Added check for equality of Synapse object`s permanence values to their equals() method

Author: Hopding

src/main/java/org/numenta/nupic/model/Synapse.java

@@ -239,6 +239,8 @@ public boolean equals(Object obj) {
             return false;
         if(synapseIndex != other.synapseIndex)
             return false;
+        if(permanence != other.permanence)
+            return false;
         return true;
     }
 }

src/test/java/org/numenta/nupic/model/SynapseTest.java

@@ -52,12 +52,18 @@ public void testSynapseEquality() {
         synapse1.setPresynapticCell(cell2);
         assertFalse(synapse1.equals(synapse2));
 
-        // synapse1 should not equal synapse 2 because synapse1's
+        // synapse1 should not equal synapse2 because synapse1's
         // synapseIndex != synapse2's synapseIndex
         synapse1 = new Synapse(cell1, segment1, 0, 0);
         synapse2 = new Synapse(cell1, segment1, 1, 0);
         assertFalse(synapse1.equals(synapse2));
 
+        // synapse1 should not equal synapse2 because synapse1's
+        // permanence != synapse2's permanence
+        synapse1 = new Synapse(cell1, segment1, 0, 0);
+        synapse2 = new Synapse(cell1, segment1, 0, 1);
+        assertFalse(synapse1.equals(synapse2));
+
         // synapse1 should equal synapse2 because all of their
         // relevant properties are equal
         synapse1 = new Synapse(cell1, segment1, 0, 0);