(assert (equal (truename "$testdir/link-4") #p"$testdir/link-4"))
(assert (equal (truename "$testdir/link-5") #p"$testdir/link-5"))
(assert (equal (truename "$testdir/link-6") #p"$testdir/link-6"))
(assert (equal (truename "$testdir/link-4") #p"$testdir/link-4"))
(assert (equal (truename "$testdir/link-5") #p"$testdir/link-5"))
(assert (equal (truename "$testdir/link-6") #p"$testdir/link-6"))