test(meta): ensure there is at least one item in the context

Author: jaredcnance

test/JsonApiDotNetCoreExampleTests/Acceptance/Spec/DocumentTests/Meta.cs

@@ -34,7 +34,9 @@ public async Task Total_Record_Count_Included()
         {
             // arrange
             _context.TodoItems.RemoveRange(_context.TodoItems);
-            var expectedCount = _context.TodoItems.Count();
+            _context.TodoItems.Add(new TodoItem());
+            _context.SaveChanges();
+            var expectedCount = 1;
             var builder = new WebHostBuilder()
                 .UseStartup<MetaStartup>();