Test to verify that deep nested accessors work in Select() functions. C…

…loses GH-3350

src/LinqTests/Bugs/Bug_3350_Select_with_deep_accessor.cs

@@ -0,0 +1,35 @@
+using System.Linq;
+using System.Threading.Tasks;
+using Marten;
+using Marten.Testing.Documents;
+using Marten.Testing.Harness;
+using Shouldly;
+
+namespace LinqTests.Bugs;
+
+public class Bug_3350_Select_with_deep_accessor : BugIntegrationContext
+{
+    [Fact]
+    public async Task get_the_deeply_nested_value_in_select()
+    {
+        await theStore.BulkInsertAsync(Target.GenerateRandomData(1000).ToArray());
+
+        var views = await theSession.Query<Target>()
+            .Where(x => x.Inner != null && x.Inner.String != null)
+            .Select(x => new SelectedView { Number = x.Number, Text = x.Inner.String }).ToListAsync();
+
+        views.ShouldNotBeEmpty();
+
+        foreach (var view in views)
+        {
+            view.Text.ShouldNotBeNullOrEmpty();
+        }
+
+    }
+}
+
+public class SelectedView
+{
+    public string Text { get; set; }
+    public int Number { get; set; }
+}