var insert_req_2 = "INSERT INTO users VALUES('Guillaume', 'xxx', 1)"
var select_req = "SELECT * FROM users"
-var db = new NativeSqlite3.open(filename)
+var db = new NativeSqlite3.open(filename.to_cstring)
assert sqlite_open: db.error.is_ok
db.exec(create_req)
db.close
-db = new NativeSqlite3.open(filename)
+db = new NativeSqlite3.open(filename.to_cstring)
assert sqlite_reopen: db.error.is_ok
stmt = db.prepare(select_req)