text: '''
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License.  You may obtain a copy of the License at
  
  http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing,
  software distributed under the License is distributed on an
  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  KIND, either express or implied.  See the License for the
  specific language governing permissions and limitations
  under the License.
  '''
  import pytest
  
  from tornado import ioloop, gen
  
  from gremlin_python import statics
  from gremlin_python.statics import long
  from gremlin_python.driver.driver_remote_connection import (
      DriverRemoteConnection)
  from gremlin_python.process.traversal import Traverser
  from gremlin_python.process.traversal import TraversalStrategy
  from gremlin_python.process.traversal import P
  from gremlin_python.process.graph_traversal import __
  from gremlin_python.process.anonymous_traversal import traversal
  from gremlin_python.structure.graph import Vertex
  from gremlin_python.process.strategies import SubgraphStrategy
  
  __author__ = 'Marko A. Rodriguez (http://markorodriguez.com)'
  
  
  class TestDriverRemoteConnection(object):
      def test_traversals(self, remote_connection):
          statics.load_statics(globals())
          assert "remoteconnection[ws://localhost:45940/gremlin,gmodern]" == str(remote_connection)
          g = traversal().withRemote(remote_connection)
  
          assert long(6) == g.V().count().toList()[0]
          # #
          assert Vertex(1) == g.V(1).next()
          assert 1 == g.V(1).id().next()
          assert Traverser(Vertex(1)) == g.V(1).nextTraverser()
          assert 1 == len(g.V(1).toList())
          assert isinstance(g.V(1).toList(), list)
          results = g.V().repeat(out()).times(2).name
          results = results.toList()
          assert 2 == len(results)
          assert "lop" in results
          assert "ripple" in results
          # #
          assert 10 == g.V().repeat(both()).times(5)[0:10].count().next()
          assert 1 == g.V().repeat(both()).times(5)[0:1].count().next()
          assert 0 == g.V().repeat(both()).times(5)[0:0].count().next()
          assert 4 == g.V()[2:].count().next()
          assert 2 == g.V()[:2].count().next()
          # #
          results = g.withSideEffect('a', ['josh', 'peter']).V(1).out('created').in_('created').values('name').where(
              within('a')).toList()
          assert 2 == len(results)
          assert 'josh' in results
          assert 'peter' in results
          # #
          results = g.V().out().profile().toList()
          assert 1 == len(results)
          assert 'metrics' in results[0]
          assert 'dur' in results[0]
          # #
          results = g.V().has('name', 'peter').as_('a').out('created').as_('b').select('a', 'b').by(
              __.valueMap()).toList()
          assert 1 == len(results)
          assert 'peter' == results[0]['a']['name'][0]
          assert 35 == results[0]['a']['age'][0]
          assert 'lop' == results[0]['b']['name'][0]
          assert 'java' == results[0]['b']['lang'][0]
          assert 2 == len(results[0]['a'])
          assert 2 == len(results[0]['b'])
          # #
          results = g.V(1).inject(g.V(2).next()).values('name').toList()
          assert 2 == len(results)
          assert 'marko' in results
          assert 'vadas' in results
          # #
          # this test just validates that the underscored versions of steps conflicting with Gremlin work
          # properly and can be removed when the old steps are removed - TINKERPOP-2272
          results = g.V().filter_(__.values('age').sum_().and_(
              __.max_().is_(gt(0)), __.min_().is_(gt(0)))).range_(0, 1).id_().next()
          assert 1 == results
  
      def test_iteration(self, remote_connection):
          statics.load_statics(globals())
          assert "remoteconnection[ws://localhost:45940/gremlin,gmodern]" == str(remote_connection)
          g = traversal().withRemote(remote_connection)
  
          t = g.V().count()
          assert t.hasNext()
          assert t.hasNext()
          assert t.hasNext()
          assert t.hasNext()
          assert t.hasNext()
          assert 6 == t.next()
          assert not(t.hasNext())
          assert not(t.hasNext())
          assert not(t.hasNext())
          assert not(t.hasNext())
          assert not(t.hasNext())
  
          t = g.V().has('name', P.within('marko', 'peter')).values('name').order()
          assert "marko" == t.next()
          assert t.hasNext()
          assert t.hasNext()
          assert t.hasNext()
          assert t.hasNext()
          assert t.hasNext()
          assert "peter" == t.next()
          assert not(t.hasNext())
          assert not(t.hasNext())
          assert not(t.hasNext())
          assert not(t.hasNext())
          assert not(t.hasNext())
  
          try:
              t.next()
              assert False
          except StopIteration:
              assert True
  
