Laravel Delete File

I have a test.txt file in my Laravel public folder which I simply want to delete from my controller by using

unlink('public/test.txt');

Whenever I try to run, I keep getting a 'file not found' error

ErrorException in WidgetController.php line 32: unlink('public/test2.txt'): No such file or directory

What seems to be the problem here?

via Chebli Mohamed