that assumes you have the leeway to take longer. a lot of issues arise when there is an unforeseen deadline and you get just enough time to get out the code with some bugs and then can add tests and refactor afterwards. usually this happens when a critical component suddenly gets sunset and you need to work in a work around temporarily until you can do it right
I am trying to convey it's not about leeway, it's a yes or no. If you are asked can you get this done in 2 days, and you think "yes, but if I skip test", then your answer is "no, you can't get it done in 2 days". You are simply shipping unfinished work.
