The confirm() util incorrectly returns true only when the answer is
false. This patch reverses the logic so that it properly returns true
when the user inputs a true statement.
Include test case for delete-all command usage to accept or abort.
Mocking the input builtin ensures that the behaviour resulting from the
user inputting 'y' or 'n' will remain tested for delete-all.
Change-Id: I742804a8efe7da8ca6aa70f20059d02758910deb
Co-Authored-By: Darragh Bailey <dbailey@hpe.com>
Signed-off-by: Thanh Ha <thanh.ha@linuxfoundation.org>
fd01e9e916