#25: throw missingTableException when getTable() doesn't find a matching table

GBase/GBase.cs

@@ -101,8 +101,9 @@ namespace GBase
             if (Tables.OfType<IGBaseTable<T>>().Any())
                 return Tables.OfType<IGBaseTable<T>>().First();
 
-            //TODO: This probably doesn't work, because even though t.Type : T, IGBaseTable<t.Type> !: IGBaseTable<T>
-            return (IGBaseTable<T>) Tables.FirstOrDefault(t => typeof(T).IsAssignableFrom(t.Type)); //TestMe
+            throw new MissingTableException<T>();
+            // //TODO: This probably doesn't work, because even though t.Type : T, IGBaseTable<t.Type> !: IGBaseTable<T>
+            // return (IGBaseTable<T>) Convert.ChangeType(Tables.FirstOrDefault(t => typeof(T).IsAssignableFrom(t.Type)), typeof(IGBaseTable<T>)); //TestMe
         }
 
         /// <summary>
@@ -149,7 +150,7 @@ namespace GBase
         {
             IGBaseTable<T> table = GetTable<T>();
             if (table == null)
-                throw new Exception(); //TODO: Create exception
+                throw new MissingTableException<T>();
             
             return await table.GetValues<TProperty>(entry, propertyName, cancellationToken);
         }