Create unit test for GridVisualizationExtensions class

src/Reveal.Sdk.Dom.Tests/Visualizations/Extensions/Visualizations/GridVisualizationExtensionsFixture.cs

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+using Reveal.Sdk.Dom.Visualizations;
+using Reveal.Sdk.Dom.Visualizations.Settings;
+using System;
+using System.Collections.Generic;
+using System.Drawing.Printing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Reveal.Sdk.Dom.Tests.Visualizations.Extensions.Visualizations
+{
+    public class GridVisualizationExtensionsFixture
+    {
+        [Fact]
+        public void ConfigureSettings_UpdateSettingsField_WithoutConditions()
+        {
+            // Arrange
+            var vs = new GridVisualization();
+            var expectedSettings = new GridVisualizationSettings()
+            {
+                DateFieldAlignment = Alignment.Center,
+                FontSize = FontSize.Large,
+                IsFirstColumnFixed = false,
+                IsPagingEnabled = true,
+                NumericFieldAlignment = Alignment.Left,
+                PageSize = 5,
+                SchemaTypeName = "Test Schema Type Name",
+                Style = new GridVisualizationStyle()
+                {
+                    DateAlignment = Alignment.Left,
+                    FixedLeftColumns = false,
+                    NumericAlignment = Alignment.Right,
+                    TextAlignment = Alignment.Right
+                },
+                TextFieldAlignment = Alignment.Right,
+                VisualizationType = "Test VS Type"
+            };
+
+            var action = (GridVisualizationSettings s) =>
+            {
+                s.DateFieldAlignment = expectedSettings.DateFieldAlignment;
+                s.FontSize = expectedSettings.FontSize;
+                s.IsFirstColumnFixed = expectedSettings.IsFirstColumnFixed;
+                s.IsPagingEnabled = expectedSettings.IsPagingEnabled;
+                s.NumericFieldAlignment = expectedSettings.NumericFieldAlignment;
+                s.PageSize = expectedSettings.PageSize;
+                s.SchemaTypeName = expectedSettings.SchemaTypeName;
+                s.Style = expectedSettings.Style;
+                s.TextFieldAlignment = expectedSettings.TextFieldAlignment;
+                s.VisualizationType = expectedSettings.VisualizationType;
+            };
+
+            // Act
+            vs.ConfigureSettings(action);
+
+            // Assert
+            Assert.Equivalent(expectedSettings, vs.Settings);
+        }
+
+    }
+}