[SetUp]
    public void SetUp()
    {
        var sqlSinkOptions = new MSSqlServerSinkOptions { TableName = "AuditRecord", SchemaName = "MOT" };
        var columnOptions = new ColumnOptions
        {
            AdditionalColumns = new List<SqlColumn>
            {
                new SqlColumn
                {
                    ColumnName = "AuditJSON",
                    DataType = SqlDbType.NVarChar,
                    DataLength = -1,
                    AllowNull = true,
                    PropertyName = "AuditJSON"
                }
            }
        };

        columnOptions.Store.Remove(StandardColumn.Message);
        columnOptions.Store.Remove(StandardColumn.MessageTemplate);
        columnOptions.Store.Remove(StandardColumn.Level);
        columnOptions.Store.Remove(StandardColumn.TimeStamp);
        columnOptions.Store.Remove(StandardColumn.Exception);
        columnOptions.Store.Remove(StandardColumn.Properties);

        Log.Logger = new LoggerConfiguration()
            .ReadFrom.AppSettings()
            .WriteTo.Conditional(
                evt => evt.Properties.ContainsKey("UseSQLLog"),
                wt => wt.MSSqlServer(
                    "TransportConnection"
                    , sinkOptions: sqlSinkOptions
                    , columnOptions: columnOptions
                    , logEventFormatter: new JsonFormatter()))
            .CreateLogger();

        Serilog.Debugging.SelfLog.Enable(msg => Debug.WriteLine(msg));
    }

    [Test]
    public void ShouldWriteSerilog()
    {
        // Arrange
        var newRecord = new AuditRecord
        {
            id = 1494
            ,
            szecondId = 56789
            ,
            entity = "dbo.TableName"
            ,
            action = "Update"
            ,
            fields = new Field[]
                {
                    new Field { field = "startDate", oldValue = "2018-01-01", newValue = "2018-01-02" }
                    , new Field { field = "reg", oldValue = "abc123", newValue = "def345" }
                }
                ,
            user = "userguid"
                ,
            timestamp = DateTime.Now
                ,
            reason = "reasoncode"
        };

        // Act
        Log.Information("log to file");
        Log.ForContext("UseSQLLog", true).Information("{@AuditJSON}", newRecord);
        Log.CloseAndFlush();

        // Assert
    }

        string json = JsonConvert.SerializeObject(newRecord);
        Log.ForContext("UseSQLLog", true).Information("{AuditJSON}", json);