public async Task TestPostValueAsync()
        {
            try
            {
                var client = new InfluxDBClient (influxUrl, dbUName, dbpwd);
                var r = await client.PostValueAsync (dbName, measurementName, DateTime.UtcNow.ToEpoch(TimePrecision.Seconds),TimePrecision.Seconds,"testTag=testTagValue","Temp",33.05);
                Assert.IsTrue (r, "PostValueAsync retunred false");
            }
            catch ( Exception e )
            {

                Assert.Fail ("Unexpected exception of type {0} caught: {1}",
                            e.GetType (), e.Message);
                return;
            }
        }