text: /**
   * Copyright JS Foundation and other contributors, http://js.foundation
   *
   * Licensed 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.
   **/
  
  var should = require("should");
  
  var changeNode = require("../../../../nodes/core/logic/15-change.js");
  var helper = require("../../helper.js");
  
  describe('change Node', function() {
  
      beforeEach(function(done) {
          helper.startServer(done);
      });
  
      afterEach(function(done) {
          helper.unload();
          helper.stopServer(done);
      });
  
      it('should load node with defaults', function(done) {
          var flow = [{ id: "c1", type: "change", name:"change1" }];
          helper.load(changeNode, flow, function() {
              helper.getNode("c1").should.have.property("name", "change1");
              helper.getNode("c1").should.have.property("rules", [{fromt:'str',pt:'msg',tot:'str',t:undefined,p:''}]);
              done();
          });
      });
      it('should load defaults if set to replace', function(done) {
          var flow = [{ id: "c1", type: "change", name:"change1", action:"replace" }];
          helper.load(changeNode, flow, function() {
              helper.getNode("c1").should.have.property("name", "change1");
              helper.getNode("c1").should.have.property("rules", [ {fromt: 'str', p: '', pt: 'msg', t: 'set', to: '', tot: 'str'} ]);
              done();
          });
      });
      it('should load defaults if set to change', function(done) {
          var flow = [{ id: "c1", type: "change", name:"change1", action:"change" }];
          helper.load(changeNode, flow, function() {
              //console.log(helper.getNode("c1"));
              helper.getNode("c1").should.have.property("name", "change1");
              helper.getNode("c1").should.have.property("rules", [ { from: '', fromRE:/(?:)/g,fromt: 'str', p: '',pt: 'msg', re: undefined, t: 'change', to: '',tot: 'str' } ]);
              done();
          });
      });
  
      describe('#set' , function() {
  
          it('sets the value of the message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"payload","from":"","to":"changed","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("changed");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"changeMe"});
              });
          });
  
          it('sets the value of global context property', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{ "t":"set","p":"globalValue","pt":"global","to":"changed","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          changeNode1.context().global.get("globalValue").should.equal("changed");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().global.set("globalValue","changeMe");
                  changeNode1.receive({payload:""});
              });
          });
  
          it('sets the value and type of the message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{ "t": "set", "p": "payload", "pt": "msg", "to": "12345", "tot": "num" }],"reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal(12345);
                          var t = typeof(msg.payload);
                          t.should.equal("number");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"changeMe"});
              });
          });
  
          it('sets the value of an already set multi-level message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"foo.bar","from":"","to":"bar","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.foo.bar.should.equal("bar");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({foo:{bar:"foo"}});
              });
          });
  
          it('sets the value of an empty multi-level message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"foo.bar","from":"","to":"bar","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.foo.bar.should.equal("bar");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({});
              });
          });
  
          it('sets the value of a message property to another message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"foo","from":"","to":"msg.fred","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  var rule = helper.getNode("changeNode1").rules[0];
                  rule.t.should.eql('set');
                  rule.tot.should.eql('msg');
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.foo.should.equal("bar");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({fred:"bar"});
              });
          });
  
          it('sets the value of a multi-level message property to another multi-level message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"foo.bar","from":"","to":"msg.fred.red","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.foo.bar.should.equal("bar");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({fred:{red:"bar"}});
              });
          });
  
          it('doesn\'t set the value of a message property when the \'to\' message property does not exist', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"foo.bar","from":"","to":"msg.fred.red","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          should.not.exist(msg.foo);
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({});
              });
          });
  
          it('overrides the value of a message property when the \'to\' message property does not exist', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"payload","from":"","to":"msg.foo","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          should.not.exist(msg.payload);
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"Hello"});
              });
          });
  
          it('sets the message property to null when the \'to\' message property equals null', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"payload","from":"","to":"msg.foo","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          (msg.payload === null).should.be.true();
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"Hello", foo:null});
              });
          });
  
          it('does not set other properties using = inside to property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"payload","from":"","to":"msg.otherProp=10","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
              {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          should.not.exist(msg.payload);
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"changeMe"});
              });
          });
  
          it('splits dot delimited properties into objects', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"pay.load","from":"","to":"10","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.pay.load.should.equal("10");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({pay:{load:"changeMe"}});
              });
          });
  
