text: import py
  
  XSpec = py.execnet.XSpec
  
  class TestXSpec:
      def test_norm_attributes(self):
          spec = XSpec("socket=192.168.102.2:8888//python=c:/this/python2.5//chdir=d:\hello")
          assert spec.socket == "192.168.102.2:8888"
          assert spec.python == "c:/this/python2.5" 
          assert spec.chdir == "d:\hello"
          assert spec.nice is None
          assert not hasattr(spec, 'xyz')
  
          py.test.raises(AttributeError, "spec._hello")
  
          spec = XSpec("socket=192.168.102.2:8888//python=python2.5//nice=3")
          assert spec.socket == "192.168.102.2:8888"
          assert spec.python == "python2.5"
          assert spec.chdir is None
          assert spec.nice == "3"
  
          spec = XSpec("ssh=user@host//chdir=/hello/this//python=/usr/bin/python2.5")
          assert spec.ssh == "user@host"
          assert spec.python == "/usr/bin/python2.5"
          assert spec.chdir == "/hello/this"
  
          spec = XSpec("popen")
          assert spec.popen == True
  
      def test__samefilesystem(self):
          assert XSpec("popen")._samefilesystem()
          assert XSpec("popen//python=123")._samefilesystem()
          assert not XSpec("popen//chdir=hello")._samefilesystem()
  
      def test__spec_spec(self):
          for x in ("popen", "popen//python=this"):
              assert XSpec(x)._spec == x
  
      def test_repr(self):
          for x in ("popen", "popen//python=this"):
              assert repr(XSpec(x)).find("popen") != -1
  
      def test_hash_equality(self):
          assert XSpec("popen") == XSpec("popen")
          assert hash(XSpec("popen")) == hash(XSpec("popen"))
          assert XSpec("popen//python=123") != XSpec("popen")
          assert hash(XSpec("socket=hello:8080")) != hash(XSpec("popen"))
  
  class TestMakegateway:
      def test_popen(self):
          gw = py.execnet.makegateway("popen")
          assert gw.spec.python == None
          rinfo = gw._rinfo()
          assert rinfo.executable == py.std.sys.executable 
          assert rinfo.cwd == py.std.os.getcwd()
          assert rinfo.version_info == py.std.sys.version_info
  
      def test_popen_nice(self):
          gw = py.execnet.makegateway("popen//nice=5")
          remotenice = gw.remote_exec("""
              import os
              if hasattr(os, 'nice'):
                  channel.send(os.nice(0))
              else:
                  channel.send(None)
          """).receive()
          if remotenice is not None:
              assert remotenice == 5
  
      def test_popen_explicit(self):
          gw = py.execnet.makegateway("popen//python=%s" % py.std.sys.executable)
          assert gw.spec.python == py.std.sys.executable
          rinfo = gw._rinfo()
          assert rinfo.executable == py.std.sys.executable 
          assert rinfo.cwd == py.std.os.getcwd()
          assert rinfo.version_info == py.std.sys.version_info
  
      def test_popen_cpython24(self):
          for trypath in ('python2.4', r'C:\Python24\python.exe'):
              cpython24 = py.path.local.sysfind(trypath)
              if cpython24 is not None:
                  cpython24 = cpython24.realpath()
                  break
          else:
              py.test.skip("cpython2.4 not found")
          gw = py.execnet.makegateway("popen//python=%s" % cpython24)
          rinfo = gw._rinfo()
          if py.std.sys.platform != "darwin": # it's confusing there 
              assert rinfo.executable == cpython24  
          assert rinfo.cwd == py.std.os.getcwd()
          assert rinfo.version_info[:2] == (2,4)
  
      def test_popen_cpython26(self):
          for trypath in ('python2.6', r'C:\Python26\python.exe'):
              cpython26 = py.path.local.sysfind(trypath)
              if cpython26 is not None:
                  break
          else:
              py.test.skip("cpython2.6 not found")
          gw = py.execnet.makegateway("popen//python=%s" % cpython26)
          rinfo = gw._rinfo()
          assert rinfo.executable == cpython26
          assert rinfo.cwd == py.std.os.getcwd()
          assert rinfo.version_info[:2] == (2,6)
  
      def test_popen_chdir_absolute(self, testdir):
          gw = py.execnet.makegateway("popen//chdir=%s" % testdir.tmpdir)
          rinfo = gw._rinfo()
          assert rinfo.cwd == str(testdir.tmpdir.realpath())
  
      def test_popen_chdir_newsub(self, testdir):
          testdir.chdir()
          gw = py.execnet.makegateway("popen//chdir=hello")
          rinfo = gw._rinfo()
          assert rinfo.cwd == str(testdir.tmpdir.join("hello").realpath())
  
      def test_ssh(self, specssh):
          sshhost = specssh.ssh
          gw = py.execnet.makegateway("ssh=%s" % sshhost)
          rinfo = gw._rinfo()
          gw2 = py.execnet.SshGateway(sshhost)
          rinfo2 = gw2._rinfo()
          assert rinfo.executable == rinfo2.executable
          assert rinfo.cwd == rinfo2.cwd
          assert rinfo.version_info == rinfo2.version_info
  
      def test_socket(self, specsocket):
          gw = py.execnet.makegateway("socket=%s" % specsocket.socket)
          rinfo = gw._rinfo()
          assert rinfo.executable 
          assert rinfo.cwd 
          assert rinfo.version_info 
          # we cannot instantiate a second gateway
  
          #gw2 = py.execnet.SocketGateway(*specsocket.socket.split(":"))
          #rinfo2 = gw2._rinfo()
          #assert rinfo.executable == rinfo2.executable
          #assert rinfo.cwd == rinfo2.cwd
          #assert rinfo.version_info == rinfo2.version_info
  