post-scarcity/unit-tests/recursion.sh

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#!/bin/bash
expected='nil 3,628,800'
output=`target/psse 2>/dev/null <<EOF
(progn
(set! fact
(lambda (n)
(cond ((= n 1) 1)
(t (* n (fact (- n 1)))))))
nil)
(fact 10)
EOF`
actual=`echo $output | tail -1`
if [ "${expected}" = "${actual}" ]
then
echo "OK"
exit 0
else
echo "Fail: expected '${expected}', got '${actual}'"
exit 1
fi