Transaction implementation (#2)

Reviewed-on: #2

test/main_test.go

@@ -4,6 +4,8 @@ import (
 	"os"
 	"testing"
 
+	simpleorm "git.gdulai.com/gdulai/simpleorm"
+	"git.gdulai.com/gdulai/simpleorm/exec"
 	_ "github.com/mattn/go-sqlite3"
 	log "gitlab.com/gdulai/simpleloglvl"
 )
@@ -61,3 +63,18 @@ func TestMain(m *testing.M) {
 
 	os.Exit(code)
 }
+
+func testSetup() (*simpleorm.ORM, *simpleorm.DBConnection) {
+	conn := simpleorm.OpenConnection("sqlite3", "file:test.db")
+
+	orm := simpleorm.NewORM(Test{}, TestWithFk{}, TestWithFkAndFkId{},
+		TestWithCompositePk{}, TestWithCompositeFk{}, TestWithBool{}, TestWithTime{})
+	exec.ExecuteDDL(conn, orm)
+
+	return orm, conn
+}
+
+func cleanUp(dbFile string, conn *simpleorm.DBConnection) {
+	conn.Close()
+	os.Remove(dbFile)
+}