statement cache progress

test/ConnectionPoolTest.cpp

@@ -16,7 +16,7 @@ TEST_CASE("Create connection pool", "[connection pool]") {
 
   auto ptr = pool.acquire();
   REQUIRE(ptr.valid());
-  REQUIRE(ptr.id() > 0);
+  REQUIRE(ptr.id().value() > 0);
   REQUIRE(ptr->is_open());
 
   REQUIRE(pool.idle() == 3);
@@ -48,3 +48,33 @@ TEST_CASE("Create connection pool", "[connection pool]") {
   REQUIRE(pool.idle() == 4);
   REQUIRE(pool.inuse() == 0);
 }
+
+TEST_CASE("Acquire connection by id", "[connection pool]") {
+  using pool_t = connection_pool<connection>;
+
+  pool_t pool("sqlite://sqlite.db", 4);
+
+  REQUIRE(pool.size() == 4);
+  REQUIRE(pool.idle() == 4);
+  REQUIRE(pool.inuse() == 0);
+
+  auto ptr = pool.acquire();
+  REQUIRE(ptr.valid());
+  REQUIRE(ptr.id());
+  REQUIRE(ptr.id().value() > 0);
+  REQUIRE(ptr->is_open());
+
+  auto same_ptr = pool.acquire(ptr.id().value());
+
+  REQUIRE(!same_ptr.valid());
+
+  const auto connection_id = ptr.id().value();
+
+  pool.release(ptr);
+  REQUIRE(!ptr.valid());
+
+  same_ptr = pool.acquire(connection_id);
+
+  REQUIRE(same_ptr.valid());
+  REQUIRE(same_ptr.id() == connection_id);
+}