Connection parser now returns :memory: instead of null when fulluri=:memory: is used.

Author: jonkeda

SQLite.CodeFirst/Internal/Utility/ConnectionStringParser.cs

@@ -17,17 +17,20 @@ internal static class ConnectionStringParser
 
         public static string GetDataSource(string connectionString)
         {
-            // Check if the datasource token exists and return Null if it doesn't.
-            // This will allow connection strings with FullUri to work.
+            // If the datasource token does not exists this is a FullUri connection string.
             IDictionary<string, string> strings = ParseConnectionString(connectionString);
             if (strings.ContainsKey(DataSourceToken))
             {
                 var path = ExpandDataDirectory(ParseConnectionString(connectionString)[DataSourceToken]);
                 // remove quotation mark if exists
-                path = path.Trim('"');
-                return path;
+                return path.Trim('"');
+            }
+            // TODO: Implement FullUri parsing.
+            if (connectionString.Contains(":memory:")) 
+            {
+                return ":memory:";
             }
-            return null;
+            throw new NotSupportedException("FullUri format is currently only supported for :memory:.");
         }
 
         [SuppressMessage("Microsoft.Globalization", "CA1308:NormalizeStringsToUppercase", Justification = "ToUppercase makes no sense.")]