PAGI\CallSpool\Impl\CallSpoolImpl::getInstance PHP Метод

    public static function getInstance(array $options = array())
    {
        if (self::$instance === false) {
            $ret = new CallSpoolImpl($options);
            self::$instance = $ret;
        } else {
            $ret = self::$instance;
        }
        return self::$instance;
    }

        /**
         * @test
         */
        public function can_spool_and_schedule()
        {
            $tmpDir = sys_get_temp_dir() . DIRECTORY_SEPARATOR . microtime(true);
            $spoolDir = $tmpDir . DIRECTORY_SEPARATOR . 'spool';
            if (@mkdir($tmpDir, 0755, true) === false) {
                $this->fail('Could not create temporary directory');
            }
            if (@mkdir($spoolDir . DIRECTORY_SEPARATOR . 'outgoing', 0755, true) === false) {
                $this->fail('Could not create temporary spool directory');
            }
            $props = array('tmpDir' => $tmpDir, 'spoolDir' => $spoolDir);
            $spool = \PAGI\CallSpool\Impl\CallSpoolImpl::getInstance($props);
            $call = new \PAGI\CallSpool\CallFile(new \PAGI\DialDescriptor\SIPDialDescriptor('target', 'provider'));
            $call->unserialize(<<<TEXT
Channel: SIP/target@provider
Archive: Yes
Context: context
Priority: priority
Extension: extension
Application: application
AlwaysDelete: Yes
CallerID: callerId
MaxRetries: 33
RetryTime: 44
WaitTime: 22
Account: account
Data: a,b,c
aaaa:
Set: var=value
Set: var2=
TEXT
);
            $file = $spool->spool($call, 12);
            $content = <<<TEXT
Channel: SIP/target@provider
Archive: Yes
Context: context
Priority: priority
Extension: extension
Application: application
AlwaysDelete: Yes
CallerID: callerId
MaxRetries: 33
RetryTime: 44
WaitTime: 22
Account: account
Data: a,b,c
aaaa: ?
Set: var=value
Set: var2=?
TEXT;
            $this->assertEquals(file_get_contents($file), $content);
            $this->assertEquals(filemtime($file), 12);
            if (@unlink($file) === false) {
                $this->fail('could not remove call file: ' . $file);
            }
            if (@rmdir($spoolDir . DIRECTORY_SEPARATOR . 'outgoing') === false) {
                $this->fail('could not remove temporary spool outgoing directory');
            }
            if (@rmdir($spoolDir) === false) {
                $this->fail('could not remove temporary spool directory');
            }
            if (@rmdir($tmpDir) === false) {
                $this->fail('could not remove temporary directory');
            }
        }