3 tests added to check the wip in machines

dream/simulation/JSONInputs/WipInMachine1.json

+{
+    "_class": "Dream.Simulation",
+    "edges": {
+        "0": [
+            "M1",
+            "E1",
+            {}
+        ]
+    },
+    "general": {
+        "_class": "Dream.Configuration",
+        "confidenceLevel": "0.95",
+        "maxSimTime": "-1",
+        "numberOfReplications": "1",
+        "trace": "Yes"
+    },
+    "nodes": {
+        "E1": {
+            "_class": "Dream.Exit",
+            "left": 0.5,
+            "name": "Stock",
+            "top": 0.10215053763440862
+        },
+        "M1": {
+            "_class": "Dream.Machine",
+            "failures": {
+                "failureDistribution": "No"
+            },
+            "left": 0.5,
+            "name": "Moulding",
+            "processingTime": {
+                "distributionType": "Fixed",
+                "mean": 5
+            },
+            "wip": [
+                {
+                    "_class": "Dream.Part",
+                    "id": "P1",
+                    "name": "Part1"
+                }
+            ],
+            "top": 0.5
+        }
+    }
+}
\ No newline at end of file

dream/simulation/JSONInputs/WipInMachine2.json

+{
+    "_class": "Dream.Simulation",
+    "edges": {
+        "0": [
+            "M1",
+            "E1",
+            {}
+        ]
+    },
+    "general": {
+        "_class": "Dream.Configuration",
+        "confidenceLevel": "0.95",
+        "maxSimTime": "-1",
+        "numberOfReplications": "1",
+        "trace": "Yes"
+    },
+    "nodes": {
+        "E1": {
+            "_class": "Dream.Exit",
+            "left": 0.5,
+            "name": "Stock",
+            "top": 0.10215053763440862
+        },
+        "M1": {
+            "_class": "Dream.Machine",
+            "failures": {
+                "failureDistribution": "No"
+            },
+            "left": 0.5,
+            "name": "Moulding",
+            "processingTime": {
+                "distributionType": "Fixed",
+                "mean": 5
+            },
+            "wip": [
+                {
+                    "_class": "Dream.Part",
+                    "id": "P1",
+                    "name": "Part1",
+					"remainingProcessingTime":{
+						"distributionType": "Fixed",
+						"mean": 2					
+					}
+                }
+            ],
+            "top": 0.5
+        }
+    }
+}
\ No newline at end of file

dream/simulation/JSONInputs/WipInMachine3.json

+{
+    "_class": "Dream.Simulation",
+    "edges": {
+        "0": [
+            "Q1",
+            "M1",
+            {}
+        ],
+        "1": [
+            "M1",
+            "E1",
+            {}
+        ]
+    },
+    "general": {
+        "_class": "Dream.Configuration",
+        "confidenceLevel": "0.95",
+        "maxSimTime": "-1",
+        "numberOfReplications": "1",
+        "trace": "Yes"
+    },
+    "nodes": {
+        "E1": {
+            "_class": "Dream.Exit",
+            "left": 0.5,
+            "name": "Stock",
+            "top": 0.10215053763440862
+        },
+        "Q1": {
+            "_class": "Dream.Queue",
+            "capacity": 1,
+            "left": 0.4414893617021277,
+            "name": "Q1",
+            "top": 0.40909090909090906,
+            "wip": [
+                {
+                    "_class": "Dream.Part",
+                    "id": "P2",
+                    "name": "Part2"
+                }
+            ]
+        },
+        "M1": {
+            "_class": "Dream.Machine",
+            "failures": {
+                "failureDistribution": "No"
+            },
+            "left": 0.5,
+            "name": "Moulding",
+            "processingTime": {
+                "distributionType": "Fixed",
+                "mean": 5
+            },
+            "wip": [
+                {
+                    "_class": "Dream.Part",
+                    "id": "P1",
+                    "name": "Part1",
+                    "remainingProcessingTime": {
+                        "distributionType": "Fixed",
+                        "mean": 2
+                    }
+                }
+            ],
+            "top": 0.5
+        }
+    }
+}
\ No newline at end of file

dream/tests/dump/WipInMachine1.json.result

+{
+ "_class": "Dream.Simulation", 
+ "elementList": [
+  {
+   "_class": "Dream.Exit", 
+   "id": "E1", 
+   "results": {
+    "lifespan": 5.0, 
+    "takt_time": 5.0, 
+    "throughput": 1
+   }
+  }, 
+  {
+   "_class": "Dream.Machine", 
+   "id": "M1", 
+   "results": {
+    "blockage_ratio": 0.0, 
+    "failure_ratio": 0.0, 
+    "waiting_ratio": 0.0, 
+    "working_ratio": 100.0
+   }
+  }
+ ], 
+ "general": {
+  "_class": "Dream.Configuration"
+ }
+}
\ No newline at end of file

dream/tests/dump/WipInMachine2.json.result

+{
+ "_class": "Dream.Simulation", 
+ "elementList": [
+  {
+   "_class": "Dream.Exit", 
+   "id": "E1", 
+   "results": {
+    "lifespan": 2.0, 
+    "takt_time": 2.0, 
+    "throughput": 1
+   }
+  }, 
+  {
+   "_class": "Dream.Machine", 
+   "id": "M1", 
+   "results": {
+    "blockage_ratio": 0.0, 
+    "failure_ratio": 0.0, 
+    "waiting_ratio": 0.0, 
+    "working_ratio": 100.0
+   }
+  }
+ ], 
+ "general": {
+  "_class": "Dream.Configuration"
+ }
+}
\ No newline at end of file

dream/tests/dump/WipInMachine3.json.result

+{
+ "_class": "Dream.Simulation", 
+ "elementList": [
+  {
+   "_class": "Dream.Exit", 
+   "id": "E1", 
+   "results": {
+    "lifespan": 4.5, 
+    "takt_time": 3.5, 
+    "throughput": 2
+   }
+  }, 
+  {
+   "_class": "Dream.Machine", 
+   "id": "M1", 
+   "results": {
+    "blockage_ratio": 0.0, 
+    "failure_ratio": 0.0, 
+    "waiting_ratio": 0.0, 
+    "working_ratio": 100.0
+   }
+  }, 
+  {
+   "_class": "Dream.Queue", 
+   "id": "Q1"
+  }
+ ], 
+ "general": {
+  "_class": "Dream.Configuration"
+ }
+}
\ No newline at end of file