def test_sandbox_which():
s = Sandbox()
assert s.which('sh') == None
assert s.which('id') == None
s.clone_bin('sh')
s.clone_bin('id')
assert s.isfile('/bin/sh')
assert s.isfile('/usr/bin/id')
assert s.which('sh') == '/bin/sh'
assert s.which('id') == '/usr/bin/id'
feedback = s.process(["id", "-u"])
assert feedback.ended_correctly
assert feedback.return_code == 0
del s
