test of shift working with threshold added

dream/simulation/JSONInputs/ShiftThreshold1.json

+{
+    "_class": "Dream.Simulation",
+    "edges": {
+        "0": [
+            "S1",
+            "M1",
+            {}
+        ],
+        "1": [
+            "M1",
+            "E1",
+            {}
+        ]
+    },
+    "general": {
+        "_class": "Dream.Configuration",
+        "confidenceLevel": "0.95",
+        "maxSimTime": "20",
+        "numberOfReplications": "1",
+        "trace": "Yes"
+    },
+    "nodes": {
+        "E1": {
+            "_class": "Dream.Exit",
+            "left": 0.5,
+            "name": "Stock",
+            "top": 0.10215053763440862
+        },
+        "M1": {
+            "_class": "Dream.Machine",
+            "left": 0.5,
+            "name": "Moulding",
+            "processingTime": {
+                "distributionType": "Fixed",
+                "mean": 0.25
+            },
+            "shift": {
+                "shiftPattern": [
+                    [
+                        0,
+                        5
+                    ],
+                    [
+                        10,
+                        15
+                    ]
+                ],
+                "endUnfinished": 0,
+				"receiveBeforeEndThreshold": 2
+            },
+            "top": 0.5
+        },
+        "S1": {
+            "_class": "Dream.Source",
+            "entity": "Dream.Part",
+            "interarrivalTime": {
+                "distributionType": "Fixed",
+                "mean": 0.5
+            },
+            "left": 0.5,
+            "name": "Raw Material",
+            "top": 0.8978494623655914
+        }
+    }
+}
\ No newline at end of file

dream/tests/dump/ShiftThreshold1.json.result

+{
+ "_class": "Dream.Simulation", 
+ "elementList": [
+  {
+   "_class": "Dream.Exit", 
+   "id": "E1", 
+   "results": {
+    "lifespan": 4.0, 
+    "takt_time": 0.7222222222222222, 
+    "throughput": 18
+   }
+  }, 
+  {
+   "_class": "Dream.Machine", 
+   "id": "M1", 
+   "results": {
+    "blockage_ratio": 0.0, 
+    "failure_ratio": 0.0, 
+    "off_shift_ratio": 50.0, 
+    "waiting_ratio": 27.5, 
+    "working_ratio": 22.5
+   }
+  }
+ ], 
+ "general": {
+  "_class": "Dream.Configuration"
+ }
+}
\ No newline at end of file