public function testOauthToken()
{
$env = $this->getEnv();
$api = new Authentication($env['DOMAIN'], $env['GLOBAL_CLIENT_ID'], $env['GLOBAL_CLIENT_SECRET']);
$token = $api->get_access_token();
$this->assertArrayHasKey('access_token', $token);
$this->assertArrayHasKey('token_type', $token);
$this->assertEquals('bearer', strtolower($token['token_type']));
}