 dWithPort.addCallback(cbRendered, requestWithPort)
 
 return gatherResults([d, dWithPort])
 
 
 def test_renderWithUnknownHost(self):
 """
 L{NameVirtualHost.render} returns the result of rendering the
 instance's C{default} if it is not C{None} and there is no host
 matching the value of the I{Host} header in the request.
 """
 virtualHostResource = NameVirtualHost()
 virtualHostResource.default = Data(b"correct data", "")
 request = DummyRequest([b''])
 request.requestHeaders.addRawHeader(b'host', b'example.com')
 d = _render(virtualHostResource, request)
 def cbRendered(ignored):
 self.assertEqual(b''.join(request.written), b"correct data")
 d.addCallback(cbRendered)
 return d
 
 
 def test_renderWithUnknownHostNoDefault(self):
 """
 L{NameVirtualHost.render} returns a response with a status of I{NOT
 FOUND} if the instance's C{default} is C{None} and there is no host
 matching the value of the I{Host} header in the request.
 """
 virtualHostResource = NameVirtualHost()
 request = DummyRequest([''])
 request.requestHeaders.addRawHeader(b'host', b'example.com')
 d = _render(virtualHostResource, request)
 def cbRendered(ignored):
 self.assertEqual(request.responseCode, NOT_FOUND)
 d.addCallback(cbRendered)
 return d
 
 
 def test_getChild(self):
 """
 L{NameVirtualHost.getChild} returns correct I{Resource} based off
 the header and modifies I{Request} to ensure proper prepath and
 postpath are set.
 """
 virtualHostResource = NameVirtualHost()
 leafResource = Data(b"leaf data", "")
 leafResource.isLeaf = True
 normResource = Data(b"norm data", "")
 virtualHostResource.addHost(b'leaf.example.org', leafResource)
 virtualHostResource.addHost(b'norm.example.org', normResource)
 
 request = DummyRequest([])
 request.requestHeaders.addRawHeader(b'host', b'norm.example.org')
 request.prepath = [b'']
 
 self.assertIsInstance(virtualHostResource.getChild(b'', request),
 NoResource)
 self.assertEqual(request.prepath, [b''])
 self.assertEqual(request.postpath, [])
 
 request = DummyRequest([])
 request.requestHeaders.addRawHeader(b'host', b'leaf.example.org')
 request.prepath = [b'']
 
 self.assertIsInstance(virtualHostResource.getChild(b'', request),
 Data)
 self.assertEqual(request.prepath,  [])
 self.assertEqual(request.postpath, [b''])
 
 
 
 class VHostMonsterResourceTests(TestCase):
 """
 Tests for L{VHostMonsterResource}.
 """
 def test_getChild(self):
 """
 L{VHostMonsterResource.getChild} returns I{_HostResource} and modifies
 I{Request} with correct L{Request.isSecure}.
 """
 vhm = VHostMonsterResource()
 request = DummyRequest([])
 self.assertIsInstance(vhm.getChild(b'http', request), _HostResource)
 self.assertFalse(request.isSecure())
 
 request = DummyRequest([])
 self.assertIsInstance(vhm.getChild(b'https', request), _HostResource)
 self.assertTrue(request.isSecure())
 
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