public function testAuthentication()
{
$provider = new TotpAuth($this->container);
$secret = $provider->getSecret();
$this->assertNotEmpty($secret);
$provider->setCode('1234');
$this->assertFalse($provider->authenticate());
if (!!`which oathtool`) {
$code = shell_exec('oathtool --totp -b ' . $secret);
$provider->setCode(trim($code));
$this->assertTrue($provider->authenticate());
}
}