<?php
/**
 * Testing file for Polish Notation Calculator
 */
require 'lib\cls\cls.LukasiewiczCalculator.php';

use \lib\cls\LukasiewiczCalculator;

$pnc =  new LukasiewiczCalculator();

echo '<h1><u>Polish Notation (PN) Calculator :</u></h1><p/>';

echo '<h3>==> Error PN Tests :</h3><ul>';

#
# Set error expressions to test
#
$error_expressions = [
    '+1 7',
    '1 *-7',
    'as17 / ',
    '',
    '1 7',
    '+ - * //',
];

#
# Call Calculate function against error expressions and print results
#
foreach($error_expressions as $expression)
{
    echo "<li>$expression : " . $pnc->Calculate($expression) . '</li>';
}

echo '</ul><p/><br/>';

echo '<h3>==> Valid PN Tests :</h3><ul>';

#
# Set valid expressions to calculate
#
$valid_expressions = [
    '+ 1 1',                            #  2
    '+ 9 * 2 6',                        # 21
    '* 3 + 4 5',                        # 27
    '- * / 15 - 7 + 1 1 3 + 2 + 1 1',   #  5
    '* + 8 6 - + 1 2 3',                #  0
 ];

#
# Call Calculate function against valid expressions and print results
#
foreach($valid_expressions as $expression)
{
    echo "<li>$expression : <b style=\"margin-left: 1em; color: blue\">" . $pnc->Calculate($expression) . '</b></li><br/>';
}

echo '</ul><p/>';

exit;