text: "use strict";
  /* global describe,it,before,after,beforeEach,afterEach*/
  require("requirish")._(module);
  
  var async = require("async");
  var should = require("should");
  var build_server_with_temperature_device = require("test/helpers/build_server_with_temperature_device").build_server_with_temperature_device;
  var perform_operation_on_client_session = require("test/helpers/perform_operation_on_client_session").perform_operation_on_client_session;
  
  var opcua = require("index");
  var makeNodeId = opcua.makeNodeId;
  var DataType = opcua.DataType;
  var AttributeIds = opcua.AttributeIds;
  var OPCUAClient = opcua.OPCUAClient;
  
  var address_space_for_conformance_testing  = require("lib/simulation/address_space_for_conformance_testing");
  var build_address_space_for_conformance_testing = address_space_for_conformance_testing.build_address_space_for_conformance_testing;
  
  function sameVariant(v1,v2) {
      if (v1.dataType != v2.dataType) {
          return false;
      }
      if (v1.arrayType != v2.arrayType) {
          return false;
      }
      if (v1.value !== v2.value) {
          return false;
      }
      return true;
  }
  
  function sameDate(d1,d2) {
      if (!d1) { return !d2;}
      if (!d2) { return !d1;}
      return d1.getTime()=== d2.getTime();
  }
  
  function sameDataValue(dv1,dv2) {
  
      if (dv1.statusCode!==dv2.statusCode) {
          return false;
      }
  
      if (!sameVariant(dv1.statusCode,dv2.statusCode)) {
          return false;
      }
      return true;
  }
  describe("end-to-end testing of read and write operation on a Variable",function() {
      var server, client, temperatureVariableId, endpointUrl;
  
      var port = 2555;
  
      before(function (done) {
          server = build_server_with_temperature_device({port: port}, function (err) {
  
              build_address_space_for_conformance_testing(server.engine, {mass_variables: false});
  
              endpointUrl = server.endpoints[0].endpointDescriptions()[0].endpointUrl;
              temperatureVariableId = server.temperatureVariableId;
              done(err);
          });
      });
  
      beforeEach(function (done) {
          client = new OPCUAClient();
          done();
      });
  
      afterEach(function (done) {
          client = null;
          done();
      });
  
      after(function (done) {
          server.shutdown(done);
      });
  
      var namespaceIndex = 411;
  
  
      function test_write_read_cycle(client,dataValue,done) {
  
          perform_operation_on_client_session(client, endpointUrl, function (session, inner_done) {
  
              var nodeId = makeNodeId("Scalar_Static_Float", namespaceIndex);
  
              var nodesToWrite = [
                  {
                      nodeId: nodeId,
                      attributeId: opcua.AttributeIds.Value,
                      indexRange: null,
                      value: dataValue
                  }
              ];
              session.write(nodesToWrite,function(err,results){
  
                  if (err) {
                      return inner_done(err);
                  }
                  results.length.should.eql(1);
                  results[0].should.eql(opcua.StatusCodes.Good);
  
                  var nodesToRead = [
                      {
                          nodeId: nodeId,
                          attributeId: opcua.AttributeIds.Value,
                          indexRange: null,
                          dataEncoding: null
                      }
                  ];
                  session.read(nodesToRead,function(err,r,results) {
                      console.log(results[0].toString());
  
                      // verify that value and status codes are identical
                      if  (!sameDataValue(dataValue,results[0])) {
                          console.log(" ------- > expected".yellow);
                          console.log(dataValue.toString().yellow);
                          console.log(" ------- > actuel".cyan);
                          console.log(results[0].toString().cyan);
                          // dataValue.toString().split("\n").should.eql(results[0].toString().split("\n"));
                          return inner_done(new Error("dataValue is not as expected"));
                      }
                      // verify that server provides a valid serverTimestamp and sourceTimestamp, regardless
                      // of what we wrote into the variable
                      results[0].serverTimestamp.should.be.instanceOf(Date);
                      results[0].sourceTimestamp.should.be.instanceOf(Date);
                      inner_done(err);
                  });
              });
  
          },done);
  
      }
  
      it("writing dataValue case 1",function(done) {
  
          var dataValue = new opcua.DataValue({
              serverTimestamp: new Date(2015,5,2),
              serverPicoseconds: 20,
              sourceTimestamp: new Date(2015,5,3),
              sourcePicoseconds: 30,
              value: {
                  dataType: opcua.DataType.Float,
                  value: 32.0
              }
          });
          test_write_read_cycle(client,dataValue,done);
  