          it('changes the value to flow context property', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"set","p":"payload","to":"flowValue","tot":"flow"}],"name":"changeNode","wires":[["helperNode1"]],"z":"flow"},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.eql("Hello World!");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().flow.set("flowValue","Hello World!");
                  changeNode1.receive({payload:""});
              });
          });
  
          it('changes the value to global context property', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"set","p":"payload","to":"globalValue","tot":"global"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.eql("Hello World!");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().global.set("globalValue","Hello World!");
                  changeNode1.receive({payload:""});
              });
          });
  
          it('changes the value to a number', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"set","p":"payload","to":"123","tot":"num"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.eql(123);
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:""});
              });
          });
  
          it('changes the value to a boolean value', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"set","p":"payload","to":"true","tot":"bool"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.eql(true);
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:""});
              });
          });
  
          it('changes the value to a js object', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"set","p":"payload","to":'{"a":123}',"tot":"json"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.eql({a:123});
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:""});
              });
          });
  
          it('changes the value to a buffer object', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"set","p":"payload","to":"[72,101,108,108,111,32,87,111,114,108,100]","tot":"bin"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          var buff = Buffer.from("Hello World");
                          msg.payload.should.eql(buff);
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:""});
              });
          });
   
          it('sets the value of the message property to the current timestamp', function(done) {
              var flow = [{"id":"changeNode1","type":"change","rules":[{"t":"set","p":"ts","pt":"msg","to":"","tot":"date"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          (Date.now() - msg.ts).should.be.approximately(0,50);
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:Date.now()});
              });
          });
  
          it('changes the value using jsonata', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"set","p":"payload","to":"$length(payload)","tot":"jsonata"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.eql(12);
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"Hello World!"});
              });
          });
  
      });
      describe('#change', function() {
          it('changes the value of the message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"change","property":"payload","from":"Hello","to":"Goodbye","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("Goodbye World!");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"Hello World!"});
              });
          });
  
          it('changes the value and doesnt change type of the message property for partial match', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{ "t": "change", "p": "payload", "pt": "msg", "from": "123", "fromt": "str", "to": "456", "tot": "num" }],"reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("Change456Me");
                          var t = typeof(msg.payload);
                          t.should.equal("string");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"Change123Me"});
              });
          });
  
          it('changes the value and type of the message property if a complete match', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{ "t": "change", "p": "payload", "pt": "msg", "from": "123", "fromt": "str", "to": "456", "tot": "num" }],"reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal(456);
                          var t = typeof(msg.payload);
                          t.should.equal("number");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"123"});
              });
          });
  
          it('changes the value of a multi-level message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"change","property":"foo.bar","from":"Hello","to":"Goodbye","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.foo.bar.should.equal("Goodbye World!");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({foo:{bar:"Hello World!"}});
              });
          });
  
          it('sends unaltered message if the changed message property does not exist', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"change","property":"foo","from":"Hello","to":"Goodbye","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("Hello World!");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"Hello World!"});
              });
          });
  
          it('sends unaltered message if a changed multi-level message property does not exist', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"change","property":"foo.bar","from":"Hello","to":"Goodbye","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("Hello World!");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"Hello World!"});
              });
          });
  
          it('changes the value of the message property based on a regex', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"change","property":"payload","from":"\\d+","to":"NUMBER","reg":true,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("Replace all numbers NUMBER and NUMBER");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"Replace all numbers 12 and 14"});
              });
          });
  
          it('supports regex groups', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"change","property":"payload","from":"(Hello)","to":"$1-$1-$1","reg":true,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("Hello-Hello-Hello World");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"Hello World"});
              });
          });
  
          it('reports invalid regex', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"change","property":"payload","from":"\\+**+","to":"NUMBER","reg":true,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var logEvents = helper.log().args.filter(function (evt) {
                      return evt[0].type == "change";
                  });
                  logEvents.should.have.length(1);
                  var msg = logEvents[0][0];
                  msg.should.have.property('level', helper.log().ERROR);
                  msg.should.have.property('id', 'changeNode1');
                  done();
  
