Upvote:1
You're incorrectly informed and so the question is moot. A COVID-19 test is worthless in Norway. You will need to self-isolate, but it's very lax: you can go out but must keep distance from those you're not staying with, and for border control you'll need a printed accommodation confirmation for your whole stay (up to 10 days). Also, use public transport for getting to/from the airport only (with a face covering, otherwise not needed).
SOURCE: Β§ 5 of the COVID-19 regulation (in Norwegian) https://lovdata.no/dokument/SF/forskrift/2020-03-27-470