two tests added

dream/simulation/JSONInputs/OperatorShift2.json

+{
+    "_class": "Dream.Simulation",
+    "edges": {
+        "0": [
+            "O1",
+            "M1",
+            {}
+        ],
+        "1": [
+            "O1",
+            "M2",
+            {}
+        ],
+        "2": [
+            "S1",
+            "M1",
+            {}
+        ],
+        "3": [
+            "M1",
+            "E1",
+            {}
+        ]
+    },
+    "general": {
+        "_class": "Dream.Configuration",
+        "confidenceLevel": "0.95",
+        "maxSimTime": "20",
+        "numberOfReplications": "1",
+        "trace": "Yes",
+		"console": "No"
+    },
+    "nodes": {
+        "E1": {
+            "_class": "Dream.Exit",
+            "left": 0.7083333333333333,
+            "top": 0.05688622754491013
+        },
+        "M1": {
+            "_class": "Dream.Machine",
+            "left": 0.5625,
+            "name": "Machine1",
+            "operationType": "Processing",
+            "processingTime": {
+                "distributionType": "Fixed",
+                "mean": 3.0
+            },
+            "top": 0.5
+        },
+        "O1": {
+            "_class": "Dream.Operator",
+            "capacity": 1,
+            "left": 0.8489583333333334,
+            "name": "Operator1",
+            "top": 0.721556886227545,
+            "shift": {
+                "shiftPattern": [
+                    [
+                        0,
+                        5
+                    ],
+                    [
+                        10,
+                        15
+                    ]
+                ],
+                "endUnfinished": 1
+            }
+        },
+        "S1": {
+            "_class": "Dream.Source",
+            "entity": "Dream.Part",
+            "interarrivalTime": {
+                "distributionType": "Fixed",
+                "mean": 6
+            },
+            "left": 0.30208333333333337,
+            "name": "Source",
+            "top": 0.9431137724550899
+        }
+    }
+}
\ No newline at end of file

dream/simulation/JSONInputs/OperatorShift3.json

+{
+    "_class": "Dream.Simulation",
+    "edges": {
+        "0": [
+            "O1",
+            "M1",
+            {}
+        ],
+        "1": [
+            "O1",
+            "M2",
+            {}
+        ],
+        "2": [
+            "S1",
+            "M1",
+            {}
+        ],
+        "3": [
+            "M1",
+            "E1",
+            {}
+        ]
+    },
+    "general": {
+        "_class": "Dream.Configuration",
+        "confidenceLevel": "0.95",
+        "maxSimTime": "5",
+        "numberOfReplications": "1",
+        "trace": "Yes",
+		"console": "No"
+    },
+    "nodes": {
+        "E1": {
+            "_class": "Dream.Exit",
+            "left": 0.7083333333333333,
+            "top": 0.05688622754491013
+        },
+        "M1": {
+            "_class": "Dream.Machine",
+            "left": 0.5625,
+            "name": "Machine1",
+            "operationType": "Processing",
+            "processingTime": {
+                "distributionType": "Fixed",
+                "mean": 3.0
+            },
+            "top": 0.5
+        },
+        "O1": {
+            "_class": "Dream.Operator",
+            "capacity": 1,
+            "left": 0.8489583333333334,
+            "name": "Operator1",
+            "top": 0.721556886227545,
+            "shift": {
+                "shiftPattern": [
+                    [
+                        0,
+                        4
+                    ]
+                ],
+                "endUnfinished": 1
+            }
+        },
+        "S1": {
+            "_class": "Dream.Source",
+            "entity": "Dream.Part",
+            "interarrivalTime": {
+                "distributionType": "Fixed",
+                "mean": 2
+            },
+            "left": 0.30208333333333337,
+            "name": "Source",
+            "top": 0.9431137724550899
+        }
+    }
+}
\ No newline at end of file

dream/tests/dump/OperatorShift2.json.result

+{
+ "_class": "Dream.Simulation", 
+ "elementList": [
+  {
+   "_class": "Dream.Exit", 
+   "id": "E1", 
+   "results": {
+    "lifespan": 4.666666666666667, 
+    "takt_time": 5.333333333333333, 
+    "throughput": 3
+   }
+  }, 
+  {
+   "_class": "Dream.Machine", 
+   "id": "M1", 
+   "results": {
+    "blockage_ratio": 0.0, 
+    "failure_ratio": 0.0, 
+    "waiting_ratio": 55.0, 
+    "working_ratio": 45.0
+   }
+  }, 
+  {
+   "_class": "Dream.Operator", 
+   "id": "O1", 
+   "results": {
+    "off_shift_ratio": 45.0, 
+    "waiting_ratio": 10.0, 
+    "working_ratio": 45.0
+   }
+  }
+ ], 
+ "general": {
+  "_class": "Dream.Configuration"
+ }
+}
\ No newline at end of file

dream/tests/dump/OperatorShift3.json.result

+{
+ "_class": "Dream.Simulation", 
+ "elementList": [
+  {
+   "_class": "Dream.Exit", 
+   "id": "E1", 
+   "results": {
+    "lifespan": 3.0, 
+    "takt_time": 3.0, 
+    "throughput": 1
+   }
+  }, 
+  {
+   "_class": "Dream.Machine", 
+   "id": "M1", 
+   "results": {
+    "blockage_ratio": 0.0, 
+    "failure_ratio": 0.0, 
+    "waiting_ratio": 0.0, 
+    "working_ratio": 100.0
+   }
+  }, 
+  {
+   "_class": "Dream.Operator", 
+   "id": "O1", 
+   "results": {
+    "waiting_ratio": 0.0, 
+    "working_ratio": 100.0
+   }
+  }
+ ], 
+ "general": {
+  "_class": "Dream.Configuration"
+ }
+}
\ No newline at end of file