              });
          });
  
          it('supports regex groups - new rule format', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"change","p":"payload","from":"(Hello)","to":"$1-$1-$1","fromt":"re","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("Hello-Hello-Hello World");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"Hello World"});
              });
          });
  
          it('changes the value - new rule format', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"change","p":"payload","from":"ABC","to":"123","fromt":"str","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("abc123abc");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"abcABCabc"});
              });
          });
  
          it('changes the value using msg property', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"change","p":"payload","from":"topic","to":"123","fromt":"msg","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("abc123abc");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"abcABCabc",topic:"ABC"});
              });
          });
  
          it('changes the value using flow context property', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"change","p":"payload","from":"topic","to":"123","fromt":"flow","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]],"z":"flow"},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("abc123abc");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().flow.set("topic","ABC");
                  changeNode1.receive({payload:"abcABCabc"});
              });
          });
  
          it('changes the value using global context property', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"change","p":"payload","from":"topic","to":"123","fromt":"global","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("abc123abc");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().global.set("topic","ABC");
                  changeNode1.receive({payload:"abcABCabc"});
              });
          });
  
          it('changes the number using global context property', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"change","p":"payload","from":"topic","to":"ABC","fromt":"global","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("ABC");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().global.set("topic",123);
                  changeNode1.receive({payload:123});
              });
          });
  
          it('changes the value using number - string payload', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"change","p":"payload","from":"123","to":"456","fromt":"num","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("456");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"123"});
              });
          });
  
          it('changes the value using number - number payload', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"change","p":"payload","from":"123","to":"abc","fromt":"num","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("abc");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:123});
              });
          });
  
          it('changes the value using boolean - string payload', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"change","p":"payload","from":"true","to":"xxx","fromt":"bool","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("xxx");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"true"});
              });
          });
  
          it('changes the value using boolean - boolean payload', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"change","p":"payload","from":"true","to":"xxx","fromt":"bool","tot":"str"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("xxx");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:true});
              });
          });
  
          it('changes the value of the global context', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{ "t": "change", "p": "payload", "pt": "global", "from": "Hello", "fromt": "str", "to": "Goodbye", "tot": "str" }],"reg":false,"name":"changeNode","wires":[["helperNode1"]],"z":"flow"},
                          {id:"helperNode1", type:"helper", wires:[],"z":"flow"}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          helperNode1.context().global.get("payload").should.equal("Goodbye World!");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().global.set("payload","Hello World!");
                  changeNode1.receive({payload:""});
              });
          });
  
          it('changes the value and doesnt change type of the flow context for partial match', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{ "t": "change", "p": "payload", "pt": "flow", "from": "123", "fromt": "str", "to": "456", "tot": "num" }],"reg":false,"name":"changeNode","wires":[["helperNode1"]],"z":"flow"},
                          {id:"helperNode1", type:"helper", wires:[],"z":"flow"}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          helperNode1.context().flow.get("payload").should.equal("Change456Me");
                          helperNode1.context().flow.get("payload").should.be.a.String();
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().flow.set("payload","Change123Me");
                  changeNode1.receive({payload:""});
              });
          });
  
          it('changes the value and type of the flow context if a complete match', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{ "t": "change", "p": "payload", "pt": "flow", "from": "123", "fromt": "str", "to": "456", "tot": "num" }],"reg":false,"name":"changeNode","wires":[["helperNode1"]],"z":"flow"},
                          {id:"helperNode1", type:"helper", wires:[],"z":"flow"}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          helperNode1.context().flow.get("payload").should.equal(456);
                          helperNode1.context().flow.get("payload").should.be.a.Number();
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().flow.set("payload","123");
                  changeNode1.receive({payload:""});
              });
          });
  
          it('changes the value using number - number flow context', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{ "t": "change", "p": "payload", "pt": "flow", "from": "123", "fromt": "num", "to": "abc", "tot": "str" }],"reg":false,"name":"changeNode","wires":[["helperNode1"]],"z":"flow"},
                          {id:"helperNode1", type:"helper", wires:[],"z":"flow"}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          helperNode1.context().flow.get("payload").should.equal("abc");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().flow.set("payload",123);
                  changeNode1.receive({payload:""});
              });
          });
  
          it('changes the value using boolean - boolean flow context', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{ "t": "change", "p": "payload", "pt": "flow", "from": "true", "fromt": "bool", "to": "abc", "tot": "str" }],"reg":false,"name":"changeNode","wires":[["helperNode1"]],"z":"flow"},
                          {id:"helperNode1", type:"helper", wires:[],"z":"flow"}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          helperNode1.context().flow.get("payload").should.equal("abc");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().flow.set("payload",true);
                  changeNode1.receive({payload:""});
              });
          });
      });
  
      describe("#delete", function() {
          it('deletes the value of the message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"delete","property":"payload","from":"","to":"","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.should.not.have.property('payload');
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"This won't get through!"});
              });
          });
  
