public void TestInvalidMultiShardConnectionString()
        {
            MultiShardConnection conn;

            try
            {
                conn = new MultiShardConnection(_shardMap.GetShards(), connectionString: null);
            }
            catch (Exception ex)
            {
                Assert.IsTrue(ex is ArgumentNullException, "Expected ArgumentNullException!");
            }

            try
            {
                conn = new MultiShardConnection(_shardMap.GetShards(), MultiShardTestUtils.ShardMapManagerConnectionString);
            }
            catch (Exception ex)
            {
                Assert.IsTrue(ex is ArgumentException, "Expected ArgumentException!");
            }

            // Validate that the ApplicationName is updated properly
            var applicationStringBldr = new StringBuilder();
            for (int i = 0; i < ApplicationNameHelper.MaxApplicationNameLength; i++)
            {
                applicationStringBldr.Append('x');
            }
            string applicationName = applicationStringBldr.ToString();
            SqlConnectionStringBuilder connStringBldr = new SqlConnectionStringBuilder(MultiShardTestUtils.ShardConnectionString);
            connStringBldr.ApplicationName = applicationName;
            conn = new MultiShardConnection(_shardMap.GetShards(), connStringBldr.ConnectionString);

            string updatedApplicationName = new SqlConnectionStringBuilder
                (conn.ShardConnections[0].Item2.ConnectionString).ApplicationName;
            Assert.IsTrue(updatedApplicationName.Length == ApplicationNameHelper.MaxApplicationNameLength &&
                updatedApplicationName.EndsWith(MultiShardConnection.ApplicationNameSuffix), "ApplicationName not appended with {0}!",
                MultiShardConnection.ApplicationNameSuffix);
        }