      });
      it("writing dataValue case 2",function(done) {
  
          var dataValue = new opcua.DataValue({
              serverTimestamp: null,
              serverPicoseconds: 0,
              sourceTimestamp: new Date(2015,5,3),
              sourcePicoseconds: 30,
              value: {
                  dataType: opcua.DataType.Float,
                  value: 32.0
              }
          });
          test_write_read_cycle(client,dataValue,done);
  
      });
      it("writing dataValue case 3",function(done) {
  
          var dataValue = new opcua.DataValue({
              serverTimestamp: null,
              serverPicoseconds: 0,
              sourceTimestamp: null,
              sourcePicoseconds: 0,
              value: {
                  dataType: opcua.DataType.Float,
                  value: 32.0
              }
          });
          test_write_read_cycle(client,dataValue,done);
  
      });
  
      it("ZZZ reading ns=411;s=Scalar_Static_Int16 ",function(done){
          perform_operation_on_client_session(client, endpointUrl, function (session, inner_done) {
              var nodeId = makeNodeId("Scalar_Static_Int16", namespaceIndex);
  
              var nodesToRead = [
                  {
                      nodeId: nodeId,
                      attributeId: opcua.AttributeIds.Value,
                      indexRange: null,
                      dataEncoding: null
                  }
              ];
  
              var maxAge = 10;
  
              async.series([
                  function (callback) {
                      var request = new opcua.read_service.ReadRequest({
                          nodesToRead: nodesToRead,
                          maxAge: maxAge,
                          timestampsToReturn: opcua.read_service.TimestampsToReturn.Both
                      });
  
                      session.performMessageTransaction(request, function (err, response) {
                          console.log(response.results[0].toString());
                          callback(err);
                      });
  
                  },
                  function (callback) {
                      var request = new opcua.read_service.ReadRequest({
                          nodesToRead: nodesToRead,
                          maxAge: maxAge,
                          timestampsToReturn: opcua.read_service.TimestampsToReturn.Both
                      });
  
                      session.performMessageTransaction(request, function (err, response) {
                          console.log(response.results[0].toString());
                          callback(err);
                      });
  
                  },
                  function (callback) {
  
                      var request = new opcua.read_service.ReadRequest({
                          nodesToRead: nodesToRead,
                          maxAge: maxAge,
                          timestampsToReturn: opcua.read_service.TimestampsToReturn.Server
                      });
  
                      session.performMessageTransaction(request, function (err, response) {
                          console.log(response.results[0].toString());
                          callback(err);
                      });
                  }
              ], inner_done);
          },done);
      });
  
      xit("#read test maxAge",function(done) {
          done();
      });
  
      describe("Performance of reading large array",function() {
  
          it("PERF - READ testing performance of large array",function(done) {
  
              perform_operation_on_client_session(client, endpointUrl, function (session, inner_done) {
  
                  var nodeId = makeNodeId("Scalar_Static_Large_Array_Float", namespaceIndex);
  
                  var nodesToRead = [
                      {
                          nodeId: nodeId,
                          attributeId: opcua.AttributeIds.Value,
                          indexRange: null,
                          dataEncoding: null
                      }
                  ];
                  session.read(nodesToRead,function(err,r,results) {
                      console.log(results[0].toString());
  
                      inner_done(err);
                  });
  
  
              },done);
          });
          it("PERF - WRITE testing performance of large array",function(done) {
  
              perform_operation_on_client_session(client, endpointUrl, function (session, inner_done) {
  
                  var nodeId = makeNodeId("Scalar_Static_Large_Array_Float", namespaceIndex);
                  var nodesToRead = [
                      {
                          nodeId: nodeId,
                          attributeId: opcua.AttributeIds.Value,
                          indexRange: null,
                          dataEncoding: null
                      }
                  ];
                  session.read(nodesToRead,function(err,r,results) {
                      console.log(results[0].toString());
  
                      var variant = results[0].value;
                      variant.value[1] = 2;
                      variant.value[3] = 2;
                      variant.value[4] = 2;
                      console.log(results[0].toString());
                      var nodesToWrite = [
                          {
                              nodeId: nodeId,
                              attributeId: opcua.AttributeIds.Value,
                              indexRange: null,
                              value: results[0]
                          }
                      ];
                      session.write(nodesToWrite,function(err) {
  
                          console.log(nodesToWrite[0].value.value.value.constructor.name);
  
                          assert(nodesToWrite[0].value.value.value instanceof Float32Array);
                          nodesToWrite[0].value.value.value = new Float32Array(1024*1024);
                          session.write(nodesToWrite,function(err) {
                              session.read(nodesToRead,function(err,r,results) {
                                  console.log(results[0].toString());
                                  inner_done(err);
                              });
                          });
                      });
  
                  });
              },done);
          });
      });
  });