public void ForContextAddingPropertiesTests() { var dummySink = new DummySink(); var log = new SerilogLogger(new LoggerConfiguration().WriteTo.Sink(dummySink).CreateLogger()); var messageTemplate = "Testing adding {prop2} props"; log.ForContext("prop", "value").InfoFormat(messageTemplate, "awesome"); Log.CloseAndFlush(); var result = dummySink.Events.SingleOrDefault(); Assert.NotNull(result); Assert.AreEqual(LogEventLevel.Information, result.Level); Assert.AreEqual(messageTemplate, result.MessageTemplate.Text); Assert.True(result.Properties.ContainsKey("prop")); Assert.AreEqual("\"value\"", result.Properties["prop"].ToString()); Assert.True(result.Properties.ContainsKey("prop2")); Assert.AreEqual("\"awesome\"", result.Properties["prop2"].ToString()); }