Home grown tomatoes lasted a year

So at the end of last year’s harvest I left 3x tomato’s in a pot on the side in my kitchen. These were out of the sunlight just to add. I thought id leave them there as an experiment, and to my surprise 1 year later they’re still there, unharmed and no mold etc. (with the exception of one that’s shrivelled up). Usually tomatoes have a short life span. Has anyone else managed to get their tomatoes to last this long?