public function testOpenidFileStoreUseNonceNonexistent()
 {
     $path = $this->path;
     $store = new ezcAuthenticationOpenidFileStore($path);
     $nonce = self::$nonce1;
     $store->storeNonce($nonce);
     unlink($path . DIRECTORY_SEPARATOR . $nonce);
     $ret = $store->useNonce($nonce);
     $this->assertEquals(false, $ret);
     $this->assertEquals(false, in_array($nonce, ezcAuthenticationOpenidFileStoreHelper::getFiles($path)));
 }