Define ToString methods on the main models

MultiversalDiplomacy/Model/Location.cs

@@ -41,6 +41,13 @@ public class Location
         this.AdjacentList = new List<Location>();
     }
 
+    public override string ToString()
+    {
+        return this.Name == null
+            ? $"{this.Province.Name} ({this.Type})"
+            : $"{this.Province.Name} ({this.Type}:{this.Name}]";
+    }
+
     /// <summary>
     /// Set another location as bordering this location.
     /// </summary>

MultiversalDiplomacy/Model/Power.cs

@@ -14,4 +14,9 @@ public class Power
     {
         this.Name = name;
     }
+
+    public override string ToString()
+    {
+        return this.Name;
+    }
 }

MultiversalDiplomacy/Model/Province.cs

@@ -40,6 +40,11 @@ public class Province
         this.LocationList = new List<Location>();
     }
 
+    public override string ToString()
+    {
+        return this.Name;
+    }
+
     /// <summary>
     /// Create a new province with no supply center.
     /// </summary>

MultiversalDiplomacy/Model/Season.cs

@@ -64,6 +64,11 @@ public class Season
         }
     }
 
+    public override string ToString()
+    {
+        return $"{this.Turn}:{this.Timeline}";
+    }
+
     /// <summary>
     /// Create a root season at the beginning of time.
     /// </summary>

MultiversalDiplomacy/Model/Unit.cs

@@ -39,6 +39,11 @@ public class Unit
         this.Type = type;
     }
 
+    public override string ToString()
+    {
+        return $"{this.Power} {this.Type} {this.Location.Province} {this.Season}";
+    }
+
     /// <summary>
     /// Create a new unit. No validation is performed; the adjudicator should only call this
     /// method after accepting a build order.