insert has one progress

test/orm/query/SessionQueryBuilderTest.cpp

@@ -23,6 +23,7 @@
 #include "../../models/recipe.hpp"
 #include "../../models/order.hpp"
 #include "../../models/student.hpp"
+#include "../../models/user.hpp"
 #include "../../models/model_metas.hpp"
 
 using namespace matador::object;
@@ -384,4 +385,22 @@ TEST_CASE("Test eager relationship", "[query][entity][builder]") {
   // .str(db);
   //
   // std::cout << ctx << std::endl;
+}
+
+TEST_CASE("Test has one relationship", "[query][entity][builder][has_one]") {
+  using namespace matador::test;
+  backend_provider::instance().register_backend("noop", std::make_unique<orm::test_backend_service>());
+  connection db("noop://noop.db");
+
+  schema scm;
+  auto result = scm.attach<user>("users")
+    .and_then( [&scm] { return scm.attach<user_session>("user_sessions"); } );
+  REQUIRE(result);
+
+  select_query_builder eqb(scm);
+
+  auto q = eqb.build<user>();
+  REQUIRE(q.is_ok());
+  const auto sql = q->str(db);
+
 }