runAnimation(duration: 0.5, {

    self.leadingConstraint = self.infosView.leftAnchor.constraint(equalTo: self.view.leftAnchor, constant: -500)
    self.leadingConstraint.isActive = true
    self.leadingConstraint.constant = 500

    self.testButton.superview?.layoutSubtreeIfNeeded()

    self.infosViewOpened = true

})