added session context and implemented the executor interface for session

test/backends/SessionFixture.cpp

@@ -5,7 +5,7 @@
 namespace matador::test {
 
 SessionFixture::SessionFixture()
-  : pool(connection::dns, 4), ses(pool) {}
+  : pool(connection::dns, 4), ses({bus, pool}) {}
 
 SessionFixture::~SessionFixture() {
   while (!tables_to_drop.empty()) {

test/backends/SessionFixture.hpp

@@ -3,6 +3,8 @@
 
 #include "matador/orm/session.hpp"
 
+#include "matador/utils/message_bus.hpp"
+
 #include "connection.hpp"
 
 #include <stack>
@@ -18,6 +20,7 @@ protected:
   sql::connection_pool pool;
   std::stack <std::string> tables_to_drop;
   orm::session ses;
+  utils::message_bus bus;
 
 private:
   void drop_table_if_exists(const std::string &table_name) const;

test/backends/SessionTest.cpp

@@ -234,7 +234,4 @@ TEST_CASE_METHOD(SessionFixture, "Use session to find all objects with many-to-m
   recipes.push_back(std::make_unique<recipe>(7, "Apple Crumble"));
   recipes.push_back(std::make_unique<recipe>(8, "Beans Chili"));
   recipes.push_back(std::make_unique<recipe>(9, "Fruit Salad"));
-
-  
-
 }

test/backends/StatementCacheTest.cpp

@@ -15,13 +15,13 @@ class StatementCacheFixture
 {
 public:
   StatementCacheFixture()
-  : pool(test::connection::dns, 4), ses(pool)
+  : pool(test::connection::dns, 4)//, ses(pool)
   {}
   ~StatementCacheFixture() = default;
 
 protected:
   sql::connection_pool pool;
-  orm::session ses;
+  // orm::session ses;
 };
 
 TEST_CASE_METHOD(StatementCacheFixture, "Acquire prepared statement", "[statement cache]") {

test/orm/backend/test_statement.cpp

@@ -14,8 +14,7 @@ utils::result<size_t, utils::error> test_statement::execute(const sql::parameter
   using namespace std::chrono_literals;
   std::mt19937 rng(query_.sql.size());
   std::uniform_int_distribution dist(10, 50);
-  std::this_thread::sleep_for(std::chrono::milliseconds(50));
-  // std::this_thread::sleep_for(std::chrono::milliseconds(dist(rng)));
+  std::this_thread::sleep_for(std::chrono::milliseconds(dist(rng)));
   return utils::ok(static_cast<size_t>(8));
 }