      def test_strategies(self, remote_connection):
          statics.load_statics(globals())
          #
          g = traversal().withRemote(remote_connection). \
              withStrategies(TraversalStrategy("SubgraphStrategy",
                                               {"vertices": __.hasLabel("person"),
                                                "edges": __.hasLabel("created")}))
          assert 4 == g.V().count().next()
          assert 0 == g.E().count().next()
          assert 1 == g.V().label().dedup().count().next()
          assert 4 == g.V().filter(lambda: ("lambda x: True", "gremlin-python")).count().next()
          assert "person" == g.V().label().dedup().next()
          #
          g = traversal().withRemote(remote_connection). \
              withStrategies(SubgraphStrategy(vertices=__.hasLabel("person"), edges=__.hasLabel("created")))
          assert 4 == g.V().count().next()
          assert 0 == g.E().count().next()
          assert 1 == g.V().label().dedup().count().next()
          assert "person" == g.V().label().dedup().next()
          #
          g = traversal().withRemote(remote_connection). \
              withStrategies(SubgraphStrategy(edges=__.hasLabel("created")))
          assert 6 == g.V().count().next()
          assert 4 == g.E().count().next()
          assert 1 == g.E().label().dedup().count().next()
          assert "created" == g.E().label().dedup().next()
          #
          g = g.withoutStrategies(SubgraphStrategy). \
              withComputer(vertices=__.has("name", "marko"), edges=__.limit(0))
          assert 1 == g.V().count().next()
          assert 0 == g.E().count().next()
          assert "person" == g.V().label().next()
          assert "marko" == g.V().name.next()
          #
          g = traversal().withRemote(remote_connection).withComputer()
          assert 6 == g.V().count().next()
          assert 6 == g.E().count().next()
  
      def test_side_effects(self, remote_connection):
          statics.load_statics(globals())
          #
          g = traversal().withRemote(remote_connection)
          ###
          t = g.V().hasLabel("project").name.iterate()
          assert 0 == len(t.side_effects.keys())
          with pytest.raises(Exception):
              m = t.side_effects["m"]
          ###
          t = g.V().out("created").groupCount("m").by("name")
          results = t.toSet()
          assert 2 == len(results)
          assert Vertex(3) in results
          assert Vertex(5) in results
          assert 1 == len(t.side_effects.keys())
          assert "m" in t.side_effects.keys()
          m = t.side_effects["m"]
          assert isinstance(m, dict)
          assert 2 == len(m)
          assert 3 == m["lop"]
          assert 1 == m["ripple"]
          assert isinstance(m["lop"], long)
          assert isinstance(m["ripple"], long)
  
          # check status attributes
          assert "host" in t.side_effects.status_attributes
  
          ##
          t = g.V().out("created").groupCount("m").by("name").name.aggregate("n")
          results = t.toSet()
          assert 2 == len(results)
          assert "lop" in results
          assert "ripple" in results
          assert 2 == len(t.side_effects.keys())
          assert "m" in t.side_effects.keys()
          assert "n" in t.side_effects.keys()
          n = t.side_effects.get("n")
          assert isinstance(n, dict)
          assert 2 == len(n)
          assert "lop" in n.keys()
          assert "ripple" in n.keys()
          assert 3 == n["lop"]
          assert 1 == n["ripple"]
  
          t = g.withSideEffect('m', 32).V().map(lambda: "x: x.sideEffects('m')")
          results = t.toSet()
          assert 1 == len(results)
          assert 32 == list(results)[0]
          assert 32 == t.side_effects['m']
          assert 1 == len(t.side_effects.keys())
          with pytest.raises(Exception):
              x = t.side_effects["x"]
  
          a = g.V().has("name", "marko").next()
          b = g.V().has("name", "peter").next()
          edge = g.withSideEffect("b", b).V(a).addE("knows").to("b").next()
          assert "knows" == edge.label
          assert a == edge.outV
          assert b == edge.inV
          g.V().has("name", "marko").outE("knows").where(__.inV().has("name", "peter")).drop().iterate()
          ##
          edge = g.withSideEffect("a", a).withSideEffect("b", b).V().limit(1).addE("knows").from_("a").to("b").next()
          assert "knows" == edge.label
          assert a == edge.outV
          assert b == edge.inV
          g.V().has("name", "marko").outE("knows").where(__.inV().has("name", "peter")).drop().iterate()
  
      def test_side_effect_close(self, remote_connection):
          g = traversal().withRemote(remote_connection)
          t = g.V().aggregate('a').aggregate('b')
          t.toList()
  
          # The 'a' key should return some side effects
          results = t.side_effects.get('a')
          assert results
  
          # Close result is None
          results = t.side_effects.close()
          assert not results
  
          # Shouldn't get any new info from server
          # 'b' isn't in local cache
          results = t.side_effects.get('b')
          assert not results
  
          # But 'a' should still be cached locally
          results = t.side_effects.get('a')
          assert results
  
          # 'a' should have been added to local keys cache, but not 'b'
          results = t.side_effects.keys()
          assert len(results) == 1
          a, = results
          assert a == 'a'
  
          # Try to get 'b' directly from server, should throw error
          with pytest.raises(Exception):
              t.side_effects.value_lambda('b')
  
      def test_promise(self, remote_connection):
          g = traversal().withRemote(remote_connection)
          future = g.V().aggregate('a').promise()
          t = future.result()
          assert len(t.toList()) == 6
          a, = t.side_effects.keys()
          assert a == 'a'
          results = t.side_effects.get('a')
          assert results
          results = t.side_effects.close()
          assert not results
  
  
  def test_in_tornado_app(remote_connection):
      # Make sure nothing weird with loops
      @gen.coroutine
      def go():
          conn = DriverRemoteConnection(
              'ws://localhost:45940/gremlin', 'gmodern', pool_size=4)
          g = traversal().withRemote(conn)
          yield gen.sleep(0)
          assert len(g.V().toList()) == 6
          conn.close()
  
      io_loop = ioloop.IOLoop.current()
      io_loop.run_sync(go)
  