#!/bin/sh

assert_eq () {
    [ "$1" = "$2" ] || ( echo Assertion failed: "\"$1\"" = "\"$2\""; exit 1 )
}

assert_eq foo "$(echo foo | ./muddle)"
assert_eq '(foo bar baz)' "$(echo '(foo bar baz)' | ./muddle)"
assert_eq '(foo foo foo)' "$(echo '(foo foo foo)' | ./muddle)"