RAT Test Question

I got mandated in my job in Healthcare and lost it because I refused to take any vaccines or boosters.

Some of the mandates here in NZ have come off so I have been applying for jobs.

I got called to come in for an Interview tomorrow with a local Employer. Jobs are thin on the ground in this rural area so I was feeling very positive.

I just received a call that before I go in for the interview I must take a RAT Test.

I don't trust those swabs so am considering taking my own swabs in and telling them I will test if they use my swabs.

Has anyone done this and how did it go?