Test for properties column filtering

Author: nascimentod

test/Serilog.Sinks.MSSqlServer.Tests/TestPropertiesColumnFiltering.cs

@@ -1,10 +1,51 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
+using Dapper;
+using FluentAssertions;
+using System.Data.SqlClient;
+using Xunit;
 
 namespace Serilog.Sinks.MSSqlServer.Tests
 {
-    class TestPropertiesColumnFiltering
+    [Collection("LogTest")]
+    public class TestPropertiesColumnFiltering
     {
+        internal class PropertiesColumns
+        {
+            public string Properties { get; set; }
+        }
+
+        [Fact]
+        public void FilteredProperties()
+        {
+            // arrange
+            var columnOptions = new ColumnOptions();
+            columnOptions.Properties.PropertiesFilter = (propName) => propName == "A";
+
+            Log.Logger = new LoggerConfiguration()
+                .WriteTo.MSSqlServer
+                (
+                    connectionString: DatabaseFixture.LogEventsConnectionString,
+                    tableName: DatabaseFixture.LogTableName,
+                    columnOptions: columnOptions,
+                    autoCreateSqlTable: true
+                )
+                .CreateLogger();
+
+            // act
+            Log.Logger
+                .ForContext("A", "AValue")
+                .ForContext("B", "BValue")
+                .Information("Logging message");
+
+            Log.CloseAndFlush();
+
+            // assert
+            using (var conn = new SqlConnection(DatabaseFixture.LogEventsConnectionString))
+            {
+                var logEvents = conn.Query<PropertiesColumns>($"SELECT Properties from {DatabaseFixture.LogTableName}");
+
+                logEvents.Should().Contain(e => e.Properties.Contains("AValue"));
+                logEvents.Should().NotContain(e => e.Properties.Contains("BValue"));
+            }
+        }
     }
 }