Pop\Version::getLatest PHP Method

    public static function getLatest()
    {
        $latest = null;
        $handle = fopen(self::URL, 'r');
        if ($handle !== false) {
            $latest = stream_get_contents($handle);
            fclose($handle);
        }
        return $latest;
    }

 public function testVersion()
 {
     $this->assertEquals('1.7.0', Version::getVersion());
     $this->assertEquals('1.7.0', trim(Version::getLatest()));
     $this->assertEquals(1, Version::compareVersion(1.8));
 }