public function test3000()
 {
     $this->assertSame('MMM', toRoman(3000));
 }
<?php

$start = microtime(true);
$script = 'roman-numerals.php';
require $script;
for ($i = 1; $i <= 3000; $i++) {
    toRoman($i);
}
echo microtime(true) - $start;
 public function test3000()
 {
     $this->markTestSkipped();
     $this->assertSame('MMM', toRoman(3000));
 }