tests: begin adding tests related to performing searches

src/SanctionsSearch.Worker/Extensions/SearchRequestExtensions.cs

@@ -5,6 +5,6 @@ static class SearchRequestExtensions
   public static Expression<Func<Sdn, bool>> ToSdnFilter(this SearchRequest request)
   {
     var nameParts = request.Name.Split(' ', StringSplitOptions.RemoveEmptyEntries);
-    return sdn => nameParts.All(part => sdn.Name.Contains(part));
+    return sdn => nameParts.All(part => EF.Functions.Like(sdn.Name, "%" + part + "%"));
   }
 }