public function testUserNameCollision()
{
$salt = time();
// Test users should not exist
$this->assertNull(UsersDAO::FindByUsername('A' . $salt));
$this->assertNull(UsersDAO::FindByUsername('A' . $salt . '1'));
$this->assertNull(UsersDAO::FindByUsername('A' . $salt . '2'));
// Create collision
$c = new SessionController();
$c->LoginViaGoogle('A' . $salt . '@isp1.com');
$c->LoginViaGoogle('A' . $salt . '@isp2.com');
$c->LoginViaGoogle('A' . $salt . '@isp3.com');
$this->assertNotNull(UsersDAO::FindByUsername('A' . $salt));
$this->assertNotNull(UsersDAO::FindByUsername('A' . $salt . '1'));
$this->assertNotNull(UsersDAO::FindByUsername('A' . $salt . '2'));
}
