startet with connection query intermediates

test/CMakeLists.txt

@@ -8,6 +8,7 @@ FetchContent_Declare(
 
 FetchContent_MakeAvailable(Catch2)
 
-add_executable(tests builder.cpp)
+add_executable(tests builder.cpp
+  connection.cpp)
 target_link_libraries(tests PRIVATE Catch2::Catch2WithMain matador)
 target_include_directories(tests PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>/include)

test/builder.cpp

@@ -66,12 +66,53 @@ TEST_CASE("Delete", "[query]") {
 }
 
 TEST_CASE("Where", "[query]") {
+  dialect d;
+  query_builder query(d);
+  auto sql = query.select({"id", "name", "age"})
+                  .from("person")
+                  .where("id"_col == 8 && "age"_col > 50)
+                  .compile();
+
+  REQUIRE(sql == R"(SELECT "id", "name", "age" FROM "person" WHERE ("id" = 8 AND "age" > 50))");
+
+  sql = query.select({"id", "name", "age"})
+          .from("person")
+          .where("id"_col == _ && "age"_col > 50)
+          .compile();
+
+    REQUIRE(sql == R"(SELECT "id", "name", "age" FROM "person" WHERE ("id" = ? AND "age" > 50))");
+}
+
+TEST_CASE("OrderBy", "[query]") {
+    dialect d;
+    query_builder query(d);
+    const auto sql = query.select({"id", "name", "age"})
+            .from("person")
+            .order_by("name").asc()
+            .compile();
+
+    REQUIRE(sql == R"(SELECT "id", "name", "age" FROM "person" ORDER BY "name" ASC)");
+}
+
+TEST_CASE("GroupBy", "[query]") {
+    dialect d;
+    query_builder query(d);
+    const auto sql = query.select({"id", "name", "age"})
+            .from("person")
+            .group_by("age")
+            .compile();
+
+    REQUIRE(sql == R"(SELECT "id", "name", "age" FROM "person" GROUP BY "age")");
+}
+
+TEST_CASE("Limit", "[query]") {
   dialect d;
   query_builder query(d);
   const auto sql = query.select({"id", "name", "age"})
                         .from("person")
-                        .where("id"_col == 8)
+                        .offset(10)
+                        .limit(20)
                         .compile();
 
-  REQUIRE(sql == R"(SELECT "id", "name", "age" FROM "person" WHERE "id" = 8)");
+  REQUIRE(sql == R"(SELECT "id", "name", "age" FROM "person" OFFSET 10 LIMIT 20)");
 }

test/connection.cpp

@@ -0,0 +1,18 @@
+#include <catch2/catch_test_macros.hpp>
+
+#include <matador/sql/column.hpp>
+#include <matador/sql/condition.hpp>
+#include <matador/sql/connection.hpp>
+
+using namespace matador::sql;
+
+TEST_CASE("CSelect", "[connection]") {
+  connection c;
+
+  auto res = c.select({"id", "name", "color"})
+              .from("person")
+              .where("id"_col == 8)
+              .fetch_all();
+
+  REQUIRE(res.sql == R"(SELECT "id", "name", "color" FROM "person" WHERE "id" = 8)");
+}