<?php
    function crop_string ($str, $length)
    {
        if (strlen($str) > $length - 3) {
            $lines = split("\n", wordwrap($str, $length - 3));
            return $lines[0]. "...";
        } else {
            return $str;
        }
    }
? >

<?php
    include 'lib.php';

    $tests = array (
        'crop_string' => array(
            array('foo...', 'foo', 1),
            array('foo...', 'foo', 3),
            array('foo', 'foo', 7),
            array('', '', 1),
            array('', '', 7),
            array('Hello...', 'Hello world', 1),
            array('Hello...', 'Hello world', 7),
            array('Hello world', 'Hello world', 17),
        ),
    );
    $functions = get_defined_functions();
    $functions = $functions['user'];

    foreach ($functions as $function) {
        if (isset($tests[$function])) {
            $i = 0;

            foreach ($tests[$function] as $test) {
                $i++;
                switch (count($test)) {
                    case 2: $res = $function($test[1]); break; 
                    case 3: $res = $function($test[1], $test[2]); break; 
                }

                if ($res != $test[0]) {
                    echo "FAILED test $function, $i: Expected '{$test[0]}' got '$res'\n";
                } else {
                    echo "PASSED test $function, $i\n";
                }
            }
        }
    }
? >