public function testAddNamespace()
{
$builder = new SleepEnvironmentBuilder();
$builder->addNamespace(__NAMESPACE__)->addNamespace("testAddNamespace")->setTimestamp(1234);
$this->environment->disable();
$this->environment = $builder->build();
$this->environment->enable();
$time = time();
\testAddNamespace\sleep(123);
sleep(123);
$this->assertEquals(2 * 123 + $time, time());
$this->assertEquals(2 * 123 + $time, \testAddNamespace\time());
}