          it('deletes the value of global context property', function(done) {
              var flow = [{"id":"changeNode1","type":"change",rules:[{ "t": "delete", "p": "globalValue", "pt": "global"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          changeNode1.context().global.should.not.have.property("globalValue");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.context().global.set("globalValue","Hello World!");
                  changeNode1.receive({payload:""});
              });
          });
  
          it('deletes the value of a multi-level message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"delete","property":"foo.bar","from":"","to":"","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.should.not.have.property('foo.bar');
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"This won't get through!", foo:{bar:"This will be deleted!"}});
              });
          });
  
          it('sends unaltered message if the deleted message property does not exist', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"delete","property":"foo","from":"","to":"","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.should.not.have.property('foo');
                          msg.payload.should.equal('payload');
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"payload"});
              });
          });
  
          it('sends unaltered message if a deleted multi-level message property does not exist', function(done) {
              var flow = [{"id":"changeNode1","type":"change","action":"delete","property":"foo.bar","from":"","to":"","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.should.not.have.property('foo.bar');
                          msg.payload.should.equal('payload');
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"payload"});
              });
          });
      });
  
      describe("#move", function() {
          it('moves the value of the message property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","rules":[{"t":"move","p":"topic","pt":"msg","to":"payload","tot":"msg"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.should.not.have.property('topic');
                          msg.should.have.property('payload');
                          msg.payload.should.equal("You've got to move it move it.");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({topic:"You've got to move it move it.", payload:{foo:"bar"}});
              });
          });
          it('moves the value of a message property object', function(done) {
              var flow = [{"id":"changeNode1","type":"change","rules":[{"t":"move","p":"topic","pt":"msg","to":"payload","tot":"msg"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.should.not.have.property('topic');
                          msg.should.have.property('payload');
                          msg.payload.should.have.property('foo');
                          msg.payload.foo.should.have.property('bar');
                          msg.payload.foo.bar.should.equal(1);
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({topic:{foo:{bar:1}}, payload:"String"});
              });
          });
          it('moves the value of a message property object to a sub-property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","rules":[{"t":"move","p":"payload","pt":"msg","to":"payload.foo","tot":"msg"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.should.have.property('payload');
                          msg.payload.should.have.property('foo');
                          msg.payload.foo.should.equal("bar");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:"bar"});
              });
          });
          it('moves the value of a message sub-property object to a property', function(done) {
              var flow = [{"id":"changeNode1","type":"change","rules":[{"t":"move","p":"payload.foo","pt":"msg","to":"payload","tot":"msg"}],"name":"changeNode","wires":[["helperNode1"]]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.should.have.property('payload');
                          msg.payload.should.equal("bar");
                          (typeof msg.payload).should.equal("string");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({payload:{foo:"bar"}});
              });
          });
      });
  
      describe('- multiple rules', function() {
          it('handles multiple rules', function(done) {
              var flow = [{"id":"changeNode1","type":"change","wires":[["helperNode1"]],
                          rules:[
                              {t:"set",p:"payload",to:"newValue"},
                              {t:"change",p:"changeProperty",from:"this",to:"that"},
                              {t:"delete",p:"deleteProperty"}
                          ]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("newValue");
                          msg.changeProperty.should.equal("change that value");
                          should.not.exist(msg.deleteProperty);
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({
                      payload:"changeMe",
                      changeProperty:"change this value",
                      deleteProperty:"delete this value"
                  });
              });
          });
          it('applies multiple rules in order', function(done) {
              var flow = [{"id":"changeNode1","type":"change","wires":[["helperNode1"]],
                          rules:[
                              {t:"set",p:"payload",to:"a this (hi)"},
                              {t:"change",p:"payload",from:"this",to:"that"},
                              {t:"change",p:"payload",from:"\\(.*\\)",to:"[new]",re:true},
                          ]},
                          {id:"helperNode1", type:"helper", wires:[]}];
              helper.load(changeNode, flow, function() {
                  var changeNode1 = helper.getNode("changeNode1");
                  var helperNode1 = helper.getNode("helperNode1");
                  helperNode1.on("input", function(msg) {
                      try {
                          msg.payload.should.equal("a that [new]");
                          done();
                      } catch(err) {
                          done(err);
                      }
                  });
                  changeNode1.receive({
                      payload:"changeMe"
                  });
              });
          });
      });
  });
  