Pull in full sqlite_modern_cpp repo for the license as it is not attached to source files

common/sqlite_modern_cpp/tests/lvalue_functor.cc

@@ -0,0 +1,52 @@
+#include<iostream>
+#include<sqlite_modern_cpp.h>
+#include<string>
+#include<vector>
+#include<catch2/catch.hpp>
+using namespace  sqlite;
+using namespace std;
+
+template<typename Target, typename... AttrTypes>
+struct builder {
+    vector<Target> results;
+
+    void operator()(AttrTypes... args) {
+      results.emplace_back(std::forward<AttrTypes&&>(args)...);
+    };
+};
+
+
+struct user {
+	int age;
+	string name;
+	double weight;
+	
+	user(int age, string name, double weight) : age(age), name(name), weight(weight) { }
+
+    static std::vector<user> all(sqlite::database& db) {
+	  builder<user, int, std::string, double> person_builder;
+      db << "SELECT * FROM user;"
+        >> person_builder;
+      return std::move(person_builder.results); // move to avoid copying data ;-)
+    };
+};
+
+TEST_CASE("lvalue functors work", "[lvalue_functor]") {
+
+    database db(":memory:");
+
+    db <<
+        "create table if not exists user ("
+        "   age int,"
+        "   name text,"
+        "   weight real"
+        ");";
+
+    db << "insert into user (age,name,weight) values (?,?,?);" << 20 << u"chandler" << 83.25;
+    db << "insert into user (age,name,weight) values (?,?,?);" << 21 << u"monika" << 86.25;
+    db << "insert into user (age,name,weight) values (?,?,?);" << 22 << u"ross" << 88.25;
+
+    auto users = user::all(db);
+
+    REQUIRE(users.size() == 3);
+}