create UTs and sandbox example

e2e/Sandbox/DashboardCreators/AreaVisualizationDashboard.cs

@@ -0,0 +1,51 @@
+using Reveal.Sdk.Dom;
+using Reveal.Sdk.Dom.Data;
+using Reveal.Sdk.Dom.Filters;
+using Reveal.Sdk.Dom.Visualizations;
+using Sandbox.DashboardFactories;
+using Sandbox.Helpers;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Sandbox.DashboardCreators
+{
+    internal class AreaVisualizationDashboard : IDashboardCreator
+    {
+        public string Name => "Area Visualization";
+
+        public RdashDocument CreateDashboard()
+        {
+            var document = new RdashDocument("My Dashboard");
+
+            var excelDataSourceItem = new RestDataSourceItem("Marketing Sheet")
+            {
+                Subtitle = "Excel Data Source Item",
+                Url = "http://dl.infragistics.com/reportplus/reveal/samples/Samples.xlsx",
+                IsAnonymous = true,
+                Fields = DataSourceFactory.GetMarketingDataSourceFields(),
+            };
+            excelDataSourceItem.UseExcel("Marketing");
+
+            document.Visualizations.Add(new AreaChartVisualization("Area", excelDataSourceItem)
+            {
+                IsTitleVisible = true,
+                Description = "Create Area Visualization"
+            }
+            .SetLabel(new DateDataField("Date") { AggregationType = DateAggregationType.Month })
+            .SetValues("Paid Traffic", "Organic Traffic", "Other Traffic")
+            .ConfigureSettings(settings =>
+            {
+                settings.Trendline = TrendlineType.LinearFit;
+                settings.ShowLegend = true;
+            }));
+
+            document.Filters.Add(new DashboardDataFilter("Spend", excelDataSourceItem));
+            document.Filters.Add(new DashboardDateFilter("My Date Filter"));
+
+            return document;
+        }
+    }
+}

e2e/Sandbox/MainWindow.xaml.cs

@@ -45,6 +45,7 @@ public partial class MainWindow : Window
         {
             new AmazonAthenaDashboard(),
             new AmazonRedshiftDashboard(),
+            new AreaVisualizationDashboard(),
             new CampaignsDashboard(),
             new CustomDashboard(),
             new DashboardLinkingDashboard(),